Merge branch 'main' into fix/duplicate-code

2026-03-27 22:18:44 +01:00 · 2026-03-27 22:18:44 +01:00 · 9026045a26
commit 9026045a26
parent 50d9dbf3a5 b646d3b8fe
198 changed files with 17446 additions and 10842 deletions
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@ -23,10 +23,13 @@ jobs:
        uses: golangci/golangci-lint-action@v9
        with:
          version: v2.10.1
+          args: --build-tags=goolm,stdjson

  vuln_check:
    name: Security Check
    runs-on: ubuntu-latest
+    env:
+      GOFLAGS: -tags=goolm,stdjson
    steps:
      - name: Checkout
        uses: actions/checkout@v6
@ -59,4 +62,4 @@ jobs:
        run: go generate ./...

      - name: Run go test
-        run: go test ./...
+        run: go test -tags goolm,stdjson ./...
--- a/.gitignore
+++ b/.gitignore
@ -25,6 +25,9 @@ build/
 # Secrets & Config (keep templates, ignore actual secrets)
 .env
 config/config.json
+.security.yml
+onboard
+

 # Test
 coverage.txt
@ -40,6 +43,7 @@ tasks/

 # Plans
 docs/plans/
+docs/superpowers/

 # Editors
 .vscode/
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@ -2,6 +2,11 @@
 # vim: set ts=2 sw=2 tw=0 fo=cnqoj
 version: 2

+git:
+  ignore_tags:
+    - nightly
+    - ".*-nightly.*"
+
 before:
  hooks:
    - go mod tidy
@ -15,6 +20,7 @@ builds:
    env:
      - CGO_ENABLED=0
    tags:
+      - goolm
      - stdjson
    ldflags:
      - -s -w
@ -57,6 +63,7 @@ builds:
    env:
      - CGO_ENABLED=0
    tags:
+      - goolm
      - stdjson
    ldflags:
      - -s -w
@ -95,6 +102,7 @@ builds:
    env:
      - CGO_ENABLED=0
    tags:
+      - goolm
      - stdjson
    ldflags:
      - -s -w
--- a/78
+++ b/78
@ -17,7 +17,13 @@ LDFLAGS=-X $(CONFIG_PKG).Version=$(VERSION) -X $(CONFIG_PKG).GitCommit=$(GIT_COM
 # Go variables
 GO?=CGO_ENABLED=0 go
 WEB_GO?=$(GO)
-GOFLAGS?=-v -tags stdjson
+GO_BUILD_TAGS?=goolm,stdjson
+GOFLAGS?=-v -tags $(GO_BUILD_TAGS)
+comma:=,
+empty:=
+space:=$(empty) $(empty)
+GO_BUILD_TAGS_NO_GOOLM:=$(subst $(space),$(comma),$(strip $(filter-out goolm,$(subst $(comma),$(space),$(GO_BUILD_TAGS)))))
+GOFLAGS_NO_GOOLM?=-v -tags $(GO_BUILD_TAGS_NO_GOOLM)

 # Patch MIPS LE ELF e_flags (offset 36) for NaN2008-only kernels (e.g. Ingenic X2600).
 #
@ -41,6 +47,13 @@ define PATCH_MIPS_FLAGS
 	fi
 endef

+# Patch creack/pty for loong64 support (upstream doesn't have ztypes_loong64.go)
+PTY_PATCH_LOONG64=pty_dir=$$(go env GOMODCACHE)/github.com/creack/pty@v1.1.9; \
+	if [ -d "$$pty_dir" ] && [ ! -f "$$pty_dir/ztypes_loong64.go" ]; then \
+		chmod +w "$$pty_dir" 2>/dev/null || true; \
+		printf '//go:build linux && loong64\npackage pty\ntype (_C_int int32; _C_uint uint32)\n' > "$$pty_dir/ztypes_loong64.go"; \
+	fi
+
 # Golangci-lint
 GOLANGCI_LINT?=golangci-lint

@ -125,20 +138,28 @@ build-launcher:
 	@ln -sf picoclaw-launcher-$(PLATFORM)-$(ARCH) $(BUILD_DIR)/picoclaw-launcher
 	@echo "Build complete: $(BUILD_DIR)/picoclaw-launcher"

+## build-launcher-tui: Build the picoclaw-launcher TUI binary
+build-launcher-tui:
+	@echo "Building picoclaw-launcher-tui for $(PLATFORM)/$(ARCH)..."
+	@mkdir -p $(BUILD_DIR)
+	@$(GO) build $(GOFLAGS) -o $(BUILD_DIR)/picoclaw-launcher-tui-$(PLATFORM)-$(ARCH) ./cmd/picoclaw-launcher-tui
+	@ln -sf picoclaw-launcher-tui-$(PLATFORM)-$(ARCH) $(BUILD_DIR)/picoclaw-launcher-tui
+	@echo "Build complete: $(BUILD_DIR)/picoclaw-launcher-tui"
+
 ## build-whatsapp-native: Build with WhatsApp native (whatsmeow) support; larger binary
 build-whatsapp-native: generate
 ## @echo "Building $(BINARY_NAME) with WhatsApp native for $(PLATFORM)/$(ARCH)..."
 	@echo "Building for multiple platforms..."
 	@mkdir -p $(BUILD_DIR)
-	GOOS=linux GOARCH=amd64 $(GO) build -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-amd64 ./$(CMD_DIR)
-	GOOS=linux GOARCH=arm GOARM=7 $(GO) build -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm ./$(CMD_DIR)
-	GOOS=linux GOARCH=arm64 $(GO) build -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm64 ./$(CMD_DIR)
-	GOOS=linux GOARCH=loong64 $(GO) build -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-loong64 ./$(CMD_DIR)
-	GOOS=linux GOARCH=riscv64 $(GO) build -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-riscv64 ./$(CMD_DIR)
-	GOOS=linux GOARCH=mipsle GOMIPS=softfloat $(GO) build -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle ./$(CMD_DIR)
+	GOOS=linux GOARCH=amd64 $(GO) build -tags $(GO_BUILD_TAGS),whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-amd64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=arm GOARM=7 $(GO) build -tags $(GO_BUILD_TAGS),whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm ./$(CMD_DIR)
+	GOOS=linux GOARCH=arm64 $(GO) build -tags $(GO_BUILD_TAGS),whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=loong64 $(GO) build -tags $(GO_BUILD_TAGS),whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-loong64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=riscv64 $(GO) build -tags $(GO_BUILD_TAGS),whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-riscv64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=mipsle GOMIPS=softfloat $(GO) build -tags $(GO_BUILD_TAGS_NO_GOOLM),whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle ./$(CMD_DIR)
 	$(call PATCH_MIPS_FLAGS,$(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle)
-	GOOS=darwin GOARCH=arm64 $(GO) build -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-darwin-arm64 ./$(CMD_DIR)
-	GOOS=windows GOARCH=amd64 $(GO) build -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-windows-amd64.exe ./$(CMD_DIR)
+	GOOS=darwin GOARCH=arm64 $(GO) build -tags $(GO_BUILD_TAGS),whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-darwin-arm64 ./$(CMD_DIR)
+	GOOS=windows GOARCH=amd64 $(GO) build -tags $(GO_BUILD_TAGS),whatsapp_native -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-windows-amd64.exe ./$(CMD_DIR)
 ## @$(GO) build $(GOFLAGS) -tags whatsapp_native -ldflags "$(LDFLAGS)" -o $(BINARY_PATH) ./$(CMD_DIR)
 	@echo "Build complete"
 ##	@ln -sf $(BINARY_NAME)-$(PLATFORM)-$(ARCH) $(BUILD_DIR)/$(BINARY_NAME)
@ -147,21 +168,21 @@ build-whatsapp-native: generate
 build-linux-arm: generate
 	@echo "Building for linux/arm (GOARM=7)..."
 	@mkdir -p $(BUILD_DIR)
-	GOOS=linux GOARCH=arm GOARM=7 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm ./$(CMD_DIR)
+	GOOS=linux GOARCH=arm GOARM=7 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm ./$(CMD_DIR)
 	@echo "Build complete: $(BUILD_DIR)/$(BINARY_NAME)-linux-arm"

 ## build-linux-arm64: Build for Linux ARM64 (e.g. Raspberry Pi Zero 2 W 64-bit)
 build-linux-arm64: generate
 	@echo "Building for linux/arm64..."
 	@mkdir -p $(BUILD_DIR)
-	GOOS=linux GOARCH=arm64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=arm64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm64 ./$(CMD_DIR)
 	@echo "Build complete: $(BUILD_DIR)/$(BINARY_NAME)-linux-arm64"

 ## build-linux-mipsle: Build for Linux MIPS32 LE
 build-linux-mipsle: generate
 	@echo "Building for linux/mipsle (softfloat)..."
 	@mkdir -p $(BUILD_DIR)
-	GOOS=linux GOARCH=mipsle GOMIPS=softfloat $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle ./$(CMD_DIR)
+	GOOS=linux GOARCH=mipsle GOMIPS=softfloat $(GO) build $(GOFLAGS_NO_GOOLM) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle ./$(CMD_DIR)
 	$(call PATCH_MIPS_FLAGS,$(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle)
 	@echo "Build complete: $(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle"

@ -173,18 +194,19 @@ build-pi-zero: build-linux-arm build-linux-arm64
 build-all: generate
 	@echo "Building for multiple platforms..."
 	@mkdir -p $(BUILD_DIR)
-	GOOS=linux GOARCH=amd64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-amd64 ./$(CMD_DIR)
-	GOOS=linux GOARCH=arm GOARM=7 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm ./$(CMD_DIR)
-	GOOS=linux GOARCH=arm64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm64 ./$(CMD_DIR)
-	GOOS=linux GOARCH=loong64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-loong64 ./$(CMD_DIR)
-	GOOS=linux GOARCH=riscv64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-riscv64 ./$(CMD_DIR)
-	GOOS=linux GOARCH=mipsle GOMIPS=softfloat $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle ./$(CMD_DIR)
+	GOOS=linux GOARCH=amd64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-amd64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=arm GOARM=7 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm ./$(CMD_DIR)
+	GOOS=linux GOARCH=arm64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-arm64 ./$(CMD_DIR)
+	@$(PTY_PATCH_LOONG64)
+	GOOS=linux GOARCH=loong64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-loong64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=riscv64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-riscv64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=mipsle GOMIPS=softfloat $(GO) build $(GOFLAGS_NO_GOOLM) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle ./$(CMD_DIR)
 	$(call PATCH_MIPS_FLAGS,$(BUILD_DIR)/$(BINARY_NAME)-linux-mipsle)
-	GOOS=linux GOARCH=arm GOARM=7 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-armv7 ./$(CMD_DIR)
-	GOOS=darwin GOARCH=arm64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-darwin-arm64 ./$(CMD_DIR)
-	GOOS=windows GOARCH=amd64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-windows-amd64.exe ./$(CMD_DIR)
-	GOOS=netbsd GOARCH=amd64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-netbsd-amd64 ./$(CMD_DIR)
-	GOOS=netbsd GOARCH=arm64 $(GO) build -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-netbsd-arm64 ./$(CMD_DIR)
+	GOOS=linux GOARCH=arm GOARM=7 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-linux-armv7 ./$(CMD_DIR)
+	GOOS=darwin GOARCH=arm64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-darwin-arm64 ./$(CMD_DIR)
+	GOOS=windows GOARCH=amd64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-windows-amd64.exe ./$(CMD_DIR)
+	GOOS=netbsd GOARCH=amd64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-netbsd-amd64 ./$(CMD_DIR)
+	GOOS=netbsd GOARCH=arm64 $(GO) build $(GOFLAGS) -ldflags "$(LDFLAGS)" -o $(BUILD_DIR)/$(BINARY_NAME)-netbsd-arm64 ./$(CMD_DIR)
 	@echo "All builds complete"

 ## install: Install picoclaw to system and copy builtin skills
@ -221,13 +243,13 @@ clean:

 ## vet: Run go vet for static analysis
 vet: generate
-	@packages="$$(go list ./...)" && \
-		$(GO) vet $$(printf '%s\n' "$$packages" | grep -v '^github.com/sipeed/picoclaw/web/')
+	@packages="$$($(GO) list $(GOFLAGS) ./...)" && \
+		$(GO) vet $(GOFLAGS) $$(printf '%s\n' "$$packages" | grep -v '^github.com/sipeed/picoclaw/web/')
 	@cd web/backend && $(WEB_GO) vet ./...

 ## test: Test Go code
 test: generate
-	@$(GO) test $$(go list ./... | grep -v github.com/sipeed/picoclaw/web/)
+	@$(GO) test $(GOFLAGS) $$($(GO) list $(GOFLAGS) ./... | grep -v github.com/sipeed/picoclaw/web/)
 	@cd web && make test

 ## fmt: Format Go code
@ -236,11 +258,11 @@ fmt:

 ## lint: Run linters
 lint:
-	@$(GOLANGCI_LINT) run
+	@$(GOLANGCI_LINT) run --build-tags $(GO_BUILD_TAGS)

 ## fix: Fix linting issues
 fix:
-	@$(GOLANGCI_LINT) run --fix
+	@$(GOLANGCI_LINT) run --fix --build-tags $(GO_BUILD_TAGS)

 ## deps: Download dependencies
 deps:
--- a/README.fr.md
+++ b/README.fr.md
@ -524,7 +524,7 @@ Connectez PicoClaw au réseau social des Agents simplement en envoyant un seul m
 | Commande                  | Description                              |
 | ------------------------- | ---------------------------------------- |
 | `picoclaw onboard`        | Initialiser la config & le workspace     |
-| `picoclaw onboard weixin` | Connecter un compte WeChat via QR |
+| `picoclaw auth weixin` | Connecter un compte WeChat via QR |
 | `picoclaw agent -m "..."` | Chatter avec l'agent                     |
 | `picoclaw agent`          | Mode chat interactif                     |
 | `picoclaw gateway`        | Démarrer le gateway                      |
--- a/README.id.md
+++ b/README.id.md
@ -520,7 +520,7 @@ Hubungkan PicoClaw ke Jaringan Sosial Agent hanya dengan mengirim satu pesan mel
 | Perintah                   | Deskripsi                        |
 | -------------------------- | -------------------------------- |
 | `picoclaw onboard`         | Inisialisasi konfigurasi & workspace |
-| `picoclaw onboard weixin` | Hubungkan akun WeChat via QR |
+| `picoclaw auth weixin` | Hubungkan akun WeChat via QR |
 | `picoclaw agent -m "..."` | Chat dengan agent                |
 | `picoclaw agent`           | Mode chat interaktif             |
 | `picoclaw gateway`         | Mulai gateway                    |
--- a/README.it.md
+++ b/README.it.md
@ -520,7 +520,7 @@ Connetti PicoClaw al Social Network degli Agent semplicemente inviando un singol
 | Comando                   | Descrizione                        |
 | ------------------------- | ---------------------------------- |
 | `picoclaw onboard`        | Inizializza config & workspace     |
-| `picoclaw onboard weixin` | Connetti account WeChat tramite QR |
+| `picoclaw auth weixin` | Connetti account WeChat tramite QR |
 | `picoclaw agent -m "..."` | Chatta con l'agent                 |
 | `picoclaw agent`          | Modalità chat interattiva          |
 | `picoclaw gateway`        | Avvia il gateway                   |
--- a/README.ja.md
+++ b/README.ja.md
@ -520,7 +520,7 @@ CLI または統合チャットアプリからメッセージを 1 つ送るだ
 | コマンド                    | 説明                           |
 | ------------------------- | ------------------------------ |
 | `picoclaw onboard`        | 設定＆ワークスペースの初期化     |
-| `picoclaw onboard weixin` | WeChat アカウントを QR で接続 |
+| `picoclaw auth weixin` | WeChat アカウントを QR で接続 |
 | `picoclaw agent -m "..."` | Agent とチャット                |
 | `picoclaw agent`          | インタラクティブチャットモード   |
 | `picoclaw gateway`        | Gateway を起動                  |
--- a/README.md
+++ b/README.md
@ -322,14 +322,17 @@ This creates `~/.picoclaw/config.json` and the workspace directory.
  "model_list": [
    {
      "model_name": "gpt-5.4",
-      "model": "openai/gpt-5.4",
-      "api_key": "sk-your-api-key"
+      "model": "openai/gpt-5.4"
+      // api_key is now loaded from .security.yml
    }
  ]
 }
 ```

 > See `config/config.example.json` in the repo for a complete configuration template with all available options.
+> 
+> Please note: config.example.json format is version 0, with sensitive codes in it, and will be auto migrated to version 1+, then, the config.json will only store insensitive data, the sensitive codes will be stored in .security.yml, if you need manually modify the codes, please see `docs/security_configuration.md` for more details.
+

 **3. Chat**

@ -523,7 +526,7 @@ Connect PicoClaw to the Agent Social Network simply by sending a single message
 | Command                   | Description                      |
 | ------------------------- | -------------------------------- |
 | `picoclaw onboard`        | Initialize config & workspace    |
-| `picoclaw onboard weixin` | Connect WeChat account via QR |
+| `picoclaw auth weixin` | Connect WeChat account via QR |
 | `picoclaw agent -m "..."` | Chat with the agent              |
 | `picoclaw agent`          | Interactive chat mode            |
 | `picoclaw gateway`        | Start the gateway                |
--- a/README.pt-br.md
+++ b/README.pt-br.md
@ -520,7 +520,7 @@ Conecte o PicoClaw à Rede Social de Agents simplesmente enviando uma única men
 | Comando                   | Descrição                              |
 | ------------------------- | -------------------------------------- |
 | `picoclaw onboard`        | Inicializar config e workspace         |
-| `picoclaw onboard weixin` | Conectar conta WeChat via QR |
+| `picoclaw auth weixin` | Conectar conta WeChat via QR |
 | `picoclaw agent -m "..."` | Conversar com o agent                  |
 | `picoclaw agent`          | Modo de chat interativo                |
 | `picoclaw gateway`        | Iniciar o gateway                      |
--- a/README.vi.md
+++ b/README.vi.md
@ -520,7 +520,7 @@ Kết nối PicoClaw với Mạng xã hội Agent chỉ bằng cách gửi một
 | Lệnh                      | Mô tả                                    |
 | ------------------------- | ---------------------------------------- |
 | `picoclaw onboard`        | Khởi tạo cấu hình & workspace           |
-| `picoclaw onboard weixin` | Kết nối tài khoản WeChat qua QR |
+| `picoclaw auth weixin` | Kết nối tài khoản WeChat qua QR |
 | `picoclaw agent -m "..."` | Trò chuyện với agent                     |
 | `picoclaw agent`          | Chế độ trò chuyện tương tác             |
 | `picoclaw gateway`        | Khởi động gateway                        |
--- a/README.zh.md
+++ b/README.zh.md
@ -520,7 +520,7 @@ PicoClaw 原生支持 [MCP](https://modelcontextprotocol.io/) — 连接任意 M
 | 命令                       | 说明                   |
 | ------------------------- | ---------------------- |
 | `picoclaw onboard`        | 初始化配置与工作区       |
-| `picoclaw onboard weixin` | 扫码连接微信个人号 |
+| `picoclaw auth weixin` | 扫码连接微信个人号 |
 | `picoclaw agent -m "..."` | 与 Agent 对话           |
 | `picoclaw agent`          | 交互式对话模式           |
 | `picoclaw gateway`        | 启动网关                |
--- a/assets/wechat.png
+++ b/assets/wechat.png
--- a/cmd/picoclaw-launcher-tui/README.md
+++ b/cmd/picoclaw-launcher-tui/README.md
@ -0,0 +1,69 @@
+# Picoclaw Launcher TUI
+
+This directory contains the terminal-based TUI launcher for `picoclaw`.
+It provides a lightweight, terminal-native user interface for managing, configuring, and interacting with the core `picoclaw` engine, without requiring a web browser or graphical environment.
+
+## Architecture
+
+The TUI launcher is implemented purely in Go with no external runtime dependencies:
+* **`main.go`**: Application entry point, handles initialization and main event loop
+* **`ui/`**: TUI interface components built on tview + tcell framework:
+  - `home.go`: Main dashboard with navigation menu
+  - `schemes.go`: AI model scheme management
+  - `users.go`: User and API key management for model providers
+  - `channels.go`: Communication channel (Telegram/Discord/WeChat etc.) configuration editor
+  - `gateway.go`: PicoClaw gateway daemon lifecycle management (start/stop/status)
+  - `app.go`: Core TUI application framework and navigation logic
+  - `models.go`: Data structures and state management
+* **`config/`**: Configuration management layer, integrates with the core picoclaw configuration system
+
+## Getting Started
+
+### Prerequisites
+
+* Go 1.25+
+* Terminal with 256-color support (most modern terminals are compatible)
+
+### Development
+
+Run the TUI launcher directly in development mode:
+
+```bash
+# From project root
+go run ./cmd/picoclaw-launcher-tui
+
+# Or from this directory
+go run .
+```
+
+### Build
+
+Build the standalone TUI launcher binary:
+
+```bash
+# From project root (recommended)
+make build-launcher-tui
+
+# Output will be at:
+# build/picoclaw-launcher-tui-<platform>-<arch>
+# with symlink build/picoclaw-launcher-tui
+
+# Or build directly from this directory
+go build -o picoclaw-launcher-tui .
+```
+
+### Key Features
+
+* 🖥️ Terminal-native interface - works over SSH, on headless servers, and in low-resource environments
+* ⚙️ AI model scheme and API key management
+* 📱 Communication channel configuration editor (Telegram/Discord/WeChat etc.)
+* 🔄 PicoClaw gateway daemon management (start/stop/status monitoring)
+* 💬 One-click launch of interactive AI chat session
+* 🎯 Keyboard-first design with intuitive shortcuts
+
+### Other Commands
+
+```bash
+# Run with custom config file path
+go run . /path/to/custom/config.json
+```
--- a/cmd/picoclaw/internal/agent/helpers.go
+++ b/cmd/picoclaw/internal/agent/helpers.go
@ -28,6 +28,8 @@ func agentCmd(message, sessionKey, model string, debug bool) error {
 		return fmt.Errorf("error loading config: %w", err)
 	}

+	logger.ConfigureFromEnv()
+
 	if debug {
 		logger.SetLevel(logger.DEBUG)
 		fmt.Println("🔍 Debug mode enabled")
--- a/cmd/picoclaw/internal/auth/command.go
+++ b/cmd/picoclaw/internal/auth/command.go
@ -16,6 +16,8 @@ func NewAuthCommand() *cobra.Command {
 		newLogoutCommand(),
 		newStatusCommand(),
 		newModelsCommand(),
+		newWeixinCommand(),
+		newWeComCommand(),
 	)

 	return cmd
--- a/cmd/picoclaw/internal/auth/command_test.go
+++ b/cmd/picoclaw/internal/auth/command_test.go
@ -32,6 +32,8 @@ func TestNewAuthCommand(t *testing.T) {
 		"logout",
 		"status",
 		"models",
+		"weixin",
+		"wecom",
 	}

 	subcommands := cmd.Commands()
--- a/cmd/picoclaw/internal/auth/wecom.go
+++ b/cmd/picoclaw/internal/auth/wecom.go
@ -0,0 +1,407 @@
+package auth
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/mdp/qrterminal/v3"
+	"github.com/spf13/cobra"
+
+	"github.com/sipeed/picoclaw/cmd/picoclaw/internal"
+	"github.com/sipeed/picoclaw/pkg/config"
+)
+
+const (
+	wecomQRSourceID          = "picoclaw"
+	wecomQRGenerateEndpoint  = "https://work.weixin.qq.com/ai/qc/generate"
+	wecomQRQueryEndpoint     = "https://work.weixin.qq.com/ai/qc/query_result"
+	wecomQRPageEndpoint      = "https://work.weixin.qq.com/ai/qc/gen"
+	wecomQRHTTPTimeout       = 15 * time.Second
+	wecomQRPollInterval      = 3 * time.Second
+	wecomQRPollTimeout       = 5 * time.Minute
+	wecomDefaultWebSocketURL = "wss://openws.work.weixin.qq.com"
+)
+
+type wecomQRScanner func(context.Context, wecomQRFlowOptions) (wecomQRBotInfo, error)
+
+type wecomQRFlowOptions struct {
+	HTTPClient    *http.Client
+	GenerateURL   string
+	QueryURL      string
+	QRCodePageURL string
+	SourceID      string
+	PollInterval  time.Duration
+	PollTimeout   time.Duration
+	Writer        io.Writer
+}
+
+type wecomQRBotInfo struct {
+	BotID  string
+	Secret string
+}
+
+type wecomQRSession struct {
+	SCode   string
+	AuthURL string
+}
+
+type wecomQRGenerateResponse struct {
+	ErrCode int    `json:"errcode,omitempty"`
+	ErrMsg  string `json:"errmsg,omitempty"`
+	Data    struct {
+		SCode   string `json:"scode"`
+		AuthURL string `json:"auth_url"`
+	} `json:"data"`
+}
+
+type wecomQRQueryResponse struct {
+	ErrCode int    `json:"errcode,omitempty"`
+	ErrMsg  string `json:"errmsg,omitempty"`
+	Data    struct {
+		Status  string `json:"status"`
+		BotInfo struct {
+			BotID  string `json:"botid"`
+			Secret string `json:"secret"`
+		} `json:"bot_info"`
+	} `json:"data"`
+}
+
+func newWeComCommand() *cobra.Command {
+	var timeout time.Duration
+
+	cmd := &cobra.Command{
+		Use:   "wecom",
+		Short: "Scan a WeCom QR code and configure channels.wecom",
+		Args:  cobra.NoArgs,
+		RunE: func(_ *cobra.Command, _ []string) error {
+			return authWeComCmd(timeout)
+		},
+	}
+
+	cmd.Flags().DurationVar(&timeout, "timeout", wecomQRPollTimeout, "How long to wait for QR confirmation")
+
+	return cmd
+}
+
+func authWeComCmd(timeout time.Duration) error {
+	return authWeComCmdWithScanner(context.Background(), os.Stdout, timeout, scanWeComQRCodeInteractive)
+}
+
+func authWeComCmdWithScanner(
+	ctx context.Context,
+	writer io.Writer,
+	timeout time.Duration,
+	scanner wecomQRScanner,
+) error {
+	if scanner == nil {
+		return fmt.Errorf("wecom QR scanner is nil")
+	}
+	if writer == nil {
+		writer = os.Stdout
+	}
+
+	cfg, err := internal.LoadConfig()
+	if err != nil {
+		return fmt.Errorf("failed to load config: %w", err)
+	}
+
+	opts := defaultWeComQRFlowOptions(timeout)
+	opts.Writer = writer
+
+	botInfo, err := scanner(ctx, opts)
+	if err != nil {
+		return err
+	}
+
+	applyWeComAuthResult(cfg, botInfo)
+
+	if saveErr := config.SaveConfig(internal.GetConfigPath(), cfg); saveErr != nil {
+		return fmt.Errorf("failed to save config: %w", saveErr)
+	}
+
+	fmt.Fprintln(writer)
+	fmt.Fprintln(writer, "WeCom connected.")
+	fmt.Fprintf(writer, "Bot ID: %s\n", botInfo.BotID)
+	fmt.Fprintf(writer, "Config: %s\n", internal.GetConfigPath())
+
+	return nil
+}
+
+func defaultWeComQRFlowOptions(timeout time.Duration) wecomQRFlowOptions {
+	if timeout <= 0 {
+		timeout = wecomQRPollTimeout
+	}
+
+	return wecomQRFlowOptions{
+		HTTPClient:    &http.Client{Timeout: wecomQRHTTPTimeout},
+		GenerateURL:   wecomQRGenerateEndpoint,
+		QueryURL:      wecomQRQueryEndpoint,
+		QRCodePageURL: wecomQRPageEndpoint,
+		SourceID:      wecomQRSourceID,
+		PollInterval:  wecomQRPollInterval,
+		PollTimeout:   timeout,
+		Writer:        os.Stdout,
+	}
+}
+
+func applyWeComAuthResult(cfg *config.Config, botInfo wecomQRBotInfo) {
+	cfg.Channels.WeCom.Enabled = true
+	cfg.Channels.WeCom.BotID = botInfo.BotID
+	cfg.Channels.WeCom.SetSecret(botInfo.Secret)
+	if strings.TrimSpace(cfg.Channels.WeCom.WebSocketURL) == "" {
+		cfg.Channels.WeCom.WebSocketURL = wecomDefaultWebSocketURL
+	}
+}
+
+func scanWeComQRCodeInteractive(ctx context.Context, opts wecomQRFlowOptions) (wecomQRBotInfo, error) {
+	opts = normalizeWeComQRFlowOptions(opts)
+
+	fmt.Fprintln(opts.Writer, "Requesting WeCom QR code...")
+
+	session, err := fetchWeComQRCode(ctx, opts)
+	if err != nil {
+		return wecomQRBotInfo{}, err
+	}
+
+	fmt.Fprintln(opts.Writer)
+	fmt.Fprintln(opts.Writer, "=======================================================")
+	fmt.Fprintln(opts.Writer, "Please scan the following QR code with WeCom:")
+	fmt.Fprintln(opts.Writer, "=======================================================")
+	fmt.Fprintln(opts.Writer)
+
+	qrterminal.GenerateWithConfig(session.AuthURL, qrterminal.Config{
+		Level:      qrterminal.L,
+		Writer:     opts.Writer,
+		HalfBlocks: true,
+	})
+
+	pageURL, err := buildWeComQRCodePageURL(opts.QRCodePageURL, opts.SourceID, session.SCode)
+	if err != nil {
+		return wecomQRBotInfo{}, err
+	}
+
+	fmt.Fprintln(opts.Writer)
+	fmt.Fprintf(opts.Writer, "QR Code Link: %s\n", pageURL)
+	fmt.Fprintln(opts.Writer)
+	fmt.Fprintln(opts.Writer, "Waiting for scan...")
+
+	return pollWeComQRCodeResult(ctx, opts, session.SCode)
+}
+
+func normalizeWeComQRFlowOptions(opts wecomQRFlowOptions) wecomQRFlowOptions {
+	if opts.HTTPClient == nil {
+		opts.HTTPClient = &http.Client{Timeout: wecomQRHTTPTimeout}
+	}
+	if strings.TrimSpace(opts.GenerateURL) == "" {
+		opts.GenerateURL = wecomQRGenerateEndpoint
+	}
+	if strings.TrimSpace(opts.QueryURL) == "" {
+		opts.QueryURL = wecomQRQueryEndpoint
+	}
+	if strings.TrimSpace(opts.QRCodePageURL) == "" {
+		opts.QRCodePageURL = wecomQRPageEndpoint
+	}
+	if strings.TrimSpace(opts.SourceID) == "" {
+		opts.SourceID = wecomQRSourceID
+	}
+	if opts.PollInterval <= 0 {
+		opts.PollInterval = wecomQRPollInterval
+	}
+	if opts.PollTimeout <= 0 {
+		opts.PollTimeout = wecomQRPollTimeout
+	}
+	if opts.Writer == nil {
+		opts.Writer = os.Stdout
+	}
+
+	return opts
+}
+
+func fetchWeComQRCode(ctx context.Context, opts wecomQRFlowOptions) (wecomQRSession, error) {
+	generateURL, err := buildWeComQRGenerateURL(opts.GenerateURL, opts.SourceID, wecomPlatformCode())
+	if err != nil {
+		return wecomQRSession{}, err
+	}
+
+	var resp wecomQRGenerateResponse
+	if err := doWeComJSONGet(ctx, opts.HTTPClient, generateURL, &resp); err != nil {
+		return wecomQRSession{}, fmt.Errorf("failed to get WeCom QR code: %w", err)
+	}
+	if resp.ErrCode != 0 {
+		return wecomQRSession{}, fmt.Errorf(
+			"failed to get WeCom QR code: errcode=%d errmsg=%s",
+			resp.ErrCode,
+			resp.ErrMsg,
+		)
+	}
+	if resp.Data.SCode == "" || resp.Data.AuthURL == "" {
+		return wecomQRSession{}, fmt.Errorf("failed to get WeCom QR code: response missing scode or auth_url")
+	}
+
+	return wecomQRSession{
+		SCode:   resp.Data.SCode,
+		AuthURL: resp.Data.AuthURL,
+	}, nil
+}
+
+func pollWeComQRCodeResult(ctx context.Context, opts wecomQRFlowOptions, scode string) (wecomQRBotInfo, error) {
+	if strings.TrimSpace(scode) == "" {
+		return wecomQRBotInfo{}, fmt.Errorf("missing WeCom QR scode")
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, opts.PollTimeout)
+	defer cancel()
+
+	var scannedPrinted bool
+
+	for {
+		status, err := queryWeComQRCodeStatus(timeoutCtx, opts, scode)
+		if err != nil {
+			if errors.Is(err, context.DeadlineExceeded) || errors.Is(timeoutCtx.Err(), context.DeadlineExceeded) {
+				return wecomQRBotInfo{}, fmt.Errorf("WeCom QR scan timed out after %s", opts.PollTimeout)
+			}
+			return wecomQRBotInfo{}, err
+		}
+
+		switch strings.ToLower(status.Data.Status) {
+		case "success":
+			if status.Data.BotInfo.BotID == "" || status.Data.BotInfo.Secret == "" {
+				return wecomQRBotInfo{}, fmt.Errorf("WeCom QR scan succeeded but bot credentials are missing")
+			}
+			return wecomQRBotInfo{
+				BotID:  status.Data.BotInfo.BotID,
+				Secret: status.Data.BotInfo.Secret,
+			}, nil
+		case "expired":
+			return wecomQRBotInfo{}, fmt.Errorf("WeCom QR code expired, please retry")
+		case "scaned", "scanned":
+			if !scannedPrinted {
+				fmt.Fprintln(opts.Writer, "QR code scanned. Confirm the login in WeCom.")
+				scannedPrinted = true
+			}
+		}
+
+		select {
+		case <-timeoutCtx.Done():
+			if errors.Is(timeoutCtx.Err(), context.DeadlineExceeded) {
+				return wecomQRBotInfo{}, fmt.Errorf("WeCom QR scan timed out after %s", opts.PollTimeout)
+			}
+			return wecomQRBotInfo{}, timeoutCtx.Err()
+		case <-time.After(opts.PollInterval):
+		}
+	}
+}
+
+func queryWeComQRCodeStatus(ctx context.Context, opts wecomQRFlowOptions, scode string) (wecomQRQueryResponse, error) {
+	queryURL, err := buildWeComQRQueryURL(opts.QueryURL, scode)
+	if err != nil {
+		return wecomQRQueryResponse{}, err
+	}
+
+	var resp wecomQRQueryResponse
+	if err := doWeComJSONGet(ctx, opts.HTTPClient, queryURL, &resp); err != nil {
+		return wecomQRQueryResponse{}, fmt.Errorf("failed to query WeCom QR result: %w", err)
+	}
+	if resp.ErrCode != 0 {
+		return wecomQRQueryResponse{}, fmt.Errorf(
+			"failed to query WeCom QR result: errcode=%d errmsg=%s",
+			resp.ErrCode,
+			resp.ErrMsg,
+		)
+	}
+
+	return resp, nil
+}
+
+func buildWeComQRGenerateURL(baseURL, sourceID string, platformCode int) (string, error) {
+	u, err := url.Parse(baseURL)
+	if err != nil {
+		return "", fmt.Errorf("invalid WeCom QR generate URL: %w", err)
+	}
+
+	query := u.Query()
+	query.Set("source", sourceID)
+	query.Set("sourceID", sourceID)
+	query.Set("plat", strconv.Itoa(platformCode))
+	u.RawQuery = query.Encode()
+
+	return u.String(), nil
+}
+
+func buildWeComQRQueryURL(baseURL, scode string) (string, error) {
+	u, err := url.Parse(baseURL)
+	if err != nil {
+		return "", fmt.Errorf("invalid WeCom QR query URL: %w", err)
+	}
+
+	query := u.Query()
+	query.Set("scode", scode)
+	u.RawQuery = query.Encode()
+
+	return u.String(), nil
+}
+
+func buildWeComQRCodePageURL(baseURL, sourceID, scode string) (string, error) {
+	u, err := url.Parse(baseURL)
+	if err != nil {
+		return "", fmt.Errorf("invalid WeCom QR page URL: %w", err)
+	}
+
+	query := u.Query()
+	query.Set("source", sourceID)
+	query.Set("sourceID", sourceID)
+	query.Set("scode", scode)
+	u.RawQuery = query.Encode()
+
+	return u.String(), nil
+}
+
+func doWeComJSONGet(ctx context.Context, client *http.Client, targetURL string, out any) error {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, targetURL, nil)
+	if err != nil {
+		return err
+	}
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, readErr := io.ReadAll(io.LimitReader(resp.Body, 8192))
+		if readErr != nil {
+			return fmt.Errorf("unexpected status %s", resp.Status)
+		}
+		return fmt.Errorf("unexpected status %s: %s", resp.Status, strings.TrimSpace(string(body)))
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(out); err != nil {
+		return fmt.Errorf("decode JSON response: %w", err)
+	}
+
+	return nil
+}
+
+func wecomPlatformCode() int {
+	switch runtime.GOOS {
+	case "darwin":
+		return 1
+	case "windows":
+		return 2
+	case "linux":
+		return 3
+	default:
+		return 0
+	}
+}
--- a/cmd/picoclaw/internal/auth/wecom_test.go
+++ b/cmd/picoclaw/internal/auth/wecom_test.go
@ -0,0 +1,157 @@
+package auth
+
+import (
+	"bytes"
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"path/filepath"
+	"strconv"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/sipeed/picoclaw/cmd/picoclaw/internal"
+	"github.com/sipeed/picoclaw/pkg/config"
+)
+
+func TestNewWeComCommand(t *testing.T) {
+	cmd := newWeComCommand()
+
+	require.NotNil(t, cmd)
+	assert.Equal(t, "wecom", cmd.Use)
+	assert.Equal(t, "Scan a WeCom QR code and configure channels.wecom", cmd.Short)
+	assert.NotNil(t, cmd.Flags().Lookup("timeout"))
+}
+
+func TestBuildWeComQRGenerateURL(t *testing.T) {
+	rawURL, err := buildWeComQRGenerateURL("https://example.com/ai/qc/generate", wecomQRSourceID, 3)
+	require.NoError(t, err)
+
+	parsed, err := url.Parse(rawURL)
+	require.NoError(t, err)
+
+	assert.Equal(t, wecomQRSourceID, parsed.Query().Get("source"))
+	assert.Equal(t, wecomQRSourceID, parsed.Query().Get("sourceID"))
+	assert.Equal(t, "3", parsed.Query().Get("plat"))
+}
+
+func TestBuildWeComQRCodePageURL(t *testing.T) {
+	rawURL, err := buildWeComQRCodePageURL("https://example.com/ai/qc/gen", wecomQRSourceID, "scode-1")
+	require.NoError(t, err)
+
+	parsed, err := url.Parse(rawURL)
+	require.NoError(t, err)
+
+	assert.Equal(t, wecomQRSourceID, parsed.Query().Get("source"))
+	assert.Equal(t, wecomQRSourceID, parsed.Query().Get("sourceID"))
+	assert.Equal(t, "scode-1", parsed.Query().Get("scode"))
+}
+
+func TestFetchWeComQRCode(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assert.Equal(t, "/generate", r.URL.Path)
+		assert.Equal(t, wecomQRSourceID, r.URL.Query().Get("source"))
+		assert.Equal(t, wecomQRSourceID, r.URL.Query().Get("sourceID"))
+		assert.Equal(t, strconv.Itoa(wecomPlatformCode()), r.URL.Query().Get("plat"))
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"data":{"scode":"scode-1","auth_url":"https://example.com/qr"}}`))
+	}))
+	defer server.Close()
+
+	opts := normalizeWeComQRFlowOptions(wecomQRFlowOptions{
+		HTTPClient:  server.Client(),
+		GenerateURL: server.URL + "/generate",
+		Writer:      bytes.NewBuffer(nil),
+	})
+
+	session, err := fetchWeComQRCode(context.Background(), opts)
+	require.NoError(t, err)
+	assert.Equal(t, "scode-1", session.SCode)
+	assert.Equal(t, "https://example.com/qr", session.AuthURL)
+}
+
+func TestPollWeComQRCodeResult(t *testing.T) {
+	var calls atomic.Int32
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		call := calls.Add(1)
+		assert.Equal(t, "/query", r.URL.Path)
+		assert.Equal(t, "scode-1", r.URL.Query().Get("scode"))
+		w.Header().Set("Content-Type", "application/json")
+		switch call {
+		case 1:
+			_, _ = w.Write([]byte(`{"data":{"status":"wait"}}`))
+		case 2:
+			_, _ = w.Write([]byte(`{"data":{"status":"scaned"}}`))
+		default:
+			_, _ = w.Write([]byte(`{"data":{"status":"success","bot_info":{"botid":"bot-1","secret":"secret-1"}}}`))
+		}
+	}))
+	defer server.Close()
+
+	var output bytes.Buffer
+	opts := normalizeWeComQRFlowOptions(wecomQRFlowOptions{
+		HTTPClient:   server.Client(),
+		QueryURL:     server.URL + "/query",
+		PollInterval: time.Millisecond,
+		PollTimeout:  time.Second,
+		Writer:       &output,
+	})
+
+	botInfo, err := pollWeComQRCodeResult(context.Background(), opts, "scode-1")
+	require.NoError(t, err)
+	assert.Equal(t, "bot-1", botInfo.BotID)
+	assert.Equal(t, "secret-1", botInfo.Secret)
+	assert.Contains(t, output.String(), "QR code scanned. Confirm the login in WeCom.")
+}
+
+func TestApplyWeComAuthResult(t *testing.T) {
+	cfg := config.DefaultConfig()
+	cfg.Channels.WeCom.WebSocketURL = ""
+
+	applyWeComAuthResult(cfg, wecomQRBotInfo{
+		BotID:  "bot-1",
+		Secret: "secret-1",
+	})
+
+	assert.True(t, cfg.Channels.WeCom.Enabled)
+	assert.Equal(t, "bot-1", cfg.Channels.WeCom.BotID)
+	assert.Equal(t, "secret-1", cfg.Channels.WeCom.Secret.String())
+	assert.Equal(t, wecomDefaultWebSocketURL, cfg.Channels.WeCom.WebSocketURL)
+}
+
+func TestAuthWeComCmdWithScanner(t *testing.T) {
+	tmpDir := t.TempDir()
+	configPath := filepath.Join(tmpDir, "config.json")
+
+	t.Setenv(config.EnvHome, tmpDir)
+	t.Setenv(config.EnvConfig, configPath)
+
+	var output bytes.Buffer
+	err := authWeComCmdWithScanner(
+		context.Background(),
+		&output,
+		time.Second,
+		func(_ context.Context, opts wecomQRFlowOptions) (wecomQRBotInfo, error) {
+			assert.Equal(t, wecomQRSourceID, opts.SourceID)
+			return wecomQRBotInfo{
+				BotID:  "bot-1",
+				Secret: "secret-1",
+			}, nil
+		},
+	)
+	require.NoError(t, err)
+
+	cfg, err := config.LoadConfig(internal.GetConfigPath())
+	require.NoError(t, err)
+	assert.True(t, cfg.Channels.WeCom.Enabled)
+	assert.Equal(t, "bot-1", cfg.Channels.WeCom.BotID)
+	assert.Equal(t, "secret-1", cfg.Channels.WeCom.Secret.String())
+	assert.Equal(t, wecomDefaultWebSocketURL, cfg.Channels.WeCom.WebSocketURL)
+	assert.Contains(t, output.String(), "WeCom connected.")
+}
--- a/cmd/picoclaw/internal/onboard/weixin.go
+++ b/cmd/picoclaw/internal/onboard/weixin.go
@ -1,4 +1,4 @@
-package onboard
+package auth

 import (
 	"context"
@ -27,7 +27,7 @@ to authorize your account. On success, the bot token is saved to the picoclaw
 config so you can start the gateway immediately.

 Example:
-  picoclaw onboard weixin`,
+  picoclaw auth weixin`,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			return runWeixinOnboard(baseURL, proxy, time.Duration(timeout)*time.Second)
 		},
--- a/cmd/picoclaw/internal/model/command_test.go
+++ b/cmd/picoclaw/internal/model/command_test.go
@ -58,24 +58,21 @@ func TestNewModelCommand(t *testing.T) {
 }

 func TestShowCurrentModel_WithDefaultModel(t *testing.T) {
-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "gpt-4",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "gpt-4", Model: "openai/gpt-4"},
-			{ModelName: "claude-3", Model: "anthropic/claude-3"},
+			{ModelName: "gpt-4", Model: "openai/gpt-4", APIKeys: config.SecureStrings{config.NewSecureString("test")}},
+			{
+				ModelName: "claude-3",
+				Model:     "anthropic/claude-3",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"gpt-4": {
-			APIKeys: []string{"test"},
-		},
-		"claude-3": {
-			APIKeys: []string{"test"},
-		},
-	}})
+	}

 	output := captureStdout(func() {
 		showCurrentModel(cfg)
@ -88,20 +85,16 @@ func TestShowCurrentModel_WithDefaultModel(t *testing.T) {
 }

 func TestShowCurrentModel_NoDefaultModel(t *testing.T) {
-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "gpt-4", Model: "openai/gpt-4"},
+			{ModelName: "gpt-4", Model: "openai/gpt-4", APIKeys: config.SecureStrings{config.NewSecureString("test")}},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"gpt-4": {
-			APIKeys: []string{"test"},
-		},
-	}})
+	}

 	output := captureStdout(func() {
 		showCurrentModel(cfg)
@ -124,25 +117,22 @@ func TestListAvailableModels_Empty(t *testing.T) {
 }

 func TestListAvailableModels_WithModels(t *testing.T) {
-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "gpt-4",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "gpt-4", Model: "openai/gpt-4"},
-			{ModelName: "claude-3", Model: "anthropic/claude-3"},
+			{ModelName: "gpt-4", Model: "openai/gpt-4", APIKeys: config.SecureStrings{config.NewSecureString("test")}},
+			{
+				ModelName: "claude-3",
+				Model:     "anthropic/claude-3",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 			{ModelName: "no-key-model", Model: "openai/test"},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"gpt-4": {
-			APIKeys: []string{"test"},
-		},
-		"claude-3": {
-			APIKeys: []string{"test"},
-		},
-	}})
+	}

 	output := captureStdout(func() {
 		listAvailableModels(cfg)
@ -157,24 +147,25 @@ func TestListAvailableModels_WithModels(t *testing.T) {
 func TestSetDefaultModel_ValidModel(t *testing.T) {
 	initTest(t)

-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "old-model",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "new-model", Model: "openai/new-model"},
-			{ModelName: "old-model", Model: "openai/old-model"},
+			{
+				ModelName: "new-model",
+				Model:     "openai/new-model",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
+			{
+				ModelName: "old-model",
+				Model:     "openai/old-model",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"new-model": {
-			APIKeys: []string{"test"},
-		},
-		"old-model": {
-			APIKeys: []string{"test"},
-		},
-	}})
+	}

 	output := captureStdout(func() {
 		err := setDefaultModel(configPath, cfg, "new-model")
@ -192,20 +183,20 @@ func TestSetDefaultModel_ValidModel(t *testing.T) {
 func TestSetDefaultModel_InvalidModel(t *testing.T) {
 	initTest(t)

-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "existing-model",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "existing-model", Model: "openai/existing"},
+			{
+				ModelName: "existing-model",
+				Model:     "openai/existing",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"existing-model": {
-			APIKeys: []string{"test"},
-		},
-	}})
+	}

 	assert.Error(t, setDefaultModel(configPath, cfg, "nonexistent-model"))
 }
@ -213,24 +204,21 @@ func TestSetDefaultModel_InvalidModel(t *testing.T) {
 func TestSetDefaultModel_ModelWithoutAPIKey(t *testing.T) {
 	initTest(t)

-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "existing-model",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "existing-model", Model: "openai/existing"},
+			{
+				ModelName: "existing-model",
+				Model:     "openai/existing",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 			{ModelName: "no-key-model", Model: "openai/nokey"},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"existing-model": {
-			APIKeys: []string{"test"},
-		},
-		"no-key-model": {
-			APIKeys: []string{""},
-		},
-	}})
+	}

 	assert.Error(t, setDefaultModel(configPath, cfg, "no-key-model"))
 }
@ -239,20 +227,20 @@ func TestSetDefaultModel_SaveConfigError(t *testing.T) {
 	// Use an invalid path to trigger save error
 	invalidPath := "/nonexistent/directory/config.json"

-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "old-model",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "new-model", Model: "openai/new-model"},
+			{
+				ModelName: "new-model",
+				Model:     "openai/new-model",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"new-model": {
-			APIKeys: []string{"test"},
-		},
-	}})
+	}

 	err := setDefaultModel(invalidPath, cfg, "new-model")

@ -284,20 +272,20 @@ func TestModelCommandExecution_Show(t *testing.T) {
 	initTest(t)

 	// Create a test config
-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "test-model",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "test-model", Model: "openai/test"},
+			{
+				ModelName: "test-model",
+				Model:     "openai/test",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"test-model": {
-			APIKeys: []string{"test"},
-		},
-	}})
+	}

 	err := config.SaveConfig(configPath, cfg)
 	require.NoError(t, err)
@ -315,25 +303,25 @@ func TestModelCommandExecution_Show(t *testing.T) {
 func TestModelCommandExecution_Set(t *testing.T) {
 	initTest(t)

-	sec := &config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"old-model": {
-			APIKeys: []string{"test"},
-		},
-		"new-model": {
-			APIKeys: []string{"test"},
-		},
-	}}
-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "old-model",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "old-model", Model: "openai/old"},
-			{ModelName: "new-model", Model: "openai/new"},
+			{
+				ModelName: "old-model",
+				Model:     "openai/old",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
+			{
+				ModelName: "new-model",
+				Model:     "openai/new",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 		},
-	}).WithSecurity(sec)
+	}

 	err := config.SaveConfig(configPath, cfg)
 	require.NoError(t, err)
@ -357,28 +345,30 @@ func TestModelCommandExecution_TooManyArgs(t *testing.T) {
 }

 func TestListAvailableModels_MarkerLogic(t *testing.T) {
-	cfg := (&config.Config{
+	cfg := &config.Config{
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				ModelName: "middle-model",
 			},
 		},
 		ModelList: []*config.ModelConfig{
-			{ModelName: "first-model", Model: "openai/first"},
-			{ModelName: "middle-model", Model: "openai/middle"},
-			{ModelName: "last-model", Model: "openai/last"},
+			{
+				ModelName: "first-model",
+				Model:     "openai/first",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
+			{
+				ModelName: "middle-model",
+				Model:     "openai/middle",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
+			{
+				ModelName: "last-model",
+				Model:     "openai/last",
+				APIKeys:   config.SecureStrings{config.NewSecureString("test")},
+			},
 		},
-	}).WithSecurity(&config.SecurityConfig{ModelList: map[string]config.ModelSecurityEntry{
-		"first-model": {
-			APIKeys: []string{"test"},
-		},
-		"middle-model": {
-			APIKeys: []string{"test"},
-		},
-		"last-model": {
-			APIKeys: []string{"test"},
-		},
-	}})
+	}

 	output := captureStdout(func() {
 		listAvailableModels(cfg)
--- a/cmd/picoclaw/internal/onboard/command.go
+++ b/cmd/picoclaw/internal/onboard/command.go
@ -16,7 +16,7 @@ func NewOnboardCommand() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "onboard",
 		Aliases: []string{"o"},
-		Short:   "Initialize picoclaw configuration, workspace, and channel accounts",
+		Short:   "Initialize picoclaw configuration and workspace",
 		// Run without subcommands → original onboard flow
 		Run: func(cmd *cobra.Command, args []string) {
 			if len(args) == 0 {
@ -30,8 +30,5 @@ func NewOnboardCommand() *cobra.Command {
 	cmd.Flags().BoolVar(&encrypt, "enc", false,
 		"Enable credential encryption (generates SSH key and prompts for passphrase)")

-	// Channel onboarding subcommands
-	cmd.AddCommand(newWeixinCommand())
-
 	return cmd
 }
--- a/cmd/picoclaw/internal/onboard/command_test.go
+++ b/cmd/picoclaw/internal/onboard/command_test.go
@ -13,7 +13,7 @@ func TestNewOnboardCommand(t *testing.T) {
 	require.NotNil(t, cmd)

 	assert.Equal(t, "onboard", cmd.Use)
-	assert.Equal(t, "Initialize picoclaw configuration, workspace, and channel accounts", cmd.Short)
+	assert.Equal(t, "Initialize picoclaw configuration and workspace", cmd.Short)

 	assert.Len(t, cmd.Aliases, 1)
 	assert.True(t, cmd.HasAlias("o"))
@ -28,6 +28,5 @@ func TestNewOnboardCommand(t *testing.T) {
 	encFlag := cmd.Flags().Lookup("enc")
 	require.NotNil(t, encFlag, "expected --enc flag to be registered")
 	assert.Equal(t, "false", encFlag.DefValue, "--enc should default to false")
-	assert.True(t, cmd.HasSubCommands())
-	assert.NotNil(t, cmd.Commands())
+	assert.False(t, cmd.HasSubCommands())
 }
--- a/cmd/picoclaw/internal/skills/command.go
+++ b/cmd/picoclaw/internal/skills/command.go
@ -31,7 +31,7 @@ func NewSkillsCommand() *cobra.Command {
 			d.workspace = cfg.WorkspacePath()
 			installer, err := skills.NewSkillInstaller(
 				d.workspace,
-				cfg.Tools.Skills.Github.Token(),
+				cfg.Tools.Skills.Github.Token.String(),
 				cfg.Tools.Skills.Github.Proxy,
 			)
 			if err != nil {
--- a/cmd/picoclaw/internal/skills/helpers.go
+++ b/cmd/picoclaw/internal/skills/helpers.go
@ -70,7 +70,7 @@ func skillsInstallFromRegistry(cfg *config.Config, registryName, slug string) er
 		ClawHub: skills.ClawHubConfig{
 			Enabled:         clawHubConfig.Enabled,
 			BaseURL:         clawHubConfig.BaseURL,
-			AuthToken:       clawHubConfig.AuthToken(),
+			AuthToken:       clawHubConfig.AuthToken.String(),
 			SearchPath:      clawHubConfig.SearchPath,
 			SkillsPath:      clawHubConfig.SkillsPath,
 			DownloadPath:    clawHubConfig.DownloadPath,
@ -243,7 +243,7 @@ func skillsSearchCmd(query string) {
 		ClawHub: skills.ClawHubConfig{
 			Enabled:         clawHubConfig.Enabled,
 			BaseURL:         clawHubConfig.BaseURL,
-			AuthToken:       clawHubConfig.AuthToken(),
+			AuthToken:       clawHubConfig.AuthToken.String(),
 			SearchPath:      clawHubConfig.SearchPath,
 			SkillsPath:      clawHubConfig.SkillsPath,
 			DownloadPath:    clawHubConfig.DownloadPath,
--- a/config/config.example.json
+++ b/config/config.example.json
@ -10,6 +10,7 @@
      "max_tool_iterations": 20,
      "summarize_message_threshold": 20,
      "summarize_token_percent": 75,
+      "split_on_marker": false,
      "tool_feedback": {
        "enabled": false,
        "max_args_length": 300
@ -129,6 +130,10 @@
      "encrypt_key": "",
      "verification_token": "",
      "allow_from": [],
+      "placeholder": {
+        "enabled": true,
+        "text": ["Thinking...", "Processing...", "Typing..."]
+      },
      "reasoning_channel_id": "",
      "random_reaction_emoji": [],
      "is_lark": false
@ -160,9 +165,11 @@
      },
      "placeholder": {
        "enabled": true,
-        "text": "Thinking... 💭"
+        "text": ["Thinking...", "Processing...", "Typing..."]
      },
-      "reasoning_channel_id": ""
+      "reasoning_channel_id": "",
+      "crypto_database_path": "",
+      "crypto_passphrase": "YOUR_MATRIX_CRYPTO_PICKLE_KEY"
    },
    "line": {
      "enabled": false,
@ -182,39 +189,13 @@
      "reasoning_channel_id": ""
    },
    "wecom": {
-      "_comment": "WeCom Bot - Easier setup, supports group chats",
-      "enabled": false,
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_43_CHAR_ENCODING_AES_KEY",
-      "webhook_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=YOUR_KEY",
-      "webhook_path": "/webhook/wecom",
-      "allow_from": [],
-      "reply_timeout": 5,
-      "reasoning_channel_id": ""
-    },
-    "wecom_app": {
-      "_comment": "WeCom App (自建应用) - More features, proactive messaging, private chat only.",
-      "enabled": false,
-      "corp_id": "YOUR_CORP_ID",
-      "corp_secret": "YOUR_CORP_SECRET",
-      "agent_id": 1000002,
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_43_CHAR_ENCODING_AES_KEY",
-      "webhook_path": "/webhook/wecom-app",
-      "allow_from": [],
-      "reply_timeout": 5,
-      "reasoning_channel_id": ""
-    },
-    "wecom_aibot": {
-      "_comment": "WeCom AI Bot (智能机器人) - Official WeCom AI Bot integration, supports proactive messaging and private chats.",
+      "_comment": "WeCom AI Bot over WebSocket.",
      "enabled": false,
      "bot_id": "YOUR_BOT_ID",
      "secret": "YOUR_SECRET",
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_43_CHAR_ENCODING_AES_KEY",
-      "webhook_path": "/webhook/wecom-aibot",
-      "max_steps": 10,
-      "welcome_message": "Hello! I'm your AI assistant. How can I help you today?",
+      "websocket_url": "wss://openws.work.weixin.qq.com",
+      "send_thinking_message": true,
+      "allow_from": [],
      "reasoning_channel_id": ""
    },
    "pico": {
@ -247,13 +228,8 @@
      "nickserv_password": "",
      "sasl_user": "",
      "sasl_password": "",
-      "channels": [
-        "#mychannel"
-      ],
-      "request_caps": [
-        "server-time",
-        "message-tags"
-      ],
+      "channels": ["#mychannel"],
+      "request_caps": ["server-time", "message-tags"],
      "allow_from": [],
      "group_trigger": {
        "mention_only": true
@ -264,79 +240,6 @@
      "reasoning_channel_id": ""
    }
  },
-  "providers": {
-    "_comment": "DEPRECATED: Use model_list instead. This will be removed in a future version",
-    "anthropic": {
-      "api_key": "",
-      "api_base": ""
-    },
-    "openai": {
-      "api_key": "",
-      "api_base": "",
-      "web_search": true
-    },
-    "openrouter": {
-      "api_key": "sk-or-v1-xxx",
-      "api_base": ""
-    },
-    "groq": {
-      "api_key": "gsk_xxx",
-      "api_base": ""
-    },
-    "zhipu": {
-      "api_key": "YOUR_ZHIPU_API_KEY",
-      "api_base": ""
-    },
-    "gemini": {
-      "api_key": "",
-      "api_base": ""
-    },
-    "vllm": {
-      "api_key": "",
-      "api_base": ""
-    },
-    "nvidia": {
-      "api_key": "nvapi-xxx",
-      "api_base": "",
-      "proxy": "http://127.0.0.1:7890"
-    },
-    "moonshot": {
-      "api_key": "sk-xxx",
-      "api_base": ""
-    },
-    "qwen": {
-      "api_key": "sk-xxx",
-      "api_base": ""
-    },
-    "ollama": {
-      "api_key": "",
-      "api_base": "http://localhost:11434/v1"
-    },
-    "cerebras": {
-      "api_key": "",
-      "api_base": ""
-    },
-    "volcengine": {
-      "api_key": "",
-      "api_base": ""
-    },
-    "mistral": {
-      "api_key": "",
-      "api_base": "https://api.mistral.ai/v1"
-    },
-    "avian": {
-      "api_key": "",
-      "api_base": "https://api.avian.io/v1"
-    },
-    "longcat": {
-      "api_key": "",
-      "api_base": "https://api.longcat.chat/openai"
-    },
-    "modelscope": {
-      "api_key": "",
-      "api_base": "https://api-inference.modelscope.cn/v1"
-    }
-  },
  "tools": {
    "allow_read_paths": null,
    "allow_write_paths": null,
@ -348,9 +251,7 @@
      "brave": {
        "enabled": false,
        "api_key": "YOUR_BRAVE_API_KEY",
-        "api_keys": [
-          "YOUR_BRAVE_API_KEY"
-        ],
+        "api_keys": ["YOUR_BRAVE_API_KEY"],
        "max_results": 5
      },
      "tavily": {
@ -366,9 +267,7 @@
      "perplexity": {
        "enabled": false,
        "api_key": "pplx-xxx",
-        "api_keys": [
-          "pplx-xxx"
-        ],
+        "api_keys": ["pplx-xxx"],
        "max_results": 5
      },
      "searxng": {
@ -383,6 +282,12 @@
        "search_engine": "search_std",
        "max_results": 5
      },
+      "baidu_search": {
+        "enabled": false,
+        "api_key": "",
+        "base_url": "https://qianfan.baidubce.com/v2/ai_search/web_search",
+        "max_results": 10
+      },
      "fetch_limit_bytes": 10485760,
      "private_host_whitelist": []
    },
@ -411,19 +316,12 @@
        "filesystem": {
          "enabled": false,
          "command": "npx",
-          "args": [
-            "-y",
-            "@modelcontextprotocol/server-filesystem",
-            "/tmp"
-          ]
+          "args": ["-y", "@modelcontextprotocol/server-filesystem", "/tmp"]
        },
        "github": {
          "enabled": false,
          "command": "npx",
-          "args": [
-            "-y",
-            "@modelcontextprotocol/server-github"
-          ],
+          "args": ["-y", "@modelcontextprotocol/server-github"],
          "env": {
            "GITHUB_PERSONAL_ACCESS_TOKEN": "YOUR_GITHUB_TOKEN"
          }
@ -431,10 +329,7 @@
        "brave-search": {
          "enabled": false,
          "command": "npx",
-          "args": [
-            "-y",
-            "@modelcontextprotocol/server-brave-search"
-          ],
+          "args": ["-y", "@modelcontextprotocol/server-brave-search"],
          "env": {
            "BRAVE_API_KEY": "YOUR_BRAVE_API_KEY"
          }
@ -451,10 +346,7 @@
        "slack": {
          "enabled": false,
          "command": "npx",
-          "args": [
-            "-y",
-            "@modelcontextprotocol/server-slack"
-          ],
+          "args": ["-y", "@modelcontextprotocol/server-slack"],
          "env": {
            "SLACK_BOT_TOKEN": "YOUR_SLACK_BOT_TOKEN",
            "SLACK_TEAM_ID": "YOUR_SLACK_TEAM_ID"
--- a/docs/channels/matrix/README.md
+++ b/docs/channels/matrix/README.md
@ -22,10 +22,12 @@ Add this to `config.json`:
      },
      "placeholder": {
        "enabled": true,
-        "text": "Thinking..."
+        "text": ["Thinking...", "Processing...", "Typing..."]
      },
      "reasoning_channel_id": "",
-      "message_format": "richtext"
+      "message_format": "richtext",
+      "crypto_database_path": "",
+      "crypto_passphrase": "YOUR_MATRIX_CRYPTO_PICKLE_KEY"
    }
  }
 }
@ -43,9 +45,18 @@ Add this to `config.json`:
 | join_on_invite       | bool     | No       | Auto-join invited rooms |
 | allow_from           | []string | No       | User whitelist (Matrix user IDs) |
 | group_trigger        | object   | No       | Group trigger strategy (`mention_only` / `prefixes`) |
-| placeholder          | object   | No       | Placeholder message config |
+| placeholder          | object   | No       | Placeholder message config (see below) |
 | reasoning_channel_id | string   | No       | Target channel for reasoning output |
 | message_format       | string   | No       | Output format: `"richtext"` (default) renders markdown as HTML; `"plain"` sends plain text only |
+| crypto_database_path | string   | No       | Path to store the crypto database (uses workspace path `~/.picoclaw/workspace` if empty) |
+| crypto_passphrase    | string   | No       | Serialization key for encrypting session keys in the database; must remain unchanged once set |
+
+### Placeholder Config
+
+| Field   | Type           | Required | Description |
+|---------|----------------|----------|-------------|
+| enabled | bool           | No       | Enable placeholder messages (default: false) |
+| text    | string/[]string | No       | Placeholder text(s). Can be a single string or array of strings. If multiple texts are provided, one is randomly selected at runtime. Default: "Thinking..." |

 ## 3. Currently Supported

@ -58,6 +69,7 @@ Add this to `config.json`:
 - Typing state (`m.typing`)
 - Placeholder message + final reply replacement
 - Auto-join invited rooms (can be disabled)
+- End-to-end encryption (E2EE) support for encrypted messages

 ## 4. TODO

--- a/docs/channels/matrix/README.zh.md
+++ b/docs/channels/matrix/README.zh.md
@ -22,9 +22,12 @@
      },
      "placeholder": {
        "enabled": true,
-        "text": "Thinking... 💭"
+        "text": ["Thinking...", "Processing...", "Typing..."]
      },
-      "reasoning_channel_id": ""
+      "reasoning_channel_id": "",
+      "message_format": "richtext",
+      "crypto_database_path": "",
+      "crypto_passphrase": "YOUR_MATRIX_CRYPTO_PICKLE_KEY"
    }
  }
 }
@ -45,6 +48,15 @@
 | placeholder          | object   | 否   | 占位消息配置 |
 | reasoning_channel_id | string   | 否   | 思维链输出目标通道 |
 | message_format       | string   | 否   | 消息格式：`richtext`（富文本）或 `plain`（纯文本） |
+| crypto_database_path | string   | 否   | 加密数据库存储路径（为空时使用工作空间路径 `~/.picoclaw/workspace`） |
+| crypto_passphrase    | string   | 否   | 加密数据库中 session key 的序列化密钥；设置后不能更改 |
+
+### 占位消息配置 (Placeholder)
+
+| 字段    | 类型            | 必填 | 说明 |
+|---------|-----------------|------|------|
+| enabled | bool            | 否   | 是否启用占位消息（默认：false） |
+| text    | string/[]string | 否   | 占位文本。可以是单个字符串或字符串数组。如果提供多个文本，运行时会随机选择一个。默认："Thinking..." |

 ## 3. 当前支持

@ -56,6 +68,7 @@
 - Typing 状态（`m.typing`）
 - 占位消息（`Thinking... 💭`）+ 最终回复替换
 - 自动加入邀请房间（可关闭）
+- 端对端加密（E2EE）消息支持

 ## 4. TODO

--- a/docs/channels/wecom/README.md
+++ b/docs/channels/wecom/README.md
@ -0,0 +1,104 @@
+> Back to [README](../../../README.md)
+
+# WeCom
+
+PicoClaw now exposes WeCom as a single `channels.wecom` channel built on the official WeCom AI Bot WebSocket API.
+This replaces the legacy `wecom`, `wecom_app`, and `wecom_aibot` split with one configuration model.
+
+## What This Channel Supports
+
+- Direct chat and group chat delivery
+- Channel-side streaming replies over WeCom's AI Bot protocol
+- Incoming text, voice, image, file, video, and mixed messages
+- Outbound text and media replies (`image`, `file`, `voice`, `video`)
+- QR-based CLI onboarding with `picoclaw auth wecom`
+- Shared allowlist and `reasoning_channel_id` routing
+
+> No public webhook callback URL is required for this channel. PicoClaw opens an outbound WebSocket connection to WeCom.
+
+## Quick Start
+
+### Option 1: QR Login From CLI
+
+Run:
+
+```bash
+picoclaw auth wecom
+```
+
+The command prints a QR code in the terminal, waits for confirmation in WeCom, and then writes the resulting
+`bot_id` and `secret` into `channels.wecom`.
+
+Use `--timeout` if you want to wait longer:
+
+```bash
+picoclaw auth wecom --timeout 10m
+```
+
+### Option 2: Configure Manually
+
+```json
+{
+  "channels": {
+    "wecom": {
+      "enabled": true,
+      "bot_id": "YOUR_BOT_ID",
+      "secret": "YOUR_SECRET",
+      "websocket_url": "wss://openws.work.weixin.qq.com",
+      "send_thinking_message": true,
+      "allow_from": [],
+      "reasoning_channel_id": ""
+    }
+  }
+}
+```
+
+## Configuration
+
+| Field | Type | Required | Description |
+| ----- | ---- | -------- | ----------- |
+| `enabled` | bool | No | Enables the WeCom channel. |
+| `bot_id` | string | Yes | WeCom AI Bot identifier. Required when the channel is enabled. |
+| `secret` | string | Yes | WeCom AI Bot secret. Required when the channel is enabled. |
+| `websocket_url` | string | No | WebSocket endpoint. Defaults to `wss://openws.work.weixin.qq.com`. |
+| `send_thinking_message` | bool | No | Sends an initial `Processing...` chunk before the final streamed reply. Defaults to `true`. |
+| `allow_from` | array | No | Sender allowlist. Empty means allow all senders. |
+| `reasoning_channel_id` | string | No | Optional destination for reasoning/thinking output. |
+
+## Runtime Behavior
+
+- PicoClaw keeps the active WeCom turn so normal replies can continue the same stream when possible.
+- If streaming is no longer available, replies fall back to active push delivery to the resolved chat route.
+- Incoming media is downloaded into the media store before being handed to the agent.
+- Outbound media is uploaded to WeCom in temporary chunks and then sent as a regular media message.
+
+## Migration Notes
+
+This branch removes the old multi-channel WeCom model.
+
+| Previous config | Now |
+| --------------- | --- |
+| `channels.wecom` webhook bot | Replace with `channels.wecom` using `bot_id` + `secret`. |
+| `channels.wecom_app` | Remove it and use `channels.wecom`. |
+| `channels.wecom_aibot` | Move the config to `channels.wecom`. |
+| `token`, `encoding_aes_key`, `webhook_url`, `webhook_path` | No longer used by the WeCom channel. |
+| `corp_id`, `corp_secret`, `agent_id` | No longer used by the WeCom channel. |
+| `welcome_message`, `processing_message`, `max_steps` under WeCom | No longer part of the WeCom channel config. |
+
+## Troubleshooting
+
+### `picoclaw auth wecom` times out
+
+- Re-run with a larger `--timeout`.
+- Make sure the QR code was confirmed inside WeCom, not only scanned.
+
+### WebSocket connection fails
+
+- Verify `bot_id` and `secret`.
+- Confirm the host can reach `wss://openws.work.weixin.qq.com`.
+
+### Replies do not arrive
+
+- Check whether `allow_from` blocks the sender.
+- Check launcher or startup validation for missing `channels.wecom.bot_id` / `channels.wecom.secret`.
+
--- a/docs/channels/wecom/README.zh.md
+++ b/docs/channels/wecom/README.zh.md
@ -0,0 +1,104 @@
+> 返回 [README](../../../README.zh.md)
+
+# 企业微信
+
+PicoClaw 现在将企业微信统一为一个 `channels.wecom` 渠道，并基于企业微信官方 AI Bot WebSocket 协议实现。
+这取代了旧的 `wecom`、`wecom_app`、`wecom_aibot` 三套配置模型。
+
+## 当前渠道能力
+
+- 支持私聊和群聊
+- 支持企业微信侧流式回复
+- 支持接收文本、语音、图片、文件、视频和 mixed 消息
+- 支持发送文本与媒体消息（`image`、`file`、`voice`、`video`）
+- 支持通过 `picoclaw auth wecom` 扫码写入配置
+- 支持统一白名单与 `reasoning_channel_id`
+
+> 这个渠道不再需要公网 webhook 回调地址。PicoClaw 会主动向企业微信发起 WebSocket 连接。
+
+## 快速开始
+
+### 方式 1：命令行扫码登录
+
+运行：
+
+```bash
+picoclaw auth wecom
+```
+
+该命令会在终端打印二维码，等待你在企业微信中确认，然后把生成的 `bot_id` 和 `secret` 写入
+`channels.wecom`。
+
+如果需要更长等待时间，可以加 `--timeout`：
+
+```bash
+picoclaw auth wecom --timeout 10m
+```
+
+### 方式 2：手动配置
+
+```json
+{
+  "channels": {
+    "wecom": {
+      "enabled": true,
+      "bot_id": "YOUR_BOT_ID",
+      "secret": "YOUR_SECRET",
+      "websocket_url": "wss://openws.work.weixin.qq.com",
+      "send_thinking_message": true,
+      "allow_from": [],
+      "reasoning_channel_id": ""
+    }
+  }
+}
+```
+
+## 配置字段
+
+| 字段 | 类型 | 必填 | 说明 |
+| ---- | ---- | ---- | ---- |
+| `enabled` | bool | 否 | 是否启用企业微信渠道。 |
+| `bot_id` | string | 是 | 企业微信 AI Bot 标识。渠道启用时必填。 |
+| `secret` | string | 是 | 企业微信 AI Bot 密钥。渠道启用时必填。 |
+| `websocket_url` | string | 否 | WebSocket 地址，默认 `wss://openws.work.weixin.qq.com`。 |
+| `send_thinking_message` | bool | 否 | 是否在流式最终回复前先发送一段 `Processing...` 开场消息，默认 `true`。 |
+| `allow_from` | array | 否 | 发送者白名单；空数组表示允许所有发送者。 |
+| `reasoning_channel_id` | string | 否 | 可选的 reasoning/thinking 输出目标。 |
+
+## 运行时行为
+
+- PicoClaw 会保留当前会话对应的企业微信 turn，优先继续同一个流式回复。
+- 如果流式上下文已经失效，回复会自动回退到主动推送消息。
+- 收到的媒体会先下载到 media store，再交给 Agent 处理。
+- 发出的媒体会先按分片上传到企业微信，再作为普通媒体消息发送。
+
+## 迁移说明
+
+这个分支移除了旧的多通道企业微信模型。
+
+| 旧配置 | 现在怎么做 |
+| ------ | ---------- |
+| `channels.wecom` webhook 机器人 | 改为使用 `bot_id` + `secret` 的 `channels.wecom`。 |
+| `channels.wecom_app` | 删除，统一迁移到 `channels.wecom`。 |
+| `channels.wecom_aibot` | 配置迁移到 `channels.wecom`。 |
+| `token`、`encoding_aes_key`、`webhook_url`、`webhook_path` | 企业微信渠道不再使用这些字段。 |
+| `corp_id`、`corp_secret`、`agent_id` | 企业微信渠道不再使用这些字段。 |
+| 企业微信下的 `welcome_message`、`processing_message`、`max_steps` | 不再属于企业微信渠道配置。 |
+
+## 常见问题
+
+### `picoclaw auth wecom` 超时
+
+- 用更大的 `--timeout` 重新执行。
+- 确认是在企业微信里完成了确认，而不只是扫描二维码。
+
+### WebSocket 连接失败
+
+- 检查 `bot_id` 和 `secret` 是否正确。
+- 确认运行环境可以访问 `wss://openws.work.weixin.qq.com`。
+
+### 消息没有回到企业微信
+
+- 检查 `allow_from` 是否拦截了发送者。
+- 检查启动日志或 launcher 校验，确认 `channels.wecom.bot_id` / `channels.wecom.secret` 已填写。
+
--- a/docs/channels/weixin/README.md
+++ b/docs/channels/weixin/README.md
@ -7,7 +7,7 @@ PicoClaw supports connecting to your personal WeChat account using the official
 The easiest way to set up the Weixin channel is using the interactive onboarding command:

 ```bash
-picoclaw onboard weixin
+picoclaw auth weixin
 ```

 This command will:
--- a/docs/channels/weixin/README.zh.md
+++ b/docs/channels/weixin/README.zh.md
@ -7,7 +7,7 @@ PicoClaw 支持使用腾讯官方 iLink API 连接您的个人微信账号。
 最简单的方法是使用交互式 onboarding 命令进行一键激活：

 ```bash
-picoclaw onboard weixin
+picoclaw auth weixin
 ```

 该命令将：
--- a/docs/chat-apps.md
+++ b/docs/chat-apps.md
@ -6,7 +6,7 @@

 Talk to your picoclaw through Telegram, Discord, WhatsApp, Matrix, QQ, DingTalk, LINE, WeCom, Feishu, Slack, IRC, OneBot, MaixCam, or Pico (native protocol)

-> **Note**: All webhook-based channels (LINE, WeCom, etc.) are served on a single shared Gateway HTTP server (`gateway.host`:`gateway.port`, default `127.0.0.1:18790`). There are no per-channel ports to configure. Note: Feishu uses WebSocket/SDK mode and does not use the shared HTTP webhook server.
+> **Note**: Channels that rely on HTTP callbacks share a single Gateway HTTP server (`gateway.host`:`gateway.port`, default `127.0.0.1:18790`). Socket/stream-based channels such as Feishu, DingTalk, and WeCom do not rely on the shared webhook server for inbound delivery.

 | Channel              | Difficulty         | Description                                           | Documentation                                                                                                    |
 | -------------------- | ------------------ | ----------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------- |
@ -19,7 +19,7 @@ Talk to your picoclaw through Telegram, Discord, WhatsApp, Matrix, QQ, DingTalk,
 | **QQ**               | ⭐⭐ Medium        | Official bot API, Chinese community                   | [Docs](channels/qq/README.md)                                                                                |
 | **DingTalk**         | ⭐⭐ Medium        | Stream mode (no public IP needed), enterprise         | [Docs](channels/dingtalk/README.md)                                                                          |
 | **LINE**             | ⭐⭐⭐ Advanced    | HTTPS Webhook required                                | [Docs](channels/line/README.md)                                                                              |
-| **WeCom (企业微信)** | ⭐⭐⭐ Advanced    | Group Bot (Webhook), custom App (API), AI Bot         | [Bot](channels/wecom/wecom_bot/README.md) / [App](channels/wecom/wecom_app/README.md) / [AI Bot](channels/wecom/wecom_aibot/README.md) |
+| **WeCom (企业微信)** | ⭐⭐⭐ Advanced    | Official AI Bot over WebSocket, streaming + media     | [Docs](channels/wecom/README.md) |
 | **Feishu (飞书)**    | ⭐⭐⭐ Advanced    | Enterprise collaboration, feature-rich                | [Docs](channels/feishu/README.md)                                                                            |
 | **IRC**              | ⭐⭐ Medium        | Server + TLS configuration                            | [Docs](#irc)                                                                                                     |
 | **OneBot**           | ⭐⭐ Medium        | NapCat/Go-CQHTTP compatible, community ecosystem      | [Docs](channels/onebot/README.md)                                                                            |
@ -190,7 +190,7 @@ PicoClaw supports connecting to your personal WeChat account using the official

 Run the interactive QR login flow:
 ```bash
-picoclaw onboard weixin
+picoclaw auth weixin
 ```
 Scan the printed QR code with your WeChat mobile app. On success, the token is saved to your config.

@ -380,102 +380,34 @@ picoclaw gateway
 <details>
 <summary><b>WeCom (企业微信)</b></summary>

-PicoClaw supports three types of WeCom integration:
+PicoClaw now exposes WeCom as a single AI Bot channel over WebSocket.
+No public webhook callback URL is required.

-**Option 1: WeCom Bot (Bot)** - Easier setup, supports group chats
-**Option 2: WeCom App (Custom App)** - More features, proactive messaging, private chat only
-**Option 3: WeCom AI Bot (AI Bot)** - Official AI Bot, streaming replies, supports group & private chat
+See [WeCom Configuration Guide](channels/wecom/README.md) for the full configuration reference and migration notes.

-See [WeCom AI Bot Configuration Guide](channels/wecom/wecom_aibot/README.md) for detailed setup instructions.
+**Quick Setup - Recommended**

-**Quick Setup - WeCom Bot:**
+**1. Authenticate**

-**1. Create a bot**
+```bash
+picoclaw auth wecom
+```

-* Go to WeCom Admin Console → Group Chat → Add Group Bot
-* Copy the webhook URL (format: `https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=xxx`)
+This command shows a QR code, waits for approval in WeCom, and writes `bot_id` + `secret` into `channels.wecom`.

-**2. Configure**
+**2. Configure manually if needed**

 ```json
 {
  "channels": {
    "wecom": {
      "enabled": true,
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_ENCODING_AES_KEY",
-      "webhook_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=YOUR_KEY",
-      "webhook_path": "/webhook/wecom",
-      "allow_from": []
-    }
-  }
-}
-```
-
-> WeCom webhook is served on the shared Gateway server (`gateway.host`:`gateway.port`, default `127.0.0.1:18790`).
-
-**Quick Setup - WeCom App:**
-
-**1. Create an app**
-
-* Go to WeCom Admin Console → App Management → Create App
-* Copy **AgentId** and **Secret**
-* Go to "My Company" page, copy **CorpID**
-
-**2. Configure receive message**
-
-* In App details, click "Receive Message" → "Set API"
-* Set URL to `http://your-server:18790/webhook/wecom-app`
-* Generate **Token** and **EncodingAESKey**
-
-**3. Configure**
-
-```json
-{
-  "channels": {
-    "wecom_app": {
-      "enabled": true,
-      "corp_id": "wwxxxxxxxxxxxxxxxx",
-      "corp_secret": "YOUR_CORP_SECRET",
-      "agent_id": 1000002,
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_ENCODING_AES_KEY",
-      "webhook_path": "/webhook/wecom-app",
-      "allow_from": []
-    }
-  }
-}
-```
-
-**4. Run**
-
-```bash
-picoclaw gateway
-```
-
-> **Note**: WeCom webhook callbacks are served on the Gateway port (default 18790). Use a reverse proxy for HTTPS.
-
-**Quick Setup - WeCom AI Bot:**
-
-**1. Create an AI Bot**
-
-* Go to WeCom Admin Console → App Management → AI Bot
-* In the AI Bot settings, configure callback URL: `http://your-server:18790/webhook/wecom-aibot`
-* Copy **Token** and click "Random Generate" for **EncodingAESKey**
-
-**2. Configure**
-
-```json
-{
-  "channels": {
-    "wecom_aibot": {
-      "enabled": true,
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_43_CHAR_ENCODING_AES_KEY",
-      "webhook_path": "/webhook/wecom-aibot",
+      "bot_id": "YOUR_BOT_ID",
+      "secret": "YOUR_SECRET",
+      "websocket_url": "wss://openws.work.weixin.qq.com",
+      "send_thinking_message": true,
      "allow_from": [],
-      "welcome_message": "Hello! How can I help you?",
-      "processing_message": "⏳ Processing, please wait. The results will be sent shortly."
+      "reasoning_channel_id": ""
    }
  }
 }
@ -487,7 +419,7 @@ picoclaw gateway
 picoclaw gateway
 ```

-> **Note**: WeCom AI Bot uses streaming pull protocol — no reply timeout concerns. Long tasks (>30 seconds) automatically switch to `response_url` push delivery.
+> Legacy `wecom_app` and `wecom_aibot` entries are replaced by the unified `channels.wecom` config in this branch.

 </details>

--- a/docs/configuration.md
+++ b/docs/configuration.md
@ -31,6 +31,22 @@ PICOCLAW_HOME=/opt/picoclaw picoclaw agent
 PICOCLAW_HOME=/srv/picoclaw PICOCLAW_CONFIG=/srv/picoclaw/main.json picoclaw gateway
 ```

+### Gateway Log Level
+
+`gateway.log_level` controls Gateway log verbosity and is configurable in `config.json`.
+
+```json
+{
+  "gateway": {
+    "log_level": "fatal"
+  }
+}
+```
+
+When omitted, the default is `fatal`. Supported values: `debug`, `info`, `warn`, `error`, `fatal`.
+
+You can also override this with the environment variable `PICOCLAW_LOG_LEVEL`.
+
 ### Workspace Layout

 PicoClaw stores data in your configured workspace (default: `~/.picoclaw/workspace`):
@ -454,6 +470,70 @@ This design also enables **multi-agent support** with flexible provider selectio
 - **Load balancing**: Distribute requests across multiple endpoints
 - **Centralized configuration**: Manage all providers in one place

+#### 🔒 Security Configuration (Recommended)
+
+PicoClaw supports separating sensitive data (API keys, tokens, secrets) from your main configuration by storing them in a `.security.yml` file.
+
+**Key Benefits:**
+- **Security**: Sensitive data is never in your main config file
+- **Easy sharing**: Share config.json without exposing API keys
+- **Version control**: Add `.security.yml` to `.gitignore`
+- **Flexible deployment**: Different environments can use different security files
+
+**Quick Setup:**
+
+1. Create `~/.picoclaw/.security.yml` with your API keys:
+```yaml
+model_list:
+  gpt-5.4:
+    api_keys:
+      - "sk-proj-your-actual-openai-key"
+  claude-sonnet-4.6:
+    api_keys:
+      - "sk-ant-your-actual-anthropic-key"
+channels:
+  telegram:
+    token: "your-telegram-bot-token"
+web:
+  brave:
+    api_keys:
+      - "BSAyour-brave-api-key"
+  glm_search:
+    api_key: "your-glm-search-api-key"
+```
+
+2. Set proper permissions:
+```bash
+chmod 600 ~/.picoclaw/.security.yml
+```
+
+3. Remove sensitive fields from `config.json` (recommended):
+```json
+{
+  "model_list": [
+    {
+      "model_name": "gpt-5.4",
+      "model": "openai/gpt-5.4"
+      // api_key loaded from .security.yml
+    }
+  ],
+  "channels": {
+    "telegram": {
+      "enabled": true"
+      // token loaded from .security.yml
+    }
+  }
+}
+```
+
+**How it works:**
+- Values from `.security.yml` are automatically mapped to config fields
+- No special syntax needed — just omit sensitive fields from config.json
+- If a field exists in both files, `.security.yml` value takes precedence
+- You can mix direct values in config.json with security values
+
+For complete documentation, see [`security_configuration.md`](security_configuration.md).
+
 #### All Supported Vendors

 | Vendor                  | `model` Prefix    | Default API Base                                    | Protocol  | API Key                                                          |
@ -515,16 +595,20 @@ This design also enables **multi-agent support** with flexible provider selectio
 }
 ```

+> **Security Note**: You can remove `api_key` fields from your config and store them in `.security.yml` instead. See [Security Configuration](#-security-configuration-recommended) above for details.
+
 #### Vendor-Specific Examples

+> **Tip**: You can omit `api_key` fields and store them in `.security.yml` for better security. See [Security Configuration](#-security-configuration-recommended).
+
 <details>
 <summary><b>OpenAI</b></summary>

 ```json
 {
  "model_name": "gpt-5.4",
-  "model": "openai/gpt-5.4",
-  "api_key": "sk-..."
+  "model": "openai/gpt-5.4"
+  // api_key: set in .security.yml
 }
 ```

@ -536,8 +620,8 @@ This design also enables **multi-agent support** with flexible provider selectio
 ```json
 {
  "model_name": "ark-code-latest",
-  "model": "volcengine/ark-code-latest",
-  "api_key": "sk-..."
+  "model": "volcengine/ark-code-latest"
+  // api_key: set in .security.yml
 }
 ```

@ -549,8 +633,8 @@ This design also enables **multi-agent support** with flexible provider selectio
 ```json
 {
  "model_name": "glm-4.7",
-  "model": "zhipu/glm-4.7",
-  "api_key": "your-key"
+  "model": "zhipu/glm-4.7"
+  // api_key: set in .security.yml
 }
 ```

@ -562,8 +646,8 @@ This design also enables **multi-agent support** with flexible provider selectio
 ```json
 {
  "model_name": "deepseek-chat",
-  "model": "deepseek/deepseek-chat",
-  "api_key": "sk-..."
+  "model": "deepseek/deepseek-chat"
+  // api_key: set in .security.yml
 }
 ```

@ -575,8 +659,8 @@ This design also enables **multi-agent support** with flexible provider selectio
 ```json
 {
  "model_name": "claude-sonnet-4.6",
-  "model": "anthropic/claude-sonnet-4.6",
-  "api_key": "sk-ant-your-key"
+  "model": "anthropic/claude-sonnet-4.6"
+  // api_key: set in .security.yml
 }
 ```

@ -616,8 +700,8 @@ For direct Anthropic API access or custom endpoints that only support Anthropic'
 {
  "model_name": "my-custom-model",
  "model": "openai/custom-model",
-  "api_base": "https://my-proxy.com/v1",
-  "api_key": "sk-..."
+  "api_base": "https://my-proxy.com/v1"
+  // api_key: set in .security.yml
 }
 ```

@ -629,6 +713,33 @@ PicoClaw strips only the outer `litellm/` prefix before sending the request, so

 Configure multiple endpoints for the same model name — PicoClaw will automatically round-robin between them:

+**Option 1: Multiple API Keys in .security.yml (Recommended)**
+
+```yaml
+# .security.yml
+model_list:
+  gpt-5.4:
+    api_keys:
+      - "sk-proj-key-1"
+      - "sk-proj-key-2"
+```
+
+```json
+// config.json
+{
+  "model_list": [
+    {
+      "model_name": "gpt-5.4",
+      "model": "openai/gpt-5.4",
+      "api_base": "https://api.openai.com/v1"
+      // api_keys loaded from .security.yml
+    }
+  ]
+}
+```
+
+**Option 2: Multiple Model Entries**
+
 ```json
 {
  "model_list": [
@ -685,6 +796,8 @@ This keeps the runtime lightweight while making new OpenAI-compatible backends m
 }
 ```

+> **Note**: The `providers` format is deprecated. Use the new `model_list` format with `.security.yml` for better security.
+
 </details>

 <details>
@ -701,18 +814,10 @@ This keeps the runtime lightweight while making new OpenAI-compatible backends m
    "dm_scope": "per-channel-peer",
    "backlog_limit": 20
  },
-  "providers": {
-    "openrouter": {
-      "api_key": "sk-or-v1-xxx"
-    },
-    "groq": {
-      "api_key": "gsk_xxx"
-    }
-  },
  "channels": {
    "telegram": {
-      "enabled": true,
-      "token": "123456:ABC...",
+      "enabled": true"
+      // token: set in .security.yml
      "allow_from": ["123456789"]
    }
  },
@ -731,6 +836,8 @@ This keeps the runtime lightweight while making new OpenAI-compatible backends m
 }
 ```

+> **Note**: Sensitive fields (`api_key`, `token`, etc.) can be omitted and stored in `.security.yml` for better security.
+
 </details>

 ### Scheduled Tasks / Reminders
@ -754,6 +861,7 @@ Scheduled tasks persist across restarts and are stored in `~/.picoclaw/workspace

 | Topic | Description |
 | ----- | ----------- |
+| [Security Configuration](security_configuration.md) | Store API keys and secrets in separate `.security.yml` file |
 | [Sensitive Data Filtering](sensitive_data_filtering.md) | Filter API keys and tokens from tool results before sending to LLM |
 | [Hook System](hooks/README.md) | Event-driven hooks: observers, interceptors, approval hooks |
 | [Steering](steering.md) | Inject messages into a running agent loop between tool calls |
--- a/docs/credential_encryption.md
+++ b/docs/credential_encryption.md
@ -31,7 +31,7 @@ enc://AAAA...base64...
    {
      "model_name": "gpt-4o",
      "model": "openai/gpt-4o",
-      "api_key": "enc://AAAA...base64...",
+      // "api_key": "enc://AAAA...base64..." move to .security.yml
      "api_base": "https://api.openai.com/v1"
    }
  ]
--- a/docs/docker.md
+++ b/docs/docker.md
@ -26,6 +26,9 @@ docker compose -f docker/docker-compose.yml --profile gateway up -d
 > [!TIP]
 > **Docker Users**: By default, the Gateway listens on `127.0.0.1` which is not accessible from the host. If you need to access the health endpoints or expose ports, set `PICOCLAW_GATEWAY_HOST=0.0.0.0` in your environment or update `config.json`.

+> [!NOTE]
+> The `gateway` profile only serves the webhook handlers (including Pico when enabled) and health endpoints on the gateway port, so it does not expose generic REST chat endpoints such as `/chat` or `/a2a`. Launcher mode adds the browser UI plus `/api/pico/token` and a `/pico/ws` proxy on the launcher port, but `/pico/ws` is also available directly on the gateway whenever the Pico channel is enabled.
+
 ```bash
 # 5. Check logs
 docker compose -f docker/docker-compose.yml logs -f picoclaw-gateway
--- a/docs/fr/chat-apps.md
+++ b/docs/fr/chat-apps.md
@ -179,7 +179,7 @@ PicoClaw prend en charge la connexion à votre compte WeChat personnel via l'API

 Lancez le flux de connexion interactif par QR code :
 ```bash
-picoclaw onboard weixin
+picoclaw auth weixin
 ```
 Scannez le QR code affiché avec votre application WeChat mobile. Une fois connecté, le token est sauvegardé dans votre configuration.

--- a/docs/ja/chat-apps.md
+++ b/docs/ja/chat-apps.md
@ -184,7 +184,7 @@ PicoClaw は Tencent iLink 公式 API を使用して WeChat 個人アカウン

 インタラクティブな QR ログインフローを実行します：
 ```bash
-picoclaw onboard weixin
+picoclaw auth weixin
 ```
 WeChat モバイルアプリで表示された QR コードをスキャンしてください。ログイン成功後、トークンが設定ファイルに保存されます。

--- a/docs/providers.md
+++ b/docs/providers.md
@ -11,6 +11,7 @@
 | ------------ | --------------------------------------- | ------------------------------------------------------------ |
 | `gemini`     | LLM (Gemini direct)                     | [aistudio.google.com](https://aistudio.google.com)           |
 | `zhipu`      | LLM (Zhipu direct)                      | [bigmodel.cn](https://bigmodel.cn)                           |
+| `zai-coding` | LLM (Z.AI Coding Plan)                | [z.ai](https://z.ai/manage-apikey/apikey-list)           |
 | `volcengine` | LLM(Volcengine direct)                  | [volcengine.com](https://www.volcengine.com/activity/codingplan?utm_campaign=PicoClaw&utm_content=PicoClaw&utm_medium=devrel&utm_source=OWO&utm_term=PicoClaw)                 |
 | `openrouter` | LLM (recommended, access to all models) | [openrouter.ai](https://openrouter.ai)                       |
 | `anthropic`  | LLM (Claude direct)                     | [console.anthropic.com](https://console.anthropic.com)       |
@ -27,6 +28,7 @@
 | `mistral`    | LLM (Mistral direct)                    | [console.mistral.ai](https://console.mistral.ai)            |
 | `longcat`    | LLM (Longcat direct)                    | [longcat.ai](https://longcat.ai)                             |
 | `modelscope` | LLM (ModelScope direct)                 | [modelscope.cn](https://modelscope.cn)                       |
+| `mimo`       | LLM (Xiaomi MiMo direct)                | [platform.xiaomimimo.com](https://platform.xiaomimimo.com)   |

 ### Model Configuration (model_list)

@ -46,6 +48,7 @@ This design also enables **multi-agent support** with flexible provider selectio
 | **OpenAI**          | `openai/`         | `https://api.openai.com/v1`                         | OpenAI    | [Get Key](https://platform.openai.com)                           |
 | **Anthropic**       | `anthropic/`      | `https://api.anthropic.com/v1`                      | Anthropic | [Get Key](https://console.anthropic.com)                         |
 | **智谱 AI (GLM)**   | `zhipu/`          | `https://open.bigmodel.cn/api/paas/v4`              | OpenAI    | [Get Key](https://open.bigmodel.cn/usercenter/proj-mgmt/apikeys) |
+| **Z.AI Coding Plan** | `openai/`         | `https://api.z.ai/api/coding/paas/v4`              | OpenAI    | [Get Key](https://z.ai/manage-apikey/apikey-list) |
 | **DeepSeek**        | `deepseek/`       | `https://api.deepseek.com/v1`                       | OpenAI    | [Get Key](https://platform.deepseek.com)                         |
 | **Google Gemini**   | `gemini/`         | `https://generativelanguage.googleapis.com/v1beta`  | OpenAI    | [Get Key](https://aistudio.google.com/api-keys)                  |
 | **Groq**            | `groq/`           | `https://api.groq.com/openai/v1`                    | OpenAI    | [Get Key](https://console.groq.com)                              |
@ -63,6 +66,7 @@ This design also enables **multi-agent support** with flexible provider selectio
 | **Vivgrid**         | `vivgrid/`        | `https://api.vivgrid.com/v1`                        | OpenAI    | [Get Key](https://vivgrid.com)                                   |
 | **LongCat**         | `longcat/`        | `https://api.longcat.chat/openai`                   | OpenAI    | [Get Key](https://longcat.chat/platform)                         |
 | **ModelScope (魔搭)**| `modelscope/`    | `https://api-inference.modelscope.cn/v1`            | OpenAI    | [Get Token](https://modelscope.cn/my/tokens)                     |
+| **Xiaomi MiMo**     | `mimo/`           | `https://api.xiaomimimo.com/v1`                     | OpenAI    | [Get Key](https://platform.xiaomimimo.com)                       |
 | **Azure OpenAI**    | `azure/`          | `https://{resource}.openai.azure.com`               | Azure     | [Get Key](https://portal.azure.com)                              |
 | **Antigravity**     | `antigravity/`    | Google Cloud                                        | Custom    | OAuth only                                                       |
 | **GitHub Copilot**  | `github-copilot/` | `localhost:4321`                                    | gRPC      | -                                                                |
@ -160,6 +164,17 @@ If `voice.model_name` is not configured, PicoClaw will continue to fall back to
 }
 ```

+**Z.AI Coding Plan (GLM)**
+> Z.AI and 智谱 AI are two brands of the same provider. For the Z.AI Coding Plan use the `openai` model key and the api base as follows, rather than the zhipu config
+```json
+{
+  "model_name": "glm-4.7",
+  "model": "openai/glm-4.7",
+  "api_key": "your-z.ai-key"
+  "api_base": "https://api.z.ai/api/coding/paas/v4"
+}
+```
+
 **DeepSeek**

 ```json
@ -236,6 +251,21 @@ For direct Anthropic API access or custom endpoints that only support Anthropic'

 PicoClaw strips only the outer `litellm/` prefix before sending the request, so proxy aliases like `litellm/lite-gpt4` send `lite-gpt4`, while `litellm/openai/gpt-4o` sends `openai/gpt-4o`.

+**Z.AI Coding Plan**
+
+If the standard Zhipu endpoint (`https://open.bigmodel.cn/api/paas/v4`) returns 429 (code 1113: insufficient balance), try using the Z.AI Coding Plan endpoint instead:
+
+```json
+{
+  "model_name": "glm-4.7",
+  "model": "openai/glm-4.7",
+  "api_key": "your-zhipu-api-key",
+  "api_base": "https://api.z.ai/api/coding/paas/v4"
+}
+```
+
+**Note:** The Z.AI Coding Plan endpoint and standard Zhipu endpoint use the same API key format but have separate billing. If you encounter 429 errors with the standard Zhipu endpoint, the Z.AI Coding Plan endpoint may have available balance.
+
 #### Load Balancing

 Configure multiple endpoints for the same model name—PicoClaw will automatically round-robin between them:
@ -259,6 +289,45 @@ Configure multiple endpoints for the same model name—PicoClaw will automatical
 }
 ```

+#### Automatic Model Failover (Cascade)
+
+PicoClaw already supports automatic failover when you configure `primary` + `fallbacks` in the agent model settings.
+The runtime fallback chain retries the next candidate for retriable failures such as HTTP `429`, quota/rate-limit errors, and timeout errors.
+It also applies cooldown tracking per candidate to avoid immediately retrying a recently failed target.
+
+```json
+{
+  "model_list": [
+    {
+      "model_name": "qwen-main",
+      "model": "openai/qwen3.5:cloud",
+      "api_base": "https://api.example.com/v1",
+      "api_key": "sk-main"
+    },
+    {
+      "model_name": "deepseek-backup",
+      "model": "deepseek/deepseek-chat",
+      "api_key": "sk-backup-1"
+    },
+    {
+      "model_name": "gemini-backup",
+      "model": "gemini/gemini-2.5-flash",
+      "api_key": "sk-backup-2"
+    }
+  ],
+  "agents": {
+    "defaults": {
+      "model": {
+        "primary": "qwen-main",
+        "fallbacks": ["deepseek-backup", "gemini-backup"]
+      }
+    }
+  }
+}
+```
+
+If you use key-level failover for the same model, PicoClaw can chain through additional key-backed candidates before moving to cross-model backups.
+
 #### Migration from Legacy `providers` Config

 The old `providers` configuration is **deprecated** but still supported for backward compatibility.
--- a/docs/pt-br/chat-apps.md
+++ b/docs/pt-br/chat-apps.md
@ -179,7 +179,7 @@ O PicoClaw suporta conexão com sua conta pessoal do WeChat usando a API oficial

 Execute o fluxo de login interativo por QR code:
 ```bash
-picoclaw onboard weixin
+picoclaw auth weixin
 ```
 Escaneie o QR code exibido com seu aplicativo WeChat mobile. Após o login bem-sucedido, o token é salvo na sua configuração.

--- a/docs/security_configuration.md
+++ b/docs/security_configuration.md
@ -0,0 +1,644 @@
+# Security Configuration
+
+## Overview
+
+PicoClaw supports separating sensitive data (API keys, tokens, secrets, passwords) from the main configuration by storing them in a `.security.yml` file. This improves security by:
+
+1. **Separation of concerns**: Configuration settings and secrets are in separate files
+2. **Easier sharing**: The main config can be shared without exposing sensitive data
+3. **Better version control**: `.security.yml` should be added to `.gitignore`
+4. **Flexible deployment**: Different environments can use different security files
+
+## File Structure
+
+```
+~/.picoclaw/
+├── config.json          # Main configuration (safe to share)
+└── .security.yml         # Security data (never share)
+```
+
+## How It Works
+
+The security configuration works through **direct field mapping**, NOT through `ref:` string references. The system automatically loads values from `.security.yml` and applies them to the corresponding fields in `config.json`.
+
+### Key Points:
+
+- Values in `.security.yml` are automatically mapped to corresponding fields in the config
+- The mapping is based on field names and structure, not on reference strings
+- If a value exists in `.security.yml`, it **overrides** the value in `config.json`
+- You can omit sensitive fields from `config.json` entirely (recommended)
+
+## Security Configuration Structure
+
+### Complete Example: .security.yml
+
+```yaml
+# Model API Keys
+# All models MUST use `api_keys` (plural) array format
+# Even a single key must be provided as an array with one element
+model_list:
+  gpt-5.4:
+    api_keys:
+      - "sk-proj-your-actual-openai-key-1"
+      - "sk-proj-your-actual-openai-key-2"  # Optional: Multiple keys for failover
+  claude-sonnet-4.6:
+    api_keys:
+      - "sk-ant-your-actual-anthropic-key"  # Single key in array format
+
+# Channel Tokens
+channels:
+  telegram:
+    token: "your-telegram-bot-token"
+  feishu:
+    app_secret: "your-feishu-app-secret"
+    encrypt_key: "your-feishu-encrypt-key"
+    verification_token: "your-feishu-verification-token"
+  discord:
+    token: "your-discord-bot-token"
+  weixin:
+    token: "your-weixin-token"
+  qq:
+    app_secret: "your-qq-app-secret"
+  dingtalk:
+    client_secret: "your-dingtalk-client-secret"
+  slack:
+    bot_token: "your-slack-bot-token"
+    app_token: "your-slack-app-token"
+  matrix:
+    access_token: "your-matrix-access-token"
+  line:
+    channel_secret: "your-line-channel-secret"
+    channel_access_token: "your-line-channel-access-token"
+  onebot:
+    access_token: "your-onebot-access-token"
+  wecom:
+    token: "your-wecom-token"
+    encoding_aes_key: "your-wecom-encoding-aes-key"
+  wecom_app:
+    corp_secret: "your-wecom-app-corp-secret"
+    token: "your-wecom-app-token"
+    encoding_aes_key: "your-wecom-app-encoding-aes-key"
+  wecom_aibot:
+    secret: "your-wecom-aibot-secret"
+    token: "your-wecom-aibot-token"
+    encoding_aes_key: "your-wecom-aibot-encoding-aes-key"
+  pico:
+    token: "your-pico-token"
+  irc:
+    password: "your-irc-password"
+    nickserv_password: "your-irc-nickserv-password"
+    sasl_password: "your-irc-sasl-password"
+
+# Web Tool API Keys
+web:
+  brave:
+    api_keys:
+      - "BSAyour-brave-api-key-1"
+      - "BSAyour-brave-api-key-2"  # Optional: Multiple keys for failover
+  tavily:
+    api_keys:
+      - "tvly-your-tavily-api-key"  # Single key in array format
+  perplexity:
+    api_keys:
+      - "pplx-your-perplexity-api-key"  # Single key in array format
+  glm_search:
+    api_key: "your-glm-search-api-key"  # GLMSearch uses single key format (not array)
+  baidu_search:
+    api_key: "your-baidu-search-api-key"
+
+# Skills Registry Tokens
+skills:
+  github:
+    token: "your-github-token"
+  clawhub:
+    auth_token: "your-clawhub-auth-token"
+```
+
+## Usage
+
+### Step 1: Create .security.yml
+
+Create or copy the security file:
+```bash
+cp security.example.yml ~/.picoclaw/.security.yml
+```
+
+### Step 2: Fill in your actual values
+
+Edit `~/.picoclaw/.security.yml` and replace placeholder values with your actual API keys and tokens.
+
+### Step 3: Set proper permissions
+
+```bash
+chmod 600 ~/.picoclaw/.security.yml
+```
+
+### Step 4: Simplify config.json (Recommended)
+
+You can now remove sensitive fields from `config.json` since they're loaded from `.security.yml`:
+
+**Before:**
+```json
+{
+  "model_list": [
+    {
+      "model_name": "gpt-5.4",
+      "model": "openai/gpt-5.4",
+      "api_base": "https://api.openai.com/v1",
+      "api_key": "sk-your-actual-api-key-here"
+    }
+  ],
+  "channels": {
+    "telegram": {
+      "enabled": true,
+      "token": "1234567890:ABCdefGHIjklMNOpqrsTUVwxyz"
+    }
+  }
+}
+```
+
+**After:**
+```json
+{
+  "model_list": [
+    {
+      "model_name": "gpt-5.4",
+      "model": "openai/gpt-5.4",
+      "api_base": "https://api.openai.com/v1"
+      // api_key is now loaded from .security.yml
+    }
+  ],
+  "channels": {
+    "telegram": {
+      "enabled": true"
+      // token is now loaded from .security.yml
+    }
+  }
+}
+```
+
+### Step 5: Verify
+
+Restart PicoClaw and verify it loads correctly:
+```bash
+picoclaw --version
+```
+
+## Field Mapping Rules
+
+### Models
+
+**In .security.yml:**
+```yaml
+model_list:
+  <model_name>:
+    api_keys:
+      - "key-1"
+      - "key-2"
+```
+
+**Mapping:**
+- Field `api_keys` (array) maps to the model's API keys
+- The `<model_name>` must match the `model_name` field in `config.json`
+- Supports indexed names (e.g., "gpt-5.4:0") - the system will also try the base name ("gpt-5.4")
+
+### Channels
+
+Each channel maps its fields directly:
+
+**In .security.yml:**
+```yaml
+channels:
+  telegram:
+    token: "value"
+  feishu:
+    app_secret: "value"
+    encrypt_key: "value"
+    verification_token: "value"
+  discord:
+    token: "value"
+```
+
+**Mapping:**
+- `channels.telegram.token` → `config.channels.telegram.token`
+- `channels.feishu.app_secret` → `config.channels.feishu.app_secret`
+- etc.
+
+### Web Tools
+
+**Brave, Tavily, Perplexity:**
+```yaml
+web:
+  brave:
+    api_keys:
+      - "key-1"
+      - "key-2"
+```
+- Use `api_keys` (plural) array format
+
+**GLMSearch:**
+```yaml
+web:
+  glm_search:
+    api_key: "single-key-here"
+```
+- Use `api_key` (singular) single string format
+
+**BaiduSearch:**
+```yaml
+web:
+  baidu_search:
+    api_key: "your-key"
+```
+- Use `api_key` (singular) single string format
+
+### Skills
+
+**In .security.yml:**
+```yaml
+skills:
+  github:
+    token: "value"
+  clawhub:
+    auth_token: "value"
+```
+
+## API Key Formats
+
+### Models - Single key
+
+Use array format with one element:
+```yaml
+model_list:
+  gpt-5.4:
+    api_keys:
+      - "sk-your-key"
+```
+
+### Models - Multiple keys (Load Balancing & Failover)
+
+Use array format with multiple elements:
+```yaml
+model_list:
+  gpt-5.4:
+    api_keys:
+      - "sk-your-key-1"
+      - "sk-your-key-2"
+      - "sk-your-key-3"
+```
+
+**Benefits:**
+- **Load balancing**: Requests are distributed across multiple keys
+- **Failover**: Automatic switching to another key if one fails
+- **Rate limit management**: Distribute usage across multiple keys
+- **High availability**: Reduce downtime during API provider issues
+
+### Web Tools (Brave/Tavily/Perplexity) - Single key
+
+```yaml
+web:
+  brave:
+    api_keys:
+      - "BSA-your-key"
+```
+
+### Web Tools (Brave/Tavily/Perplexity) - Multiple keys
+
+```yaml
+web:
+  brave:
+    api_keys:
+      - "BSA-key-1"
+      - "BSA-key-2"
+```
+
+### Web Tool (GLMSearch/BaiduSearch) - Single key only
+
+```yaml
+web:
+  glm_search:
+    api_key: "your-glm-key"  # Single string (NOT array)
+  baidu_search:
+    api_key: "your-baidu-key"  # Single string (NOT array)
+```
+
+## Model Name Matching
+
+The system supports intelligent model name matching in `.security.yml`:
+
+### Example 1: Exact Match
+
+**config.json:**
+```json
+{
+  "model_name": "gpt-5.4:0"
+}
+```
+
+**.security.yml (exact match with index):**
+```yaml
+model_list:
+  gpt-5.4:0:
+    api_keys: ["key-1"]
+```
+
+### Example 2: Base Name Match
+
+**config.json:**
+```json
+{
+  "model_name": "gpt-5.4:0"
+}
+```
+
+**.security.yml (base name without index):**
+```yaml
+model_list:
+  gpt-5.4:
+    api_keys: ["key-1", "key-2"]
+```
+
+Both methods work. The base name match allows you to use simpler keys in `.security.yml` even when your config uses indexed model names for load balancing.
+
+## Backward Compatibility
+
+The system maintains full backward compatibility:
+
+1. **Direct values**: You can still use direct values in `config.json` (not recommended for production)
+2. **Mixed usage**: You can have some fields in `.security.yml` and others in `config.json`
+3. **Optional security file**: If `.security.yml` doesn't exist, the system will only use values from `config.json`
+4. **Override behavior**: If a field exists in both files, `.security.yml` value takes precedence
+
+## Environment Variables
+
+You can override any security value using environment variables:
+
+**For models:**
+```bash
+export PICOCLAW_CHANNELS_TELEGRAM_TOKEN="token-from-env"
+```
+
+**For channels:**
+```bash
+export PICOCLAW_CHANNELS_TELEGRAM_TOKEN="token-from-env"
+export PICOCLAW_CHANNELS_FEISHU_APP_SECRET="secret-from-env"
+```
+
+**For web tools:**
+```bash
+export PICOCLAW_TOOLS_WEB_BRAVE_API_KEY="key-from-env"
+export PICOCLAW_TOOLS_WEB_BAIDU_API_KEY="baidu-key-from-env"
+```
+
+Environment variables have the highest priority and will override both `config.json` and `.security.yml` values.
+
+The pattern is: `PICOCLAW_<SECTION>_<KEY>_<FIELD>` with underscores separating path segments and converted to uppercase.
+
+## Security Best Practices
+
+1. **Never commit `.security.yml`** to version control
+2. **Add to .gitignore**: Ensure `.security.yml` is in your `.gitignore` file
+3. **Set file permissions**: `chmod 600 ~/.picoclaw/.security.yml`
+4. **Use different keys** for different environments (dev, staging, production)
+5. **Rotate keys regularly** and update `.security.yml`
+6. **Backup securely**: Encrypt backups containing `.security.yml`
+7. **Review access**: Ensure only authorized users have read access to the file
+
+## API
+
+### loadSecurityConfig
+
+```go
+func loadSecurityConfig(securityPath string) (*SecurityConfig, error)
+```
+
+Loads the security configuration from `.security.yml`. Returns an empty `SecurityConfig` if the file doesn't exist.
+
+### saveSecurityConfig
+
+```go
+func saveSecurityConfig(securityPath string, sec *SecurityConfig) error
+```
+
+Saves the security configuration to `.security.yml` with `0o600` permissions.
+
+### applySecurityConfig
+
+```go
+func applySecurityConfig(cfg *Config, sec *SecurityConfig) error
+```
+
+Applies security configuration to the main config by copying values from `.security.yml` to the corresponding fields in the config.
+
+### securityPath
+
+```go
+func securityPath(configPath string) string
+```
+
+Returns the path to `.security.yml` relative to the config file.
+
+## Example: Complete Configuration
+
+### config.json
+
+```json
+{
+  "version": 1,
+  "agents": {
+    "defaults": {
+      "workspace": "~/picoclaw-workspace",
+      "model_name": "gpt-5.4"
+    }
+  },
+  "model_list": [
+    {
+      "model_name": "gpt-5.4",
+      "model": "openai/gpt-5.4",
+      "api_base": "https://api.openai.com/v1"
+    },
+    {
+      "model_name": "claude-sonnet-4.6",
+      "model": "anthropic/claude-sonnet-4.6",
+      "api_base": "https://api.anthropic.com/v1"
+    }
+  ],
+  "channels": {
+    "telegram": {
+      "enabled": true
+    }
+  },
+  "tools": {
+    "web": {
+      "brave": {
+        "enabled": true
+      }
+    }
+  }
+}
+```
+
+### .security.yml
+
+```yaml
+model_list:
+  gpt-5.4:
+    api_keys:
+      - "sk-proj-actual-openai-key-1"
+      - "sk-proj-actual-openai-key-2"
+  claude-sonnet-4.6:
+    api_keys:
+      - "sk-ant-actual-anthropic-key"
+
+channels:
+  telegram:
+    token: "1234567890:ABCdefGHIjklMNOpqrsTUVwxyz"
+
+web:
+  brave:
+    api_keys:
+      - "BSAactualbravekey-1"
+      - "BSAactualbravekey-2"
+  tavily:
+    api_keys:
+      - "tvly-your-tavily-key"
+  glm_search:
+    api_key: "your-glm-key"
+  baidu_search:
+    api_key: "your-baidu-key"
+```
+
+## Testing
+
+Run the security configuration tests:
+
+```bash
+go test ./pkg/config -run TestSecurityConfig
+```
+
+## Troubleshooting
+
+### Error: "failed to load security config"
+
+- Verify `.security.yml` exists in the same directory as `config.json`
+- Check the YAML syntax is valid (use a YAML validator)
+- Ensure file permissions allow reading
+
+### Error: "model security entry not found"
+
+- Ensure the model name in `config.json` matches exactly in `.security.yml`
+- Check that the `model_list` section exists in `.security.yml`
+- For models with indexed names (e.g., "gpt-5.4:0"), ensure the exact name is used or check the base name without index
+- Verify the YAML structure is correct (proper indentation)
+
+### Multiple API Keys Not Working
+
+- Ensure you're using `api_keys` (plural) in `.security.yml` for models and web tools (except GLMSearch/BaiduSearch)
+- Check that the array format is correct in YAML (proper indentation with dashes)
+- Remember: Models, Brave, Tavily, Perplexity MUST use `api_keys` (array format)
+- GLMSearch and BaiduSearch MUST use `api_key` (single string format)
+
+### Load Balancing/Failover Issues
+
+- Verify all API keys in the `api_keys` array are valid
+- Check that all keys have the same rate limits and permissions
+- Monitor logs to see which keys are being used and failing
+- Ensure the `api_keys` array is properly formatted in YAML
+
+### Keys Not Being Applied
+
+- Check that `.security.yml` is in the same directory as `config.json`
+- Verify the file permissions allow reading (`chmod 600 ~/.picoclaw/.security.yml`)
+- Ensure the YAML structure matches the expected format
+- Check for typos in field names (case-sensitive)
+- Verify the model/channel names match exactly (case-sensitive)
+
+## Migration Guide
+
+### Step 1: Backup your config
+
+```bash
+cp ~/.picoclaw/config.json ~/.picoclaw/config.json.backup
+```
+
+### Step 2: Create .security.yml
+
+```bash
+cp security.example.yml ~/.picoclaw/.security.yml
+```
+
+### Step 3: Fill in your API keys
+
+Edit `~/.picoclaw/.security.yml` and replace placeholder values with your actual keys.
+
+### Step 4: Remove sensitive fields from config.json
+
+Remove or comment out sensitive fields from `config.json`:
+- `api_key` fields from `model_list` entries
+- `token` fields from `channels`
+- `api_key` fields from `tools.web`
+- `token`/`auth_token` fields from `tools.skills`
+
+### Step 5: Set proper permissions
+
+```bash
+chmod 600 ~/.picoclaw/.security.yml
+```
+
+### Step 6: Test
+
+```bash
+picoclaw --version
+```
+
+### Step 7: Verify functionality
+
+Test your models and channels to ensure everything works correctly.
+
+### Step 8: Clean up (optional)
+
+If everything works, you can delete the backup:
+```bash
+rm ~/.picoclaw/config.json.backup
+```
+
+## Advanced: Encrypted API Keys
+
+PicoClaw supports encrypting API keys in the security file for additional protection.
+
+### Setup
+
+1. Set a passphrase via environment variable:
+```bash
+export PICOCLAW_CREDENTIAL_PASSPHRASE="your-secure-passphrase"
+```
+
+2. When saving config, API keys will be encrypted automatically:
+```go
+SaveConfig(path, config)
+```
+
+### Encrypted Format
+
+Encrypted keys are stored as:
+```yaml
+model_list:
+  gpt-5.4:
+    api_keys:
+      - "enc://encrypted-base64-string"
+```
+
+The system automatically decrypts keys at runtime when loading the configuration.
+
+### Benefits
+
+- Additional layer of security
+- Keys are encrypted at rest
+- Passphrase can be managed separately from the config file
+
+### Important Notes
+
+- Always backup your passphrase securely
+- If you lose the passphrase, you'll lose access to encrypted keys
+- Use a strong, unique passphrase
+- Never commit the passphrase to version control
--- a/docs/tools_configuration.md
+++ b/docs/tools_configuration.md
@ -70,12 +70,12 @@ General settings for fetching and processing webpage content.

 Baidu Search uses the [Qianfan AI Search API](https://cloud.baidu.com/doc/qianfan-api/s/Wmbq4z7e5), which is AI-powered and optimized for Chinese-language queries.

-| Config        | Type   | Default                                                          | Description               |
-|---------------|--------|------------------------------------------------------------------|---------------------------|
-| `enabled`     | bool   | false                                                            | Enable Baidu Search       |
-| `api_key`     | string | -                                                                | Qianfan API key           |
-| `base_url`    | string | `https://qianfan.baidubce.com/v2/ai_search/web_search`          | Baidu Search API URL      |
-| `max_results` | int    | 10                                                               | Maximum number of results |
+| Config        | Type   | Default                                                | Description               |
+|---------------|--------|--------------------------------------------------------|---------------------------|
+| `enabled`     | bool   | false                                                  | Enable Baidu Search       |
+| `api_key`     | string | -                                                      | Qianfan API key           |
+| `base_url`    | string | `https://qianfan.baidubce.com/v2/ai_search/web_search` | Baidu Search API URL      |
+| `max_results` | int    | 5                                                      | Maximum number of results |

 ```json
 {
@ -107,25 +107,25 @@ Baidu Search uses the [Qianfan AI Search API](https://cloud.baidu.com/doc/qianfa
 | `enabled`     | bool   | false   | Enable Tavily search      |
 | `api_key`     | string | -       | Tavily API key            |
 | `base_url`    | string | -       | Custom Tavily API base URL |
-| `max_results` | int    | 0       | Maximum number of results (0 = default) |
+| `max_results` | int    | 5       | Maximum number of results |

 ### SearXNG

-| Config        | Type   | Default                  | Description               |
-|---------------|--------|--------------------------|---------------------------|
-| `enabled`     | bool   | false                    | Enable SearXNG search     |
-| `base_url`    | string | `http://localhost:8888`  | SearXNG instance URL      |
-| `max_results` | int    | 5                        | Maximum number of results |
+| Config        | Type   | Default                 | Description               |
+|---------------|--------|-------------------------|---------------------------|
+| `enabled`     | bool   | false                   | Enable SearXNG search     |
+| `base_url`    | string | `http://localhost:8888` | SearXNG instance URL      |
+| `max_results` | int    | 5                       | Maximum number of results |

 ### GLM Search

-| Config          | Type   | Default                                              | Description               |
-|-----------------|--------|------------------------------------------------------|---------------------------|
-| `enabled`       | bool   | false                                                | Enable GLM Search         |
-| `api_key`       | string | -                                                    | GLM API key               |
-| `base_url`      | string | `https://open.bigmodel.cn/api/paas/v4/web_search`   | GLM Search API URL        |
-| `search_engine` | string | `search_std`                                         | Search engine type        |
-| `max_results`   | int    | 5                                                    | Maximum number of results |
+| Config          | Type   | Default                                           | Description               |
+|-----------------|--------|---------------------------------------------------|---------------------------|
+| `enabled`       | bool   | false                                             | Enable GLM Search         |
+| `api_key`       | string | -                                                 | GLM API key               |
+| `base_url`      | string | `https://open.bigmodel.cn/api/paas/v4/web_search` | GLM Search API URL        |
+| `search_engine` | string | `search_std`                                      | Search engine type        |
+| `max_results`   | int    | 5                                                 | Maximum number of results |

 ### Additional Web Settings

@ -134,6 +134,28 @@ Baidu Search uses the [Qianfan AI Search API](https://cloud.baidu.com/doc/qianfa
 | `prefer_native`          | bool     | true    | Prefer provider's native search over configured search engines |
 | `private_host_whitelist` | string[] | `[]`    | Private/internal hosts allowed for web fetching                |

+### `web_search` Tool Parameters
+
+At runtime, the `web_search` tool accepts the following parameters:
+
+| Field | Type | Required | Description |
+|-------|------|----------|-------------|
+| `query` | string | yes | Search query string |
+| `count` | integer | no | Number of results to return. Default: `10`, max: `10` |
+| `range` | string | no | Optional time filter: `d` (day), `w` (week), `m` (month), `y` (year) |
+
+If `range` is omitted, PicoClaw performs an unrestricted search.
+
+### Example `web_search` Call
+
+```json
+{
+  "query": "ai agent news",
+  "count": 10,
+  "range": "w"
+}
+```
+
 ## Exec Tool

 The exec tool is used to execute shell commands.
--- a/docs/vi/chat-apps.md
+++ b/docs/vi/chat-apps.md
@ -179,7 +179,7 @@ PicoClaw hỗ trợ kết nối với tài khoản WeChat cá nhân của bạn

 Chạy luồng đăng nhập QR tương tác:
 ```bash
-picoclaw onboard weixin
+picoclaw auth weixin
 ```
 Quét mã QR được in ra bằng ứng dụng WeChat trên điện thoại. Sau khi đăng nhập thành công, token sẽ được lưu vào cấu hình.

--- a/docs/zh/chat-apps.md
+++ b/docs/zh/chat-apps.md
@ -6,7 +6,7 @@

 PicoClaw 支持多种聊天平台，使您的 Agent 能够连接到任何地方。

-> **注意**: 所有 Webhook 类渠道（LINE、WeCom 等）均挂载在同一个 Gateway HTTP 服务器上（`gateway.host`:`gateway.port`，默认 `127.0.0.1:18790`），无需为每个渠道单独配置端口。注意：飞书（Feishu）使用 WebSocket/SDK 模式，不通过该共享 HTTP webhook 服务器接收消息。
+> **注意**: 依赖 HTTP 回调的渠道共用同一个 Gateway HTTP 服务器（`gateway.host`:`gateway.port`，默认 `127.0.0.1:18790`），无需为每个渠道单独配置端口。飞书、钉钉、企业微信这类 Socket/Stream 模式渠道不依赖共享 webhook 服务器来接收入站消息。

 ### 核心渠道

@ -21,7 +21,7 @@ PicoClaw 支持多种聊天平台，使您的 Agent 能够连接到任何地方
 | **QQ**               | ⭐⭐ 中等   | 官方机器人 API，适合国内社群              | [查看文档](../channels/qq/README.zh.md)                                                                       |
 | **钉钉 (DingTalk)**  | ⭐⭐ 中等   | Stream 模式无需公网，企业办公首选         | [查看文档](../channels/dingtalk/README.zh.md)                                                                 |
 | **LINE**             | ⭐⭐⭐ 较难 | 需要 HTTPS Webhook                        | [查看文档](../channels/line/README.zh.md)                                                                     |
-| **企业微信 (WeCom)** | ⭐⭐⭐ 较难 | 支持群机器人(Webhook)、自建应用(API)和智能机器人(AI Bot) | [Bot 文档](../channels/wecom/wecom_bot/README.zh.md) / [App 文档](../channels/wecom/wecom_app/README.zh.md) / [AI Bot 文档](../channels/wecom/wecom_aibot/README.zh.md) |
+| **企业微信 (WeCom)** | ⭐⭐⭐ 较难 | 官方 AI Bot WebSocket 接入，支持流式回复和媒体消息 | [查看文档](../channels/wecom/README.zh.md) |
 | **飞书 (Feishu)**    | ⭐⭐⭐ 较难 | 企业级协作，功能丰富                      | [查看文档](../channels/feishu/README.zh.md)                                                                   |
 | **IRC**              | ⭐⭐ 中等   | 服务器 + TLS 配置                         | [查看文档](#irc) |
 | **OneBot**           | ⭐⭐ 中等   | 兼容 NapCat/Go-CQHTTP，社区生态丰富       | [查看文档](../channels/onebot/README.zh.md)                                                                   |
@ -191,7 +191,7 @@ PicoClaw 通过腾讯 iLink 官方 API 支持连接微信个人号。

 运行交互式扫码登录流程：
 ```bash
-picoclaw onboard weixin
+picoclaw auth weixin
 ```
 用微信手机端扫描打印出的二维码。登录成功后，token 会自动保存到配置文件。

@ -492,102 +492,34 @@ picoclaw gateway
 <details>
 <summary><b>企业微信 (WeCom)</b></summary>

-PicoClaw 支持三种企业微信集成方式：
+PicoClaw 现在将企业微信统一为一个基于 WebSocket 的 AI Bot 渠道。
+它不再需要公网 webhook 回调地址。

-**方式 1: 群机器人 (Bot)** — 设置简单，支持群聊
-**方式 2: 自建应用 (App)** — 功能更多，支持主动推送，仅私聊
-**方式 3: 智能机器人 (AI Bot)** — 官方 AI Bot，流式回复，支持群聊和私聊
+完整配置说明和迁移说明请参考 [企业微信配置指南](../channels/wecom/README.zh.md)。

-详细设置请参考 [企业微信 AI Bot 配置指南](../channels/wecom/wecom_aibot/README.zh.md)。
+**推荐快速接入**

-**快速设置 — 群机器人：**
+**1. 认证**

-**1. 创建 Bot**
+```bash
+picoclaw auth wecom
+```

-* 企业微信管理后台 → 群聊 → 添加群机器人
-* 复制 Webhook URL（格式：`https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=xxx`）
+该命令会显示二维码，等待你在企业微信里确认，然后把 `bot_id` 和 `secret` 写入 `channels.wecom`。

-**2. 配置**
+**2. 如需手动配置**

 ```json
 {
  "channels": {
    "wecom": {
      "enabled": true,
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_ENCODING_AES_KEY",
-      "webhook_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=YOUR_KEY",
-      "webhook_path": "/webhook/wecom",
-      "allow_from": []
-    }
-  }
-}
-```
-
-> WeCom Webhook 挂载在共享 Gateway 服务器上（`gateway.host`:`gateway.port`，默认 `127.0.0.1:18790`）。
-
-**快速设置 — 自建应用：**
-
-**1. 创建应用**
-
-* 企业微信管理后台 → 应用管理 → 创建应用
-* 复制 **AgentId** 和 **Secret**
-* 前往"我的企业"页面，复制 **CorpID**
-
-**2. 配置接收消息**
-
-* 在应用详情中，点击"接收消息" → "设置 API"
-* 设置 URL 为 `http://your-server:18790/webhook/wecom-app`
-* 生成 **Token** 和 **EncodingAESKey**
-
-**3. 配置**
-
-```json
-{
-  "channels": {
-    "wecom_app": {
-      "enabled": true,
-      "corp_id": "wwxxxxxxxxxxxxxxxx",
-      "corp_secret": "YOUR_CORP_SECRET",
-      "agent_id": 1000002,
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_ENCODING_AES_KEY",
-      "webhook_path": "/webhook/wecom-app",
-      "allow_from": []
-    }
-  }
-}
-```
-
-**4. 运行**
-
-```bash
-picoclaw gateway
-```
-
-> **注意**: WeCom Webhook 回调挂载在 Gateway 端口（默认 18790）。使用反向代理配置 HTTPS。
-
-**快速设置 — 智能机器人 (AI Bot)：**
-
-**1. 创建 AI Bot**
-
-* 企业微信管理后台 → 应用管理 → AI Bot
-* 在 AI Bot 设置中配置回调 URL：`http://your-server:18790/webhook/wecom-aibot`
-* 复制 **Token** 并点击"随机生成" **EncodingAESKey**
-
-**2. 配置**
-
-```json
-{
-  "channels": {
-    "wecom_aibot": {
-      "enabled": true,
-      "token": "YOUR_TOKEN",
-      "encoding_aes_key": "YOUR_43_CHAR_ENCODING_AES_KEY",
-      "webhook_path": "/webhook/wecom-aibot",
+      "bot_id": "YOUR_BOT_ID",
+      "secret": "YOUR_SECRET",
+      "websocket_url": "wss://openws.work.weixin.qq.com",
+      "send_thinking_message": true,
      "allow_from": [],
-      "welcome_message": "你好！有什么可以帮你的？",
-      "processing_message": "⏳ Processing, please wait. The results will be sent shortly."
+      "reasoning_channel_id": ""
    }
  }
 }
@ -599,7 +531,7 @@ picoclaw gateway
 picoclaw gateway
 ```

-> **注意**: 企业微信 AI Bot 使用流式拉取协议，无回复超时问题。长任务（>30 秒）会自动切换到 `response_url` 推送投递。
+> 这个分支中旧的 `wecom_app` 和 `wecom_aibot` 配置已经被统一的 `channels.wecom` 替代。

 </details>

--- a/docs/zh/providers.md
+++ b/docs/zh/providers.md
@ -26,6 +26,7 @@
 | `mistral`            | LLM (Mistral 直连)           | [console.mistral.ai](https://console.mistral.ai)                    |
 | `longcat`            | LLM (Longcat 直连)           | [longcat.ai](https://longcat.ai)                                     |
 | `modelscope`         | LLM (ModelScope 直连)        | [modelscope.cn](https://modelscope.cn)                               |
+| `mimo`               | LLM (小米 MiMo 直连)         | [platform.xiaomimimo.com](https://platform.xiaomimimo.com)           |

 ### 模型配置 (model_list)

@ -62,6 +63,7 @@
 | **Vivgrid**         | `vivgrid/`        | `https://api.vivgrid.com/v1`                        | OpenAI    | [获取密钥](https://vivgrid.com)                                   |
 | **LongCat**         | `longcat/`        | `https://api.longcat.chat/openai`                   | OpenAI    | [获取密钥](https://longcat.chat/platform)                         |
 | **ModelScope (魔搭)**| `modelscope/`    | `https://api-inference.modelscope.cn/v1`            | OpenAI    | [获取 Token](https://modelscope.cn/my/tokens)                    |
+| **小米 MiMo**       | `mimo/`           | `https://api.xiaomimimo.com/v1`                     | OpenAI    | [获取密钥](https://platform.xiaomimimo.com)                      |
 | **Antigravity**     | `antigravity/`    | Google Cloud                                        | 自定义    | 仅 OAuth                                                          |
 | **GitHub Copilot**  | `github-copilot/` | `localhost:4321`                                    | gRPC      | -                                                                 |

@ -257,6 +259,45 @@ PicoClaw 在发送请求前仅去除外层 `litellm/` 前缀，因此 `litellm/l
 }
 ```

+#### 自动模型失败切换（Cascade）
+
+当你在 Agent 的模型设置里配置 `primary` + `fallbacks` 时，PicoClaw 已经支持自动失败切换。
+运行时 fallback 链会在可重试错误时切到下一个候选（例如 HTTP `429`、配额/限流错误、超时错误）。
+同时会对每个候选应用 cooldown，避免对刚失败的目标立即重试。
+
+```json
+{
+  "model_list": [
+    {
+      "model_name": "qwen-main",
+      "model": "openai/qwen3.5:cloud",
+      "api_base": "https://api.example.com/v1",
+      "api_key": "sk-main"
+    },
+    {
+      "model_name": "deepseek-backup",
+      "model": "deepseek/deepseek-chat",
+      "api_key": "sk-backup-1"
+    },
+    {
+      "model_name": "gemini-backup",
+      "model": "gemini/gemini-2.5-flash",
+      "api_key": "sk-backup-2"
+    }
+  ],
+  "agents": {
+    "defaults": {
+      "model": {
+        "primary": "qwen-main",
+        "fallbacks": ["deepseek-backup", "gemini-backup"]
+      }
+    }
+  }
+}
+```
+
+如果你在同一模型上启用了 key 级失败切换，PicoClaw 会先在该模型的多 key 候选间切换，再继续切到跨模型备选。
+
 #### 从旧的 `providers` 配置迁移

 旧的 `providers` 配置格式**已弃用**，但为向后兼容仍支持。
--- a/go.mod
+++ b/go.mod
@ -12,6 +12,7 @@ require (
 	github.com/aws/aws-sdk-go-v2/service/bedrockruntime v1.50.2
 	github.com/bwmarrin/discordgo v0.29.0
 	github.com/caarlos0/env/v11 v11.4.0
+	github.com/creack/pty v1.1.24
 	github.com/ergochat/irc-go v0.6.0
 	github.com/ergochat/readline v0.1.3
 	github.com/gdamore/tcell/v2 v2.13.8
@ -31,6 +32,7 @@ require (
 	github.com/spf13/cobra v1.10.2
 	github.com/stretchr/testify v1.11.1
 	github.com/tencent-connect/botgo v0.2.1
+	go.mau.fi/util v0.9.7
 	go.mau.fi/whatsmeow v0.0.0-20260219150138-7ae702b1eed4
 	golang.org/x/oauth2 v0.36.0
 	golang.org/x/term v0.41.0
@ -39,6 +41,7 @@ require (
 	gopkg.in/yaml.v3 v3.0.1
 	maunium.net/go/mautrix v0.26.4
 	modernc.org/sqlite v1.46.1
+	rsc.io/qr v0.2.0
 )

 require (
@ -67,6 +70,7 @@ require (
 	github.com/lucasb-eyer/go-colorful v1.3.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-sqlite3 v1.14.34 // indirect
 	github.com/ncruces/go-strftime v1.0.0 // indirect
 	github.com/petermattis/goid v0.0.0-20260226131333-17d1149c6ac6 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
@ -77,13 +81,11 @@ require (
 	github.com/spf13/pflag v1.0.10 // indirect
 	github.com/vektah/gqlparser/v2 v2.5.27 // indirect
 	go.mau.fi/libsignal v0.2.1 // indirect
-	go.mau.fi/util v0.9.7 // indirect
 	golang.org/x/exp v0.0.0-20260312153236-7ab1446f8b90 // indirect
 	golang.org/x/text v0.35.0 // indirect
 	modernc.org/libc v1.67.6 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
-	rsc.io/qr v0.2.0 // indirect
 )

 require (
--- a/go.sum
+++ b/go.sum
@ -70,6 +70,8 @@ github.com/coder/websocket v1.8.14/go.mod h1:NX3SzP+inril6yawo5CQXx8+fk145lPDC6p
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/creack/pty v1.1.24 h1:bJrF4RRfyJnbTJqzRLHzcGaZK1NeM5kTC9jGgovnR1s=
+github.com/creack/pty v1.1.24/go.mod h1:08sCNb52WyoAwi2QDyzUCTgcvVFhUzewun7wtTfvcwE=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
--- a/pkg/agent/context.go
+++ b/pkg/agent/context.go
@ -26,6 +26,7 @@ type ContextBuilder struct {
 	memory             *MemoryStore
 	toolDiscoveryBM25  bool
 	toolDiscoveryRegex bool
+	splitOnMarker      bool

 	// Cache for system prompt to avoid rebuilding on every call.
 	// This fixes issue #607: repeated reprocessing of the entire context.
@ -52,6 +53,11 @@ func (cb *ContextBuilder) WithToolDiscovery(useBM25, useRegex bool) *ContextBuil
 	return cb
 }

+func (cb *ContextBuilder) WithSplitOnMarker(enabled bool) *ContextBuilder {
+	cb.splitOnMarker = enabled
+	return cb
+}
+
 func getGlobalConfigDir() string {
 	if home := os.Getenv(config.EnvHome); home != "" {
 		return home
@ -157,6 +163,14 @@ The following skills extend your capabilities. To use a skill, read its SKILL.md
 		parts = append(parts, "# Memory\n\n"+memoryContext)
 	}

+	// Multi-Message Sending (if enabled)
+	if cb.splitOnMarker {
+		parts = append(parts, `# MULTI-MESSAGE OUTPUT
+You MUST frequently use <|[SPLIT]|> to break your responses into multiple short messages. NEVER output a single long wall of text. Actively split distinct concepts or parts. Example: Message part 1<|[SPLIT]|>Message part 2<|[SPLIT]|>Message part 3
+
+Each part separated by the marker will be sent as an independent message.`)
+	}
+
 	// Join with "---" separator
 	return strings.Join(parts, "\n\n---\n\n")
 }
--- a/pkg/agent/instance.go
+++ b/pkg/agent/instance.go
@ -103,10 +103,12 @@ func NewAgentInstance(
 	sessions := initSessionStore(sessionsDir)

 	mcpDiscoveryActive := cfg.Tools.MCP.Enabled && cfg.Tools.MCP.Discovery.Enabled
-	contextBuilder := NewContextBuilder(workspace).WithToolDiscovery(
-		mcpDiscoveryActive && cfg.Tools.MCP.Discovery.UseBM25,
-		mcpDiscoveryActive && cfg.Tools.MCP.Discovery.UseRegex,
-	)
+	contextBuilder := NewContextBuilder(workspace).
+		WithToolDiscovery(
+			mcpDiscoveryActive && cfg.Tools.MCP.Discovery.UseBM25,
+			mcpDiscoveryActive && cfg.Tools.MCP.Discovery.UseRegex,
+		).
+		WithSplitOnMarker(cfg.Agents.Defaults.SplitOnMarker)

 	agentID := routing.DefaultAgentID
 	agentName := ""
--- a/pkg/agent/instance_test.go
+++ b/pkg/agent/instance_test.go
@ -236,8 +236,9 @@ func TestNewAgentInstance_AllowsMediaTempDirForReadListAndExec(t *testing.T) {
 		t.Fatal("exec tool not registered")
 	}
 	execResult := execTool.Execute(context.Background(), map[string]any{
-		"command":     "cat " + filepath.Base(mediaPath),
-		"working_dir": mediaDir,
+		"action":  "run",
+		"command": "cat " + filepath.Base(mediaPath),
+		"cwd":     mediaDir,
 	})
 	if execResult.IsError {
 		t.Fatalf("exec should allow media temp dir, got: %s", execResult.ForLLM)
--- a/pkg/agent/loop.go
+++ b/pkg/agent/loop.go
@ -85,6 +85,7 @@ type processOptions struct {
 	DefaultResponse         string              // Response when LLM returns empty
 	EnableSummary           bool                // Whether to trigger summarization
 	SendResponse            bool                // Whether to send response via bus
+	SuppressToolFeedback    bool                // Whether to suppress inline tool feedback messages
 	NoHistory               bool                // If true, don't load session history (for heartbeat)
 	SkipInitialSteeringPoll bool                // If true, skip the steering poll at loop start (used by Continue)
 }
@ -96,14 +97,15 @@ type continuationTarget struct {
 }

 const (
-	defaultResponse           = "The model returned an empty response. This may indicate a provider error or token limit."
-	toolLimitResponse         = "I've reached `max_tool_iterations` without a final response. Increase `max_tool_iterations` in config.json if this task needs more tool steps."
-	sessionKeyAgentPrefix     = "agent:"
-	metadataKeyAccountID      = "account_id"
-	metadataKeyGuildID        = "guild_id"
-	metadataKeyTeamID         = "team_id"
-	metadataKeyParentPeerKind = "parent_peer_kind"
-	metadataKeyParentPeerID   = "parent_peer_id"
+	defaultResponse            = "The model returned an empty response. This may indicate a provider error or token limit."
+	toolLimitResponse          = "I've reached `max_tool_iterations` without a final response. Increase `max_tool_iterations` in config.json if this task needs more tool steps."
+	handledToolResponseSummary = "Requested output delivered via tool attachment."
+	sessionKeyAgentPrefix      = "agent:"
+	metadataKeyAccountID       = "account_id"
+	metadataKeyGuildID         = "guild_id"
+	metadataKeyTeamID          = "team_id"
+	metadataKeyParentPeerKind  = "parent_peer_kind"
+	metadataKeyParentPeerID    = "parent_peer_id"
 )

 func NewAgentLoop(
@ -163,33 +165,27 @@ func registerSharedTools(

 		if cfg.Tools.IsToolEnabled("web") {
 			searchTool, err := tools.NewWebSearchTool(tools.WebSearchToolOptions{
-				BraveAPIKeys:    config.MergeAPIKeys(cfg.Tools.Web.Brave.APIKey(), cfg.Tools.Web.Brave.APIKeys()),
-				BraveMaxResults: cfg.Tools.Web.Brave.MaxResults,
-				BraveEnabled:    cfg.Tools.Web.Brave.Enabled,
-				TavilyAPIKeys: config.MergeAPIKeys(
-					cfg.Tools.Web.Tavily.APIKey(),
-					cfg.Tools.Web.Tavily.APIKeys(),
-				),
-				TavilyBaseURL:        cfg.Tools.Web.Tavily.BaseURL,
-				TavilyMaxResults:     cfg.Tools.Web.Tavily.MaxResults,
-				TavilyEnabled:        cfg.Tools.Web.Tavily.Enabled,
-				DuckDuckGoMaxResults: cfg.Tools.Web.DuckDuckGo.MaxResults,
-				DuckDuckGoEnabled:    cfg.Tools.Web.DuckDuckGo.Enabled,
-				PerplexityAPIKeys: config.MergeAPIKeys(
-					cfg.Tools.Web.Perplexity.APIKey(),
-					cfg.Tools.Web.Perplexity.APIKeys(),
-				),
+				BraveAPIKeys:          cfg.Tools.Web.Brave.APIKeys.Values(),
+				BraveMaxResults:       cfg.Tools.Web.Brave.MaxResults,
+				BraveEnabled:          cfg.Tools.Web.Brave.Enabled,
+				TavilyAPIKeys:         cfg.Tools.Web.Tavily.APIKeys.Values(),
+				TavilyBaseURL:         cfg.Tools.Web.Tavily.BaseURL,
+				TavilyMaxResults:      cfg.Tools.Web.Tavily.MaxResults,
+				TavilyEnabled:         cfg.Tools.Web.Tavily.Enabled,
+				DuckDuckGoMaxResults:  cfg.Tools.Web.DuckDuckGo.MaxResults,
+				DuckDuckGoEnabled:     cfg.Tools.Web.DuckDuckGo.Enabled,
+				PerplexityAPIKeys:     cfg.Tools.Web.Perplexity.APIKeys.Values(),
 				PerplexityMaxResults:  cfg.Tools.Web.Perplexity.MaxResults,
 				PerplexityEnabled:     cfg.Tools.Web.Perplexity.Enabled,
 				SearXNGBaseURL:        cfg.Tools.Web.SearXNG.BaseURL,
 				SearXNGMaxResults:     cfg.Tools.Web.SearXNG.MaxResults,
 				SearXNGEnabled:        cfg.Tools.Web.SearXNG.Enabled,
-				GLMSearchAPIKey:       cfg.Tools.Web.GLMSearch.APIKey(),
+				GLMSearchAPIKey:       cfg.Tools.Web.GLMSearch.APIKey.String(),
 				GLMSearchBaseURL:      cfg.Tools.Web.GLMSearch.BaseURL,
 				GLMSearchEngine:       cfg.Tools.Web.GLMSearch.SearchEngine,
 				GLMSearchMaxResults:   cfg.Tools.Web.GLMSearch.MaxResults,
 				GLMSearchEnabled:      cfg.Tools.Web.GLMSearch.Enabled,
-				BaiduSearchAPIKey:     cfg.Tools.Web.BaiduSearch.APIKey(),
+				BaiduSearchAPIKey:     cfg.Tools.Web.BaiduSearch.APIKey.String(),
 				BaiduSearchBaseURL:    cfg.Tools.Web.BaiduSearch.BaseURL,
 				BaiduSearchMaxResults: cfg.Tools.Web.BaiduSearch.MaxResults,
 				BaiduSearchEnabled:    cfg.Tools.Web.BaiduSearch.Enabled,
@ -261,7 +257,7 @@ func registerSharedTools(
 				ClawHub: skills.ClawHubConfig{
 					Enabled:         clawHubConfig.Enabled,
 					BaseURL:         clawHubConfig.BaseURL,
-					AuthToken:       clawHubConfig.AuthToken(),
+					AuthToken:       clawHubConfig.AuthToken.String(),
 					SearchPath:      clawHubConfig.SearchPath,
 					SkillsPath:      clawHubConfig.SkillsPath,
 					DownloadPath:    clawHubConfig.DownloadPath,
@ -1030,13 +1026,13 @@ func (al *AgentLoop) GetConfig() *config.Config {
 func (al *AgentLoop) SetMediaStore(s media.MediaStore) {
 	al.mediaStore = s

-	// Propagate store to send_file tools in all agents.
+	// Propagate store to all registered tools that can emit media.
 	registry := al.GetRegistry()
-	registry.ForEachTool("send_file", func(t tools.Tool) {
-		if sf, ok := t.(*tools.SendFileTool); ok {
-			sf.SetMediaStore(s)
+	for _, agentID := range registry.ListAgentIDs() {
+		if agent, ok := registry.GetAgent(agentID); ok {
+			agent.Tools.SetMediaStore(s)
 		}
-	})
+	}
 }

 // SetTranscriber injects a voice transcriber for agent-level audio transcription.
@ -1241,14 +1237,15 @@ func (al *AgentLoop) ProcessHeartbeat(
 		return "", fmt.Errorf("no default agent for heartbeat")
 	}
 	return al.runAgentLoop(ctx, agent, processOptions{
-		SessionKey:      "heartbeat",
-		Channel:         channel,
-		ChatID:          chatID,
-		UserMessage:     content,
-		DefaultResponse: defaultResponse,
-		EnableSummary:   false,
-		SendResponse:    false,
-		NoHistory:       true, // Don't load session history for heartbeat
+		SessionKey:           "heartbeat",
+		Channel:              channel,
+		ChatID:               chatID,
+		UserMessage:          content,
+		DefaultResponse:      defaultResponse,
+		EnableSummary:        false,
+		SendResponse:         false,
+		SuppressToolFeedback: true,
+		NoHistory:            true, // Don't load session history for heartbeat
 	})
 }

@ -1946,6 +1943,7 @@ turnLoop:

 			isContextError := !isTimeoutError && (strings.Contains(errMsg, "context_length_exceeded") ||
 				strings.Contains(errMsg, "context window") ||
+				strings.Contains(errMsg, "context_window") ||
 				strings.Contains(errMsg, "maximum context length") ||
 				strings.Contains(errMsg, "token limit") ||
 				strings.Contains(errMsg, "too many tokens") ||
@ -2165,6 +2163,7 @@ turnLoop:
 				"iteration": iteration,
 			})

+		allResponsesHandled := len(normalizedToolCalls) > 0
 		assistantMsg := providers.Message{
 			Role:             "assistant",
 			Content:          response.Content,
@ -2221,6 +2220,7 @@ turnLoop:
 						toolArgs = toolReq.Arguments
 					}
 				case HookActionDenyTool:
+					allResponsesHandled = false
 					denyContent := hookDeniedToolContent("Tool execution denied by hook", decision.Reason)
 					al.emitEvent(
 						EventKindToolExecSkipped,
@ -2260,6 +2260,7 @@ turnLoop:
 					ChatID:    ts.chatID,
 				})
 				if !approval.Approved {
+					allResponsesHandled = false
 					denyContent := hookDeniedToolContent("Tool execution denied by approval hook", approval.Reason)
 					al.emitEvent(
 						EventKindToolExecSkipped,
@ -2301,7 +2302,9 @@ turnLoop:
 			)

 			// Send tool feedback to chat channel if enabled (from HEAD)
-			if al.cfg.Agents.Defaults.IsToolFeedbackEnabled() && ts.channel != "" {
+			if al.cfg.Agents.Defaults.IsToolFeedbackEnabled() &&
+				ts.channel != "" &&
+				!ts.opts.SuppressToolFeedback {
 				feedbackPreview := utils.Truncate(
 					string(argsJSON),
 					al.cfg.Agents.Defaults.GetToolFeedbackMaxArgsLength(),
@ -2333,10 +2336,7 @@ turnLoop:
 				}

 				// Determine content for the agent loop (ForLLM or error).
-				content := result.ForLLM
-				if content == "" && result.Err != nil {
-					content = result.Err.Error()
-				}
+				content := result.ContentForLLM()
 				if content == "" {
 					return
 				}
@ -2420,6 +2420,50 @@ turnLoop:
 			if toolResult == nil {
 				toolResult = tools.ErrorResult("hook returned nil tool result")
 			}
+			if len(toolResult.Media) > 0 && toolResult.ResponseHandled {
+				parts := make([]bus.MediaPart, 0, len(toolResult.Media))
+				for _, ref := range toolResult.Media {
+					part := bus.MediaPart{Ref: ref}
+					if al.mediaStore != nil {
+						if _, meta, err := al.mediaStore.ResolveWithMeta(ref); err == nil {
+							part.Filename = meta.Filename
+							part.ContentType = meta.ContentType
+							part.Type = inferMediaType(meta.Filename, meta.ContentType)
+						}
+					}
+					parts = append(parts, part)
+				}
+				outboundMedia := bus.OutboundMediaMessage{
+					Channel: ts.channel,
+					ChatID:  ts.chatID,
+					Parts:   parts,
+				}
+				if al.channelManager != nil && ts.channel != "" && !constants.IsInternalChannel(ts.channel) {
+					if err := al.channelManager.SendMedia(ctx, outboundMedia); err != nil {
+						logger.WarnCF("agent", "Failed to deliver handled tool media",
+							map[string]any{
+								"agent_id": ts.agent.ID,
+								"tool":     toolName,
+								"channel":  ts.channel,
+								"chat_id":  ts.chatID,
+								"error":    err.Error(),
+							})
+						toolResult = tools.ErrorResult(fmt.Sprintf("failed to deliver attachment: %v", err)).WithError(err)
+					}
+				} else if al.bus != nil {
+					al.bus.PublishOutboundMedia(ctx, outboundMedia)
+					// Queuing media is only best-effort; it has not been delivered yet.
+					toolResult.ResponseHandled = false
+				}
+			}
+
+			if len(toolResult.Media) > 0 && !toolResult.ResponseHandled {
+				toolResult.ArtifactTags = buildArtifactTags(al.mediaStore, toolResult.Media)
+			}
+
+			if !toolResult.ResponseHandled {
+				allResponsesHandled = false
+			}

 			if !toolResult.Silent && toolResult.ForUser != "" && ts.opts.SendResponse {
 				al.bus.PublishOutbound(ctx, bus.OutboundMessage{
@ -2434,30 +2478,7 @@ turnLoop:
 					})
 			}

-			if len(toolResult.Media) > 0 {
-				parts := make([]bus.MediaPart, 0, len(toolResult.Media))
-				for _, ref := range toolResult.Media {
-					part := bus.MediaPart{Ref: ref}
-					if al.mediaStore != nil {
-						if _, meta, err := al.mediaStore.ResolveWithMeta(ref); err == nil {
-							part.Filename = meta.Filename
-							part.ContentType = meta.ContentType
-							part.Type = inferMediaType(meta.Filename, meta.ContentType)
-						}
-					}
-					parts = append(parts, part)
-				}
-				al.bus.PublishOutboundMedia(ctx, bus.OutboundMediaMessage{
-					Channel: ts.channel,
-					ChatID:  ts.chatID,
-					Parts:   parts,
-				})
-			}
-
-			contentForLLM := toolResult.ForLLM
-			if contentForLLM == "" && toolResult.Err != nil {
-				contentForLLM = toolResult.Err.Error()
-			}
+			contentForLLM := toolResult.ContentForLLM()

 			// Filter sensitive data (API keys, tokens, secrets) before sending to LLM
 			if al.cfg.Tools.IsFilterSensitiveDataEnabled() {
@ -2552,6 +2573,70 @@ turnLoop:
 			}
 		}

+		if allResponsesHandled {
+			if len(pendingMessages) > 0 {
+				logger.InfoCF("agent", "Pending steering exists after handled tool delivery; continuing turn before finalizing",
+					map[string]any{
+						"agent_id":       ts.agent.ID,
+						"steering_count": len(pendingMessages),
+						"session_key":    ts.sessionKey,
+					})
+				finalContent = ""
+				goto turnLoop
+			}
+
+			if steerMsgs := al.dequeueSteeringMessagesForScope(ts.sessionKey); len(steerMsgs) > 0 {
+				logger.InfoCF("agent", "Steering arrived after handled tool delivery; continuing turn before finalizing",
+					map[string]any{
+						"agent_id":       ts.agent.ID,
+						"steering_count": len(steerMsgs),
+						"session_key":    ts.sessionKey,
+					})
+				pendingMessages = append(pendingMessages, steerMsgs...)
+				finalContent = ""
+				goto turnLoop
+			}
+
+			summaryMsg := providers.Message{
+				Role:    "assistant",
+				Content: handledToolResponseSummary,
+			}
+
+			if !ts.opts.NoHistory {
+				ts.agent.Sessions.AddMessage(ts.sessionKey, summaryMsg.Role, summaryMsg.Content)
+				ts.recordPersistedMessage(summaryMsg)
+				if err := ts.agent.Sessions.Save(ts.sessionKey); err != nil {
+					turnStatus = TurnEndStatusError
+					al.emitEvent(
+						EventKindError,
+						ts.eventMeta("runTurn", "turn.error"),
+						ErrorPayload{
+							Stage:   "session_save",
+							Message: err.Error(),
+						},
+					)
+					return turnResult{}, err
+				}
+			}
+			if ts.opts.EnableSummary {
+				al.maybeSummarize(ts.agent, ts.sessionKey, ts.scope)
+			}
+
+			ts.setPhase(TurnPhaseCompleted)
+			ts.setFinalContent("")
+			logger.InfoCF("agent", "Tool output satisfied delivery; ending turn without follow-up LLM",
+				map[string]any{
+					"agent_id":   ts.agent.ID,
+					"iteration":  iteration,
+					"tool_count": len(normalizedToolCalls),
+				})
+			return turnResult{
+				finalContent: "",
+				status:       turnStatus,
+				followUps:    append([]bus.InboundMessage(nil), ts.followUps...),
+			}, nil
+		}
+
 		ts.agent.Tools.TickTTL()
 		logger.DebugCF("agent", "TTL tick after tool execution", map[string]any{
 			"agent_id": ts.agent.ID, "iteration": iteration,
@ -3159,6 +3244,97 @@ func (al *AgentLoop) handleCommand(
 	}
 }

+func activeSkillNames(agent *AgentInstance, opts processOptions) []string {
+	if agent == nil {
+		return nil
+	}
+
+	combined := make([]string, 0, len(agent.SkillsFilter)+len(opts.ForcedSkills))
+	combined = append(combined, agent.SkillsFilter...)
+	combined = append(combined, opts.ForcedSkills...)
+	if len(combined) == 0 {
+		return nil
+	}
+
+	var resolved []string
+	seen := make(map[string]struct{}, len(combined))
+	for _, name := range combined {
+		name = strings.TrimSpace(name)
+		if name == "" {
+			continue
+		}
+		if agent.ContextBuilder != nil {
+			if canonical, ok := agent.ContextBuilder.ResolveSkillName(name); ok {
+				name = canonical
+			}
+		}
+		key := strings.ToLower(name)
+		if _, ok := seen[key]; ok {
+			continue
+		}
+		seen[key] = struct{}{}
+		resolved = append(resolved, name)
+	}
+
+	return resolved
+}
+
+func (al *AgentLoop) applyExplicitSkillCommand(
+	raw string,
+	agent *AgentInstance,
+	opts *processOptions,
+) (matched bool, handled bool, reply string) {
+	cmdName, ok := commands.CommandName(raw)
+	if !ok || cmdName != "use" {
+		return false, false, ""
+	}
+
+	if agent == nil || agent.ContextBuilder == nil {
+		return true, true, commandsUnavailableSkillMessage()
+	}
+
+	parts := strings.Fields(strings.TrimSpace(raw))
+	if len(parts) < 2 {
+		return true, true, buildUseCommandHelp(agent)
+	}
+
+	arg := strings.TrimSpace(parts[1])
+	if strings.EqualFold(arg, "clear") || strings.EqualFold(arg, "off") {
+		if opts != nil {
+			al.clearPendingSkills(opts.SessionKey)
+		}
+		return true, true, "Cleared pending skill override."
+	}
+
+	skillName, ok := agent.ContextBuilder.ResolveSkillName(arg)
+	if !ok {
+		return true, true, fmt.Sprintf("Unknown skill: %s\nUse /list skills to see installed skills.", arg)
+	}
+
+	if len(parts) < 3 {
+		if opts == nil || strings.TrimSpace(opts.SessionKey) == "" {
+			return true, true, commandsUnavailableSkillMessage()
+		}
+		al.setPendingSkills(opts.SessionKey, []string{skillName})
+		return true, true, fmt.Sprintf(
+			"Skill %q is armed for your next message. Send your next prompt normally, or use /use clear to cancel.",
+			skillName,
+		)
+	}
+
+	message := strings.TrimSpace(strings.Join(parts[2:], " "))
+	if message == "" {
+		return true, true, buildUseCommandHelp(agent)
+	}
+
+	if opts != nil {
+		opts.ForcedSkills = append(opts.ForcedSkills, skillName)
+		opts.UserMessage = message
+	}
+
+	return true, false, ""
+}
+
 func (al *AgentLoop) buildCommandsRuntime(agent *AgentInstance, opts *processOptions) *commands.Runtime {
 	registry := al.GetRegistry()
 	cfg := al.GetConfig()
@ -3199,6 +3375,9 @@ func (al *AgentLoop) buildCommandsRuntime(agent *AgentInstance, opts *processOpt
 		return al.reloadFunc()
 	}
 	if agent != nil {
+		if agent.ContextBuilder != nil {
+			rt.ListSkillNames = agent.ContextBuilder.ListSkillNames
+		}
 		rt.GetModelInfo = func() (string, string) {
 			return agent.Model, resolvedCandidateProvider(agent.Candidates, cfg.Agents.Defaults.Provider)
 		}
@ -3251,79 +3430,6 @@ func (al *AgentLoop) buildCommandsRuntime(agent *AgentInstance, opts *processOpt
 	return rt
 }

-func activeSkillNames(agent *AgentInstance, opts processOptions) []string {
-	var out []string
-	seen := make(map[string]struct{})
-
-	appendNames := func(names []string) {
-		for _, name := range names {
-			name = strings.TrimSpace(name)
-			if name == "" {
-				continue
-			}
-			if _, exists := seen[name]; exists {
-				continue
-			}
-			seen[name] = struct{}{}
-			out = append(out, name)
-		}
-	}
-
-	if agent != nil {
-		appendNames(agent.SkillsFilter)
-	}
-	appendNames(opts.ForcedSkills)
-
-	return out
-}
-
-func (al *AgentLoop) applyExplicitSkillCommand(
-	raw string,
-	agent *AgentInstance,
-	opts *processOptions,
-) (matched bool, handled bool, reply string) {
-	commandName, ok := commands.CommandName(raw)
-	if !ok || commandName != "use" {
-		return false, false, ""
-	}
-
-	if agent == nil || agent.ContextBuilder == nil {
-		return true, true, commandsUnavailableSkillMessage()
-	}
-
-	fields := strings.Fields(strings.TrimSpace(raw))
-	if len(fields) < 2 {
-		return true, true, buildUseCommandHelp(agent)
-	}
-
-	if strings.EqualFold(fields[1], "clear") || strings.EqualFold(fields[1], "off") {
-		al.clearPendingSkills(opts.SessionKey)
-		return true, true, "Cleared pending skill override."
-	}
-
-	canonicalSkill, ok := agent.ContextBuilder.ResolveSkillName(fields[1])
-	if !ok {
-		return true, true, fmt.Sprintf("Unknown skill: %s\nUse /list skills to see installed skills.", fields[1])
-	}
-
-	if len(fields) == 2 {
-		al.setPendingSkills(opts.SessionKey, []string{canonicalSkill})
-		return true, true, fmt.Sprintf(
-			"Skill %q is armed for your next message.\nSend your next request normally, or use /use clear to cancel.",
-			canonicalSkill,
-		)
-	}
-
-	message := strings.TrimSpace(strings.Join(fields[2:], " "))
-	if message == "" {
-		return true, true, buildUseCommandHelp(agent)
-	}
-
-	opts.UserMessage = message
-	opts.ForcedSkills = append(opts.ForcedSkills, canonicalSkill)
-	return true, false, ""
-}
-
 func commandsUnavailableSkillMessage() string {
 	return "Skill selection is unavailable in the current context."
 }
--- a/pkg/agent/loop_media.go
+++ b/pkg/agent/loop_media.go
@ -87,6 +87,24 @@ func resolveMediaRefs(messages []providers.Message, store media.MediaStore, maxS
 	return result
 }

+func buildArtifactTags(store media.MediaStore, refs []string) []string {
+	if store == nil || len(refs) == 0 {
+		return nil
+	}
+
+	tags := make([]string, 0, len(refs))
+	for _, ref := range refs {
+		localPath, meta, err := store.ResolveWithMeta(ref)
+		if err != nil {
+			continue
+		}
+		mime := detectMIME(localPath, meta)
+		tags = append(tags, buildPathTag(mime, localPath))
+	}
+
+	return tags
+}
+
 // detectMIME determines the MIME type from metadata or magic-bytes detection.
 // Returns empty string if detection fails.
 func detectMIME(localPath string, meta media.MediaMeta) string {
--- a/pkg/agent/loop_test.go
+++ b/pkg/agent/loop_test.go
@ -3,6 +3,7 @@ package agent
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"net/http"
 	"net/http/httptest"
@ -33,6 +34,41 @@ func (f *fakeChannel) IsAllowed(string) bool                                   {
 func (f *fakeChannel) IsAllowedSender(sender bus.SenderInfo) bool              { return true }
 func (f *fakeChannel) ReasoningChannelID() string                              { return f.id }

+type fakeMediaChannel struct {
+	fakeChannel
+	sentMedia []bus.OutboundMediaMessage
+}
+
+func (f *fakeMediaChannel) SendMedia(ctx context.Context, msg bus.OutboundMediaMessage) error {
+	f.sentMedia = append(f.sentMedia, msg)
+	return nil
+}
+
+func newStartedTestChannelManager(
+	t *testing.T,
+	msgBus *bus.MessageBus,
+	store media.MediaStore,
+	name string,
+	ch channels.Channel,
+) *channels.Manager {
+	t.Helper()
+
+	cm, err := channels.NewManager(&config.Config{}, msgBus, store)
+	if err != nil {
+		t.Fatalf("NewManager() error = %v", err)
+	}
+	cm.RegisterChannel(name, ch)
+	if err := cm.StartAll(context.Background()); err != nil {
+		t.Fatalf("StartAll() error = %v", err)
+	}
+	t.Cleanup(func() {
+		if err := cm.StopAll(context.Background()); err != nil {
+			t.Fatalf("StopAll() error = %v", err)
+		}
+	})
+	return cm
+}
+
 type recordingProvider struct {
 	lastMessages []providers.Message
 }
@ -289,6 +325,86 @@ func TestProcessMessage_UseCommandArmsSkillForNextMessage(t *testing.T) {
 	}
 }

+func TestApplyExplicitSkillCommand_ArmsSkillForNextMessage(t *testing.T) {
+	al, cfg, _, _, cleanup := newTestAgentLoop(t)
+	defer cleanup()
+
+	if err := os.MkdirAll(filepath.Join(cfg.Agents.Defaults.Workspace, "skills", "finance-news"), 0o755); err != nil {
+		t.Fatalf("MkdirAll(skill) error = %v", err)
+	}
+	if err := os.WriteFile(
+		filepath.Join(cfg.Agents.Defaults.Workspace, "skills", "finance-news", "SKILL.md"),
+		[]byte("# Finance News\n\nUse web tools for current finance updates.\n"),
+		0o644,
+	); err != nil {
+		t.Fatalf("WriteFile(SKILL.md) error = %v", err)
+	}
+
+	agent := al.GetRegistry().GetDefaultAgent()
+	if agent == nil {
+		t.Fatal("expected default agent")
+	}
+
+	opts := &processOptions{SessionKey: "agent:main:test"}
+	matched, handled, reply := al.applyExplicitSkillCommand("/use finance-news", agent, opts)
+	if !matched {
+		t.Fatal("expected /use command to match")
+	}
+	if !handled {
+		t.Fatal("expected /use without inline message to be handled immediately")
+	}
+	if !strings.Contains(reply, `Skill "finance-news" is armed for your next message`) {
+		t.Fatalf("unexpected reply: %q", reply)
+	}
+
+	pending := al.takePendingSkills(opts.SessionKey)
+	if len(pending) != 1 || pending[0] != "finance-news" {
+		t.Fatalf("pending skills = %#v, want [finance-news]", pending)
+	}
+}
+
+func TestApplyExplicitSkillCommand_InlineMessageMutatesOptions(t *testing.T) {
+	al, cfg, _, _, cleanup := newTestAgentLoop(t)
+	defer cleanup()
+
+	if err := os.MkdirAll(filepath.Join(cfg.Agents.Defaults.Workspace, "skills", "finance-news"), 0o755); err != nil {
+		t.Fatalf("MkdirAll(skill) error = %v", err)
+	}
+	if err := os.WriteFile(
+		filepath.Join(cfg.Agents.Defaults.Workspace, "skills", "finance-news", "SKILL.md"),
+		[]byte("# Finance News\n\nUse web tools for current finance updates.\n"),
+		0o644,
+	); err != nil {
+		t.Fatalf("WriteFile(SKILL.md) error = %v", err)
+	}
+
+	agent := al.GetRegistry().GetDefaultAgent()
+	if agent == nil {
+		t.Fatal("expected default agent")
+	}
+
+	opts := &processOptions{
+		SessionKey:  "agent:main:test",
+		UserMessage: "/use finance-news dammi le ultime news",
+	}
+	matched, handled, reply := al.applyExplicitSkillCommand(opts.UserMessage, agent, opts)
+	if !matched {
+		t.Fatal("expected /use command to match")
+	}
+	if handled {
+		t.Fatal("expected /use with inline message to fall through into normal agent execution")
+	}
+	if reply != "" {
+		t.Fatalf("unexpected reply: %q", reply)
+	}
+	if opts.UserMessage != "dammi le ultime news" {
+		t.Fatalf("opts.UserMessage = %q, want %q", opts.UserMessage, "dammi le ultime news")
+	}
+	if len(opts.ForcedSkills) != 1 || opts.ForcedSkills[0] != "finance-news" {
+		t.Fatalf("opts.ForcedSkills = %#v, want [finance-news]", opts.ForcedSkills)
+	}
+}
+
 func TestRecordLastChannel(t *testing.T) {
 	al, cfg, msgBus, provider, cleanup := newTestAgentLoop(t)
 	defer cleanup()
@ -455,6 +571,217 @@ func TestToolRegistry_GetDefinitions(t *testing.T) {
 	}
 }

+func TestProcessMessage_MediaToolHandledSkipsFollowUpLLMAndFinalText(t *testing.T) {
+	tmpDir := t.TempDir()
+	cfg := &config.Config{
+		Agents: config.AgentsConfig{
+			Defaults: config.AgentDefaults{
+				Workspace:         tmpDir,
+				ModelName:         "test-model",
+				MaxTokens:         4096,
+				MaxToolIterations: 10,
+			},
+		},
+	}
+
+	msgBus := bus.NewMessageBus()
+	provider := &handledMediaProvider{}
+	al := NewAgentLoop(cfg, msgBus, provider)
+
+	store := media.NewFileMediaStore()
+	al.SetMediaStore(store)
+	telegramChannel := &fakeMediaChannel{fakeChannel: fakeChannel{id: "rid-telegram"}}
+	al.SetChannelManager(newStartedTestChannelManager(t, msgBus, store, "telegram", telegramChannel))
+
+	imagePath := filepath.Join(tmpDir, "screen.png")
+	if err := os.WriteFile(imagePath, []byte("fake screenshot"), 0o644); err != nil {
+		t.Fatalf("WriteFile(imagePath) error = %v", err)
+	}
+
+	al.RegisterTool(&handledMediaTool{
+		store: store,
+		path:  imagePath,
+	})
+
+	response, err := al.processMessage(context.Background(), bus.InboundMessage{
+		Channel:  "telegram",
+		ChatID:   "chat1",
+		SenderID: "user1",
+		Content:  "take a screenshot of the screen and send it to me",
+	})
+	if err != nil {
+		t.Fatalf("processMessage() error = %v", err)
+	}
+	if response != "" {
+		t.Fatalf("expected no final response when media tool already handled delivery, got %q", response)
+	}
+	if provider.calls != 1 {
+		t.Fatalf("expected exactly 1 LLM call, got %d", provider.calls)
+	}
+	if len(provider.toolCounts) != 1 {
+		t.Fatalf("expected tool counts for 1 provider call, got %d", len(provider.toolCounts))
+	}
+	if provider.toolCounts[0] == 0 {
+		t.Fatal("expected tools to be available on the first LLM call")
+	}
+
+	if len(telegramChannel.sentMedia) != 1 {
+		t.Fatalf("expected exactly 1 synchronously sent media message, got %d", len(telegramChannel.sentMedia))
+	}
+	if telegramChannel.sentMedia[0].Channel != "telegram" || telegramChannel.sentMedia[0].ChatID != "chat1" {
+		t.Fatalf("unexpected sent media target: %+v", telegramChannel.sentMedia[0])
+	}
+	if len(telegramChannel.sentMedia[0].Parts) != 1 {
+		t.Fatalf("expected exactly 1 sent media part, got %d", len(telegramChannel.sentMedia[0].Parts))
+	}
+
+	select {
+	case extra := <-msgBus.OutboundMediaChan():
+		t.Fatalf("expected handled media to bypass async queue, got %+v", extra)
+	default:
+	}
+
+	defaultAgent := al.GetRegistry().GetDefaultAgent()
+	if defaultAgent == nil {
+		t.Fatal("expected default agent")
+	}
+	route, _, err := al.resolveMessageRoute(bus.InboundMessage{
+		Channel:  "telegram",
+		ChatID:   "chat1",
+		SenderID: "user1",
+		Content:  "take a screenshot of the screen and send it to me",
+	})
+	if err != nil {
+		t.Fatalf("resolveMessageRoute() error = %v", err)
+	}
+	sessionKey := resolveScopeKey(route, "")
+	history := defaultAgent.Sessions.GetHistory(sessionKey)
+	if len(history) == 0 {
+		t.Fatal("expected session history to be saved")
+	}
+	last := history[len(history)-1]
+	if last.Role != "assistant" || last.Content != "Requested output delivered via tool attachment." {
+		t.Fatalf("expected handled assistant summary in history, got %+v", last)
+	}
+}
+
+func TestProcessMessage_HandledToolProcessesQueuedSteeringBeforeReturning(t *testing.T) {
+	tmpDir := t.TempDir()
+	cfg := &config.Config{
+		Agents: config.AgentsConfig{
+			Defaults: config.AgentDefaults{
+				Workspace:         tmpDir,
+				ModelName:         "test-model",
+				MaxTokens:         4096,
+				MaxToolIterations: 10,
+			},
+		},
+	}
+
+	msgBus := bus.NewMessageBus()
+	provider := &handledMediaWithSteeringProvider{}
+	al := NewAgentLoop(cfg, msgBus, provider)
+
+	store := media.NewFileMediaStore()
+	al.SetMediaStore(store)
+	telegramChannel := &fakeMediaChannel{fakeChannel: fakeChannel{id: "rid-telegram"}}
+	al.SetChannelManager(newStartedTestChannelManager(t, msgBus, store, "telegram", telegramChannel))
+
+	imagePath := filepath.Join(tmpDir, "screen-steering.png")
+	if err := os.WriteFile(imagePath, []byte("fake screenshot"), 0o644); err != nil {
+		t.Fatalf("WriteFile(imagePath) error = %v", err)
+	}
+
+	al.RegisterTool(&handledMediaWithSteeringTool{
+		store: store,
+		path:  imagePath,
+		loop:  al,
+	})
+
+	response, err := al.processMessage(context.Background(), bus.InboundMessage{
+		Channel:  "telegram",
+		ChatID:   "chat1",
+		SenderID: "user1",
+		Content:  "take a screenshot of the screen and send it to me",
+	})
+	if err != nil {
+		t.Fatalf("processMessage() error = %v", err)
+	}
+	if response != "Handled the queued steering message." {
+		t.Fatalf("response = %q, want queued steering response", response)
+	}
+	if provider.calls != 2 {
+		t.Fatalf("expected 2 LLM calls after queued steering, got %d", provider.calls)
+	}
+	if len(telegramChannel.sentMedia) != 1 {
+		t.Fatalf("expected exactly 1 synchronously sent media message, got %d", len(telegramChannel.sentMedia))
+	}
+}
+
+func TestProcessMessage_MediaArtifactCanBeForwardedBySendFile(t *testing.T) {
+	tmpDir := t.TempDir()
+	cfg := config.DefaultConfig()
+	cfg.Agents.Defaults.Workspace = tmpDir
+	cfg.Agents.Defaults.ModelName = "test-model"
+	cfg.Agents.Defaults.MaxTokens = 4096
+	cfg.Agents.Defaults.MaxToolIterations = 10
+
+	msgBus := bus.NewMessageBus()
+	provider := &artifactThenSendProvider{}
+	al := NewAgentLoop(cfg, msgBus, provider)
+
+	store := media.NewFileMediaStore()
+	al.SetMediaStore(store)
+	telegramChannel := &fakeMediaChannel{fakeChannel: fakeChannel{id: "rid-telegram"}}
+	al.SetChannelManager(newStartedTestChannelManager(t, msgBus, store, "telegram", telegramChannel))
+
+	mediaDir := media.TempDir()
+	if err := os.MkdirAll(mediaDir, 0o700); err != nil {
+		t.Fatalf("MkdirAll(mediaDir) error = %v", err)
+	}
+	imagePath := filepath.Join(mediaDir, "artifact-screen.png")
+	if err := os.WriteFile(imagePath, []byte("fake screenshot"), 0o644); err != nil {
+		t.Fatalf("WriteFile(imagePath) error = %v", err)
+	}
+
+	al.RegisterTool(&mediaArtifactTool{
+		store: store,
+		path:  imagePath,
+	})
+
+	response, err := al.processMessage(context.Background(), bus.InboundMessage{
+		Channel:  "telegram",
+		ChatID:   "chat1",
+		SenderID: "user1",
+		Content:  "take a screenshot of the screen and send it to me",
+	})
+	if err != nil {
+		t.Fatalf("processMessage() error = %v", err)
+	}
+	if response != "" {
+		t.Fatalf("expected no final response after send_file handled delivery, got %q", response)
+	}
+	if provider.calls != 2 {
+		t.Fatalf("expected 2 LLM calls (artifact + send_file), got %d", provider.calls)
+	}
+
+	if len(telegramChannel.sentMedia) != 1 {
+		t.Fatalf("expected exactly 1 synchronously sent media message, got %d", len(telegramChannel.sentMedia))
+	}
+	if telegramChannel.sentMedia[0].Channel != "telegram" || telegramChannel.sentMedia[0].ChatID != "chat1" {
+		t.Fatalf("unexpected sent media target: %+v", telegramChannel.sentMedia[0])
+	}
+	if len(telegramChannel.sentMedia[0].Parts) != 1 {
+		t.Fatalf("expected exactly 1 sent media part, got %d", len(telegramChannel.sentMedia[0].Parts))
+	}
+
+	select {
+	case extra := <-msgBus.OutboundMediaChan():
+		t.Fatalf("expected synchronous send_file delivery to bypass async queue, got %+v", extra)
+	default:
+	}
+}
+
 // TestAgentLoop_GetStartupInfo verifies startup info contains tools
 func TestAgentLoop_GetStartupInfo(t *testing.T) {
 	tmpDir, err := os.MkdirTemp("", "agent-test-*")
@ -600,6 +927,132 @@ func (m *countingMockProvider) GetDefaultModel() string {
 	return "counting-mock-model"
 }

+type handledMediaProvider struct {
+	calls      int
+	toolCounts []int
+}
+
+func (m *handledMediaProvider) Chat(
+	ctx context.Context,
+	messages []providers.Message,
+	tools []providers.ToolDefinition,
+	model string,
+	opts map[string]any,
+) (*providers.LLMResponse, error) {
+	m.calls++
+	m.toolCounts = append(m.toolCounts, len(tools))
+	if m.calls == 1 {
+		return &providers.LLMResponse{
+			Content: "Taking the screenshot now.",
+			ToolCalls: []providers.ToolCall{{
+				ID:        "call_handled_media",
+				Type:      "function",
+				Name:      "handled_media_tool",
+				Arguments: map[string]any{},
+			}},
+		}, nil
+	}
+	return &providers.LLMResponse{}, nil
+}
+
+func (m *handledMediaProvider) GetDefaultModel() string {
+	return "handled-media-model"
+}
+
+type artifactThenSendProvider struct {
+	calls int
+}
+
+func (m *artifactThenSendProvider) Chat(
+	ctx context.Context,
+	messages []providers.Message,
+	tools []providers.ToolDefinition,
+	model string,
+	opts map[string]any,
+) (*providers.LLMResponse, error) {
+	m.calls++
+	if m.calls == 1 {
+		return &providers.LLMResponse{
+			Content: "Taking the screenshot now.",
+			ToolCalls: []providers.ToolCall{{
+				ID:        "call_artifact_media",
+				Type:      "function",
+				Name:      "media_artifact_tool",
+				Arguments: map[string]any{},
+			}},
+		}, nil
+	}
+
+	var artifactPath string
+	for i := len(messages) - 1; i >= 0; i-- {
+		if messages[i].Role != "tool" {
+			continue
+		}
+		start := strings.Index(messages[i].Content, "[file:")
+		if start < 0 {
+			continue
+		}
+		rest := messages[i].Content[start+len("[file:"):]
+		end := strings.Index(rest, "]")
+		if end < 0 {
+			continue
+		}
+		artifactPath = rest[:end]
+		break
+	}
+	if artifactPath == "" {
+		return nil, fmt.Errorf("provider did not receive artifact path in tool result")
+	}
+
+	return &providers.LLMResponse{
+		Content: "",
+		ToolCalls: []providers.ToolCall{{
+			ID:        "call_send_file",
+			Type:      "function",
+			Name:      "send_file",
+			Arguments: map[string]any{"path": artifactPath},
+		}},
+	}, nil
+}
+
+func (m *artifactThenSendProvider) GetDefaultModel() string {
+	return "artifact-then-send-model"
+}
+
+type toolFeedbackProvider struct {
+	filePath string
+	calls    int
+}
+
+func (m *toolFeedbackProvider) Chat(
+	ctx context.Context,
+	messages []providers.Message,
+	tools []providers.ToolDefinition,
+	model string,
+	opts map[string]any,
+) (*providers.LLMResponse, error) {
+	m.calls++
+	if m.calls == 1 {
+		return &providers.LLMResponse{
+			ToolCalls: []providers.ToolCall{{
+				ID:        "call_heartbeat_read_file",
+				Type:      "function",
+				Name:      "read_file",
+				Arguments: map[string]any{"path": m.filePath},
+			}},
+		}, nil
+	}
+
+	return &providers.LLMResponse{
+		Content:   "HEARTBEAT_OK",
+		ToolCalls: []providers.ToolCall{},
+	}, nil
+}
+
+func (m *toolFeedbackProvider) GetDefaultModel() string {
+	return "heartbeat-tool-feedback-model"
+}
+
 type toolLimitOnlyProvider struct{}

 func (m *toolLimitOnlyProvider) Chat(
@ -636,8 +1089,9 @@ func (m *mockCustomTool) Description() string {

 func (m *mockCustomTool) Parameters() map[string]any {
 	return map[string]any{
-		"type":       "object",
-		"properties": map[string]any{},
+		"type":                 "object",
+		"properties":           map[string]any{},
+		"additionalProperties": true,
 	}
 }

@ -645,6 +1099,135 @@ func (m *mockCustomTool) Execute(ctx context.Context, args map[string]any) *tool
 	return tools.SilentResult("Custom tool executed")
 }

+type handledMediaTool struct {
+	store media.MediaStore
+	path  string
+}
+
+func (m *handledMediaTool) Name() string { return "handled_media_tool" }
+func (m *handledMediaTool) Description() string {
+	return "Returns a media attachment and fully handles the user response"
+}
+
+func (m *handledMediaTool) Parameters() map[string]any {
+	return map[string]any{
+		"type":       "object",
+		"properties": map[string]any{},
+	}
+}
+
+func (m *handledMediaTool) Execute(ctx context.Context, args map[string]any) *tools.ToolResult {
+	ref, err := m.store.Store(m.path, media.MediaMeta{
+		Filename:    filepath.Base(m.path),
+		ContentType: "image/png",
+		Source:      "test:handled_media_tool",
+	}, "test:handled_media")
+	if err != nil {
+		return tools.ErrorResult(err.Error()).WithError(err)
+	}
+	return tools.MediaResult("Attachment delivered by tool.", []string{ref}).WithResponseHandled()
+}
+
+type handledMediaWithSteeringProvider struct {
+	calls int
+}
+
+func (m *handledMediaWithSteeringProvider) Chat(
+	ctx context.Context,
+	messages []providers.Message,
+	tools []providers.ToolDefinition,
+	model string,
+	opts map[string]any,
+) (*providers.LLMResponse, error) {
+	m.calls++
+	if m.calls == 1 {
+		return &providers.LLMResponse{
+			Content: "Taking the screenshot now.",
+			ToolCalls: []providers.ToolCall{{
+				ID:        "call_handled_media_steering",
+				Type:      "function",
+				Name:      "handled_media_with_steering_tool",
+				Arguments: map[string]any{},
+			}},
+		}, nil
+	}
+
+	for _, msg := range messages {
+		if msg.Role == "user" && msg.Content == "what about this instead?" {
+			return &providers.LLMResponse{Content: "Handled the queued steering message."}, nil
+		}
+	}
+
+	return nil, fmt.Errorf("provider did not receive queued steering message")
+}
+
+func (m *handledMediaWithSteeringProvider) GetDefaultModel() string {
+	return "handled-media-with-steering-model"
+}
+
+type handledMediaWithSteeringTool struct {
+	store media.MediaStore
+	path  string
+	loop  *AgentLoop
+}
+
+func (m *handledMediaWithSteeringTool) Name() string { return "handled_media_with_steering_tool" }
+func (m *handledMediaWithSteeringTool) Description() string {
+	return "Returns handled media and enqueues a steering message during execution"
+}
+
+func (m *handledMediaWithSteeringTool) Parameters() map[string]any {
+	return map[string]any{
+		"type":       "object",
+		"properties": map[string]any{},
+	}
+}
+
+func (m *handledMediaWithSteeringTool) Execute(ctx context.Context, args map[string]any) *tools.ToolResult {
+	if err := m.loop.Steer(providers.Message{Role: "user", Content: "what about this instead?"}); err != nil {
+		return tools.ErrorResult(err.Error()).WithError(err)
+	}
+
+	ref, err := m.store.Store(m.path, media.MediaMeta{
+		Filename:    filepath.Base(m.path),
+		ContentType: "image/png",
+		Source:      "test:handled_media_with_steering_tool",
+	}, "test:handled_media_with_steering")
+	if err != nil {
+		return tools.ErrorResult(err.Error()).WithError(err)
+	}
+	return tools.MediaResult("Attachment delivered by tool.", []string{ref}).WithResponseHandled()
+}
+
+type mediaArtifactTool struct {
+	store media.MediaStore
+	path  string
+}
+
+func (m *mediaArtifactTool) Name() string { return "media_artifact_tool" }
+func (m *mediaArtifactTool) Description() string {
+	return "Returns a media artifact that the agent can forward or save later"
+}
+
+func (m *mediaArtifactTool) Parameters() map[string]any {
+	return map[string]any{
+		"type":       "object",
+		"properties": map[string]any{},
+	}
+}
+
+func (m *mediaArtifactTool) Execute(ctx context.Context, args map[string]any) *tools.ToolResult {
+	ref, err := m.store.Store(m.path, media.MediaMeta{
+		Filename:    filepath.Base(m.path),
+		ContentType: "image/png",
+		Source:      "test:media_artifact_tool",
+	}, "test:media_artifact")
+	if err != nil {
+		return tools.ErrorResult(err.Error()).WithError(err)
+	}
+	return tools.MediaResult("Artifact created.", []string{ref})
+}
+
 type toolLimitTestTool struct{}

 func (m *toolLimitTestTool) Name() string {
@ -884,24 +1467,16 @@ func TestProcessMessage_SwitchModelShowModelConsistency(t *testing.T) {
 				ModelName: "local",
 				Model:     "openai/local-model",
 				APIBase:   "https://local.example.invalid/v1",
+				APIKeys:   config.SimpleSecureStrings("test-key"),
 			},
 			{
 				ModelName: "deepseek",
 				Model:     "openrouter/deepseek/deepseek-v3.2",
 				APIBase:   "https://openrouter.ai/api/v1",
+				APIKeys:   config.SimpleSecureStrings("test-key"),
 			},
 		},
 	}
-	cfg.WithSecurity(&config.SecurityConfig{
-		ModelList: map[string]config.ModelSecurityEntry{
-			"local": {
-				APIKeys: []string{"test-key"},
-			},
-			"deepseek": {
-				APIKeys: []string{"test-key"},
-			},
-		},
-	})

 	msgBus := bus.NewMessageBus()
 	provider := &countingMockProvider{response: "LLM reply"}
@ -963,16 +1538,10 @@ func TestProcessMessage_SwitchModelRejectsUnknownAlias(t *testing.T) {
 				ModelName: "local",
 				Model:     "openai/local-model",
 				APIBase:   "https://local.example.invalid/v1",
+				APIKeys:   config.SimpleSecureStrings("test-key"),
 			},
 		},
 	}
-	cfg.WithSecurity(&config.SecurityConfig{
-		ModelList: map[string]config.ModelSecurityEntry{
-			"local": {
-				APIKeys: []string{"test-key"},
-			},
-		},
-	})

 	msgBus := bus.NewMessageBus()
 	provider := &countingMockProvider{response: "LLM reply"}
@ -1044,24 +1613,16 @@ func TestProcessMessage_SwitchModelRoutesSubsequentRequestsToSelectedProvider(t
 				ModelName: "local",
 				Model:     "openai/Qwen3.5-35B-A3B",
 				APIBase:   localServer.URL,
+				APIKeys:   config.SimpleSecureStrings("local-key"),
 			},
 			{
 				ModelName: "deepseek",
 				Model:     "openrouter/deepseek/deepseek-v3.2",
 				APIBase:   remoteServer.URL,
+				APIKeys:   config.SimpleSecureStrings("remote-key"),
 			},
 		},
 	}
-	cfg.WithSecurity(&config.SecurityConfig{
-		ModelList: map[string]config.ModelSecurityEntry{
-			"local": {
-				APIKeys: []string{"local-key"},
-			},
-			"deepseek": {
-				APIKeys: []string{"remote-key"},
-			},
-		},
-	})

 	msgBus := bus.NewMessageBus()
 	provider, _, err := providers.CreateProvider(cfg)
@ -1494,18 +2055,17 @@ func TestTargetReasoningChannelID_AllChannels(t *testing.T) {
 		t.Fatalf("Failed to create channel manager: %v", err)
 	}
 	for name, id := range map[string]string{
-		"whatsapp":  "rid-whatsapp",
-		"telegram":  "rid-telegram",
-		"feishu":    "rid-feishu",
-		"discord":   "rid-discord",
-		"maixcam":   "rid-maixcam",
-		"qq":        "rid-qq",
-		"dingtalk":  "rid-dingtalk",
-		"slack":     "rid-slack",
-		"line":      "rid-line",
-		"onebot":    "rid-onebot",
-		"wecom":     "rid-wecom",
-		"wecom_app": "rid-wecom-app",
+		"whatsapp": "rid-whatsapp",
+		"telegram": "rid-telegram",
+		"feishu":   "rid-feishu",
+		"discord":  "rid-discord",
+		"maixcam":  "rid-maixcam",
+		"qq":       "rid-qq",
+		"dingtalk": "rid-dingtalk",
+		"slack":    "rid-slack",
+		"line":     "rid-line",
+		"onebot":   "rid-onebot",
+		"wecom":    "rid-wecom",
 	} {
 		chManager.RegisterChannel(name, &fakeChannel{id: id})
 	}
@ -1525,7 +2085,6 @@ func TestTargetReasoningChannelID_AllChannels(t *testing.T) {
 		{channel: "line", wantID: "rid-line"},
 		{channel: "onebot", wantID: "rid-onebot"},
 		{channel: "wecom", wantID: "rid-wecom"},
-		{channel: "wecom_app", wantID: "rid-wecom-app"},
 		{channel: "unknown", wantID: ""},
 	}

@ -1717,7 +2276,7 @@ func TestProcessMessage_PublishesReasoningContentToReasoningChannel(t *testing.T
 		Agents: config.AgentsConfig{
 			Defaults: config.AgentDefaults{
 				Workspace:         tmpDir,
-				Model:             "test-model",
+				ModelName:         "test-model",
 				MaxTokens:         4096,
 				MaxToolIterations: 10,
 			},
@ -1767,6 +2326,112 @@ func TestProcessMessage_PublishesReasoningContentToReasoningChannel(t *testing.T
 	}
 }

+func TestProcessHeartbeat_DoesNotPublishToolFeedback(t *testing.T) {
+	tmpDir := t.TempDir()
+	heartbeatFile := filepath.Join(tmpDir, "heartbeat-task.txt")
+	if err := os.WriteFile(heartbeatFile, []byte("heartbeat task"), 0o644); err != nil {
+		t.Fatalf("WriteFile() error = %v", err)
+	}
+
+	cfg := &config.Config{
+		Agents: config.AgentsConfig{
+			Defaults: config.AgentDefaults{
+				Workspace:         tmpDir,
+				ModelName:         "test-model",
+				MaxTokens:         4096,
+				MaxToolIterations: 10,
+				ToolFeedback: config.ToolFeedbackConfig{
+					Enabled:       true,
+					MaxArgsLength: 300,
+				},
+			},
+		},
+		Tools: config.ToolsConfig{
+			ReadFile: config.ReadFileToolConfig{
+				Enabled: true,
+			},
+		},
+	}
+
+	msgBus := bus.NewMessageBus()
+	provider := &toolFeedbackProvider{filePath: heartbeatFile}
+	al := NewAgentLoop(cfg, msgBus, provider)
+
+	response, err := al.ProcessHeartbeat(context.Background(), "check heartbeat tasks", "telegram", "chat-1")
+	if err != nil {
+		t.Fatalf("ProcessHeartbeat() error = %v", err)
+	}
+	if response != "HEARTBEAT_OK" {
+		t.Fatalf("ProcessHeartbeat() response = %q, want %q", response, "HEARTBEAT_OK")
+	}
+
+	select {
+	case outbound := <-msgBus.OutboundChan():
+		t.Fatalf("expected no outbound tool feedback during heartbeat, got %+v", outbound)
+	case <-time.After(200 * time.Millisecond):
+	}
+}
+
+func TestProcessMessage_PublishesToolFeedbackWhenEnabled(t *testing.T) {
+	tmpDir := t.TempDir()
+	heartbeatFile := filepath.Join(tmpDir, "tool-feedback.txt")
+	if err := os.WriteFile(heartbeatFile, []byte("tool feedback task"), 0o644); err != nil {
+		t.Fatalf("WriteFile() error = %v", err)
+	}
+
+	cfg := &config.Config{
+		Agents: config.AgentsConfig{
+			Defaults: config.AgentDefaults{
+				Workspace:         tmpDir,
+				ModelName:         "test-model",
+				MaxTokens:         4096,
+				MaxToolIterations: 10,
+				ToolFeedback: config.ToolFeedbackConfig{
+					Enabled:       true,
+					MaxArgsLength: 300,
+				},
+			},
+		},
+		Tools: config.ToolsConfig{
+			ReadFile: config.ReadFileToolConfig{
+				Enabled: true,
+			},
+		},
+	}
+
+	msgBus := bus.NewMessageBus()
+	provider := &toolFeedbackProvider{filePath: heartbeatFile}
+	al := NewAgentLoop(cfg, msgBus, provider)
+
+	response, err := al.processMessage(context.Background(), bus.InboundMessage{
+		Channel:  "telegram",
+		SenderID: "user-1",
+		ChatID:   "chat-1",
+		Content:  "check tool feedback",
+	})
+	if err != nil {
+		t.Fatalf("processMessage() error = %v", err)
+	}
+	if response != "HEARTBEAT_OK" {
+		t.Fatalf("processMessage() response = %q, want %q", response, "HEARTBEAT_OK")
+	}
+
+	select {
+	case outbound := <-msgBus.OutboundChan():
+		if outbound.Channel != "telegram" {
+			t.Fatalf("tool feedback channel = %q, want %q", outbound.Channel, "telegram")
+		}
+		if outbound.ChatID != "chat-1" {
+			t.Fatalf("tool feedback chatID = %q, want %q", outbound.ChatID, "chat-1")
+		}
+		if !strings.Contains(outbound.Content, "`read_file`") {
+			t.Fatalf("tool feedback content = %q, want read_file preview", outbound.Content)
+		}
+	case <-time.After(2 * time.Second):
+		t.Fatal("expected outbound tool feedback for regular messages")
+	}
+}
+
 func TestResolveMediaRefs_ResolvesToBase64(t *testing.T) {
 	store := media.NewFileMediaStore()
 	dir := t.TempDir()
@ -2131,3 +2796,111 @@ func TestFilterClientWebSearch_EmptyInput(t *testing.T) {
 		t.Fatalf("len(result) = %d, want 0", len(result))
 	}
 }
+
+type overflowProvider struct {
+	calls        int
+	lastMessages []providers.Message
+	chatFunc     func(ctx context.Context, messages []providers.Message, tools []providers.ToolDefinition, model string, opts map[string]any) (*providers.LLMResponse, error)
+}
+
+func (p *overflowProvider) Chat(
+	ctx context.Context,
+	messages []providers.Message,
+	tools []providers.ToolDefinition,
+	model string,
+	opts map[string]any,
+) (*providers.LLMResponse, error) {
+	p.calls++
+	p.lastMessages = append([]providers.Message(nil), messages...)
+
+	if p.chatFunc != nil {
+		return p.chatFunc(ctx, messages, tools, model, opts)
+	}
+
+	if p.calls == 1 {
+		return nil, errors.New("context_window_exceeded")
+	}
+
+	return &providers.LLMResponse{
+		Content: "Recovered from overflow",
+	}, nil
+}
+
+func (p *overflowProvider) GetDefaultModel() string {
+	return "test-model"
+}
+
+func TestProcessMessage_ContextOverflowRecovery(t *testing.T) {
+	al, cfg, _, _, cleanup := newTestAgentLoop(t)
+	defer cleanup()
+	_ = cfg
+
+	provider := &overflowProvider{}
+	al.registry = NewAgentRegistry(al.cfg, provider)
+
+	sessionKey := "agent:main:test-session"
+	agent := al.GetRegistry().GetDefaultAgent()
+
+	for i := 0; i < 5; i++ {
+		agent.Sessions.AddFullMessage(sessionKey, providers.Message{Role: "user", Content: "heavy message"})
+		agent.Sessions.AddFullMessage(sessionKey, providers.Message{Role: "assistant", Content: "response"})
+	}
+
+	response, err := al.processMessage(context.Background(), bus.InboundMessage{
+		Channel:    "test",
+		ChatID:     "chat1",
+		SenderID:   "user1",
+		SessionKey: "test-session",
+		Content:    "trigger recovery",
+	})
+	if err != nil {
+		t.Fatalf("processMessage() error = %v", err)
+	}
+	if response != "Recovered from overflow" {
+		t.Fatalf("response = %q, want %q", response, "Recovered from overflow")
+	}
+
+	if provider.calls != 2 {
+		t.Fatalf("expected 2 calls, got %d", provider.calls)
+	}
+}
+
+func TestProcessMessage_ContextOverflow_AnthropicStyle(t *testing.T) {
+	al, cfg, _, _, cleanup := newTestAgentLoop(t)
+	defer cleanup()
+	_ = cfg
+
+	provider := &overflowProvider{}
+	al.registry = NewAgentRegistry(al.cfg, provider)
+
+	recoveryMsg := "error: status 400: context_window_exceeded"
+
+	provider.chatFunc = func(
+		ctx context.Context,
+		messages []providers.Message,
+		tools []providers.ToolDefinition,
+		model string,
+		opts map[string]any,
+	) (*providers.LLMResponse, error) {
+		if provider.calls == 1 {
+			return nil, errors.New(recoveryMsg)
+		}
+		return &providers.LLMResponse{Content: "Anthropic recovery success"}, nil
+	}
+
+	response, err := al.processMessage(context.Background(), bus.InboundMessage{
+		Channel:  "test",
+		ChatID:   "chat1",
+		SenderID: "user1",
+		Content:  "hello",
+	})
+	if err != nil {
+		t.Fatalf("processMessage() error = %v", err)
+	}
+	if !strings.Contains(response, "Anthropic recovery success") {
+		t.Fatalf("response = %q, want success message", response)
+	}
+	if provider.calls != 2 {
+		t.Fatalf("expected 2 calls for retry, got %d", provider.calls)
+	}
+}
--- a/pkg/channels/README.md
+++ b/pkg/channels/README.md
@ -1255,8 +1255,7 @@ make test                                       # Full test suite
 | `pkg/channels/onebot/` | `"onebot"` | ReactionCapable, MediaSender |
 | `pkg/channels/dingtalk/` | `"dingtalk"` | — |
 | `pkg/channels/feishu/` | `"feishu"` | — (architecture-specific build tags: `feishu_32.go` / `feishu_64.go`) |
-| `pkg/channels/wecom/` | `"wecom"` | WebhookHandler, HealthChecker |
-| `pkg/channels/wecom/` | `"wecom_app"` | MediaSender, WebhookHandler, HealthChecker |
+| `pkg/channels/wecom/` | `"wecom"` | MediaSender |
 | `pkg/channels/qq/` | `"qq"` | — |
 | `pkg/channels/whatsapp/` | `"whatsapp"` | — (Bridge mode) |
 | `pkg/channels/whatsapp_native/` | `"whatsapp_native"` | — (Native whatsmeow mode) |
@ -1371,7 +1370,7 @@ agentLoop.Stop()               // Stop Agent

 2. **Feishu architecture-specific compilation**: The Feishu channel uses build tags to distinguish 32-bit and 64-bit architectures (`feishu_32.go` / `feishu_64.go`). Feishu uses the SDK's WebSocket mode (not HTTP webhook), so it does not implement `WebhookHandler`.

-3. **WeCom has two factories**: `"wecom"` (Bot mode, webhook only) and `"wecom_app"` (App mode, supports MediaSender) are registered separately. Both implement `WebhookHandler` and `HealthChecker`.
+3. **WeCom is now a single channel**: `"wecom"` is implemented as a WebSocket-based AI Bot channel with route persistence. Access control uses the shared channel allowlist mechanism. It no longer exposes the legacy webhook/app split.

 4. **Pico Protocol**: `pkg/channels/pico/` implements a custom PicoClaw native protocol channel that receives messages via WebSocket webhook (`/pico/ws`).

@ -1381,4 +1380,4 @@ agentLoop.Stop()               // Stop Agent

 7. **PlaceholderConfig vs implementation**: `PlaceholderConfig` appears in 6 channel configs (Telegram, Discord, Slack, LINE, OneBot, Pico), but only channels that implement both `PlaceholderCapable` + `MessageEditor` (Telegram, Discord, Pico) can actually use placeholder message editing. The rest are reserved fields.

-8. **ReasoningChannelID**: Most channel configs include a `reasoning_channel_id` field to route LLM reasoning/thinking output to a designated channel (WhatsApp, Telegram, Feishu, Discord, MaixCam, QQ, DingTalk, Slack, LINE, OneBot, WeCom, WeComApp). Note: `PicoConfig` does not currently expose this field. `BaseChannel` exposes this via the `WithReasoningChannelID` option and `ReasoningChannelID()` method.
+8. **ReasoningChannelID**: Most channel configs include a `reasoning_channel_id` field to route LLM reasoning/thinking output to a designated channel (WhatsApp, Telegram, Feishu, Discord, MaixCam, QQ, DingTalk, Slack, LINE, OneBot, WeCom). Note: `PicoConfig` does not currently expose this field. `BaseChannel` exposes this via the `WithReasoningChannelID` option and `ReasoningChannelID()` method.
--- a/pkg/channels/README.zh.md
+++ b/pkg/channels/README.zh.md
@ -1254,8 +1254,7 @@ make test                                       # 全量测试
 | `pkg/channels/onebot/` | `"onebot"` | ReactionCapable, MediaSender |
 | `pkg/channels/dingtalk/` | `"dingtalk"` | — |
 | `pkg/channels/feishu/` | `"feishu"` | — (架构特定 build tags: `feishu_32.go` / `feishu_64.go`) |
-| `pkg/channels/wecom/` | `"wecom"` | WebhookHandler, HealthChecker |
-| `pkg/channels/wecom/` | `"wecom_app"` | MediaSender, WebhookHandler, HealthChecker |
+| `pkg/channels/wecom/` | `"wecom"` | MediaSender |
 | `pkg/channels/qq/` | `"qq"` | — |
 | `pkg/channels/whatsapp/` | `"whatsapp"` | — (Bridge 模式) |
 | `pkg/channels/whatsapp_native/` | `"whatsapp_native"` | — (原生 whatsmeow 模式) |
@ -1370,7 +1369,7 @@ agentLoop.Stop()               // 停止 Agent

 2. **Feishu 架构特定编译**：Feishu channel 使用 build tags 区分 32 位和 64 位架构（`feishu_32.go` / `feishu_64.go`）。Feishu 使用 SDK 的 WebSocket 模式（非 HTTP webhook），因此不实现 `WebhookHandler`。

-3. **WeCom 有两个工厂**：`"wecom"`（Bot 模式，纯 webhook）和 `"wecom_app"`（应用模式，支持 MediaSender）分别注册。两者都实现了 `WebhookHandler` 和 `HealthChecker`。
+3. **WeCom 现在只有一个 channel**：`"wecom"` 采用 WebSocket AI Bot 实现，带路由持久化；访问控制走统一的 channel 白名单机制，不再保留旧的 webhook/app 双分支。

 4. **Pico Protocol**：`pkg/channels/pico/` 实现了一个自定义的 PicoClaw 原生协议 channel，通过 WebSocket webhook (`/pico/ws`) 接收消息。

@ -1380,4 +1379,4 @@ agentLoop.Stop()               // 停止 Agent

 7. **PlaceholderConfig 的配置与实现**：`PlaceholderConfig` 出现在 6 个 channel config 中（Telegram、Discord、Slack、LINE、OneBot、Pico），但只有实现了 `PlaceholderCapable` + `MessageEditor` 的 channel（Telegram、Discord、Pico）能真正使用占位消息编辑功能。其余 channel 的 `PlaceholderConfig` 为预留字段。

-8. **ReasoningChannelID**：大多数 channel config 都包含 `reasoning_channel_id` 字段，用于将 LLM 的思维链（reasoning/thinking）路由到指定 channel（WhatsApp、Telegram、Feishu、Discord、MaixCam、QQ、DingTalk、Slack、LINE、OneBot、WeCom、WeComApp）。注意：`PicoConfig` 目前不包含该字段。`BaseChannel` 通过 `WithReasoningChannelID` 选项和 `ReasoningChannelID()` 方法暴露此配置。
+8. **ReasoningChannelID**：大多数 channel config 都包含 `reasoning_channel_id` 字段，用于将 LLM 的思维链（reasoning/thinking）路由到指定 channel（WhatsApp、Telegram、Feishu、Discord、MaixCam、QQ、DingTalk、Slack、LINE、OneBot、WeCom）。注意：`PicoConfig` 目前不包含该字段。`BaseChannel` 通过 `WithReasoningChannelID` 选项和 `ReasoningChannelID()` 方法暴露此配置。
--- a/pkg/channels/dingtalk/dingtalk.go
+++ b/pkg/channels/dingtalk/dingtalk.go
@ -36,7 +36,7 @@ type DingTalkChannel struct {

 // NewDingTalkChannel creates a new DingTalk channel instance
 func NewDingTalkChannel(cfg config.DingTalkConfig, messageBus *bus.MessageBus) (*DingTalkChannel, error) {
-	if cfg.ClientID == "" || cfg.ClientSecret() == "" {
+	if cfg.ClientID == "" || cfg.ClientSecret.String() == "" {
 		return nil, fmt.Errorf("dingtalk client_id and client_secret are required")
 	}

@ -53,7 +53,7 @@ func NewDingTalkChannel(cfg config.DingTalkConfig, messageBus *bus.MessageBus) (
 		BaseChannel:  base,
 		config:       cfg,
 		clientID:     cfg.ClientID,
-		clientSecret: cfg.ClientSecret(),
+		clientSecret: cfg.ClientSecret.String(),
 	}, nil
 }

--- a/pkg/channels/discord/discord.go
+++ b/pkg/channels/discord/discord.go
@ -53,7 +53,7 @@ func NewDiscordChannel(cfg config.DiscordConfig, bus *bus.MessageBus) (*DiscordC
 			discordgo.LogDebug:         logger.DEBUG,
 		}).Log

-	session, err := discordgo.New("Bot " + cfg.Token())
+	session, err := discordgo.New("Bot " + cfg.Token.String())
 	if err != nil {
 		return nil, fmt.Errorf("failed to create discord session: %w", err)
 	}
@ -254,10 +254,7 @@ func (c *DiscordChannel) SendPlaceholder(ctx context.Context, chatID string) (st
 		return "", nil
 	}

-	text := c.config.Placeholder.Text
-	if text == "" {
-		text = "Thinking... 💭"
-	}
+	text := c.config.Placeholder.GetRandomText()

 	msg, err := c.session.ChannelMessageSend(chatID, text)
 	if err != nil {
--- a/pkg/channels/feishu/feishu_64.go
+++ b/pkg/channels/feishu/feishu_64.go
@ -63,14 +63,14 @@ func NewFeishuChannel(cfg config.FeishuConfig, bus *bus.MessageBus) (*FeishuChan
 		BaseChannel: base,
 		config:      cfg,
 		tokenCache:  tc,
-		client:      lark.NewClient(cfg.AppID, cfg.AppSecret(), opts...),
+		client:      lark.NewClient(cfg.AppID, cfg.AppSecret.String(), opts...),
 	}
 	ch.SetOwner(ch)
 	return ch, nil
 }

 func (c *FeishuChannel) Start(ctx context.Context) error {
-	if c.config.AppID == "" || c.config.AppSecret() == "" {
+	if c.config.AppID == "" || c.config.AppSecret.String() == "" {
 		return fmt.Errorf("feishu app_id or app_secret is empty")
 	}

@ -81,7 +81,7 @@ func (c *FeishuChannel) Start(ctx context.Context) error {
 		})
 	}

-	dispatcher := larkdispatcher.NewEventDispatcher(c.config.VerificationToken(), c.config.EncryptKey()).
+	dispatcher := larkdispatcher.NewEventDispatcher(c.config.VerificationToken.String(), c.config.EncryptKey.String()).
 		OnP2MessageReceiveV1(c.handleMessageReceive)

 	runCtx, cancel := context.WithCancel(ctx)
@ -94,7 +94,7 @@ func (c *FeishuChannel) Start(ctx context.Context) error {
 	}
 	c.wsClient = larkws.NewClient(
 		c.config.AppID,
-		c.config.AppSecret(),
+		c.config.AppSecret.String(),
 		larkws.WithEventHandler(dispatcher),
 		larkws.WithDomain(domain),
 	)
@ -211,10 +211,7 @@ func (c *FeishuChannel) SendPlaceholder(ctx context.Context, chatID string) (str
 		return "", nil
 	}

-	text := c.config.Placeholder.Text
-	if text == "" {
-		text = "Thinking..."
-	}
+	text := c.config.Placeholder.GetRandomText()

 	cardContent, err := buildMarkdownCard(text)
 	if err != nil {
--- a/pkg/channels/irc/handler.go
+++ b/pkg/channels/irc/handler.go
@ -17,8 +17,8 @@ import (
 // onConnect is called after a successful connection (and on reconnect).
 func (c *IRCChannel) onConnect(conn *ircevent.Connection) {
 	// NickServ auth (only if SASL is not configured)
-	if c.config.NickServPassword() != "" && c.config.SASLUser == "" {
-		conn.Privmsg("NickServ", "IDENTIFY "+c.config.NickServPassword())
+	if c.config.NickServPassword.String() != "" && c.config.SASLUser == "" {
+		conn.Privmsg("NickServ", "IDENTIFY "+c.config.NickServPassword.String())
 	}

 	// Join configured channels
--- a/pkg/channels/irc/irc.go
+++ b/pkg/channels/irc/irc.go
@ -68,7 +68,7 @@ func (c *IRCChannel) Start(ctx context.Context) error {
 		Nick:        c.config.Nick,
 		User:        user,
 		RealName:    realName,
-		Password:    c.config.Password(),
+		Password:    c.config.Password.String(),
 		UseTLS:      c.config.TLS,
 		RequestCaps: caps,
 		QuitMessage: "Goodbye",
@ -83,9 +83,9 @@ func (c *IRCChannel) Start(ctx context.Context) error {
 	}

 	// SASL auth (takes priority over NickServ)
-	if c.config.SASLUser != "" && c.config.SASLPassword() != "" {
+	if c.config.SASLUser != "" && c.config.SASLPassword.String() != "" {
 		conn.SASLLogin = c.config.SASLUser
-		conn.SASLPassword = c.config.SASLPassword()
+		conn.SASLPassword = c.config.SASLPassword.String()
 	}

 	// Register event handlers
--- a/pkg/channels/line/line.go
+++ b/pkg/channels/line/line.go
@ -62,7 +62,7 @@ type LINEChannel struct {

 // NewLINEChannel creates a new LINE channel instance.
 func NewLINEChannel(cfg config.LINEConfig, messageBus *bus.MessageBus) (*LINEChannel, error) {
-	if cfg.ChannelSecret() == "" || cfg.ChannelAccessToken() == "" {
+	if cfg.ChannelSecret.String() == "" || cfg.ChannelAccessToken.String() == "" {
 		return nil, fmt.Errorf("line channel_secret and channel_access_token are required")
 	}

@ -110,7 +110,7 @@ func (c *LINEChannel) fetchBotInfo() error {
 	if err != nil {
 		return err
 	}
-	req.Header.Set("Authorization", "Bearer "+c.config.ChannelAccessToken())
+	req.Header.Set("Authorization", "Bearer "+c.config.ChannelAccessToken.String())

 	resp, err := c.infoClient.Do(req)
 	if err != nil {
@ -216,7 +216,7 @@ func (c *LINEChannel) verifySignature(body []byte, signature string) bool {
 		return false
 	}

-	mac := hmac.New(sha256.New, []byte(c.config.ChannelSecret()))
+	mac := hmac.New(sha256.New, []byte(c.config.ChannelSecret.String()))
 	mac.Write(body)
 	expected := base64.StdEncoding.EncodeToString(mac.Sum(nil))

@ -655,7 +655,7 @@ func (c *LINEChannel) callAPI(ctx context.Context, endpoint string, payload any)
 	}

 	req.Header.Set("Content-Type", "application/json")
-	req.Header.Set("Authorization", "Bearer "+c.config.ChannelAccessToken())
+	req.Header.Set("Authorization", "Bearer "+c.config.ChannelAccessToken.String())

 	resp, err := c.apiClient.Do(req)
 	if err != nil {
@ -680,7 +680,7 @@ func (c *LINEChannel) downloadContent(messageID, filename string) string {
 	return utils.DownloadFile(url, filename, utils.DownloadOptions{
 		LoggerPrefix: "line",
 		ExtraHeaders: map[string]string{
-			"Authorization": "Bearer " + c.config.ChannelAccessToken(),
+			"Authorization": "Bearer " + c.config.ChannelAccessToken.String(),
 		},
 	})
 }
--- a/pkg/channels/manager.go
+++ b/pkg/channels/manager.go
@ -206,6 +206,40 @@ func (m *Manager) preSend(ctx context.Context, name string, msg bus.OutboundMess
 	return false
 }

+// preSendMedia handles typing stop, reaction undo, and placeholder cleanup
+// before sending media attachments. Unlike preSend for text messages, media
+// delivery never edits the placeholder because there is no text payload to
+// replace it with; it only attempts to delete the placeholder when possible.
+func (m *Manager) preSendMedia(ctx context.Context, name string, msg bus.OutboundMediaMessage, ch Channel) {
+	key := name + ":" + msg.ChatID
+
+	// 1. Stop typing
+	if v, loaded := m.typingStops.LoadAndDelete(key); loaded {
+		if entry, ok := v.(typingEntry); ok {
+			entry.stop() // idempotent, safe
+		}
+	}
+
+	// 2. Undo reaction
+	if v, loaded := m.reactionUndos.LoadAndDelete(key); loaded {
+		if entry, ok := v.(reactionEntry); ok {
+			entry.undo() // idempotent, safe
+		}
+	}
+
+	// 3. Clear any finalized stream marker for this chat before media delivery.
+	m.streamActive.LoadAndDelete(key)
+
+	// 4. Delete placeholder if present.
+	if v, loaded := m.placeholders.LoadAndDelete(key); loaded {
+		if entry, ok := v.(placeholderEntry); ok && entry.id != "" {
+			if deleter, ok := ch.(MessageDeleter); ok {
+				deleter.DeleteMessage(ctx, msg.ChatID, entry.id) // best effort
+			}
+		}
+	}
+}
+
 func NewManager(cfg *config.Config, messageBus *bus.MessageBus, store media.MediaStore) (*Manager, error) {
 	m := &Manager{
 		channels:      make(map[string]Channel),
@ -319,7 +353,7 @@ func (m *Manager) initChannel(name, displayName string) {
 func (m *Manager) initChannels(channels *config.ChannelsConfig) error {
 	logger.InfoC("channels", "Initializing channel manager")

-	if channels.Telegram.Enabled && channels.Telegram.Token() != "" {
+	if channels.Telegram.Enabled && channels.Telegram.Token.String() != "" {
 		m.initChannel("telegram", "Telegram")
 	}

@ -336,7 +370,7 @@ func (m *Manager) initChannels(channels *config.ChannelsConfig) error {
 		m.initChannel("feishu", "Feishu")
 	}

-	if channels.Discord.Enabled && channels.Discord.Token() != "" {
+	if channels.Discord.Enabled && channels.Discord.Token.String() != "" {
 		m.initChannel("discord", "Discord")
 	}

@ -352,18 +386,18 @@ func (m *Manager) initChannels(channels *config.ChannelsConfig) error {
 		m.initChannel("dingtalk", "DingTalk")
 	}

-	if channels.Slack.Enabled && channels.Slack.BotToken() != "" {
+	if channels.Slack.Enabled && channels.Slack.BotToken.String() != "" {
 		m.initChannel("slack", "Slack")
 	}

 	if channels.Matrix.Enabled &&
 		m.config.Channels.Matrix.Homeserver != "" &&
 		m.config.Channels.Matrix.UserID != "" &&
-		m.config.Channels.Matrix.AccessToken() != "" {
+		m.config.Channels.Matrix.AccessToken.String() != "" {
 		m.initChannel("matrix", "Matrix")
 	}

-	if channels.LINE.Enabled && channels.LINE.ChannelAccessToken() != "" {
+	if channels.LINE.Enabled && channels.LINE.ChannelAccessToken.String() != "" {
 		m.initChannel("line", "LINE")
 	}

@ -371,24 +405,15 @@ func (m *Manager) initChannels(channels *config.ChannelsConfig) error {
 		m.initChannel("onebot", "OneBot")
 	}

-	if channels.WeCom.Enabled && channels.WeCom.Token() != "" {
+	if channels.WeCom.Enabled && channels.WeCom.BotID != "" && channels.WeCom.Secret.String() != "" {
 		m.initChannel("wecom", "WeCom")
 	}

-	if channels.WeComAIBot.Enabled && (channels.WeComAIBot.Token() != "" ||
-		(channels.WeComAIBot.Secret() != "" && channels.WeComAIBot.BotID != "")) {
-		m.initChannel("wecom_aibot", "WeCom AI Bot")
-	}
-
-	if channels.WeComApp.Enabled && channels.WeComApp.CorpID != "" {
-		m.initChannel("wecom_app", "WeCom App")
-	}
-
-	if channels.Weixin.Enabled && channels.Weixin.Token() != "" {
+	if channels.Weixin.Enabled && channels.Weixin.Token.String() != "" {
 		m.initChannel("weixin", "Weixin")
 	}

-	if channels.Pico.Enabled && channels.Pico.Token() != "" {
+	if channels.Pico.Enabled && channels.Pico.Token.String() != "" {
 		m.initChannel("pico", "Pico")
 	}

@ -583,8 +608,10 @@ func newChannelWorker(name string, ch Channel) *channelWorker {
 	}
 }

-// runWorker processes outbound messages for a single channel, splitting
-// messages that exceed the channel's maximum message length.
+// runWorker processes outbound messages for a single channel.
+// Message processing follows this order:
+//  1. SplitByMarker (if enabled in config) - LLM semantic marker-based splitting
+//  2. SplitMessage - channel-specific length-based splitting (MaxMessageLength)
 func (m *Manager) runWorker(ctx context.Context, name string, w *channelWorker) {
 	defer close(w.done)
 	for {
@ -597,15 +624,29 @@ func (m *Manager) runWorker(ctx context.Context, name string, w *channelWorker)
 			if mlp, ok := w.ch.(MessageLengthProvider); ok {
 				maxLen = mlp.MaxMessageLength()
 			}
-			if maxLen > 0 && len([]rune(msg.Content)) > maxLen {
-				chunks := SplitMessage(msg.Content, maxLen)
-				for _, chunk := range chunks {
-					chunkMsg := msg
-					chunkMsg.Content = chunk
-					m.sendWithRetry(ctx, name, w, chunkMsg)
+
+			// Collect all message chunks to send
+			var chunks []string
+
+			// Step 1: Try marker-based splitting if enabled
+			if m.config != nil && m.config.Agents.Defaults.SplitOnMarker {
+				if markerChunks := SplitByMarker(msg.Content); len(markerChunks) > 1 {
+					for _, chunk := range markerChunks {
+						chunks = append(chunks, splitByLength(chunk, maxLen)...)
+					}
 				}
-			} else {
-				m.sendWithRetry(ctx, name, w, msg)
+			}
+
+			// Step 2: Fallback to length-based splitting if no chunks from marker
+			if len(chunks) == 0 {
+				chunks = splitByLength(msg.Content, maxLen)
+			}
+
+			// Step 3: Send all chunks
+			for _, chunk := range chunks {
+				chunkMsg := msg
+				chunkMsg.Content = chunk
+				m.sendWithRetry(ctx, name, w, chunkMsg)
 			}
 		case <-ctx.Done():
 			return
@ -613,6 +654,14 @@ func (m *Manager) runWorker(ctx context.Context, name string, w *channelWorker)
 	}
 }

+// splitByLength splits content by maxLen if needed, otherwise returns single chunk.
+func splitByLength(content string, maxLen int) []string {
+	if maxLen > 0 && len([]rune(content)) > maxLen {
+		return SplitMessage(content, maxLen)
+	}
+	return []string{content}
+}
+
 // sendWithRetry sends a message through the channel with rate limiting and
 // retry logic. It classifies errors to determine the retry strategy:
 //   - ErrNotRunning / ErrSendFailed: permanent, no retry
@ -774,7 +823,7 @@ func (m *Manager) runMediaWorker(ctx context.Context, name string, w *channelWor
 			if !ok {
 				return
 			}
-			m.sendMediaWithRetry(ctx, name, w, msg)
+			_ = m.sendMediaWithRetry(ctx, name, w, msg)
 		case <-ctx.Done():
 			return
 		}
@ -782,26 +831,37 @@ func (m *Manager) runMediaWorker(ctx context.Context, name string, w *channelWor
 }

 // sendMediaWithRetry sends a media message through the channel with rate limiting and
-// retry logic. If the channel does not implement MediaSender, it silently skips.
-func (m *Manager) sendMediaWithRetry(ctx context.Context, name string, w *channelWorker, msg bus.OutboundMediaMessage) {
+// retry logic. It returns nil on success, or the last error after retries,
+// including when the channel does not support MediaSender.
+func (m *Manager) sendMediaWithRetry(
+	ctx context.Context,
+	name string,
+	w *channelWorker,
+	msg bus.OutboundMediaMessage,
+) error {
 	ms, ok := w.ch.(MediaSender)
 	if !ok {
-		logger.DebugCF("channels", "Channel does not support MediaSender, skipping media", map[string]any{
+		err := fmt.Errorf("channel %q does not support media sending", name)
+		logger.WarnCF("channels", "Channel does not support MediaSender", map[string]any{
 			"channel": name,
+			"error":   err.Error(),
 		})
-		return
+		return err
 	}

 	// Rate limit: wait for token
 	if err := w.limiter.Wait(ctx); err != nil {
-		return
+		return err
 	}

+	// Pre-send: stop typing and clean up any placeholder before sending media.
+	m.preSendMedia(ctx, name, msg, w.ch)
+
 	var lastErr error
 	for attempt := 0; attempt <= maxRetries; attempt++ {
 		lastErr = ms.SendMedia(ctx, msg)
 		if lastErr == nil {
-			return
+			return nil
 		}

 		// Permanent failures — don't retry
@ -820,7 +880,7 @@ func (m *Manager) sendMediaWithRetry(ctx context.Context, name string, w *channe
 			case <-time.After(rateLimitDelay):
 				continue
 			case <-ctx.Done():
-				return
+				return ctx.Err()
 			}
 		}

@ -829,7 +889,7 @@ func (m *Manager) sendMediaWithRetry(ctx context.Context, name string, w *channe
 		select {
 		case <-time.After(backoff):
 		case <-ctx.Done():
-			return
+			return ctx.Err()
 		}
 	}

@ -840,6 +900,7 @@ func (m *Manager) sendMediaWithRetry(ctx context.Context, name string, w *channe
 		"error":   lastErr.Error(),
 		"retries": maxRetries,
 	})
+	return lastErr
 }

 // runTTLJanitor periodically scans the typingStops and placeholders maps
@ -1032,6 +1093,26 @@ func (m *Manager) SendMessage(ctx context.Context, msg bus.OutboundMessage) erro
 	return nil
 }

+// SendMedia sends outbound media synchronously through the channel worker's
+// rate limiter and retry logic. It blocks until the media is delivered (or all
+// retries are exhausted), which preserves ordering when later agent behavior
+// depends on actual media delivery.
+func (m *Manager) SendMedia(ctx context.Context, msg bus.OutboundMediaMessage) error {
+	m.mu.RLock()
+	_, exists := m.channels[msg.Channel]
+	w, wExists := m.workers[msg.Channel]
+	m.mu.RUnlock()
+
+	if !exists {
+		return fmt.Errorf("channel %s not found", msg.Channel)
+	}
+	if !wExists || w == nil {
+		return fmt.Errorf("channel %s has no active worker", msg.Channel)
+	}
+
+	return m.sendMediaWithRetry(ctx, msg.Channel, w, msg)
+}
+
 func (m *Manager) SendToChannel(ctx context.Context, channelName, chatID, content string) error {
 	m.mu.RLock()
 	_, exists := m.channels[channelName]
--- a/pkg/channels/manager_channel.go
+++ b/pkg/channels/manager_channel.go
@ -33,43 +33,35 @@ func toChannelHashes(cfg *config.Config) map[string]string {
 func hiddenValues(key string, value map[string]any, ch config.ChannelsConfig) {
 	switch key {
 	case "pico":
-		value["token"] = ch.Pico.Token()
+		value["token"] = ch.Pico.Token.String()
 	case "telegram":
-		value["token"] = ch.Telegram.Token()
+		value["token"] = ch.Telegram.Token.String()
 	case "discord":
-		value["token"] = ch.Discord.Token()
+		value["token"] = ch.Discord.Token.String()
 	case "slack":
-		value["bot_token"] = ch.Slack.BotToken()
-		value["app_token"] = ch.Slack.AppToken()
+		value["bot_token"] = ch.Slack.BotToken.String()
+		value["app_token"] = ch.Slack.AppToken.String()
 	case "matrix":
-		value["token"] = ch.Matrix.AccessToken()
+		value["token"] = ch.Matrix.AccessToken.String()
 	case "onebot":
-		value["token"] = ch.OneBot.AccessToken()
+		value["token"] = ch.OneBot.AccessToken.String()
 	case "line":
-		value["token"] = ch.LINE.ChannelAccessToken()
-		value["secret"] = ch.LINE.ChannelSecret()
+		value["token"] = ch.LINE.ChannelAccessToken.String()
+		value["secret"] = ch.LINE.ChannelSecret.String()
 	case "wecom":
-		value["token"] = ch.WeCom.Token()
-		value["key"] = ch.WeCom.EncodingAESKey()
-	case "wecom_app":
-		value["token"] = ch.WeComApp.Token()
-		value["secret"] = ch.WeComApp.CorpSecret()
-	case "wecom_aibot":
-		value["token"] = ch.WeComAIBot.Token()
-		value["key"] = ch.WeComAIBot.EncodingAESKey()
-		value["secret"] = ch.WeComAIBot.Secret()
+		value["secret"] = ch.WeCom.Secret.String()
 	case "dingtalk":
-		value["secret"] = ch.QQ.AppSecret()
+		value["secret"] = ch.DingTalk.ClientSecret.String()
 	case "qq":
-		value["secret"] = ch.DingTalk.ClientSecret()
+		value["secret"] = ch.QQ.AppSecret.String()
 	case "irc":
-		value["password"] = ch.IRC.Password()
-		value["serv_password"] = ch.IRC.NickServPassword()
-		value["sasl_password"] = ch.IRC.SASLPassword()
+		value["password"] = ch.IRC.Password.String()
+		value["serv_password"] = ch.IRC.NickServPassword.String()
+		value["sasl_password"] = ch.IRC.SASLPassword.String()
 	case "feishu":
-		value["app_secret"] = ch.Feishu.AppSecret()
-		value["encrypt_key"] = ch.Feishu.EncryptKey()
-		value["verification_token"] = ch.Feishu.VerificationToken()
+		value["app_secret"] = ch.Feishu.AppSecret.String()
+		value["encrypt_key"] = ch.Feishu.EncryptKey.String()
+		value["verification_token"] = ch.Feishu.VerificationToken.String()
 	}
 }

@ -133,54 +125,45 @@ func toChannelConfig(cfg *config.Config, list []string) (*config.ChannelsConfig,

 func updateKeys(newcfg, old *config.ChannelsConfig) {
 	if newcfg.Pico.Enabled {
-		newcfg.Pico.SetToken(old.Pico.Token())
+		newcfg.Pico.Token = old.Pico.Token
 	}
 	if newcfg.Telegram.Enabled {
-		newcfg.Telegram.SetToken(old.Telegram.Token())
+		newcfg.Telegram.Token = old.Telegram.Token
 	}
 	if newcfg.Discord.Enabled {
-		newcfg.Discord.SetToken(old.Discord.Token())
+		newcfg.Discord.Token = old.Discord.Token
 	}
 	if newcfg.Slack.Enabled {
-		newcfg.Slack.SetBotToken(old.Slack.BotToken())
-		newcfg.Slack.SetAppToken(old.Slack.AppToken())
+		newcfg.Slack.BotToken = old.Slack.BotToken
+		newcfg.Slack.AppToken = old.Slack.AppToken
 	}
 	if newcfg.Matrix.Enabled {
-		newcfg.Matrix.SetAccessToken(old.Matrix.AccessToken())
+		newcfg.Matrix.AccessToken = old.Matrix.AccessToken
 	}
 	if newcfg.OneBot.Enabled {
-		newcfg.OneBot.SetAccessToken(old.OneBot.AccessToken())
+		newcfg.OneBot.AccessToken = old.OneBot.AccessToken
 	}
 	if newcfg.LINE.Enabled {
-		newcfg.LINE.SetChannelAccessToken(old.LINE.ChannelAccessToken())
-		newcfg.LINE.SetChannelSecret(old.LINE.ChannelSecret())
+		newcfg.LINE.ChannelAccessToken = old.LINE.ChannelAccessToken
+		newcfg.LINE.ChannelSecret = old.LINE.ChannelSecret
 	}
 	if newcfg.WeCom.Enabled {
-		newcfg.WeCom.SetToken(old.WeCom.Token())
-		newcfg.WeCom.SetEncodingAESKey(old.WeCom.EncodingAESKey())
-	}
-	if newcfg.WeComApp.Enabled {
-		newcfg.WeComApp.SetToken(old.WeComApp.Token())
-		newcfg.WeComApp.SetCorpSecret(old.WeComApp.CorpSecret())
-	}
-	if newcfg.WeComAIBot.Enabled {
-		newcfg.WeComAIBot.SetToken(old.WeComAIBot.Token())
-		newcfg.WeComAIBot.SetEncodingAESKey(old.WeComAIBot.EncodingAESKey())
+		newcfg.WeCom.Secret = old.WeCom.Secret
 	}
 	if newcfg.DingTalk.Enabled {
-		newcfg.DingTalk.SetClientSecret(old.DingTalk.ClientSecret())
+		newcfg.DingTalk.ClientSecret = old.DingTalk.ClientSecret
 	}
 	if newcfg.QQ.Enabled {
-		newcfg.QQ.SetAppSecret(old.QQ.AppSecret())
+		newcfg.QQ.AppSecret = old.QQ.AppSecret
 	}
 	if newcfg.IRC.Enabled {
-		newcfg.IRC.SetPassword(old.IRC.Password())
-		newcfg.IRC.SetNickServPassword(old.IRC.NickServPassword())
-		newcfg.IRC.SetSASLPassword(old.IRC.SASLPassword())
+		newcfg.IRC.Password = old.IRC.Password
+		newcfg.IRC.NickServPassword = old.IRC.NickServPassword
+		newcfg.IRC.SASLPassword = old.IRC.SASLPassword
 	}
 	if newcfg.Feishu.Enabled {
-		newcfg.Feishu.SetAppSecret(old.Feishu.AppSecret())
-		newcfg.Feishu.SetEncryptKey(old.Feishu.EncryptKey())
-		newcfg.Feishu.SetVerificationToken(old.Feishu.VerificationToken())
+		newcfg.Feishu.AppSecret = old.Feishu.AppSecret
+		newcfg.Feishu.EncryptKey = old.Feishu.EncryptKey
+		newcfg.Feishu.VerificationToken = old.Feishu.VerificationToken
 	}
 }
--- a/pkg/channels/manager_channel_test.go
+++ b/pkg/channels/manager_channel_test.go
@ -41,11 +41,11 @@ func TestToChannelHashes(t *testing.T) {
 	cc, err := toChannelConfig(cfg3, added)
 	assert.NoError(t, err)
 	logger.Debugf("cc: %#v", cc.Telegram)
-	assert.Equal(t, "114314", cc.Telegram.Token())
+	assert.Equal(t, "114314", cc.Telegram.Token.String())
 	assert.Equal(t, true, cc.Telegram.Enabled)
 	cc, err = toChannelConfig(cfg2, added)
 	assert.NoError(t, err)
 	logger.Debugf("cc: %#v", cc.Telegram)
-	assert.Equal(t, "", cc.Telegram.Token())
+	assert.Equal(t, "", cc.Telegram.Token.String())
 	assert.Equal(t, false, cc.Telegram.Enabled)
 }
--- a/pkg/channels/manager_test.go
+++ b/pkg/channels/manager_test.go
@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"testing"
@ -43,6 +44,40 @@ func (m *mockChannel) EditMessage(ctx context.Context, chatID, messageID, conten
 	return nil
 }

+type mockMediaChannel struct {
+	mockChannel
+	sendMediaFn       func(ctx context.Context, msg bus.OutboundMediaMessage) error
+	sentMediaMessages []bus.OutboundMediaMessage
+}
+
+func (m *mockMediaChannel) SendMedia(ctx context.Context, msg bus.OutboundMediaMessage) error {
+	m.sentMediaMessages = append(m.sentMediaMessages, msg)
+	if m.sendMediaFn != nil {
+		return m.sendMediaFn(ctx, msg)
+	}
+	return nil
+}
+
+type mockDeletingMediaChannel struct {
+	mockMediaChannel
+	deleteCalls int
+	lastDeleted struct {
+		chatID    string
+		messageID string
+	}
+}
+
+func (m *mockDeletingMediaChannel) DeleteMessage(
+	_ context.Context,
+	chatID string,
+	messageID string,
+) error {
+	m.deleteCalls++
+	m.lastDeleted.chatID = chatID
+	m.lastDeleted.messageID = messageID
+	return nil
+}
+
 // newTestManager creates a minimal Manager suitable for unit tests.
 func newTestManager() *Manager {
 	return &Manager{
@ -208,6 +243,125 @@ func TestSendWithRetry_MaxRetriesExhausted(t *testing.T) {
 	}
 }

+func TestSendMedia_Success(t *testing.T) {
+	m := newTestManager()
+	var callCount int
+	ch := &mockMediaChannel{
+		sendMediaFn: func(_ context.Context, _ bus.OutboundMediaMessage) error {
+			callCount++
+			return nil
+		},
+	}
+	w := &channelWorker{
+		ch:      ch,
+		limiter: rate.NewLimiter(rate.Inf, 1),
+	}
+	m.channels["test"] = ch
+	m.workers["test"] = w
+
+	err := m.SendMedia(context.Background(), bus.OutboundMediaMessage{
+		Channel: "test",
+		ChatID:  "chat1",
+		Parts:   []bus.MediaPart{{Ref: "media://abc"}},
+	})
+	if err != nil {
+		t.Fatalf("SendMedia() error = %v", err)
+	}
+	if callCount != 1 {
+		t.Fatalf("expected 1 SendMedia call, got %d", callCount)
+	}
+}
+
+func TestSendMedia_PropagatesFailure(t *testing.T) {
+	m := newTestManager()
+	ch := &mockMediaChannel{
+		sendMediaFn: func(_ context.Context, _ bus.OutboundMediaMessage) error {
+			return fmt.Errorf("bad upload: %w", ErrSendFailed)
+		},
+	}
+	w := &channelWorker{
+		ch:      ch,
+		limiter: rate.NewLimiter(rate.Inf, 1),
+	}
+	m.channels["test"] = ch
+	m.workers["test"] = w
+
+	err := m.SendMedia(context.Background(), bus.OutboundMediaMessage{
+		Channel: "test",
+		ChatID:  "chat1",
+		Parts:   []bus.MediaPart{{Ref: "media://abc"}},
+	})
+	if err == nil {
+		t.Fatal("expected SendMedia to return error")
+	}
+	if !errors.Is(err, ErrSendFailed) {
+		t.Fatalf("expected ErrSendFailed, got %v", err)
+	}
+}
+
+func TestSendMedia_UnsupportedChannelReturnsError(t *testing.T) {
+	m := newTestManager()
+	ch := &mockChannel{
+		sendFn: func(_ context.Context, _ bus.OutboundMessage) error {
+			return nil
+		},
+	}
+	w := &channelWorker{
+		ch:      ch,
+		limiter: rate.NewLimiter(rate.Inf, 1),
+	}
+	m.channels["test"] = ch
+	m.workers["test"] = w
+
+	err := m.SendMedia(context.Background(), bus.OutboundMediaMessage{
+		Channel: "test",
+		ChatID:  "chat1",
+		Parts:   []bus.MediaPart{{Ref: "media://abc"}},
+	})
+	if err == nil {
+		t.Fatal("expected SendMedia to return error for unsupported channel")
+	}
+	if !strings.Contains(err.Error(), "does not support media sending") {
+		t.Fatalf("unexpected error: %v", err)
+	}
+}
+
+func TestSendMedia_DeletesPlaceholderBeforeSending(t *testing.T) {
+	m := newTestManager()
+	ch := &mockDeletingMediaChannel{
+		mockMediaChannel: mockMediaChannel{
+			sendMediaFn: func(_ context.Context, _ bus.OutboundMediaMessage) error {
+				return nil
+			},
+		},
+	}
+	w := &channelWorker{
+		ch:      ch,
+		limiter: rate.NewLimiter(rate.Inf, 1),
+	}
+	m.channels["test"] = ch
+	m.workers["test"] = w
+	m.RecordPlaceholder("test", "chat1", "placeholder-1")
+
+	err := m.SendMedia(context.Background(), bus.OutboundMediaMessage{
+		Channel: "test",
+		ChatID:  "chat1",
+		Parts:   []bus.MediaPart{{Ref: "media://abc"}},
+	})
+	if err != nil {
+		t.Fatalf("SendMedia() error = %v", err)
+	}
+	if ch.deleteCalls != 1 {
+		t.Fatalf("expected placeholder delete to be called once, got %d", ch.deleteCalls)
+	}
+	if ch.lastDeleted.chatID != "chat1" || ch.lastDeleted.messageID != "placeholder-1" {
+		t.Fatalf("unexpected placeholder deletion target: %+v", ch.lastDeleted)
+	}
+	if len(ch.sentMediaMessages) != 1 {
+		t.Fatalf("expected media to be sent once, got %d", len(ch.sentMediaMessages))
+	}
+}
+
 func TestSendWithRetry_UnknownError(t *testing.T) {
 	m := newTestManager()
 	var callCount int
--- a/pkg/channels/marker.go
+++ b/pkg/channels/marker.go
@ -0,0 +1,37 @@
+// PicoClaw - Ultra-lightweight personal AI agent
+// Inspired by and based on nanobot: https://github.com/HKUDS/nanobot
+// License: MIT
+//
+// Copyright (c) 2026 PicoClaw contributors
+
+package channels
+
+import (
+	"strings"
+)
+
+// MessageSplitMarker is the delimiter used to split a message into multiple outbound messages.
+// When SplitOnMarker is enabled in config, the Manager will split messages on this marker
+// and send each part as a separate message.
+const MessageSplitMarker = "<|[SPLIT]|>"
+
+// SplitByMarker splits a message by the MessageSplitMarker and returns the parts.
+// Empty parts (including from consecutive markers) are filtered out.
+// If no marker is found, returns a single-element slice containing the original content.
+func SplitByMarker(content string) []string {
+	if content == "" {
+		return nil
+	}
+	parts := strings.Split(content, MessageSplitMarker)
+	result := make([]string, 0, len(parts))
+	for _, part := range parts {
+		trimmed := strings.TrimSpace(part)
+		if trimmed != "" {
+			result = append(result, trimmed)
+		}
+	}
+	if len(result) == 0 {
+		return []string{content}
+	}
+	return result
+}
--- a/pkg/channels/marker_test.go
+++ b/pkg/channels/marker_test.go
@ -0,0 +1,141 @@
+// PicoClaw - Ultra-lightweight personal AI agent
+// License: MIT
+//
+// Copyright (c) 2026 PicoClaw contributors
+
+package channels
+
+import (
+	"testing"
+)
+
+func TestSplitByMarker_Basic(t *testing.T) {
+	content := "Hello <|[SPLIT]|>World"
+	chunks := SplitByMarker(content)
+
+	if len(chunks) != 2 {
+		t.Fatalf("Expected 2 chunks, got %d: %q", len(chunks), chunks)
+	}
+	if chunks[0] != "Hello" {
+		t.Errorf("Expected first chunk 'Hello', got %q", chunks[0])
+	}
+	if chunks[1] != "World" {
+		t.Errorf("Expected second chunk 'World', got %q", chunks[1])
+	}
+}
+
+func TestSplitByMarker_NoMarker(t *testing.T) {
+	content := "Hello World"
+	chunks := SplitByMarker(content)
+
+	if len(chunks) != 1 {
+		t.Fatalf("Expected 1 chunk, got %d: %q", len(chunks), chunks)
+	}
+	if chunks[0] != "Hello World" {
+		t.Errorf("Expected chunk 'Hello World', got %q", chunks[0])
+	}
+}
+
+func TestSplitByMarker_MultipleMarkers(t *testing.T) {
+	content := "Part1 <|[SPLIT]|> Part2 <|[SPLIT]|> Part3"
+	chunks := SplitByMarker(content)
+
+	if len(chunks) != 3 {
+		t.Fatalf("Expected 3 chunks, got %d: %q", len(chunks), chunks)
+	}
+	if chunks[0] != "Part1" || chunks[1] != "Part2" || chunks[2] != "Part3" {
+		t.Errorf("Unexpected chunks: %q", chunks)
+	}
+}
+
+func TestSplitByMarker_EmptyParts(t *testing.T) {
+	// Test consecutive markers and leading/trailing markers
+	content := "<|[SPLIT]|>Hello <|[SPLIT]|><|[SPLIT]|>World<|[SPLIT]|>"
+	chunks := SplitByMarker(content)
+
+	if len(chunks) != 2 {
+		t.Fatalf("Expected 2 chunks, got %d: %q", len(chunks), chunks)
+	}
+	if chunks[0] != "Hello" || chunks[1] != "World" {
+		t.Errorf("Unexpected chunks: %q", chunks)
+	}
+}
+
+func TestSplitByMarker_WhitespaceTrimmed(t *testing.T) {
+	content := "  Hello   <|[SPLIT]|>   World  "
+	chunks := SplitByMarker(content)
+
+	if len(chunks) != 2 {
+		t.Fatalf("Expected 2 chunks, got %d: %q", len(chunks), chunks)
+	}
+	if chunks[0] != "Hello" || chunks[1] != "World" {
+		t.Errorf("Whitespace should be trimmed: %q", chunks)
+	}
+}
+
+func TestSplitByMarker_EmptyInput(t *testing.T) {
+	chunks := SplitByMarker("")
+	if len(chunks) != 0 {
+		t.Errorf("Expected empty slice for empty input, got %d chunks", len(chunks))
+	}
+}
+
+// TestMarkerAndLengthSplitIntegration tests that SplitByMarker and SplitMessage work together correctly.
+// Marker splitting happens first (per-agent config), then length splitting happens (per-channel config).
+func TestMarkerAndLengthSplitIntegration(t *testing.T) {
+	maxLen := 10
+
+	// Original content: "Short <|[SPLIT]|> ThisIsAVeryLongString"
+	content := "Short <|[SPLIT]|> ThisIsAVeryLongString"
+	markerChunks := SplitByMarker(content)
+
+	// Step 1: Marker split should give us 2 chunks
+	if len(markerChunks) != 2 {
+		t.Fatalf("Expected 2 marker chunks, got %d: %q", len(markerChunks), markerChunks)
+	}
+
+	// Step 2: Length split should be applied to each marker chunk
+	var finalChunks []string
+	for _, chunk := range markerChunks {
+		if len([]rune(chunk)) > maxLen {
+			lengthChunks := SplitMessage(chunk, maxLen)
+			finalChunks = append(finalChunks, lengthChunks...)
+		} else {
+			finalChunks = append(finalChunks, chunk)
+		}
+	}
+
+	// "Short" is 6 chars, within limit
+	// "ThisIsAVeryLongString" is 22 chars, should be split into multiple chunks
+	// SplitMessage with maxLen=10 splits: "ThisIsAVeryLongString" -> ["ThisI", "sAVer", "yLong", "String"] (5 chunks)
+	if len(finalChunks) != 5 {
+		t.Errorf("Expected 5 final chunks, got %d: %q", len(finalChunks), finalChunks)
+	}
+
+	// Verify first chunk is unchanged
+	if finalChunks[0] != "Short" {
+		t.Errorf("First chunk should be 'Short', got %q", finalChunks[0])
+	}
+
+	// Verify all length-split chunks are within limit
+	for i, chunk := range finalChunks[1:] {
+		if len([]rune(chunk)) > maxLen {
+			t.Errorf("Chunk %d exceeds maxLen: %q (%d chars)", i+1, chunk, len([]rune(chunk)))
+		}
+	}
+}
+
+// TestMarkerSplitPreservesCodeBlockIntegrity tests that marker split preserves code block boundaries
+func TestMarkerSplitPreservesCodeBlockIntegrity(t *testing.T) {
+	content := "Hello <|[SPLIT]|>```go\npackage main\n```<|[SPLIT]|>World"
+	chunks := SplitByMarker(content)
+
+	if len(chunks) != 3 {
+		t.Fatalf("Expected 3 chunks, got %d: %q", len(chunks), chunks)
+	}
+
+	// Verify code block is intact in middle chunk
+	if chunks[1] != "```go\npackage main\n```" {
+		t.Errorf("Code block not preserved correctly: %q", chunks[1])
+	}
+}
--- a/pkg/channels/matrix/init.go
+++ b/pkg/channels/matrix/init.go
@ -1,6 +1,8 @@
 package matrix

 import (
+	"path/filepath"
+
 	"github.com/sipeed/picoclaw/pkg/bus"
 	"github.com/sipeed/picoclaw/pkg/channels"
 	"github.com/sipeed/picoclaw/pkg/config"
@ -8,6 +10,11 @@ import (

 func init() {
 	channels.RegisterFactory("matrix", func(cfg *config.Config, b *bus.MessageBus) (channels.Channel, error) {
-		return NewMatrixChannel(cfg.Channels.Matrix, b)
+		matrixCfg := cfg.Channels.Matrix
+		cryptoDatabasePath := matrixCfg.CryptoDatabasePath
+		if cryptoDatabasePath == "" {
+			cryptoDatabasePath = filepath.Join(cfg.WorkspacePath(), "matrix")
+		}
+		return NewMatrixChannel(matrixCfg, b, cryptoDatabasePath)
 	})
 }
--- a/pkg/channels/matrix/matrix.go
+++ b/pkg/channels/matrix/matrix.go
@ -2,6 +2,7 @@ package matrix

 import (
 	"context"
+	"database/sql"
 	"fmt"
 	"html"
 	"io"
@ -17,9 +18,12 @@ import (
 	"github.com/gomarkdown/markdown"
 	mdhtml "github.com/gomarkdown/markdown/html"
 	"github.com/gomarkdown/markdown/parser"
+	"go.mau.fi/util/dbutil"
 	"maunium.net/go/mautrix"
+	"maunium.net/go/mautrix/crypto/cryptohelper"
 	"maunium.net/go/mautrix/event"
 	"maunium.net/go/mautrix/id"
+	_ "modernc.org/sqlite"

 	"github.com/sipeed/picoclaw/pkg/bus"
 	"github.com/sipeed/picoclaw/pkg/channels"
@ -30,6 +34,9 @@ import (
 )

 const (
+	sqliteDriver = "sqlite"
+	dbName       = "store.db"
+
 	typingRefreshInterval      = 20 * time.Second
 	typingServerTTL            = 30 * time.Second
 	roomKindCacheTTL           = 5 * time.Minute
@ -181,12 +188,19 @@ type MatrixChannel struct {

 	roomKindCache     *roomKindCache
 	localpartMentionR *regexp.Regexp
+
+	cryptoHelper *cryptohelper.CryptoHelper
+	cryptoDbPath string
 }

-func NewMatrixChannel(cfg config.MatrixConfig, messageBus *bus.MessageBus) (*MatrixChannel, error) {
+func NewMatrixChannel(
+	cfg config.MatrixConfig,
+	messageBus *bus.MessageBus,
+	cryptoDatabasePath string,
+) (*MatrixChannel, error) {
 	homeserver := strings.TrimSpace(cfg.Homeserver)
 	userID := strings.TrimSpace(cfg.UserID)
-	accessToken := strings.TrimSpace(cfg.AccessToken())
+	accessToken := strings.TrimSpace(cfg.AccessToken.String())
 	if homeserver == "" {
 		return nil, fmt.Errorf("matrix homeserver is required")
 	}
@ -230,6 +244,7 @@ func NewMatrixChannel(cfg config.MatrixConfig, messageBus *bus.MessageBus) (*Mat
 		roomKindCache:     newRoomKindCache(roomKindCacheMaxEntries, roomKindCacheTTL),
 		localpartMentionR: localpartMentionRegexp(matrixLocalpart(client.UserID)),
 		typingMu:          sync.Mutex{},
+		cryptoDbPath:      cryptoDatabasePath,
 	}, nil
 }

@ -239,7 +254,21 @@ func (c *MatrixChannel) Start(ctx context.Context) error {
 	c.ctx, c.cancel = context.WithCancel(ctx)
 	c.startTime = time.Now()

+	// Initialize crypto helper if database and passphrase are configured
+	if c.cryptoDbPath != "" && c.config.CryptoPassphrase != "" {
+		if err := c.initCrypto(ctx); err != nil {
+			logger.WarnCF(
+				"matrix",
+				"Failed to initialize crypto, continuing without encryption support",
+				map[string]any{
+					"error": err.Error(),
+				},
+			)
+		}
+	}
+
 	c.syncer.OnEventType(event.EventMessage, c.handleMessageEvent)
+	c.syncer.OnEventType(event.EventEncrypted, c.handleMessageEvent)
 	c.syncer.OnEventType(event.StateMember, c.handleMemberEvent)

 	c.SetRunning(true)
@ -266,10 +295,84 @@ func (c *MatrixChannel) Stop(ctx context.Context) error {
 	}
 	c.stopTypingSessions(ctx)

+	// Close crypto helper if initialized
+	if c.cryptoHelper != nil {
+		c.cryptoHelper.Close()
+		c.cryptoHelper = nil
+		c.client.Crypto = nil
+	}
+
 	logger.InfoC("matrix", "Matrix channel stopped")
 	return nil
 }

+func (c *MatrixChannel) initCrypto(ctx context.Context) error {
+	logger.InfoC("matrix", "Initializing crypto helper")
+
+	// Ensure the crypto database directory exists
+	if err := os.MkdirAll(c.cryptoDbPath, 0o700); err != nil {
+		return fmt.Errorf("create crypto database directory: %w", err)
+	}
+
+	// Create database with sqlite driver (modernc.org/sqlite)
+	dbPath := filepath.Join(c.cryptoDbPath, dbName)
+	connStr := "file:" + dbPath + "?_foreign_keys=on"
+
+	db, err := sql.Open(sqliteDriver, connStr)
+	if err != nil {
+		return fmt.Errorf("open crypto database: %w", err)
+	}
+	db.SetMaxOpenConns(1)
+	db.SetMaxIdleConns(1)
+
+	// Execute PRAGMA statements
+	// This is equivalent to the "sqlite3-fk-wal" dialect used by cryptohelper
+	pragmaStmts := []string{
+		"PRAGMA foreign_keys = ON",
+		"PRAGMA journal_mode = WAL",
+		"PRAGMA synchronous = NORMAL",
+		"PRAGMA busy_timeout = 5000",
+	}
+	for _, pragma := range pragmaStmts {
+		if _, err = db.ExecContext(ctx, pragma); err != nil {
+			_ = db.Close()
+			return fmt.Errorf("execute %s: %w", pragma, err)
+		}
+	}
+
+	// Wrap with dbutil for dialect support
+	wrappedDB, err := dbutil.NewWithDB(db, sqliteDriver)
+	if err != nil {
+		_ = db.Close()
+		return fmt.Errorf("wrap database: %w", err)
+	}
+
+	cryptoHelper, err := cryptohelper.NewCryptoHelper(c.client, []byte(c.config.CryptoPassphrase), wrappedDB)
+	if err != nil {
+		return fmt.Errorf("create crypto helper: %w", err)
+	}
+
+	if c.client.DeviceID == "" {
+		resp, whoamiErr := c.client.Whoami(ctx)
+		if whoamiErr != nil {
+			_ = db.Close()
+			return fmt.Errorf("get device ID via whoami: %w", whoamiErr)
+		}
+		c.client.DeviceID = resp.DeviceID
+	}
+
+	if err = cryptoHelper.Init(ctx); err != nil {
+		cryptoHelper.Close()
+		return fmt.Errorf("init crypto helper: %w", err)
+	}
+
+	c.client.Crypto = cryptoHelper
+	c.cryptoHelper = cryptoHelper
+
+	logger.InfoC("matrix", "Crypto helper initialized successfully")
+	return nil
+}
+
 func markdownToHTML(md string) string {
 	p := parser.NewWithExtensions(parser.CommonExtensions | parser.AutoHeadingIDs)
 	renderer := mdhtml.NewRenderer(mdhtml.RendererOptions{Flags: mdhtml.CommonFlags})
@ -470,10 +573,7 @@ func (c *MatrixChannel) SendPlaceholder(ctx context.Context, chatID string) (str
 		return "", fmt.Errorf("matrix room ID is empty")
 	}

-	text := strings.TrimSpace(c.config.Placeholder.Text)
-	if text == "" {
-		text = "Thinking... 💭"
-	}
+	text := c.config.Placeholder.GetRandomText()

 	resp, err := c.client.SendMessageEvent(ctx, roomID, event.EventMessage, &event.MessageEventContent{
 		MsgType: event.MsgNotice,
@ -548,9 +648,26 @@ func (c *MatrixChannel) handleMessageEvent(ctx context.Context, evt *event.Event
 		return
 	}

-	msgEvt := evt.Content.AsMessage()
-	if msgEvt == nil {
-		return
+	var msgEvt *event.MessageEventContent
+	switch evt.Type {
+	case event.EventMessage:
+		// When crypto is enabled, events marked WasEncrypted=true are
+		// re-dispatched by c.cryptoHelper after decryption and will be
+		// processed again in the EventEncrypted branch. Skip to avoid duplication.
+		if c.client.Crypto != nil && evt.Mautrix.WasEncrypted {
+			return
+		}
+
+		msgEvt = evt.Content.AsMessage()
+		if msgEvt == nil || msgEvt.MsgType == "" {
+			return
+		}
+	case event.EventEncrypted:
+		var ok bool
+		msgEvt, ok = c.decryptEvent(ctx, evt)
+		if !ok {
+			return
+		}
 	}

 	// Ignore edits.
@ -642,6 +759,36 @@ func (c *MatrixChannel) handleMessageEvent(ctx context.Context, evt *event.Event
 	)
 }

+// decryptEvent decrypts an encrypted event and returns the decrypted message event content.
+// It returns the decrypted content and a boolean indicating whether decryption was successful.
+func (c *MatrixChannel) decryptEvent(ctx context.Context, evt *event.Event) (*event.MessageEventContent, bool) {
+	if c.client.Crypto == nil {
+		logger.DebugCF("matrix", "Received encrypted message but crypto is not enabled", map[string]any{
+			"room_id": evt.RoomID.String(),
+		})
+		return nil, false
+	}
+
+	decrypted, err := c.client.Crypto.Decrypt(ctx, evt)
+	if err != nil {
+		logger.WarnCF("matrix", "Failed to decrypt message", map[string]any{
+			"room_id": evt.RoomID.String(),
+			"error":   err.Error(),
+		})
+		return nil, false
+	}
+
+	if decrypted.Type != event.EventMessage {
+		logger.DebugCF("matrix", "Decrypted event is not a message event", map[string]any{
+			"room_id": evt.RoomID.String(),
+			"type":    decrypted.Type.String(),
+		})
+		return nil, false
+	}
+
+	return decrypted.Content.AsMessage(), true
+}
+
 func (c *MatrixChannel) extractInboundContent(
 	ctx context.Context,
 	msgEvt *event.MessageEventContent,
--- a/pkg/channels/onebot/onebot.go
+++ b/pkg/channels/onebot/onebot.go
@ -184,8 +184,8 @@ func (c *OneBotChannel) connect() error {
 	dialer.HandshakeTimeout = 10 * time.Second

 	header := make(map[string][]string)
-	if c.config.AccessToken() != "" {
-		header["Authorization"] = []string{"Bearer " + c.config.AccessToken()}
+	if c.config.AccessToken.String() != "" {
+		header["Authorization"] = []string{"Bearer " + c.config.AccessToken.String()}
 	}

 	conn, resp, err := dialer.Dial(c.config.WSUrl, header)
--- a/pkg/channels/pico/client.go
+++ b/pkg/channels/pico/client.go
@ -81,8 +81,8 @@ func (c *PicoClientChannel) Stop(ctx context.Context) error {

 func (c *PicoClientChannel) dial() error {
 	header := http.Header{}
-	if c.config.Token != "" {
-		header.Set("Authorization", "Bearer "+c.config.Token)
+	if c.config.Token.String() != "" {
+		header.Set("Authorization", "Bearer "+c.config.Token.String())
 	}

 	ws, resp, err := websocket.DefaultDialer.DialContext(c.ctx, c.config.URL, header)
--- a/pkg/channels/pico/client_test.go
+++ b/pkg/channels/pico/client_test.go
@ -106,7 +106,7 @@ func TestClientChannel_ConnectAndSend(t *testing.T) {
 	mb := bus.NewMessageBus()
 	ch, err := NewPicoClientChannel(config.PicoClientConfig{
 		URL:          wsURL(srv.URL),
-		Token:        "test-token",
+		Token:        *config.NewSecureString("test-token"),
 		SessionID:    "sess-1",
 		PingInterval: 60,
 		ReadTimeout:  10,
@ -139,7 +139,7 @@ func TestClientChannel_AuthFailure(t *testing.T) {

 	ch, err := NewPicoClientChannel(config.PicoClientConfig{
 		URL:   wsURL(srv.URL),
-		Token: "wrong-token",
+		Token: *config.NewSecureString("wrong-token"),
 	}, bus.NewMessageBus())
 	if err != nil {
 		t.Fatal(err)
--- a/pkg/channels/pico/pico.go
+++ b/pkg/channels/pico/pico.go
@ -54,17 +54,18 @@ func (pc *picoConn) close() {
 // It serves as the reference implementation for all optional capability interfaces.
 type PicoChannel struct {
 	*channels.BaseChannel
-	config      config.PicoConfig
-	upgrader    websocket.Upgrader
-	connections sync.Map // connID → *picoConn
-	connCount   atomic.Int32
-	ctx         context.Context
-	cancel      context.CancelFunc
+	config             config.PicoConfig
+	upgrader           websocket.Upgrader
+	connections        map[string]*picoConn            // connID -> *picoConn
+	sessionConnections map[string]map[string]*picoConn // sessionID -> connID -> *picoConn
+	connsMu            sync.RWMutex
+	ctx                context.Context
+	cancel             context.CancelFunc
 }

 // NewPicoChannel creates a new Pico Protocol channel.
 func NewPicoChannel(cfg config.PicoConfig, messageBus *bus.MessageBus) (*PicoChannel, error) {
-	if cfg.Token() == "" {
+	if cfg.Token.String() == "" {
 		return nil, fmt.Errorf("pico token is required")
 	}

@ -92,9 +93,104 @@ func NewPicoChannel(cfg config.PicoConfig, messageBus *bus.MessageBus) (*PicoCha
 			ReadBufferSize:  1024,
 			WriteBufferSize: 1024,
 		},
+		connections:        make(map[string]*picoConn),
+		sessionConnections: make(map[string]map[string]*picoConn),
 	}, nil
 }

+// createAndAddConnection checks MaxConnections and registers a connection atomically.
+func (c *PicoChannel) createAndAddConnection(conn *websocket.Conn, sessionID string, maxConns int) (*picoConn, error) {
+	c.connsMu.Lock()
+	defer c.connsMu.Unlock()
+	if len(c.connections) >= maxConns {
+		return nil, channels.ErrTemporary
+	}
+
+	var connID string
+	for {
+		connID = uuid.New().String()
+		if _, exists := c.connections[connID]; !exists {
+			break
+		}
+	}
+
+	pc := &picoConn{
+		id:        connID,
+		conn:      conn,
+		sessionID: sessionID,
+	}
+
+	c.connections[pc.id] = pc
+	bySession, ok := c.sessionConnections[pc.sessionID]
+	if !ok {
+		bySession = make(map[string]*picoConn)
+		c.sessionConnections[pc.sessionID] = bySession
+	}
+	bySession[pc.id] = pc
+
+	return pc, nil
+}
+
+// removeConnection deletes a connection from indexes and returns it when found.
+func (c *PicoChannel) removeConnection(connID string) *picoConn {
+	c.connsMu.Lock()
+	defer c.connsMu.Unlock()
+
+	pc, ok := c.connections[connID]
+	if !ok {
+		return nil
+	}
+
+	delete(c.connections, connID)
+	if bySession, ok := c.sessionConnections[pc.sessionID]; ok {
+		delete(bySession, connID)
+		if len(bySession) == 0 {
+			delete(c.sessionConnections, pc.sessionID)
+		}
+	}
+
+	return pc
+}
+
+// takeAllConnections snapshots and clears all connection indexes.
+func (c *PicoChannel) takeAllConnections() []*picoConn {
+	c.connsMu.Lock()
+	defer c.connsMu.Unlock()
+
+	all := make([]*picoConn, 0, len(c.connections))
+	for _, pc := range c.connections {
+		all = append(all, pc)
+	}
+	clear(c.connections)
+	clear(c.sessionConnections)
+
+	return all
+}
+
+// sessionConnectionsSnapshot returns all active connections for a session.
+func (c *PicoChannel) sessionConnectionsSnapshot(sessionID string) []*picoConn {
+	c.connsMu.RLock()
+	defer c.connsMu.RUnlock()
+
+	bySession, ok := c.sessionConnections[sessionID]
+	if !ok || len(bySession) == 0 {
+		return nil
+	}
+
+	conns := make([]*picoConn, 0, len(bySession))
+	for _, pc := range bySession {
+		conns = append(conns, pc)
+	}
+	return conns
+}
+
+// currentConnCount returns a lock-protected snapshot of active connection count.
+func (c *PicoChannel) currentConnCount() int {
+	c.connsMu.RLock()
+	defer c.connsMu.RUnlock()
+	return len(c.connections)
+}
+
 // Start implements Channel.
 func (c *PicoChannel) Start(ctx context.Context) error {
 	logger.InfoC("pico", "Starting Pico Protocol channel")
@ -110,13 +206,9 @@ func (c *PicoChannel) Stop(ctx context.Context) error {
 	c.SetRunning(false)

 	// Close all connections
-	c.connections.Range(func(key, value any) bool {
-		if pc, ok := value.(*picoConn); ok {
-			pc.close()
-		}
-		c.connections.Delete(key)
-		return true
-	})
+	for _, pc := range c.takeAllConnections() {
+		pc.close()
+	}

 	if c.cancel != nil {
 		c.cancel()
@ -133,8 +225,8 @@ func (c *PicoChannel) WebhookPath() string { return "/pico/" }
 func (c *PicoChannel) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	path := strings.TrimPrefix(r.URL.Path, "/pico")

-	switch {
-	case path == "/ws" || path == "/ws/":
+	switch path {
+	case "/ws", "/ws/":
 		c.handleWebSocket(w, r)
 	default:
 		http.NotFound(w, r)
@ -183,10 +275,7 @@ func (c *PicoChannel) SendPlaceholder(ctx context.Context, chatID string) (strin
 		return "", nil
 	}

-	text := c.config.Placeholder.Text
-	if text == "" {
-		text = "Thinking... 💭"
-	}
+	text := c.config.Placeholder.GetRandomText()

 	msgID := uuid.New().String()
 	outMsg := newMessage(TypeMessageCreate, map[string]any{
@ -208,23 +297,16 @@ func (c *PicoChannel) broadcastToSession(chatID string, msg PicoMessage) error {
 	msg.SessionID = sessionID

 	var sent bool
-	c.connections.Range(func(key, value any) bool {
-		pc, ok := value.(*picoConn)
-		if !ok {
-			return true
+	for _, pc := range c.sessionConnectionsSnapshot(sessionID) {
+		if err := pc.writeJSON(msg); err != nil {
+			logger.DebugCF("pico", "Write to connection failed", map[string]any{
+				"conn_id": pc.id,
+				"error":   err.Error(),
+			})
+		} else {
+			sent = true
 		}
-		if pc.sessionID == sessionID {
-			if err := pc.writeJSON(msg); err != nil {
-				logger.DebugCF("pico", "Write to connection failed", map[string]any{
-					"conn_id": pc.id,
-					"error":   err.Error(),
-				})
-			} else {
-				sent = true
-			}
-		}
-		return true
-	})
+	}

 	if !sent {
 		return fmt.Errorf("no active connections for session %s: %w", sessionID, channels.ErrSendFailed)
@ -250,7 +332,7 @@ func (c *PicoChannel) handleWebSocket(w http.ResponseWriter, r *http.Request) {
 	if maxConns <= 0 {
 		maxConns = 100
 	}
-	if int(c.connCount.Load()) >= maxConns {
+	if c.currentConnCount() >= maxConns {
 		http.Error(w, "too many connections", http.StatusServiceUnavailable)
 		return
 	}
@ -275,15 +357,17 @@ func (c *PicoChannel) handleWebSocket(w http.ResponseWriter, r *http.Request) {
 		sessionID = uuid.New().String()
 	}

-	pc := &picoConn{
-		id:        uuid.New().String(),
-		conn:      conn,
-		sessionID: sessionID,
+	pc, err := c.createAndAddConnection(conn, sessionID, maxConns)
+	if err != nil {
+		_ = conn.WriteControl(
+			websocket.CloseMessage,
+			websocket.FormatCloseMessage(websocket.CloseTryAgainLater, "too many connections"),
+			time.Now().Add(2*time.Second),
+		)
+		_ = conn.Close()
+		return
 	}

-	c.connections.Store(pc.id, pc)
-	c.connCount.Add(1)
-
 	logger.InfoCF("pico", "WebSocket client connected", map[string]any{
 		"conn_id":    pc.id,
 		"session_id": sessionID,
@ -297,7 +381,7 @@ func (c *PicoChannel) handleWebSocket(w http.ResponseWriter, r *http.Request) {
 //  2. Sec-WebSocket-Protocol "token.<value>" (for browsers that can't set headers)
 //  3. Query parameter "token" (only when AllowTokenQuery is on)
 func (c *PicoChannel) authenticate(r *http.Request) bool {
-	token := c.config.Token()
+	token := c.config.Token.String()
 	if token == "" {
 		return false
 	}
@ -328,7 +412,7 @@ func (c *PicoChannel) authenticate(r *http.Request) bool {
 // matchedSubprotocol returns the "token.<value>" subprotocol that matches
 // the configured token, or "" if none do.
 func (c *PicoChannel) matchedSubprotocol(r *http.Request) string {
-	token := c.config.Token()
+	token := c.config.Token.String()
 	for _, proto := range websocket.Subprotocols(r) {
 		if after, ok := strings.CutPrefix(proto, "token."); ok && after == token {
 			return proto
@ -341,12 +425,12 @@ func (c *PicoChannel) matchedSubprotocol(r *http.Request) string {
 func (c *PicoChannel) readLoop(pc *picoConn) {
 	defer func() {
 		pc.close()
-		c.connections.Delete(pc.id)
-		c.connCount.Add(-1)
-		logger.InfoCF("pico", "WebSocket client disconnected", map[string]any{
-			"conn_id":    pc.id,
-			"session_id": pc.sessionID,
-		})
+		if removed := c.removeConnection(pc.id); removed != nil {
+			logger.InfoCF("pico", "WebSocket client disconnected", map[string]any{
+				"conn_id":    removed.id,
+				"session_id": removed.sessionID,
+			})
+		}
 	}()

 	readTimeout := time.Duration(c.config.ReadTimeout) * time.Second
--- a/pkg/channels/pico/pico_test.go
+++ b/pkg/channels/pico/pico_test.go
@ -0,0 +1,144 @@
+package pico
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"sync"
+	"testing"
+
+	"github.com/sipeed/picoclaw/pkg/bus"
+	"github.com/sipeed/picoclaw/pkg/channels"
+	"github.com/sipeed/picoclaw/pkg/config"
+)
+
+func newTestPicoChannel(t *testing.T) *PicoChannel {
+	t.Helper()
+
+	cfg := config.PicoConfig{}
+	cfg.SetToken("test-token")
+	ch, err := NewPicoChannel(cfg, bus.NewMessageBus())
+	if err != nil {
+		t.Fatalf("NewPicoChannel: %v", err)
+	}
+
+	ch.ctx = context.Background()
+	return ch
+}
+
+func TestCreateAndAddConnection_RespectsMaxConnectionsConcurrently(t *testing.T) {
+	ch := newTestPicoChannel(t)
+
+	const (
+		maxConns   = 5
+		goroutines = 64
+		sessionID  = "session-a"
+	)
+
+	var wg sync.WaitGroup
+	var mu sync.Mutex
+	successCount := 0
+	errCount := 0
+
+	wg.Add(goroutines)
+	for i := 0; i < goroutines; i++ {
+		go func() {
+			defer wg.Done()
+
+			pc, err := ch.createAndAddConnection(nil, sessionID, maxConns)
+			mu.Lock()
+			defer mu.Unlock()
+
+			if err == nil {
+				successCount++
+				if pc == nil {
+					t.Errorf("pc is nil on success")
+				}
+				return
+			}
+			if !errors.Is(err, channels.ErrTemporary) {
+				t.Errorf("unexpected error: %v", err)
+				return
+			}
+			errCount++
+		}()
+	}
+	wg.Wait()
+
+	if successCount > maxConns {
+		t.Fatalf("successCount=%d > maxConns=%d", successCount, maxConns)
+	}
+	if successCount+errCount != goroutines {
+		t.Fatalf("success=%d err=%d total=%d want=%d", successCount, errCount, successCount+errCount, goroutines)
+	}
+	if got := ch.currentConnCount(); got != maxConns {
+		t.Fatalf("currentConnCount=%d want=%d", got, maxConns)
+	}
+}
+
+func TestRemoveConnection_CleansBothIndexes(t *testing.T) {
+	ch := newTestPicoChannel(t)
+
+	pc, err := ch.createAndAddConnection(nil, "session-cleanup", 10)
+	if err != nil {
+		t.Fatalf("createAndAddConnection: %v", err)
+	}
+
+	removed := ch.removeConnection(pc.id)
+	if removed == nil {
+		t.Fatal("removeConnection returned nil")
+	}
+
+	ch.connsMu.RLock()
+	defer ch.connsMu.RUnlock()
+
+	if _, ok := ch.connections[pc.id]; ok {
+		t.Fatalf("connID %s still exists in connections", pc.id)
+	}
+	if _, ok := ch.sessionConnections[pc.sessionID]; ok {
+		t.Fatalf("session %s still exists in sessionConnections", pc.sessionID)
+	}
+	if got := len(ch.connections); got != 0 {
+		t.Fatalf("len(connections)=%d want=0", got)
+	}
+}
+
+func TestBroadcastToSession_TargetsOnlyRequestedSession(t *testing.T) {
+	ch := newTestPicoChannel(t)
+
+	target := &picoConn{id: "target", sessionID: "s-target"}
+	target.closed.Store(true)
+	ch.addConnForTest(target)
+
+	other := &picoConn{id: "other", sessionID: "s-other"}
+	ch.addConnForTest(other)
+
+	err := ch.broadcastToSession("pico:s-target", newMessage(TypeMessageCreate, map[string]any{"content": "hello"}))
+	if err == nil {
+		t.Fatal("expected send failure due to closed target connection")
+	}
+	if !errors.Is(err, channels.ErrSendFailed) {
+		t.Fatalf("expected ErrSendFailed, got %v", err)
+	}
+}
+
+func (c *PicoChannel) addConnForTest(pc *picoConn) {
+	c.connsMu.Lock()
+	defer c.connsMu.Unlock()
+	if c.connections == nil {
+		c.connections = make(map[string]*picoConn)
+	}
+	if c.sessionConnections == nil {
+		c.sessionConnections = make(map[string]map[string]*picoConn)
+	}
+	if _, exists := c.connections[pc.id]; exists {
+		panic(fmt.Sprintf("duplicate conn id in test: %s", pc.id))
+	}
+	c.connections[pc.id] = pc
+	bySession, ok := c.sessionConnections[pc.sessionID]
+	if !ok {
+		bySession = make(map[string]*picoConn)
+		c.sessionConnections[pc.sessionID] = bySession
+	}
+	bySession[pc.id] = pc
+}
--- a/pkg/channels/qq/qq.go
+++ b/pkg/channels/qq/qq.go
@ -98,7 +98,7 @@ func NewQQChannel(cfg config.QQConfig, messageBus *bus.MessageBus) (*QQChannel,
 }

 func (c *QQChannel) Start(ctx context.Context) error {
-	if c.config.AppID == "" || c.config.AppSecret() == "" {
+	if c.config.AppID == "" || c.config.AppSecret.String() == "" {
 		return fmt.Errorf("QQ app_id and app_secret not configured")
 	}

@ -112,7 +112,7 @@ func (c *QQChannel) Start(ctx context.Context) error {
 	// create token source
 	credentials := &token.QQBotCredentials{
 		AppID:     c.config.AppID,
-		AppSecret: c.config.AppSecret(),
+		AppSecret: c.config.AppSecret.String(),
 	}
 	c.tokenSource = token.NewQQBotTokenSource(credentials)

@ -357,6 +357,7 @@ type qqMediaUpload struct {
 	FileType   uint64 `json:"file_type"`
 	URL        string `json:"url,omitempty"`
 	FileData   string `json:"file_data,omitempty"`
+	FileName   string `json:"file_name,omitempty"`
 	SrvSendMsg bool   `json:"srv_send_msg,omitempty"`
 }

@ -393,6 +394,7 @@ func (c *QQChannel) buildMediaUpload(part bus.MediaPart) (*qqMediaUpload, error)
 	if isHTTPURL(mediaRef) {
 		payload.FileType = qqFileType(c.outboundMediaType(part, ""))
 		payload.URL = mediaRef
+		payload.FileName = qqUploadFilename(part, mediaRef, payload.FileType)
 		return payload, nil
 	}

@ -415,9 +417,11 @@ func (c *QQChannel) buildMediaUpload(part bus.MediaPart) (*qqMediaUpload, error)
 	if isHTTPURL(resolved) {
 		payload.FileType = qqFileType(c.outboundMediaType(part, ""))
 		payload.URL = resolved
+		payload.FileName = qqUploadFilename(part, resolved, payload.FileType)
 		return payload, nil
 	}
 	payload.FileType = qqFileType(c.outboundMediaType(part, resolved))
+	payload.FileName = qqUploadFilename(part, resolved, payload.FileType)

 	if limitBytes := c.maxBase64FileSizeBytes(); limitBytes > 0 {
 		info, statErr := os.Stat(resolved)
@ -444,6 +448,28 @@ func (c *QQChannel) buildMediaUpload(part bus.MediaPart) (*qqMediaUpload, error)
 	return payload, nil
 }

+func qqUploadFilename(part bus.MediaPart, resolved string, fileType uint64) string {
+	if fileType != qqFileType("file") {
+		return ""
+	}
+	if part.Filename != "" {
+		return part.Filename
+	}
+	if isHTTPURL(resolved) {
+		if parsed, err := url.Parse(resolved); err == nil {
+			if base := path.Base(parsed.Path); base != "" && base != "." && base != "/" {
+				return base
+			}
+		}
+		return ""
+	}
+
+	if base := filepath.Base(resolved); base != "" && base != "." {
+		return base
+	}
+	return ""
+}
+
 func (c *QQChannel) outboundMediaType(part bus.MediaPart, localPath string) string {
 	if part.Type != "audio" {
 		return part.Type
--- a/pkg/channels/qq/qq_test.go
+++ b/pkg/channels/qq/qq_test.go
@ -444,6 +444,9 @@ func TestSendMedia_UsesRemoteURLUploadForC2C(t *testing.T) {
 	if upload.body.FileType != 4 {
 		t.Fatalf("upload file_type = %d, want 4", upload.body.FileType)
 	}
+	if upload.body.FileName != "report.pdf" {
+		t.Fatalf("upload file_name = %q, want report.pdf", upload.body.FileName)
+	}

 	if len(api.c2cMessages) != 1 {
 		t.Fatalf("c2cMessages = %d, want 1", len(api.c2cMessages))
@ -460,6 +463,59 @@ func TestSendMedia_UsesRemoteURLUploadForC2C(t *testing.T) {
 	}
 }

+func TestSendMedia_LocalFileUploadIncludesStoredFilename(t *testing.T) {
+	messageBus := bus.NewMessageBus()
+	store := media.NewFileMediaStore()
+
+	localPath := writeTempFile(t, t.TempDir(), "report.pdf", []byte("fake-pdf"))
+	ref, err := store.Store(localPath, media.MediaMeta{
+		Filename:    "report.pdf",
+		ContentType: "application/pdf",
+	}, "qq:test")
+	if err != nil {
+		t.Fatalf("Store() error = %v", err)
+	}
+
+	api := &fakeQQAPI{
+		transportResp: mustJSON(t, dto.Message{FileInfo: []byte("local-file-info")}),
+	}
+	ch := &QQChannel{
+		BaseChannel: channels.NewBaseChannel("qq", nil, messageBus, nil),
+		api:         api,
+		dedup:       make(map[string]time.Time),
+		done:        make(chan struct{}),
+		ctx:         context.Background(),
+	}
+	ch.SetRunning(true)
+	ch.SetMediaStore(store)
+	ch.chatType.Store("user-1", "direct")
+
+	err = ch.SendMedia(context.Background(), bus.OutboundMediaMessage{
+		ChatID: "user-1",
+		Parts: []bus.MediaPart{{
+			Type: "file",
+			Ref:  ref,
+		}},
+	})
+	if err != nil {
+		t.Fatalf("SendMedia() error = %v", err)
+	}
+
+	if len(api.transportCalls) != 1 {
+		t.Fatalf("transportCalls = %d, want 1", len(api.transportCalls))
+	}
+	upload := api.transportCalls[0]
+	if upload.body.FileType != 4 {
+		t.Fatalf("upload file_type = %d, want 4", upload.body.FileType)
+	}
+	if upload.body.FileName != "report.pdf" {
+		t.Fatalf("upload file_name = %q, want report.pdf", upload.body.FileName)
+	}
+	if upload.body.FileData == "" {
+		t.Fatal("upload file_data = empty, want base64 payload")
+	}
+}
+
 func TestSendMedia_ReturnsSendFailedWithoutMediaStore(t *testing.T) {
 	messageBus := bus.NewMessageBus()
 	ch := &QQChannel{
--- a/pkg/channels/slack/slack.go
+++ b/pkg/channels/slack/slack.go
@ -37,13 +37,13 @@ type slackMessageRef struct {
 }

 func NewSlackChannel(cfg config.SlackConfig, messageBus *bus.MessageBus) (*SlackChannel, error) {
-	if cfg.BotToken() == "" || cfg.AppToken() == "" {
+	if cfg.BotToken.String() == "" || cfg.AppToken.String() == "" {
 		return nil, fmt.Errorf("slack bot_token and app_token are required")
 	}

 	api := slack.New(
-		cfg.BotToken(),
-		slack.OptionAppLevelToken(cfg.AppToken()),
+		cfg.BotToken.String(),
+		slack.OptionAppLevelToken(cfg.AppToken.String()),
 	)

 	socketClient := socketmode.New(api)
@ -516,7 +516,7 @@ func (c *SlackChannel) downloadSlackFile(file slack.File) string {
 	return utils.DownloadFile(downloadURL, file.Name, utils.DownloadOptions{
 		LoggerPrefix: "slack",
 		ExtraHeaders: map[string]string{
-			"Authorization": "Bearer " + c.config.BotToken(),
+			"Authorization": "Bearer " + c.config.BotToken.String(),
 		},
 	})
 }
--- a/pkg/channels/slack/slack_test.go
+++ b/pkg/channels/slack/slack_test.go
@ -103,7 +103,7 @@ func TestNewSlackChannel(t *testing.T) {

 	t.Run("missing bot token", func(t *testing.T) {
 		cfg := config.SlackConfig{}
-		cfg.SetAppToken("xapp-test")
+		cfg.AppToken = *config.NewSecureString("xapp-test")
 		_, err := NewSlackChannel(cfg, msgBus)
 		if err == nil {
 			t.Error("expected error for missing bot_token, got nil")
@ -112,7 +112,7 @@ func TestNewSlackChannel(t *testing.T) {

 	t.Run("missing app token", func(t *testing.T) {
 		cfg := config.SlackConfig{}
-		cfg.SetBotToken("xoxb-test")
+		cfg.BotToken = *config.NewSecureString("xoxb-test")
 		_, err := NewSlackChannel(cfg, msgBus)
 		if err == nil {
 			t.Error("expected error for missing app_token, got nil")
@ -123,8 +123,8 @@ func TestNewSlackChannel(t *testing.T) {
 		cfg := config.SlackConfig{
 			AllowFrom: []string{"U123"},
 		}
-		cfg.SetBotToken("xoxb-test")
-		cfg.SetAppToken("xapp-test")
+		cfg.BotToken = *config.NewSecureString("xoxb-test")
+		cfg.AppToken = *config.NewSecureString("xapp-test")
 		ch, err := NewSlackChannel(cfg, msgBus)
 		if err != nil {
 			t.Fatalf("unexpected error: %v", err)
@ -145,8 +145,8 @@ func TestSlackChannelIsAllowed(t *testing.T) {
 		cfg := config.SlackConfig{
 			AllowFrom: []string{},
 		}
-		cfg.SetBotToken("xoxb-test")
-		cfg.SetAppToken("xapp-test")
+		cfg.BotToken = *config.NewSecureString("xoxb-test")
+		cfg.AppToken = *config.NewSecureString("xapp-test")
 		ch, _ := NewSlackChannel(cfg, msgBus)
 		if !ch.IsAllowed("U_ANYONE") {
 			t.Error("empty allowlist should allow all users")
@ -157,8 +157,8 @@ func TestSlackChannelIsAllowed(t *testing.T) {
 		cfg := config.SlackConfig{
 			AllowFrom: []string{"U_ALLOWED"},
 		}
-		cfg.SetBotToken("xoxb-test")
-		cfg.SetAppToken("xapp-test")
+		cfg.BotToken = *config.NewSecureString("xoxb-test")
+		cfg.AppToken = *config.NewSecureString("xapp-test")
 		ch, _ := NewSlackChannel(cfg, msgBus)
 		if !ch.IsAllowed("U_ALLOWED") {
 			t.Error("allowed user should pass allowlist check")
--- a/pkg/channels/telegram/telegram.go
+++ b/pkg/channels/telegram/telegram.go
@ -83,7 +83,7 @@ func NewTelegramChannel(cfg *config.Config, bus *bus.MessageBus) (*TelegramChann
 	}
 	opts = append(opts, telego.WithLogger(logger.NewLogger("telego")))

-	bot, err := telego.NewBot(telegramCfg.Token(), opts...)
+	bot, err := telego.NewBot(telegramCfg.Token.String(), opts...)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create telegram bot: %w", err)
 	}
@ -402,10 +402,7 @@ func (c *TelegramChannel) SendPlaceholder(ctx context.Context, chatID string) (s
 		return "", nil
 	}

-	text := phCfg.Text
-	if text == "" {
-		text = "Thinking... 💭"
-	}
+	text := phCfg.GetRandomText()

 	cid, threadID, err := parseTelegramChatID(chatID)
 	if err != nil {
@ -481,13 +478,26 @@ func (c *TelegramChannel) SendMedia(ctx context.Context, msg bus.OutboundMediaMe
 				_, err = c.bot.SendDocument(ctx, docParams)
 			}
 		case "audio":
-			params := &telego.SendAudioParams{
-				ChatID:          tu.ID(chatID),
-				MessageThreadID: threadID,
-				Audio:           telego.InputFile{File: file},
-				Caption:         part.Caption,
+			// Send OGG files with "voice" in the filename as Telegram voice
+			// bubbles (SendVoice) instead of audio attachments (SendAudio).
+			fn := strings.ToLower(part.Filename)
+			if strings.Contains(fn, "voice") && (strings.HasSuffix(fn, ".ogg") || strings.HasSuffix(fn, ".oga")) {
+				vparams := &telego.SendVoiceParams{
+					ChatID:          tu.ID(chatID),
+					MessageThreadID: threadID,
+					Voice:           telego.InputFile{File: file},
+					Caption:         part.Caption,
+				}
+				_, err = c.bot.SendVoice(ctx, vparams)
+			} else {
+				params := &telego.SendAudioParams{
+					ChatID:          tu.ID(chatID),
+					MessageThreadID: threadID,
+					Audio:           telego.InputFile{File: file},
+					Caption:         part.Caption,
+				}
+				_, err = c.bot.SendAudio(ctx, params)
 			}
-			_, err = c.bot.SendAudio(ctx, params)
 		case "video":
 			params := &telego.SendVideoParams{
 				ChatID:          tu.ID(chatID),
@ -629,8 +639,12 @@ func (c *TelegramChannel) handleMessage(ctx context.Context, message *telego.Mes
 		}
 	}

+	if content == "" && len(mediaPaths) == 0 {
+		return nil
+	}
+
 	if content == "" {
-		content = "[empty message]"
+		content = "[media only]"
 	}

 	// In group chats, apply unified group trigger filtering
--- a/pkg/channels/telegram/telegram_test.go
+++ b/pkg/channels/telegram/telegram_test.go
@ -641,3 +641,35 @@ func TestHandleMessage_ReplyThread_NonForum_NoIsolation(t *testing.T) {
 	assert.Empty(t, inbound.Metadata["parent_peer_kind"])
 	assert.Empty(t, inbound.Metadata["parent_peer_id"])
 }
+
+func TestHandleMessage_EmptyContent_Ignored(t *testing.T) {
+	messageBus := bus.NewMessageBus()
+	ch := &TelegramChannel{
+		BaseChannel: channels.NewBaseChannel("telegram", nil, messageBus, nil),
+		chatIDs:     make(map[string]int64),
+		ctx:         context.Background(),
+	}
+
+	// Service message with no text/caption/media (like ForumTopicCreated)
+	msg := &telego.Message{
+		MessageID: 123,
+		Chat: telego.Chat{
+			ID:   456,
+			Type: "group",
+		},
+		From: &telego.User{
+			ID:        789,
+			FirstName: "User",
+		},
+	}
+
+	err := ch.handleMessage(context.Background(), msg)
+	require.NoError(t, err)
+
+	// Should NOT publish to message bus
+	select {
+	case <-messageBus.InboundChan():
+		t.Fatal("Empty message should not be published to message bus")
+	default:
+	}
+}
--- a/pkg/channels/wecom/aibot.go
+++ b/pkg/channels/wecom/aibot.go
--- a/pkg/channels/wecom/aibot_test.go
+++ b/pkg/channels/wecom/aibot_test.go
@ -1,559 +0,0 @@
-package wecom
-
-import (
-	"context"
-	"encoding/json"
-	"testing"
-	"time"
-
-	"github.com/sipeed/picoclaw/pkg/bus"
-	"github.com/sipeed/picoclaw/pkg/channels"
-	"github.com/sipeed/picoclaw/pkg/config"
-)
-
-// ---- Webhook mode tests ----
-
-func TestNewWeComAIBotChannel_WebhookMode(t *testing.T) {
-	t.Run("success with valid config", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{}
-		cfg.Enabled = true
-		cfg.SetToken("test_token")
-		cfg.SetEncodingAESKey("testkey1234567890123456789012345678901234567")
-		cfg.WebhookPath = "/webhook/test"
-
-		messageBus := bus.NewMessageBus()
-		ch, err := NewWeComAIBotChannel(cfg, messageBus)
-		if err != nil {
-			t.Fatalf("Expected no error, got %v", err)
-		}
-		if ch == nil {
-			t.Fatal("Expected channel to be created")
-		}
-		if ch.Name() != "wecom_aibot" {
-			t.Errorf("Expected name 'wecom_aibot', got '%s'", ch.Name())
-		}
-		// Webhook mode must implement WebhookHandler.
-		if _, ok := ch.(channels.WebhookHandler); !ok {
-			t.Error("Webhook mode channel should implement WebhookHandler")
-		}
-	})
-
-	t.Run("error with missing token", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{}
-		cfg.Enabled = true
-		cfg.SetEncodingAESKey("testkey1234567890123456789012345678901234567")
-
-		messageBus := bus.NewMessageBus()
-		_, err := NewWeComAIBotChannel(cfg, messageBus)
-		if err == nil {
-			t.Fatal("Expected error for missing token, got nil")
-		}
-	})
-
-	t.Run("error with missing encoding key", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{}
-		cfg.Enabled = true
-		cfg.SetToken("test_token")
-
-		messageBus := bus.NewMessageBus()
-		_, err := NewWeComAIBotChannel(cfg, messageBus)
-		if err == nil {
-			t.Fatal("Expected error for missing encoding key, got nil")
-		}
-	})
-}
-
-func TestWeComAIBotWebhookChannelStartStop(t *testing.T) {
-	cfg := config.WeComAIBotConfig{
-		Enabled: true,
-	}
-	cfg.SetToken("test_token")
-	cfg.SetEncodingAESKey("testkey1234567890123456789012345678901234567")
-
-	messageBus := bus.NewMessageBus()
-	ch, err := NewWeComAIBotChannel(cfg, messageBus)
-	if err != nil {
-		t.Fatalf("Failed to create channel: %v", err)
-	}
-
-	ctx := context.Background()
-
-	if err := ch.Start(ctx); err != nil {
-		t.Fatalf("Failed to start channel: %v", err)
-	}
-	if !ch.IsRunning() {
-		t.Error("Expected channel to be running after Start")
-	}
-
-	if err := ch.Stop(ctx); err != nil {
-		t.Fatalf("Failed to stop channel: %v", err)
-	}
-	if ch.IsRunning() {
-		t.Error("Expected channel to be stopped after Stop")
-	}
-}
-
-func TestWeComAIBotChannelWebhookPath(t *testing.T) {
-	t.Run("default path", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{}
-		cfg.Enabled = true
-		cfg.SetToken("test_token")
-		cfg.SetEncodingAESKey("testkey1234567890123456789012345678901234567")
-
-		messageBus := bus.NewMessageBus()
-		ch, _ := NewWeComAIBotChannel(cfg, messageBus)
-
-		wh, ok := ch.(channels.WebhookHandler)
-		if !ok {
-			t.Fatal("Expected channel to implement WebhookHandler")
-		}
-		expectedPath := "/webhook/wecom-aibot"
-		if wh.WebhookPath() != expectedPath {
-			t.Errorf("Expected webhook path '%s', got '%s'", expectedPath, wh.WebhookPath())
-		}
-	})
-
-	t.Run("custom path", func(t *testing.T) {
-		customPath := "/custom/webhook"
-		cfg := config.WeComAIBotConfig{}
-		cfg.Enabled = true
-		cfg.SetToken("test_token")
-		cfg.SetEncodingAESKey("testkey1234567890123456789012345678901234567")
-		cfg.WebhookPath = customPath
-
-		messageBus := bus.NewMessageBus()
-		ch, _ := NewWeComAIBotChannel(cfg, messageBus)
-
-		wh, ok := ch.(channels.WebhookHandler)
-		if !ok {
-			t.Fatal("Expected channel to implement WebhookHandler")
-		}
-		if wh.WebhookPath() != customPath {
-			t.Errorf("Expected webhook path '%s', got '%s'", customPath, wh.WebhookPath())
-		}
-	})
-}
-
-func TestWeComAIBotChannelGetStreamResponseProcessingMessage(t *testing.T) {
-	validAESKey := "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFG"
-
-	t.Run("uses default processing message", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{
-			Enabled: true,
-		}
-		cfg.SetToken("test_token")
-		cfg.SetEncodingAESKey(validAESKey)
-
-		messageBus := bus.NewMessageBus()
-		channel, err := NewWeComAIBotChannel(cfg, messageBus)
-		if err != nil {
-			t.Fatalf("Failed to create channel: %v", err)
-		}
-		ch, ok := channel.(*WeComAIBotChannel)
-		if !ok {
-			t.Fatal("Expected webhook mode channel")
-		}
-
-		task := &streamTask{
-			StreamID: "stream-default",
-			ChatID:   "chat-default",
-			Deadline: time.Now().Add(-time.Second),
-		}
-		ch.streamTasks[task.StreamID] = task
-		ch.chatTasks[task.ChatID] = []*streamTask{task}
-
-		resp := decodeStreamResponse(t, ch, ch.getStreamResponse(task, "1234567890", "nonce"))
-
-		if !resp.Stream.Finish {
-			t.Fatal("Expected finished stream response after deadline")
-		}
-		if resp.Stream.Content != config.DefaultWeComAIBotProcessingMessage {
-			t.Fatalf("Expected default processing message %q, got %q",
-				config.DefaultWeComAIBotProcessingMessage, resp.Stream.Content)
-		}
-		if !task.StreamClosed {
-			t.Fatal("Expected task stream to be marked closed")
-		}
-		if _, ok := ch.streamTasks[task.StreamID]; ok {
-			t.Fatal("Expected closed stream task to be removed from streamTasks")
-		}
-		if len(ch.chatTasks[task.ChatID]) != 1 {
-			t.Fatalf("Expected task to remain queued for response_url delivery, got %d entries",
-				len(ch.chatTasks[task.ChatID]))
-		}
-	})
-
-	t.Run("uses custom processing message", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{
-			Enabled:           true,
-			ProcessingMessage: "Please wait a moment. The result will be delivered in a follow-up message.",
-		}
-		cfg.SetToken("test_token")
-		cfg.SetEncodingAESKey(validAESKey)
-
-		messageBus := bus.NewMessageBus()
-		channel, err := NewWeComAIBotChannel(cfg, messageBus)
-		if err != nil {
-			t.Fatalf("Failed to create channel: %v", err)
-		}
-		ch, ok := channel.(*WeComAIBotChannel)
-		if !ok {
-			t.Fatal("Expected webhook mode channel")
-		}
-
-		task := &streamTask{
-			StreamID: "stream-custom",
-			ChatID:   "chat-custom",
-			Deadline: time.Now().Add(-time.Second),
-		}
-
-		resp := decodeStreamResponse(t, ch, ch.getStreamResponse(task, "1234567890", "nonce"))
-
-		if resp.Stream.Content != cfg.ProcessingMessage {
-			t.Fatalf("Expected custom processing message %q, got %q", cfg.ProcessingMessage, resp.Stream.Content)
-		}
-	})
-}
-
-func TestGenerateStreamID(t *testing.T) {
-	cfg := config.WeComAIBotConfig{}
-	cfg.Enabled = true
-	cfg.SetToken("test_token")
-	cfg.SetEncodingAESKey("testkey1234567890123456789012345678901234567")
-
-	messageBus := bus.NewMessageBus()
-	ch, _ := NewWeComAIBotChannel(cfg, messageBus)
-	webhookCh, ok := ch.(*WeComAIBotChannel)
-	if !ok {
-		t.Fatal("Expected webhook mode channel")
-	}
-
-	ids := make(map[string]bool)
-	for i := 0; i < 100; i++ {
-		id := webhookCh.generateStreamID()
-		if len(id) != 10 {
-			t.Errorf("Expected stream ID length 10, got %d", len(id))
-		}
-		if ids[id] {
-			t.Errorf("Duplicate stream ID generated: %s", id)
-		}
-		ids[id] = true
-	}
-}
-
-func TestEncryptDecrypt(t *testing.T) {
-	// Use a valid 43-character base64 key (企业微信标准格式)
-	cfg := config.WeComAIBotConfig{}
-	cfg.Enabled = true
-	cfg.SetToken("test_token")
-	cfg.SetEncodingAESKey("abcdefghijklmnopqrstuvwxyz0123456789ABCDEFG") // 43 characters
-
-	messageBus := bus.NewMessageBus()
-	ch, _ := NewWeComAIBotChannel(cfg, messageBus)
-	webhookCh, ok := ch.(*WeComAIBotChannel)
-	if !ok {
-		t.Fatal("Expected webhook mode channel")
-	}
-
-	plaintext := "Hello, World!"
-	receiveid := ""
-
-	encrypted, err := webhookCh.encryptMessage(plaintext, receiveid)
-	if err != nil {
-		t.Fatalf("Failed to encrypt message: %v", err)
-	}
-	if encrypted == "" {
-		t.Fatal("Encrypted message is empty")
-	}
-
-	// Decrypt
-	decrypted, err := decryptMessageWithVerify(encrypted, cfg.EncodingAESKey(), receiveid)
-	if err != nil {
-		t.Fatalf("Failed to decrypt message: %v", err)
-	}
-	if decrypted != plaintext {
-		t.Errorf("Expected decrypted message '%s', got '%s'", plaintext, decrypted)
-	}
-}
-
-func TestGenerateSignature(t *testing.T) {
-	token := "test_token"
-	timestamp := "1234567890"
-	nonce := "test_nonce"
-	encrypt := "encrypted_msg"
-
-	signature := computeSignature(token, timestamp, nonce, encrypt)
-	if signature == "" {
-		t.Error("Generated signature is empty")
-	}
-	if !verifySignature(token, signature, timestamp, nonce, encrypt) {
-		t.Error("Generated signature does not verify correctly")
-	}
-}
-
-func decodeStreamResponse(t *testing.T, ch *WeComAIBotChannel, encryptedResponse string) WeComAIBotStreamResponse {
-	t.Helper()
-
-	var wrapped WeComAIBotEncryptedResponse
-	if err := json.Unmarshal([]byte(encryptedResponse), &wrapped); err != nil {
-		t.Fatalf("Failed to unmarshal encrypted response: %v", err)
-	}
-
-	plaintext, err := decryptMessageWithVerify(wrapped.Encrypt, ch.config.EncodingAESKey(), "")
-	if err != nil {
-		t.Fatalf("Failed to decrypt response: %v", err)
-	}
-
-	var resp WeComAIBotStreamResponse
-	if err := json.Unmarshal([]byte(plaintext), &resp); err != nil {
-		t.Fatalf("Failed to unmarshal decrypted response: %v", err)
-	}
-
-	return resp
-}
-
-// ---- WebSocket long-connection mode tests ----
-
-func TestNewWeComAIBotChannel_WSMode(t *testing.T) {
-	t.Run("success with bot_id and secret", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{
-			Enabled: true,
-			BotID:   "test_bot_id",
-		}
-		cfg.SetSecret("test_secret")
-		messageBus := bus.NewMessageBus()
-		ch, err := NewWeComAIBotChannel(cfg, messageBus)
-		if err != nil {
-			t.Fatalf("Expected no error, got %v", err)
-		}
-		if ch == nil {
-			t.Fatal("Expected channel to be created")
-		}
-		if ch.Name() != "wecom_aibot" {
-			t.Errorf("Expected name 'wecom_aibot', got '%s'", ch.Name())
-		}
-		// WebSocket mode must NOT implement WebhookHandler.
-		if _, ok := ch.(channels.WebhookHandler); ok {
-			t.Error("WebSocket mode channel should NOT implement WebhookHandler")
-		}
-	})
-
-	t.Run("ws mode takes priority over webhook fields", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{
-			Enabled: true,
-			BotID:   "test_bot_id",
-		}
-		cfg.SetSecret("test_secret")
-		cfg.SetToken("also_set")
-		cfg.SetEncodingAESKey("testkey1234567890123456789012345678901234567")
-		messageBus := bus.NewMessageBus()
-		ch, err := NewWeComAIBotChannel(cfg, messageBus)
-		if err != nil {
-			t.Fatalf("Expected no error, got %v", err)
-		}
-		if _, ok := ch.(*WeComAIBotWSChannel); !ok {
-			t.Error("Expected WebSocket mode channel when both BotID+secret and Token+Key are set")
-		}
-	})
-
-	t.Run("error with missing bot_id", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{
-			Enabled: true,
-		}
-		cfg.SetSecret("test_secret")
-		messageBus := bus.NewMessageBus()
-		_, err := NewWeComAIBotChannel(cfg, messageBus)
-		// Missing bot_id alone means neither WS mode nor webhook mode is fully configured.
-		if err == nil {
-			t.Fatal("Expected error for missing bot_id, got nil")
-		}
-	})
-
-	t.Run("error with missing secret", func(t *testing.T) {
-		cfg := config.WeComAIBotConfig{
-			Enabled: true,
-			BotID:   "test_bot_id",
-		}
-		messageBus := bus.NewMessageBus()
-		_, err := NewWeComAIBotChannel(cfg, messageBus)
-		if err == nil {
-			t.Fatal("Expected error for missing secret, got nil")
-		}
-	})
-}
-
-func TestWeComAIBotWSChannelStartStop(t *testing.T) {
-	cfg := config.WeComAIBotConfig{
-		Enabled: true,
-		BotID:   "test_bot_id",
-	}
-	cfg.SetSecret("test_secret")
-	messageBus := bus.NewMessageBus()
-	ch, err := NewWeComAIBotChannel(cfg, messageBus)
-	if err != nil {
-		t.Fatalf("Failed to create channel: %v", err)
-	}
-
-	ctx := context.Background()
-
-	// Start launches a background goroutine; it should not block or return an error.
-	if err := ch.Start(ctx); err != nil {
-		t.Fatalf("Failed to start channel: %v", err)
-	}
-	if !ch.IsRunning() {
-		t.Error("Expected channel to be running after Start")
-	}
-
-	// Stop should work regardless of whether the WebSocket actually connected.
-	if err := ch.Stop(ctx); err != nil {
-		t.Fatalf("Failed to stop channel: %v", err)
-	}
-	if ch.IsRunning() {
-		t.Error("Expected channel to be stopped after Stop")
-	}
-}
-
-func TestGenerateRandomID(t *testing.T) {
-	ids := make(map[string]bool)
-	for i := 0; i < 200; i++ {
-		id := generateRandomID(10)
-		if len(id) != 10 {
-			t.Errorf("Expected ID length 10, got %d", len(id))
-		}
-		if ids[id] {
-			t.Errorf("Duplicate ID generated: %s", id)
-		}
-		ids[id] = true
-	}
-}
-
-func TestWSGenerateID(t *testing.T) {
-	ids := make(map[string]bool)
-	for i := 0; i < 200; i++ {
-		id := wsGenerateID()
-		if len(id) != 10 {
-			t.Errorf("Expected ID length 10, got %d", len(id))
-		}
-		if ids[id] {
-			t.Errorf("Duplicate wsGenerateID result: %s", id)
-		}
-		ids[id] = true
-	}
-}
-
-// ---- Webhook streaming fallback tests ----
-
-// makeWebhookChannel creates a started WeComAIBotChannel for testing.
-func makeWebhookChannel(t *testing.T) *WeComAIBotChannel {
-	t.Helper()
-	cfg := config.WeComAIBotConfig{
-		Enabled: true,
-	}
-	cfg.SetToken("test_token")
-	cfg.SetEncodingAESKey("abcdefghijklmnopqrstuvwxyz0123456789ABCDEFG")
-	ch, err := NewWeComAIBotChannel(cfg, bus.NewMessageBus())
-	if err != nil {
-		t.Fatalf("create channel: %v", err)
-	}
-	wc := ch.(*WeComAIBotChannel)
-	wc.ctx, wc.cancel = context.WithCancel(context.Background())
-	return wc
-}
-
-// makeStreamTask creates and registers a streamTask for testing.
-func makeStreamTask(t *testing.T, ch *WeComAIBotChannel, streamID, chatID string, deadline time.Time) *streamTask {
-	t.Helper()
-	task := &streamTask{
-		StreamID: streamID,
-		ChatID:   chatID,
-		Deadline: deadline,
-		answerCh: make(chan string, 1),
-	}
-	task.ctx, task.cancel = context.WithCancel(ch.ctx)
-	ch.taskMu.Lock()
-	ch.streamTasks[streamID] = task
-	ch.chatTasks[chatID] = append(ch.chatTasks[chatID], task)
-	ch.taskMu.Unlock()
-	return task
-}
-
-// TestGetStreamResponse_ImmediateAnswer verifies that when the agent has already
-// placed its answer in answerCh, getStreamResponse returns a finish=true response
-// and fully removes the task.
-func TestGetStreamResponse_ImmediateAnswer(t *testing.T) {
-	ch := makeWebhookChannel(t)
-	defer ch.cancel()
-
-	task := makeStreamTask(t, ch, "stream-1", "chat-1", time.Now().Add(30*time.Second))
-	task.answerCh <- "hello from agent"
-
-	result := ch.getStreamResponse(task, "ts123", "nonce123")
-	if result == "" {
-		t.Fatal("expected non-empty encrypted response")
-	}
-
-	ch.taskMu.RLock()
-	_, exists := ch.streamTasks["stream-1"]
-	ch.taskMu.RUnlock()
-	if exists {
-		t.Error("task should have been removed from streamTasks after normal finish")
-	}
-	if !task.Finished {
-		t.Error("task.Finished should be true after normal finish")
-	}
-}
-
-// TestGetStreamResponse_DeadlinePassed verifies that when the stream deadline has
-// elapsed (no agent reply yet), getStreamResponse closes the stream but keeps the
-// task alive so the response_url fallback can still deliver the answer.
-func TestGetStreamResponse_DeadlinePassed(t *testing.T) {
-	ch := makeWebhookChannel(t)
-	defer ch.cancel()
-
-	task := makeStreamTask(t, ch, "stream-2", "chat-2", time.Now().Add(-time.Millisecond))
-
-	result := ch.getStreamResponse(task, "ts456", "nonce456")
-	if result == "" {
-		t.Fatal("expected non-empty encrypted response")
-	}
-
-	ch.taskMu.RLock()
-	_, stillStreaming := ch.streamTasks["stream-2"]
-	ch.taskMu.RUnlock()
-	if stillStreaming {
-		t.Error("task should have been removed from streamTasks after deadline")
-	}
-	if !task.StreamClosed {
-		t.Error("task.StreamClosed should be true after deadline")
-	}
-	if task.Finished {
-		t.Error("task.Finished must remain false: agent reply still expected via response_url")
-	}
-}
-
-// TestGetStreamResponse_StillPending verifies that when neither the agent has
-// replied nor the deadline has passed, getStreamResponse returns without altering
-// task state (client should poll again).
-func TestGetStreamResponse_StillPending(t *testing.T) {
-	ch := makeWebhookChannel(t)
-	defer ch.cancel()
-
-	task := makeStreamTask(t, ch, "stream-3", "chat-3", time.Now().Add(30*time.Second))
-
-	result := ch.getStreamResponse(task, "ts789", "nonce789")
-	if result == "" {
-		t.Fatal("expected non-empty encrypted response")
-	}
-
-	ch.taskMu.RLock()
-	_, exists := ch.streamTasks["stream-3"]
-	ch.taskMu.RUnlock()
-	if !exists {
-		t.Error("pending task should still be in streamTasks")
-	}
-	if task.Finished || task.StreamClosed {
-		t.Error("pending task should not be finished or stream-closed")
-	}
-	// Cleanup.
-	ch.removeTask(task)
-}
--- a/pkg/channels/wecom/aibot_ws.go
+++ b/pkg/channels/wecom/aibot_ws.go
--- a/pkg/channels/wecom/aibot_ws_test.go
+++ b/pkg/channels/wecom/aibot_ws_test.go
@ -1,295 +0,0 @@
-package wecom
-
-import (
-	"bytes"
-	"context"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"strings"
-	"testing"
-
-	"github.com/sipeed/picoclaw/pkg/bus"
-	"github.com/sipeed/picoclaw/pkg/channels"
-	"github.com/sipeed/picoclaw/pkg/config"
-	"github.com/sipeed/picoclaw/pkg/media"
-)
-
-// newTestWSChannel creates a WeComAIBotWSChannel ready for unit testing.
-func newTestWSChannel(t *testing.T) *WeComAIBotWSChannel {
-	t.Helper()
-	cfg := config.WeComAIBotConfig{
-		Enabled: true,
-		BotID:   "test_bot_id",
-	}
-	cfg.SetSecret("test_secret")
-	ch, err := newWeComAIBotWSChannel(cfg, bus.NewMessageBus())
-	if err != nil {
-		t.Fatalf("create WS channel: %v", err)
-	}
-	return ch
-}
-
-// TestStoreWSMedia_NilStore verifies that storeWSMedia returns an error when no
-// MediaStore has been injected.
-func TestStoreWSMedia_NilStore(t *testing.T) {
-	ch := newTestWSChannel(t)
-	_, err := ch.storeWSMedia(context.Background(), "chat1", "msg1", "http://any", "", ".jpg")
-	if err == nil {
-		t.Fatal("expected error when no MediaStore is set")
-	}
-}
-
-// TestStoreWSMedia_HTTPError verifies that storeWSMedia propagates HTTP errors
-// from the media server.
-func TestStoreWSMedia_HTTPError(t *testing.T) {
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		http.Error(w, "not found", http.StatusNotFound)
-	}))
-	defer srv.Close()
-
-	ch := newTestWSChannel(t)
-	ch.SetMediaStore(media.NewFileMediaStore())
-
-	_, err := ch.storeWSMedia(context.Background(), "chat1", "msg1", srv.URL, "", ".jpg")
-	if err == nil {
-		t.Fatal("expected error for HTTP 404")
-	}
-}
-
-// TestStoreWSMedia_ServerUnavailable verifies that storeWSMedia returns a clear
-// error when the media server cannot be reached.
-func TestStoreWSMedia_ServerUnavailable(t *testing.T) {
-	ch := newTestWSChannel(t)
-	ch.SetMediaStore(media.NewFileMediaStore())
-
-	// Port 1 is reserved and will refuse the connection immediately.
-	_, err := ch.storeWSMedia(context.Background(), "chat1", "msg1", "http://127.0.0.1:1", "", ".jpg")
-	if err == nil {
-		t.Fatal("expected error for unreachable server")
-	}
-}
-
-// TestStoreWSMedia_Success_NoAES verifies the happy path: the media is downloaded,
-// a media ref is returned, and the file persists and is readable via Resolve until
-// ReleaseAll is called. The server returns no Content-Type, so the defaultExt is used.
-func TestStoreWSMedia_Success_NoAES(t *testing.T) {
-	imageData := bytes.Repeat([]byte("x"), 256)
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		_, _ = w.Write(imageData)
-	}))
-	defer srv.Close()
-
-	ch := newTestWSChannel(t)
-	store := media.NewFileMediaStore()
-	ch.SetMediaStore(store)
-
-	ref, err := ch.storeWSMedia(context.Background(), "chat1", "msg1", srv.URL, "", ".jpg")
-	if err != nil {
-		t.Fatalf("expected no error, got %v", err)
-	}
-	if ref == "" {
-		t.Fatal("expected non-empty ref")
-	}
-
-	// File must be accessible after storeWSMedia returns (no premature deletion).
-	path, err := store.Resolve(ref)
-	if err != nil {
-		t.Fatalf("ref should resolve: %v", err)
-	}
-	got, err := os.ReadFile(path)
-	if err != nil {
-		t.Fatalf("file should exist at %s: %v", path, err)
-	}
-	if !bytes.Equal(got, imageData) {
-		t.Errorf("content mismatch: got len=%d, want len=%d", len(got), len(imageData))
-	}
-
-	// ReleaseAll must delete the file (store owns lifecycle).
-	scope := channels.BuildMediaScope("wecom_aibot", "chat1", "msg1")
-	if err := store.ReleaseAll(scope); err != nil {
-		t.Fatalf("ReleaseAll failed: %v", err)
-	}
-	if _, err := os.Stat(path); !os.IsNotExist(err) {
-		t.Errorf("file should have been deleted by ReleaseAll, stat err: %v", err)
-	}
-}
-
-// TestStoreWSMedia_MultipleMessages verifies that concurrent media messages with
-// different msgIDs do not collide and each resolve to distinct files.
-func TestStoreWSMedia_MultipleMessages(t *testing.T) {
-	imageA := bytes.Repeat([]byte("a"), 64)
-	imageB := bytes.Repeat([]byte("b"), 64)
-
-	srvA := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		_, _ = w.Write(imageA)
-	}))
-	defer srvA.Close()
-	srvB := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		_, _ = w.Write(imageB)
-	}))
-	defer srvB.Close()
-
-	ch := newTestWSChannel(t)
-	store := media.NewFileMediaStore()
-	ch.SetMediaStore(store)
-
-	refA, err := ch.storeWSMedia(context.Background(), "chat1", "msgA", srvA.URL, "", ".jpg")
-	if err != nil {
-		t.Fatalf("storeWSMedia A: %v", err)
-	}
-	refB, err := ch.storeWSMedia(context.Background(), "chat1", "msgB", srvB.URL, "", ".jpg")
-	if err != nil {
-		t.Fatalf("storeWSMedia B: %v", err)
-	}
-	if refA == refB {
-		t.Fatal("distinct messages must produce distinct refs")
-	}
-
-	pathA, _ := store.Resolve(refA)
-	pathB, _ := store.Resolve(refB)
-	if pathA == pathB {
-		t.Fatal("distinct messages must be stored at distinct paths")
-	}
-
-	gotA, _ := os.ReadFile(pathA)
-	gotB, _ := os.ReadFile(pathB)
-	if !bytes.Equal(gotA, imageA) {
-		t.Errorf("content mismatch for message A")
-	}
-	if !bytes.Equal(gotB, imageB) {
-		t.Errorf("content mismatch for message B")
-	}
-}
-
-// TestStoreWSMedia_ContentTypeExt verifies that the file extension is inferred
-// from the HTTP Content-Type header and the defaultExt fallback is used when the
-// type is absent or unrecognized.
-func TestStoreWSMedia_ContentTypeExt(t *testing.T) {
-	tests := []struct {
-		contentType string
-		wantExt     string
-	}{
-		{"image/jpeg", ".jpg"},
-		{"image/png", ".png"},
-		{"video/mp4", ".mp4"},
-		{"application/pdf", ".pdf"},
-		{"application/zip", ".zip"},
-		// With parameters stripped.
-		{"video/mp4; codecs=avc1", ".mp4"},
-		// Unknown type → falls back to defaultExt.
-		{"", ""},
-		{"application/octet-stream", ""},
-	}
-	for _, tc := range tests {
-		got := wsMediaExtFromContentType(tc.contentType)
-		if got != tc.wantExt {
-			t.Errorf("wsMediaExtFromContentType(%q) = %q, want %q", tc.contentType, got, tc.wantExt)
-		}
-	}
-
-	// End-to-end: server returns Content-Type: video/mp4, defaultExt is .bin.
-	// The stored file should carry the .mp4 extension, not .bin.
-	payload := bytes.Repeat([]byte("v"), 128)
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		w.Header().Set("Content-Type", "video/mp4")
-		w.WriteHeader(http.StatusOK)
-		_, _ = w.Write(payload)
-	}))
-	defer srv.Close()
-
-	ch := newTestWSChannel(t)
-	store := media.NewFileMediaStore()
-	ch.SetMediaStore(store)
-
-	ref, err := ch.storeWSMedia(context.Background(), "chat1", "vid1", srv.URL, "", ".bin")
-	if err != nil {
-		t.Fatalf("storeWSMedia: %v", err)
-	}
-	path, err := store.Resolve(ref)
-	if err != nil {
-		t.Fatalf("resolve: %v", err)
-	}
-	if ext := path[len(path)-4:]; ext != ".mp4" {
-		t.Errorf("expected .mp4 extension from Content-Type, got %q", ext)
-	}
-}
-
-// TestSplitWSContent verifies byte-aware splitting of stream content.
-func TestSplitWSContent(t *testing.T) {
-	t.Run("short content is not split", func(t *testing.T) {
-		chunks := splitWSContent("hello", 20480)
-		if len(chunks) != 1 || chunks[0] != "hello" {
-			t.Fatalf("unexpected chunks: %v", chunks)
-		}
-	})
-
-	t.Run("ASCII content split at byte boundary", func(t *testing.T) {
-		// Build a string just over the limit.
-		content := strings.Repeat("a", 20481)
-		chunks := splitWSContent(content, 20480)
-		if len(chunks) < 2 {
-			t.Fatalf("expected >= 2 chunks, got %d", len(chunks))
-		}
-		for i, c := range chunks {
-			if len(c) > 20480 {
-				t.Errorf("chunk %d has %d bytes, want <= 20480", i, len(c))
-			}
-		}
-		// Reassembled content must equal the original (possibly without leading
-		// whitespace that splitWSContent trims between chunks).
-		joined := strings.Join(chunks, "")
-		if len(joined) < len(content)-len(chunks) {
-			t.Errorf("joined length %d too short (original %d)", len(joined), len(content))
-		}
-	})
-
-	t.Run("CJK content split within byte limit", func(t *testing.T) {
-		// Each CJK rune is 3 bytes in UTF-8.
-		// 7000 CJK chars = 21000 bytes, which exceeds 20480.
-		content := strings.Repeat("\u4e2d", 7000)
-		chunks := splitWSContent(content, 20480)
-		if len(chunks) < 2 {
-			t.Fatalf("expected >= 2 chunks for 21000-byte CJK content, got %d", len(chunks))
-		}
-		for i, c := range chunks {
-			if len(c) > 20480 {
-				t.Errorf("chunk %d has %d bytes, want <= 20480", i, len(c))
-			}
-			// Every chunk must be valid UTF-8.
-			if !strings.ContainsRune(c, '\u4e2d') && len(c) > 0 {
-				// quick plausibility check — content was pure CJK
-			}
-		}
-	})
-}
-
-// TestSplitAtByteBoundary verifies the last-resort byte-boundary splitter.
-func TestSplitAtByteBoundary(t *testing.T) {
-	t.Run("ASCII fits in one chunk", func(t *testing.T) {
-		parts := splitAtByteBoundary("hello world", 100)
-		if len(parts) != 1 {
-			t.Fatalf("expected 1 part, got %d", len(parts))
-		}
-	})
-
-	t.Run("splits at byte boundary, never mid-rune", func(t *testing.T) {
-		// 10 CJK characters = 30 bytes; split at 20 bytes.
-		s := strings.Repeat("\u6587", 10) // 10 × 3 bytes = 30 bytes
-		parts := splitAtByteBoundary(s, 20)
-		for i, p := range parts {
-			if len(p) > 20 {
-				t.Errorf("part %d has %d bytes, want <= 20", i, len(p))
-			}
-			// Must be valid UTF-8 (no torn multi-byte sequences).
-			for j, r := range p {
-				if r == '\uFFFD' {
-					t.Errorf("part %d has replacement rune at position %d: torn UTF-8", i, j)
-				}
-			}
-		}
-	})
-}
--- a/pkg/channels/wecom/app.go
+++ b/pkg/channels/wecom/app.go
@ -1,756 +0,0 @@
-package wecom
-
-import (
-	"bytes"
-	"context"
-	"encoding/json"
-	"encoding/xml"
-	"fmt"
-	"io"
-	"mime/multipart"
-	"net/http"
-	"net/url"
-	"os"
-	"path/filepath"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/sipeed/picoclaw/pkg/bus"
-	"github.com/sipeed/picoclaw/pkg/channels"
-	"github.com/sipeed/picoclaw/pkg/config"
-	"github.com/sipeed/picoclaw/pkg/identity"
-	"github.com/sipeed/picoclaw/pkg/logger"
-	"github.com/sipeed/picoclaw/pkg/utils"
-)
-
-const (
-	wecomAPIBase = "https://qyapi.weixin.qq.com"
-)
-
-// WeComAppChannel implements the Channel interface for WeCom App (企业微信自建应用)
-type WeComAppChannel struct {
-	*channels.BaseChannel
-	config        config.WeComAppConfig
-	client        *http.Client
-	accessToken   string
-	tokenExpiry   time.Time
-	tokenMu       sync.RWMutex
-	ctx           context.Context
-	cancel        context.CancelFunc
-	processedMsgs *MessageDeduplicator
-}
-
-// WeComXMLMessage represents the XML message structure from WeCom
-type WeComXMLMessage struct {
-	XMLName      xml.Name `xml:"xml"`
-	ToUserName   string   `xml:"ToUserName"`
-	FromUserName string   `xml:"FromUserName"`
-	CreateTime   int64    `xml:"CreateTime"`
-	MsgType      string   `xml:"MsgType"`
-	Content      string   `xml:"Content"`
-	MsgId        int64    `xml:"MsgId"`
-	AgentID      int64    `xml:"AgentID"`
-	PicUrl       string   `xml:"PicUrl"`
-	MediaId      string   `xml:"MediaId"`
-	Format       string   `xml:"Format"`
-	ThumbMediaId string   `xml:"ThumbMediaId"`
-	LocationX    float64  `xml:"Location_X"`
-	LocationY    float64  `xml:"Location_Y"`
-	Scale        int      `xml:"Scale"`
-	Label        string   `xml:"Label"`
-	Title        string   `xml:"Title"`
-	Description  string   `xml:"Description"`
-	Url          string   `xml:"Url"`
-	Event        string   `xml:"Event"`
-	EventKey     string   `xml:"EventKey"`
-}
-
-// WeComTextMessage represents text message for sending
-type WeComTextMessage struct {
-	ToUser  string `json:"touser"`
-	MsgType string `json:"msgtype"`
-	AgentID int64  `json:"agentid"`
-	Text    struct {
-		Content string `json:"content"`
-	} `json:"text"`
-	Safe int `json:"safe,omitempty"`
-}
-
-// WeComMarkdownMessage represents markdown message for sending
-type WeComMarkdownMessage struct {
-	ToUser   string `json:"touser"`
-	MsgType  string `json:"msgtype"`
-	AgentID  int64  `json:"agentid"`
-	Markdown struct {
-		Content string `json:"content"`
-	} `json:"markdown"`
-}
-
-// WeComImageMessage represents image message for sending
-type WeComImageMessage struct {
-	ToUser  string `json:"touser"`
-	MsgType string `json:"msgtype"`
-	AgentID int64  `json:"agentid"`
-	Image   struct {
-		MediaID string `json:"media_id"`
-	} `json:"image"`
-}
-
-// WeComAccessTokenResponse represents the access token API response
-type WeComAccessTokenResponse struct {
-	ErrCode     int    `json:"errcode"`
-	ErrMsg      string `json:"errmsg"`
-	AccessToken string `json:"access_token"`
-	ExpiresIn   int    `json:"expires_in"`
-}
-
-// WeComSendMessageResponse represents the send message API response
-type WeComSendMessageResponse struct {
-	ErrCode      int    `json:"errcode"`
-	ErrMsg       string `json:"errmsg"`
-	InvalidUser  string `json:"invaliduser"`
-	InvalidParty string `json:"invalidparty"`
-	InvalidTag   string `json:"invalidtag"`
-}
-
-// PKCS7Padding adds PKCS7 padding
-type PKCS7Padding struct{}
-
-// NewWeComAppChannel creates a new WeCom App channel instance
-func NewWeComAppChannel(cfg config.WeComAppConfig, messageBus *bus.MessageBus) (*WeComAppChannel, error) {
-	if cfg.CorpID == "" || cfg.CorpSecret() == "" || cfg.AgentID == 0 {
-		return nil, fmt.Errorf("wecom_app corp_id, corp_secret and agent_id are required")
-	}
-
-	base := channels.NewBaseChannel("wecom_app", cfg, messageBus, cfg.AllowFrom,
-		channels.WithMaxMessageLength(2048),
-		channels.WithGroupTrigger(cfg.GroupTrigger),
-		channels.WithReasoningChannelID(cfg.ReasoningChannelID),
-	)
-
-	// Client timeout must be >= the configured ReplyTimeout so the
-	// per-request context deadline is always the effective limit.
-	clientTimeout := 30 * time.Second
-	if d := time.Duration(cfg.ReplyTimeout) * time.Second; d > clientTimeout {
-		clientTimeout = d
-	}
-
-	ctx, cancel := context.WithCancel(context.Background())
-	return &WeComAppChannel{
-		BaseChannel:   base,
-		config:        cfg,
-		client:        &http.Client{Timeout: clientTimeout},
-		ctx:           ctx,
-		cancel:        cancel,
-		processedMsgs: NewMessageDeduplicator(wecomMaxProcessedMessages),
-	}, nil
-}
-
-// Name returns the channel name
-func (c *WeComAppChannel) Name() string {
-	return "wecom_app"
-}
-
-// Start initializes the WeCom App channel
-func (c *WeComAppChannel) Start(ctx context.Context) error {
-	logger.InfoC("wecom_app", "Starting WeCom App channel...")
-
-	// Cancel the context created in the constructor to avoid a resource leak.
-	if c.cancel != nil {
-		c.cancel()
-	}
-	c.ctx, c.cancel = context.WithCancel(ctx)
-
-	// Get initial access token
-	if err := c.refreshAccessToken(); err != nil {
-		logger.WarnCF("wecom_app", "Failed to get initial access token", map[string]any{
-			"error": err.Error(),
-		})
-	}
-
-	// Start token refresh goroutine
-	go c.tokenRefreshLoop()
-
-	c.SetRunning(true)
-	logger.InfoC("wecom_app", "WeCom App channel started")
-
-	return nil
-}
-
-// Stop gracefully stops the WeCom App channel
-func (c *WeComAppChannel) Stop(ctx context.Context) error {
-	logger.InfoC("wecom_app", "Stopping WeCom App channel...")
-
-	if c.cancel != nil {
-		c.cancel()
-	}
-
-	c.SetRunning(false)
-	logger.InfoC("wecom_app", "WeCom App channel stopped")
-	return nil
-}
-
-// Send sends a message to WeCom user proactively using access token
-func (c *WeComAppChannel) Send(ctx context.Context, msg bus.OutboundMessage) error {
-	if !c.IsRunning() {
-		return channels.ErrNotRunning
-	}
-
-	accessToken := c.getAccessToken()
-	if accessToken == "" {
-		return fmt.Errorf("no valid access token available")
-	}
-
-	logger.DebugCF("wecom_app", "Sending message", map[string]any{
-		"chat_id": msg.ChatID,
-		"preview": utils.Truncate(msg.Content, 100),
-	})
-
-	return c.sendTextMessage(ctx, accessToken, msg.ChatID, msg.Content)
-}
-
-// SendMedia implements the channels.MediaSender interface.
-func (c *WeComAppChannel) SendMedia(ctx context.Context, msg bus.OutboundMediaMessage) error {
-	if !c.IsRunning() {
-		return channels.ErrNotRunning
-	}
-
-	accessToken := c.getAccessToken()
-	if accessToken == "" {
-		return fmt.Errorf("no valid access token available: %w", channels.ErrTemporary)
-	}
-
-	store := c.GetMediaStore()
-	if store == nil {
-		return fmt.Errorf("no media store available: %w", channels.ErrSendFailed)
-	}
-
-	for _, part := range msg.Parts {
-		localPath, err := store.Resolve(part.Ref)
-		if err != nil {
-			logger.ErrorCF("wecom_app", "Failed to resolve media ref", map[string]any{
-				"ref":   part.Ref,
-				"error": err.Error(),
-			})
-			continue
-		}
-
-		// Map part type to WeCom media type
-		var mediaType string
-		switch part.Type {
-		case "image":
-			mediaType = "image"
-		case "audio":
-			mediaType = "voice"
-		case "video":
-			mediaType = "video"
-		default:
-			mediaType = "file"
-		}
-
-		// Upload media to get media_id
-		mediaID, err := c.uploadMedia(ctx, accessToken, mediaType, localPath)
-		if err != nil {
-			logger.ErrorCF("wecom_app", "Failed to upload media", map[string]any{
-				"type":  mediaType,
-				"error": err.Error(),
-			})
-			// Fallback: send caption as text
-			if part.Caption != "" {
-				_ = c.sendTextMessage(ctx, accessToken, msg.ChatID, part.Caption)
-			}
-			continue
-		}
-
-		// Send media message using the media_id
-		if mediaType == "image" {
-			err = c.sendImageMessage(ctx, accessToken, msg.ChatID, mediaID)
-		} else {
-			// For non-image types, send as text fallback with caption
-			caption := part.Caption
-			if caption == "" {
-				caption = fmt.Sprintf("[%s: %s]", part.Type, part.Filename)
-			}
-			err = c.sendTextMessage(ctx, accessToken, msg.ChatID, caption)
-		}
-
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-// uploadMedia uploads a local file to WeCom temporary media storage.
-func (c *WeComAppChannel) uploadMedia(ctx context.Context, accessToken, mediaType, localPath string) (string, error) {
-	apiURL := fmt.Sprintf("%s/cgi-bin/media/upload?access_token=%s&type=%s",
-		wecomAPIBase, url.QueryEscape(accessToken), url.QueryEscape(mediaType))
-
-	file, err := os.Open(localPath)
-	if err != nil {
-		return "", fmt.Errorf("failed to open file: %w", err)
-	}
-	defer file.Close()
-
-	body := &bytes.Buffer{}
-	writer := multipart.NewWriter(body)
-
-	filename := filepath.Base(localPath)
-	formFile, err := writer.CreateFormFile("media", filename)
-	if err != nil {
-		return "", fmt.Errorf("failed to create form file: %w", err)
-	}
-
-	if _, err = io.Copy(formFile, file); err != nil {
-		return "", fmt.Errorf("failed to copy file content: %w", err)
-	}
-	writer.Close()
-
-	req, err := http.NewRequestWithContext(ctx, http.MethodPost, apiURL, body)
-	if err != nil {
-		return "", fmt.Errorf("failed to create request: %w", err)
-	}
-	req.Header.Set("Content-Type", writer.FormDataContentType())
-
-	resp, err := c.client.Do(req)
-	if err != nil {
-		return "", channels.ClassifyNetError(err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != http.StatusOK {
-		respBody, readErr := io.ReadAll(resp.Body)
-		if readErr != nil {
-			return "", channels.ClassifySendError(
-				resp.StatusCode,
-				fmt.Errorf("reading wecom upload error response: %w", readErr),
-			)
-		}
-		return "", channels.ClassifySendError(
-			resp.StatusCode,
-			fmt.Errorf("wecom upload error: %s", string(respBody)),
-		)
-	}
-
-	var result struct {
-		ErrCode int    `json:"errcode"`
-		ErrMsg  string `json:"errmsg"`
-		MediaID string `json:"media_id"`
-	}
-	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
-		return "", fmt.Errorf("failed to parse upload response: %w", err)
-	}
-
-	if result.ErrCode != 0 {
-		return "", fmt.Errorf("upload API error: %s (code: %d)", result.ErrMsg, result.ErrCode)
-	}
-
-	return result.MediaID, nil
-}
-
-// sendWeComMessage marshals payload and POSTs it to the WeCom message API.
-func (c *WeComAppChannel) sendWeComMessage(ctx context.Context, accessToken string, payload any) error {
-	apiURL := fmt.Sprintf("%s/cgi-bin/message/send?access_token=%s", wecomAPIBase, accessToken)
-
-	jsonData, err := json.Marshal(payload)
-	if err != nil {
-		return fmt.Errorf("failed to marshal message: %w", err)
-	}
-
-	timeout := c.config.ReplyTimeout
-	if timeout <= 0 {
-		timeout = 5
-	}
-
-	reqCtx, cancel := context.WithTimeout(ctx, time.Duration(timeout)*time.Second)
-	defer cancel()
-
-	req, err := http.NewRequestWithContext(reqCtx, http.MethodPost, apiURL, bytes.NewBuffer(jsonData))
-	if err != nil {
-		return fmt.Errorf("failed to create request: %w", err)
-	}
-	req.Header.Set("Content-Type", "application/json")
-
-	resp, err := c.client.Do(req)
-	if err != nil {
-		return channels.ClassifyNetError(err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != http.StatusOK {
-		respBody, readErr := io.ReadAll(resp.Body)
-		if readErr != nil {
-			return channels.ClassifySendError(
-				resp.StatusCode,
-				fmt.Errorf("reading wecom_app error response: %w", readErr),
-			)
-		}
-		return channels.ClassifySendError(
-			resp.StatusCode,
-			fmt.Errorf("wecom_app API error: %s", string(respBody)),
-		)
-	}
-
-	respBody, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return fmt.Errorf("failed to read response: %w", err)
-	}
-
-	var sendResp WeComSendMessageResponse
-	if err := json.Unmarshal(respBody, &sendResp); err != nil {
-		return fmt.Errorf("failed to parse response: %w", err)
-	}
-
-	if sendResp.ErrCode != 0 {
-		return fmt.Errorf("API error: %s (code: %d)", sendResp.ErrMsg, sendResp.ErrCode)
-	}
-
-	return nil
-}
-
-// sendImageMessage sends an image message using a media_id.
-func (c *WeComAppChannel) sendImageMessage(ctx context.Context, accessToken, userID, mediaID string) error {
-	msg := WeComImageMessage{
-		ToUser:  userID,
-		MsgType: "image",
-		AgentID: c.config.AgentID,
-	}
-	msg.Image.MediaID = mediaID
-	return c.sendWeComMessage(ctx, accessToken, msg)
-}
-
-// WebhookPath returns the path for registering on the shared HTTP server.
-func (c *WeComAppChannel) WebhookPath() string {
-	if c.config.WebhookPath != "" {
-		return c.config.WebhookPath
-	}
-	return "/webhook/wecom-app"
-}
-
-// ServeHTTP implements http.Handler for the shared HTTP server.
-func (c *WeComAppChannel) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	c.handleWebhook(w, r)
-}
-
-// HealthPath returns the health check endpoint path.
-func (c *WeComAppChannel) HealthPath() string {
-	return "/health/wecom-app"
-}
-
-// HealthHandler handles health check requests.
-func (c *WeComAppChannel) HealthHandler(w http.ResponseWriter, r *http.Request) {
-	c.handleHealth(w, r)
-}
-
-// handleWebhook handles incoming webhook requests from WeCom
-func (c *WeComAppChannel) handleWebhook(w http.ResponseWriter, r *http.Request) {
-	ctx := r.Context()
-
-	// Log all incoming requests for debugging
-	logger.DebugCF("wecom_app", "Received webhook request", map[string]any{
-		"method": r.Method,
-		"url":    r.URL.String(),
-		"path":   r.URL.Path,
-		"query":  r.URL.RawQuery,
-	})
-
-	if r.Method == http.MethodGet {
-		// Handle verification request
-		c.handleVerification(ctx, w, r)
-		return
-	}
-
-	if r.Method == http.MethodPost {
-		// Handle message callback
-		c.handleMessageCallback(ctx, w, r)
-		return
-	}
-
-	logger.WarnCF("wecom_app", "Method not allowed", map[string]any{
-		"method": r.Method,
-	})
-	http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
-}
-
-// handleVerification handles the URL verification request from WeCom
-func (c *WeComAppChannel) handleVerification(ctx context.Context, w http.ResponseWriter, r *http.Request) {
-	query := r.URL.Query()
-	msgSignature := query.Get("msg_signature")
-	timestamp := query.Get("timestamp")
-	nonce := query.Get("nonce")
-	echostr := query.Get("echostr")
-
-	logger.DebugCF("wecom_app", "Handling verification request", map[string]any{
-		"msg_signature": msgSignature,
-		"timestamp":     timestamp,
-		"nonce":         nonce,
-		"echostr":       echostr,
-		"corp_id":       c.config.CorpID,
-	})
-
-	if msgSignature == "" || timestamp == "" || nonce == "" || echostr == "" {
-		logger.ErrorC("wecom_app", "Missing parameters in verification request")
-		http.Error(w, "Missing parameters", http.StatusBadRequest)
-		return
-	}
-
-	// Verify signature
-	if !verifySignature(c.config.Token(), msgSignature, timestamp, nonce, echostr) {
-		logger.WarnCF("wecom_app", "Signature verification failed", map[string]any{
-			"token":         c.config.Token(),
-			"msg_signature": msgSignature,
-			"timestamp":     timestamp,
-			"nonce":         nonce,
-		})
-		http.Error(w, "Invalid signature", http.StatusForbidden)
-		return
-	}
-
-	logger.DebugC("wecom_app", "Signature verification passed")
-
-	// Decrypt echostr with CorpID verification
-	// For WeCom App (自建应用), receiveid should be corp_id
-	logger.DebugCF("wecom_app", "Attempting to decrypt echostr", map[string]any{
-		"encoding_aes_key": c.config.EncodingAESKey(),
-		"corp_id":          c.config.CorpID,
-	})
-	decryptedEchoStr, err := decryptMessageWithVerify(echostr, c.config.EncodingAESKey(), c.config.CorpID)
-	if err != nil {
-		logger.ErrorCF("wecom_app", "Failed to decrypt echostr", map[string]any{
-			"error":            err.Error(),
-			"encoding_aes_key": c.config.EncodingAESKey,
-			"corp_id":          c.config.CorpID,
-		})
-		http.Error(w, "Decryption failed", http.StatusInternalServerError)
-		return
-	}
-
-	logger.DebugCF("wecom_app", "Successfully decrypted echostr", map[string]any{
-		"decrypted": decryptedEchoStr,
-	})
-
-	// Remove BOM and whitespace as per WeCom documentation
-	// The response must be plain text without quotes, BOM, or newlines
-	decryptedEchoStr = strings.TrimSpace(decryptedEchoStr)
-	decryptedEchoStr = strings.TrimPrefix(decryptedEchoStr, "\xef\xbb\xbf") // Remove UTF-8 BOM
-	w.Write([]byte(decryptedEchoStr))
-}
-
-// handleMessageCallback handles incoming messages from WeCom
-func (c *WeComAppChannel) handleMessageCallback(ctx context.Context, w http.ResponseWriter, r *http.Request) {
-	query := r.URL.Query()
-	msgSignature := query.Get("msg_signature")
-	timestamp := query.Get("timestamp")
-	nonce := query.Get("nonce")
-
-	if msgSignature == "" || timestamp == "" || nonce == "" {
-		http.Error(w, "Missing parameters", http.StatusBadRequest)
-		return
-	}
-
-	// Read request body
-	body, err := io.ReadAll(r.Body)
-	if err != nil {
-		http.Error(w, "Failed to read body", http.StatusBadRequest)
-		return
-	}
-	defer r.Body.Close()
-
-	// Parse XML to get encrypted message
-	var encryptedMsg struct {
-		XMLName    xml.Name `xml:"xml"`
-		ToUserName string   `xml:"ToUserName"`
-		Encrypt    string   `xml:"Encrypt"`
-		AgentID    string   `xml:"AgentID"`
-	}
-
-	if err = xml.Unmarshal(body, &encryptedMsg); err != nil {
-		logger.ErrorCF("wecom_app", "Failed to parse XML", map[string]any{
-			"error": err.Error(),
-		})
-		http.Error(w, "Invalid XML", http.StatusBadRequest)
-		return
-	}
-
-	// Verify signature
-	if !verifySignature(c.config.Token(), msgSignature, timestamp, nonce, encryptedMsg.Encrypt) {
-		logger.WarnC("wecom_app", "Message signature verification failed")
-		http.Error(w, "Invalid signature", http.StatusForbidden)
-		return
-	}
-
-	// Decrypt message with CorpID verification
-	// For WeCom App (自建应用), receiveid should be corp_id
-	decryptedMsg, err := decryptMessageWithVerify(encryptedMsg.Encrypt, c.config.EncodingAESKey(), c.config.CorpID)
-	if err != nil {
-		logger.ErrorCF("wecom_app", "Failed to decrypt message", map[string]any{
-			"error": err.Error(),
-		})
-		http.Error(w, "Decryption failed", http.StatusInternalServerError)
-		return
-	}
-
-	// Parse decrypted XML message
-	var msg WeComXMLMessage
-	if err := xml.Unmarshal([]byte(decryptedMsg), &msg); err != nil {
-		logger.ErrorCF("wecom_app", "Failed to parse decrypted message", map[string]any{
-			"error": err.Error(),
-		})
-		http.Error(w, "Invalid message format", http.StatusBadRequest)
-		return
-	}
-
-	// Process the message with the channel's long-lived context (not the HTTP
-	// request context, which is canceled as soon as we return the response).
-	go c.processMessage(c.ctx, msg)
-
-	// Return success response immediately
-	// WeCom App requires response within configured timeout (default 5 seconds)
-	w.Write([]byte("success"))
-}
-
-// processMessage processes the received message
-func (c *WeComAppChannel) processMessage(ctx context.Context, msg WeComXMLMessage) {
-	// Skip non-text messages for now (can be extended)
-	if msg.MsgType != "text" && msg.MsgType != "image" && msg.MsgType != "voice" {
-		logger.DebugCF("wecom_app", "Skipping non-supported message type", map[string]any{
-			"msg_type": msg.MsgType,
-		})
-		return
-	}
-
-	// Message deduplication: Use msg_id to prevent duplicate processing
-	// As per WeCom documentation, use msg_id for deduplication
-	msgID := fmt.Sprintf("%d", msg.MsgId)
-	if !c.processedMsgs.MarkMessageProcessed(msgID) {
-		logger.DebugCF("wecom_app", "Skipping duplicate message", map[string]any{
-			"msg_id": msgID,
-		})
-		return
-	}
-
-	senderID := msg.FromUserName
-	chatID := senderID // WeCom App uses user ID as chat ID for direct messages
-
-	// Build metadata
-	// WeCom App only supports direct messages (private chat)
-	peer := bus.Peer{Kind: "direct", ID: senderID}
-	messageID := fmt.Sprintf("%d", msg.MsgId)
-
-	metadata := map[string]string{
-		"msg_type":    msg.MsgType,
-		"msg_id":      fmt.Sprintf("%d", msg.MsgId),
-		"agent_id":    fmt.Sprintf("%d", msg.AgentID),
-		"platform":    "wecom_app",
-		"media_id":    msg.MediaId,
-		"create_time": fmt.Sprintf("%d", msg.CreateTime),
-	}
-
-	content := msg.Content
-
-	logger.DebugCF("wecom_app", "Received message", map[string]any{
-		"sender_id": senderID,
-		"msg_type":  msg.MsgType,
-		"preview":   utils.Truncate(content, 50),
-	})
-
-	// Build sender info
-	appSender := bus.SenderInfo{
-		Platform:    "wecom",
-		PlatformID:  senderID,
-		CanonicalID: identity.BuildCanonicalID("wecom", senderID),
-	}
-
-	// Handle the message through the base channel
-	c.HandleMessage(ctx, peer, messageID, senderID, chatID, content, nil, metadata, appSender)
-}
-
-// tokenRefreshLoop periodically refreshes the access token
-func (c *WeComAppChannel) tokenRefreshLoop() {
-	ticker := time.NewTicker(5 * time.Minute)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-c.ctx.Done():
-			return
-		case <-ticker.C:
-			if err := c.refreshAccessToken(); err != nil {
-				logger.ErrorCF("wecom_app", "Failed to refresh access token", map[string]any{
-					"error": err.Error(),
-				})
-			}
-		}
-	}
-}
-
-// refreshAccessToken gets a new access token from WeCom API
-func (c *WeComAppChannel) refreshAccessToken() error {
-	apiURL := fmt.Sprintf("%s/cgi-bin/gettoken?corpid=%s&corpsecret=%s",
-		wecomAPIBase, url.QueryEscape(c.config.CorpID), url.QueryEscape(c.config.CorpSecret()))
-
-	resp, err := http.Get(apiURL)
-	if err != nil {
-		return fmt.Errorf("failed to request access token: %w", err)
-	}
-	defer resp.Body.Close()
-
-	body, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return fmt.Errorf("failed to read response: %w", err)
-	}
-
-	var tokenResp WeComAccessTokenResponse
-	if err := json.Unmarshal(body, &tokenResp); err != nil {
-		return fmt.Errorf("failed to parse response: %w", err)
-	}
-
-	if tokenResp.ErrCode != 0 {
-		return fmt.Errorf("API error: %s (code: %d)", tokenResp.ErrMsg, tokenResp.ErrCode)
-	}
-
-	c.tokenMu.Lock()
-	c.accessToken = tokenResp.AccessToken
-	c.tokenExpiry = time.Now().Add(time.Duration(tokenResp.ExpiresIn-300) * time.Second) // Refresh 5 minutes early
-	c.tokenMu.Unlock()
-
-	logger.DebugC("wecom_app", "Access token refreshed successfully")
-	return nil
-}
-
-// getAccessToken returns the current valid access token
-func (c *WeComAppChannel) getAccessToken() string {
-	c.tokenMu.RLock()
-	defer c.tokenMu.RUnlock()
-
-	if time.Now().After(c.tokenExpiry) {
-		return ""
-	}
-
-	return c.accessToken
-}
-
-// sendTextMessage sends a text message to a user.
-func (c *WeComAppChannel) sendTextMessage(ctx context.Context, accessToken, userID, content string) error {
-	msg := WeComTextMessage{
-		ToUser:  userID,
-		MsgType: "text",
-		AgentID: c.config.AgentID,
-	}
-	msg.Text.Content = content
-	return c.sendWeComMessage(ctx, accessToken, msg)
-}
-
-// handleHealth handles health check requests
-func (c *WeComAppChannel) handleHealth(w http.ResponseWriter, r *http.Request) {
-	status := map[string]any{
-		"status":    "ok",
-		"running":   c.IsRunning(),
-		"has_token": c.getAccessToken() != "",
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(status)
-}
--- a/pkg/channels/wecom/app_test.go
+++ b/pkg/channels/wecom/app_test.go
--- a/pkg/channels/wecom/bot.go
+++ b/pkg/channels/wecom/bot.go
@ -1,499 +0,0 @@
-package wecom
-
-import (
-	"bytes"
-	"context"
-	"encoding/json"
-	"encoding/xml"
-	"fmt"
-	"io"
-	"net/http"
-	"strings"
-	"time"
-
-	"github.com/sipeed/picoclaw/pkg/bus"
-	"github.com/sipeed/picoclaw/pkg/channels"
-	"github.com/sipeed/picoclaw/pkg/config"
-	"github.com/sipeed/picoclaw/pkg/identity"
-	"github.com/sipeed/picoclaw/pkg/logger"
-	"github.com/sipeed/picoclaw/pkg/utils"
-)
-
-// WeComBotChannel implements the Channel interface for WeCom Bot (企业微信智能机器人)
-// Uses webhook callback mode - simpler than WeCom App but only supports passive replies
-type WeComBotChannel struct {
-	*channels.BaseChannel
-	config        config.WeComConfig
-	client        *http.Client
-	ctx           context.Context
-	cancel        context.CancelFunc
-	processedMsgs *MessageDeduplicator
-}
-
-// WeComBotMessage represents the JSON message structure from WeCom Bot (AIBOT)
-type WeComBotMessage struct {
-	MsgID    string `json:"msgid"`
-	AIBotID  string `json:"aibotid"`
-	ChatID   string `json:"chatid"`   // Session ID, only present for group chats
-	ChatType string `json:"chattype"` // "single" for DM, "group" for group chat
-	From     struct {
-		UserID string `json:"userid"`
-	} `json:"from"`
-	ResponseURL string `json:"response_url"`
-	MsgType     string `json:"msgtype"` // text, image, voice, file, mixed
-	Text        struct {
-		Content string `json:"content"`
-	} `json:"text"`
-	Image struct {
-		URL string `json:"url"`
-	} `json:"image"`
-	Voice struct {
-		Content string `json:"content"` // Voice to text content
-	} `json:"voice"`
-	File struct {
-		URL string `json:"url"`
-	} `json:"file"`
-	Mixed struct {
-		MsgItem []struct {
-			MsgType string `json:"msgtype"`
-			Text    struct {
-				Content string `json:"content"`
-			} `json:"text"`
-			Image struct {
-				URL string `json:"url"`
-			} `json:"image"`
-		} `json:"msg_item"`
-	} `json:"mixed"`
-	Quote struct {
-		MsgType string `json:"msgtype"`
-		Text    struct {
-			Content string `json:"content"`
-		} `json:"text"`
-	} `json:"quote"`
-}
-
-// WeComBotReplyMessage represents the reply message structure
-type WeComBotReplyMessage struct {
-	MsgType string `json:"msgtype"`
-	Text    struct {
-		Content string `json:"content"`
-	} `json:"text,omitempty"`
-}
-
-// NewWeComBotChannel creates a new WeCom Bot channel instance
-func NewWeComBotChannel(cfg config.WeComConfig, messageBus *bus.MessageBus) (*WeComBotChannel, error) {
-	if cfg.Token() == "" || cfg.WebhookURL == "" {
-		return nil, fmt.Errorf("wecom token and webhook_url are required")
-	}
-
-	base := channels.NewBaseChannel("wecom", cfg, messageBus, cfg.AllowFrom,
-		channels.WithMaxMessageLength(2048),
-		channels.WithGroupTrigger(cfg.GroupTrigger),
-		channels.WithReasoningChannelID(cfg.ReasoningChannelID),
-	)
-
-	// Client timeout must be >= the configured ReplyTimeout so the
-	// per-request context deadline is always the effective limit.
-	clientTimeout := 30 * time.Second
-	if d := time.Duration(cfg.ReplyTimeout) * time.Second; d > clientTimeout {
-		clientTimeout = d
-	}
-
-	ctx, cancel := context.WithCancel(context.Background())
-	return &WeComBotChannel{
-		BaseChannel:   base,
-		config:        cfg,
-		client:        &http.Client{Timeout: clientTimeout},
-		ctx:           ctx,
-		cancel:        cancel,
-		processedMsgs: NewMessageDeduplicator(wecomMaxProcessedMessages),
-	}, nil
-}
-
-// Name returns the channel name
-func (c *WeComBotChannel) Name() string {
-	return "wecom"
-}
-
-// Start initializes the WeCom Bot channel
-func (c *WeComBotChannel) Start(ctx context.Context) error {
-	logger.InfoC("wecom", "Starting WeCom Bot channel...")
-
-	// Cancel the context created in the constructor to avoid a resource leak.
-	if c.cancel != nil {
-		c.cancel()
-	}
-	c.ctx, c.cancel = context.WithCancel(ctx)
-
-	c.SetRunning(true)
-	logger.InfoC("wecom", "WeCom Bot channel started")
-
-	return nil
-}
-
-// Stop gracefully stops the WeCom Bot channel
-func (c *WeComBotChannel) Stop(ctx context.Context) error {
-	logger.InfoC("wecom", "Stopping WeCom Bot channel...")
-
-	if c.cancel != nil {
-		c.cancel()
-	}
-
-	c.SetRunning(false)
-	logger.InfoC("wecom", "WeCom Bot channel stopped")
-	return nil
-}
-
-// Send sends a message to WeCom user via webhook API
-// Note: WeCom Bot can only reply within the configured timeout (default 5 seconds) of receiving a message
-// For delayed responses, we use the webhook URL
-func (c *WeComBotChannel) Send(ctx context.Context, msg bus.OutboundMessage) error {
-	if !c.IsRunning() {
-		return channels.ErrNotRunning
-	}
-
-	logger.DebugCF("wecom", "Sending message via webhook", map[string]any{
-		"chat_id": msg.ChatID,
-		"preview": utils.Truncate(msg.Content, 100),
-	})
-
-	return c.sendWebhookReply(ctx, msg.ChatID, msg.Content)
-}
-
-// WebhookPath returns the path for registering on the shared HTTP server.
-func (c *WeComBotChannel) WebhookPath() string {
-	if c.config.WebhookPath != "" {
-		return c.config.WebhookPath
-	}
-	return "/webhook/wecom"
-}
-
-// ServeHTTP implements http.Handler for the shared HTTP server.
-func (c *WeComBotChannel) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	c.handleWebhook(w, r)
-}
-
-// HealthPath returns the health check endpoint path.
-func (c *WeComBotChannel) HealthPath() string {
-	return "/health/wecom"
-}
-
-// HealthHandler handles health check requests.
-func (c *WeComBotChannel) HealthHandler(w http.ResponseWriter, r *http.Request) {
-	c.handleHealth(w, r)
-}
-
-// handleWebhook handles incoming webhook requests from WeCom
-func (c *WeComBotChannel) handleWebhook(w http.ResponseWriter, r *http.Request) {
-	ctx := r.Context()
-
-	if r.Method == http.MethodGet {
-		// Handle verification request
-		c.handleVerification(ctx, w, r)
-		return
-	}
-
-	if r.Method == http.MethodPost {
-		// Handle message callback
-		c.handleMessageCallback(ctx, w, r)
-		return
-	}
-
-	http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
-}
-
-// handleVerification handles the URL verification request from WeCom
-func (c *WeComBotChannel) handleVerification(ctx context.Context, w http.ResponseWriter, r *http.Request) {
-	query := r.URL.Query()
-	msgSignature := query.Get("msg_signature")
-	timestamp := query.Get("timestamp")
-	nonce := query.Get("nonce")
-	echostr := query.Get("echostr")
-
-	if msgSignature == "" || timestamp == "" || nonce == "" || echostr == "" {
-		http.Error(w, "Missing parameters", http.StatusBadRequest)
-		return
-	}
-
-	// Verify signature
-	if !verifySignature(c.config.Token(), msgSignature, timestamp, nonce, echostr) {
-		logger.WarnC("wecom", "Signature verification failed")
-		http.Error(w, "Invalid signature", http.StatusForbidden)
-		return
-	}
-
-	// Decrypt echostr
-	// For AIBOT (智能机器人), receiveid should be empty string ""
-	// Reference: https://developer.work.weixin.qq.com/document/path/101033
-	decryptedEchoStr, err := decryptMessageWithVerify(echostr, c.config.EncodingAESKey(), "")
-	if err != nil {
-		logger.ErrorCF("wecom", "Failed to decrypt echostr", map[string]any{
-			"error": err.Error(),
-		})
-		http.Error(w, "Decryption failed", http.StatusInternalServerError)
-		return
-	}
-
-	// Remove BOM and whitespace as per WeCom documentation
-	// The response must be plain text without quotes, BOM, or newlines
-	decryptedEchoStr = strings.TrimSpace(decryptedEchoStr)
-	decryptedEchoStr = strings.TrimPrefix(decryptedEchoStr, "\xef\xbb\xbf") // Remove UTF-8 BOM
-	w.Write([]byte(decryptedEchoStr))
-}
-
-// handleMessageCallback handles incoming messages from WeCom
-func (c *WeComBotChannel) handleMessageCallback(ctx context.Context, w http.ResponseWriter, r *http.Request) {
-	query := r.URL.Query()
-	msgSignature := query.Get("msg_signature")
-	timestamp := query.Get("timestamp")
-	nonce := query.Get("nonce")
-
-	if msgSignature == "" || timestamp == "" || nonce == "" {
-		http.Error(w, "Missing parameters", http.StatusBadRequest)
-		return
-	}
-
-	// Read request body
-	body, err := io.ReadAll(r.Body)
-	if err != nil {
-		http.Error(w, "Failed to read body", http.StatusBadRequest)
-		return
-	}
-	defer r.Body.Close()
-
-	// Parse XML to get encrypted message
-	var encryptedMsg struct {
-		XMLName    xml.Name `xml:"xml"`
-		ToUserName string   `xml:"ToUserName"`
-		Encrypt    string   `xml:"Encrypt"`
-		AgentID    string   `xml:"AgentID"`
-	}
-
-	if err = xml.Unmarshal(body, &encryptedMsg); err != nil {
-		logger.ErrorCF("wecom", "Failed to parse XML", map[string]any{
-			"error": err.Error(),
-		})
-		http.Error(w, "Invalid XML", http.StatusBadRequest)
-		return
-	}
-
-	// Verify signature
-	if !verifySignature(c.config.Token(), msgSignature, timestamp, nonce, encryptedMsg.Encrypt) {
-		logger.WarnC("wecom", "Message signature verification failed")
-		http.Error(w, "Invalid signature", http.StatusForbidden)
-		return
-	}
-
-	// Decrypt message
-	// For AIBOT (智能机器人), receiveid should be empty string ""
-	// Reference: https://developer.work.weixin.qq.com/document/path/101033
-	decryptedMsg, err := decryptMessageWithVerify(encryptedMsg.Encrypt, c.config.EncodingAESKey(), "")
-	if err != nil {
-		logger.ErrorCF("wecom", "Failed to decrypt message", map[string]any{
-			"error": err.Error(),
-		})
-		http.Error(w, "Decryption failed", http.StatusInternalServerError)
-		return
-	}
-
-	// Parse decrypted JSON message (AIBOT uses JSON format)
-	var msg WeComBotMessage
-	if err := json.Unmarshal([]byte(decryptedMsg), &msg); err != nil {
-		logger.ErrorCF("wecom", "Failed to parse decrypted message", map[string]any{
-			"error": err.Error(),
-		})
-		http.Error(w, "Invalid message format", http.StatusBadRequest)
-		return
-	}
-
-	// Process the message with the channel's long-lived context (not the HTTP
-	// request context, which is canceled as soon as we return the response).
-	go c.processMessage(c.ctx, msg)
-
-	// Return success response immediately
-	// WeCom Bot requires response within configured timeout (default 5 seconds)
-	w.Write([]byte("success"))
-}
-
-// processMessage processes the received message
-func (c *WeComBotChannel) processMessage(ctx context.Context, msg WeComBotMessage) {
-	// Skip unsupported message types
-	if msg.MsgType != "text" && msg.MsgType != "image" && msg.MsgType != "voice" && msg.MsgType != "file" &&
-		msg.MsgType != "mixed" {
-		logger.DebugCF("wecom", "Skipping non-supported message type", map[string]any{
-			"msg_type": msg.MsgType,
-		})
-		return
-	}
-
-	// Message deduplication: Use msg_id to prevent duplicate processing
-	msgID := msg.MsgID
-	if !c.processedMsgs.MarkMessageProcessed(msgID) {
-		logger.DebugCF("wecom", "Skipping duplicate message", map[string]any{
-			"msg_id": msgID,
-		})
-		return
-	}
-
-	senderID := msg.From.UserID
-
-	// Determine if this is a group chat or direct message
-	// ChatType: "single" for DM, "group" for group chat
-	isGroupChat := msg.ChatType == "group"
-
-	var chatID, peerKind, peerID string
-	if isGroupChat {
-		// Group chat: use ChatID as chatID and peer_id
-		chatID = msg.ChatID
-		peerKind = "group"
-		peerID = msg.ChatID
-	} else {
-		// Direct message: use senderID as chatID and peer_id
-		chatID = senderID
-		peerKind = "direct"
-		peerID = senderID
-	}
-
-	// Extract content based on message type
-	var content string
-	switch msg.MsgType {
-	case "text":
-		content = msg.Text.Content
-	case "voice":
-		content = msg.Voice.Content // Voice to text content
-	case "mixed":
-		// For mixed messages, concatenate text items
-		for _, item := range msg.Mixed.MsgItem {
-			if item.MsgType == "text" {
-				content += item.Text.Content
-			}
-		}
-	case "image", "file":
-		// For image and file, we don't have text content
-		content = ""
-	}
-
-	// Build metadata
-	peer := bus.Peer{Kind: peerKind, ID: peerID}
-
-	// In group chats, apply unified group trigger filtering
-	if isGroupChat {
-		respond, cleaned := c.ShouldRespondInGroup(false, content)
-		if !respond {
-			return
-		}
-		content = cleaned
-	}
-
-	metadata := map[string]string{
-		"msg_type":     msg.MsgType,
-		"msg_id":       msg.MsgID,
-		"platform":     "wecom",
-		"response_url": msg.ResponseURL,
-	}
-	if isGroupChat {
-		metadata["chat_id"] = msg.ChatID
-		metadata["sender_id"] = senderID
-	}
-
-	logger.DebugCF("wecom", "Received message", map[string]any{
-		"sender_id":     senderID,
-		"msg_type":      msg.MsgType,
-		"peer_kind":     peerKind,
-		"is_group_chat": isGroupChat,
-		"preview":       utils.Truncate(content, 50),
-	})
-
-	// Build sender info
-	sender := bus.SenderInfo{
-		Platform:    "wecom",
-		PlatformID:  senderID,
-		CanonicalID: identity.BuildCanonicalID("wecom", senderID),
-	}
-
-	if !c.IsAllowedSender(sender) {
-		return
-	}
-
-	// Handle the message through the base channel
-	c.HandleMessage(ctx, peer, msg.MsgID, senderID, chatID, content, nil, metadata, sender)
-}
-
-// sendWebhookReply sends a reply using the webhook URL
-func (c *WeComBotChannel) sendWebhookReply(ctx context.Context, userID, content string) error {
-	reply := WeComBotReplyMessage{
-		MsgType: "text",
-	}
-	reply.Text.Content = content
-
-	jsonData, err := json.Marshal(reply)
-	if err != nil {
-		return fmt.Errorf("failed to marshal reply: %w", err)
-	}
-
-	// Use configurable timeout (default 5 seconds)
-	timeout := c.config.ReplyTimeout
-	if timeout <= 0 {
-		timeout = 5
-	}
-
-	reqCtx, cancel := context.WithTimeout(ctx, time.Duration(timeout)*time.Second)
-	defer cancel()
-
-	req, err := http.NewRequestWithContext(reqCtx, http.MethodPost, c.config.WebhookURL, bytes.NewBuffer(jsonData))
-	if err != nil {
-		return fmt.Errorf("failed to create request: %w", err)
-	}
-	req.Header.Set("Content-Type", "application/json")
-
-	resp, err := c.client.Do(req)
-	if err != nil {
-		return channels.ClassifyNetError(err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != http.StatusOK {
-		body, readErr := io.ReadAll(resp.Body)
-		if readErr != nil {
-			return channels.ClassifySendError(
-				resp.StatusCode,
-				fmt.Errorf("reading webhook error response: %w", readErr),
-			)
-		}
-		return channels.ClassifySendError(
-			resp.StatusCode,
-			fmt.Errorf("webhook API error: %s", string(body)),
-		)
-	}
-
-	body, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return fmt.Errorf("failed to read response: %w", err)
-	}
-
-	// Check response
-	var result struct {
-		ErrCode int    `json:"errcode"`
-		ErrMsg  string `json:"errmsg"`
-	}
-	if err := json.Unmarshal(body, &result); err != nil {
-		return fmt.Errorf("failed to parse response: %w", err)
-	}
-
-	if result.ErrCode != 0 {
-		return fmt.Errorf("webhook API error: %s (code: %d)", result.ErrMsg, result.ErrCode)
-	}
-
-	return nil
-}
-
-// handleHealth handles health check requests
-func (c *WeComBotChannel) handleHealth(w http.ResponseWriter, r *http.Request) {
-	status := map[string]any{
-		"status":  "ok",
-		"running": c.IsRunning(),
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(status)
-}
--- a/pkg/channels/wecom/bot_test.go
+++ b/pkg/channels/wecom/bot_test.go
@ -1,734 +0,0 @@
-package wecom
-
-import (
-	"bytes"
-	"context"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/sha1"
-	"encoding/base64"
-	"encoding/binary"
-	"encoding/json"
-	"encoding/xml"
-	"fmt"
-	"net/http"
-	"net/http/httptest"
-	"sort"
-	"strings"
-	"testing"
-
-	"github.com/sipeed/picoclaw/pkg/bus"
-	"github.com/sipeed/picoclaw/pkg/config"
-)
-
-// generateTestAESKey generates a valid test AES key
-func generateTestAESKey() string {
-	// AES key needs to be 32 bytes (256 bits) for AES-256
-	key := make([]byte, 32)
-	for i := range key {
-		key[i] = byte(i)
-	}
-	// Return base64 encoded key without padding
-	return base64.StdEncoding.EncodeToString(key)[:43]
-}
-
-// encryptTestMessage encrypts a message for testing (AIBOT JSON format)
-func encryptTestMessage(message, aesKey string) (string, error) {
-	// Decode AES key
-	key, err := base64.StdEncoding.DecodeString(aesKey + "=")
-	if err != nil {
-		return "", err
-	}
-
-	// Prepare message: random(16) + msg_len(4) + msg + receiveid
-	random := make([]byte, 0, 16)
-	for i := range 16 {
-		random = append(random, byte(i))
-	}
-
-	msgBytes := []byte(message)
-	receiveID := []byte("test_aibot_id")
-
-	msgLen := uint32(len(msgBytes))
-	lenBytes := make([]byte, 4)
-	binary.BigEndian.PutUint32(lenBytes, msgLen)
-
-	plainText := append(random, lenBytes...)
-	plainText = append(plainText, msgBytes...)
-	plainText = append(plainText, receiveID...)
-
-	// PKCS7 padding
-	blockSize := aes.BlockSize
-	padding := blockSize - len(plainText)%blockSize
-	padText := bytes.Repeat([]byte{byte(padding)}, padding)
-	plainText = append(plainText, padText...)
-
-	// Encrypt
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		return "", err
-	}
-
-	mode := cipher.NewCBCEncrypter(block, key[:aes.BlockSize])
-	cipherText := make([]byte, len(plainText))
-	mode.CryptBlocks(cipherText, plainText)
-
-	return base64.StdEncoding.EncodeToString(cipherText), nil
-}
-
-// generateSignature generates a signature for testing
-func generateSignature(token, timestamp, nonce, msgEncrypt string) string {
-	params := []string{token, timestamp, nonce, msgEncrypt}
-	sort.Strings(params)
-	str := strings.Join(params, "")
-	hash := sha1.Sum([]byte(str))
-	return fmt.Sprintf("%x", hash)
-}
-
-func TestNewWeComBotChannel(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-
-	t.Run("missing token", func(t *testing.T) {
-		cfg := config.WeComConfig{}
-		cfg.SetToken("")
-		cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		_, err := NewWeComBotChannel(cfg, msgBus)
-		if err == nil {
-			t.Error("expected error for missing token, got nil")
-		}
-	})
-
-	t.Run("missing webhook_url", func(t *testing.T) {
-		cfg := config.WeComConfig{}
-		cfg.SetToken("test_token")
-		cfg.WebhookURL = ""
-		_, err := NewWeComBotChannel(cfg, msgBus)
-		if err == nil {
-			t.Error("expected error for missing webhook_url, got nil")
-		}
-	})
-
-	t.Run("valid config", func(t *testing.T) {
-		cfg := config.WeComConfig{}
-		cfg.SetToken("test_token")
-		cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		cfg.AllowFrom = []string{"user1", "user2"}
-		ch, err := NewWeComBotChannel(cfg, msgBus)
-		if err != nil {
-			t.Fatalf("unexpected error: %v", err)
-		}
-		if ch.Name() != "wecom" {
-			t.Errorf("Name() = %q, want %q", ch.Name(), "wecom")
-		}
-		if ch.IsRunning() {
-			t.Error("new channel should not be running")
-		}
-	})
-}
-
-func TestWeComBotChannelIsAllowed(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-
-	t.Run("empty allowlist allows all", func(t *testing.T) {
-		cfg := config.WeComConfig{}
-		cfg.SetToken("test_token")
-		cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		cfg.AllowFrom = []string{}
-		ch, _ := NewWeComBotChannel(cfg, msgBus)
-		if !ch.IsAllowed("any_user") {
-			t.Error("empty allowlist should allow all users")
-		}
-	})
-
-	t.Run("allowlist restricts users", func(t *testing.T) {
-		cfg := config.WeComConfig{}
-		cfg.SetToken("test_token")
-		cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		cfg.AllowFrom = []string{"allowed_user"}
-		ch, _ := NewWeComBotChannel(cfg, msgBus)
-		if !ch.IsAllowed("allowed_user") {
-			t.Error("allowed user should pass allowlist check")
-		}
-		if ch.IsAllowed("blocked_user") {
-			t.Error("non-allowed user should be blocked")
-		}
-	})
-}
-
-func TestWeComBotVerifySignature(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-	cfg := config.WeComConfig{}
-	cfg.SetToken("test_token")
-	cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-	ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-	t.Run("valid signature", func(t *testing.T) {
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-		msgEncrypt := "test_message"
-		expectedSig := generateSignature("test_token", timestamp, nonce, msgEncrypt)
-
-		if !verifySignature(ch.config.Token(), expectedSig, timestamp, nonce, msgEncrypt) {
-			t.Error("valid signature should pass verification")
-		}
-	})
-
-	t.Run("invalid signature", func(t *testing.T) {
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-		msgEncrypt := "test_message"
-
-		if verifySignature(ch.config.Token(), "invalid_sig", timestamp, nonce, msgEncrypt) {
-			t.Error("invalid signature should fail verification")
-		}
-	})
-
-	t.Run("empty token rejects verification (fail-closed)", func(t *testing.T) {
-		cfgEmpty := config.WeComConfig{}
-		cfgEmpty.SetToken("")
-		cfgEmpty.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		chEmpty := &WeComBotChannel{
-			config: cfgEmpty,
-		}
-
-		if verifySignature(chEmpty.config.Token(), "any_sig", "any_ts", "any_nonce", "any_msg") {
-			t.Error("empty token should reject verification (fail-closed)")
-		}
-	})
-}
-
-func TestWeComBotDecryptMessage(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-
-	t.Run("decrypt without AES key", func(t *testing.T) {
-		cfg := config.WeComConfig{}
-		cfg.SetToken("test_token")
-		cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		cfg.SetEncodingAESKey("")
-		ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-		// Without AES key, message should be base64 decoded only
-		plainText := "hello world"
-		encoded := base64.StdEncoding.EncodeToString([]byte(plainText))
-
-		result, err := decryptMessage(encoded, ch.config.EncodingAESKey())
-		if err != nil {
-			t.Fatalf("unexpected error: %v", err)
-		}
-		if result != plainText {
-			t.Errorf("decryptMessage() = %q, want %q", result, plainText)
-		}
-	})
-
-	t.Run("decrypt with AES key", func(t *testing.T) {
-		aesKey := generateTestAESKey()
-		cfg := config.WeComConfig{}
-		cfg.SetToken("test_token")
-		cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		cfg.SetEncodingAESKey(aesKey)
-		ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-		originalMsg := "<xml><Content>Hello</Content></xml>"
-		encrypted, err := encryptTestMessage(originalMsg, aesKey)
-		if err != nil {
-			t.Fatalf("failed to encrypt test message: %v", err)
-		}
-
-		result, err := decryptMessage(encrypted, ch.config.EncodingAESKey())
-		if err != nil {
-			t.Fatalf("unexpected error: %v", err)
-		}
-		if result != originalMsg {
-			t.Errorf("WeComDecryptMessage() = %q, want %q", result, originalMsg)
-		}
-	})
-
-	t.Run("invalid base64", func(t *testing.T) {
-		cfg := config.WeComConfig{}
-		cfg.SetToken("test_token")
-		cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		cfg.SetEncodingAESKey("")
-		ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-		_, err := decryptMessage("invalid_base64!!!", ch.config.EncodingAESKey())
-		if err == nil {
-			t.Error("expected error for invalid base64, got nil")
-		}
-	})
-
-	t.Run("invalid AES key", func(t *testing.T) {
-		cfg := config.WeComConfig{}
-		cfg.SetToken("test_token")
-		cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-		cfg.SetEncodingAESKey("invalid_key")
-		ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-		_, err := decryptMessage(base64.StdEncoding.EncodeToString([]byte("test")), ch.config.EncodingAESKey())
-		if err == nil {
-			t.Error("expected error for invalid AES key, got nil")
-		}
-	})
-}
-
-func TestWeComBotPKCS7Unpad(t *testing.T) {
-	tests := []struct {
-		name     string
-		input    []byte
-		expected []byte
-	}{
-		{
-			name:     "empty input",
-			input:    []byte{},
-			expected: []byte{},
-		},
-		{
-			name:     "valid padding 3 bytes",
-			input:    append([]byte("hello"), bytes.Repeat([]byte{3}, 3)...),
-			expected: []byte("hello"),
-		},
-		{
-			name:     "valid padding 16 bytes (full block)",
-			input:    append([]byte("123456789012345"), bytes.Repeat([]byte{16}, 16)...),
-			expected: []byte("123456789012345"),
-		},
-		{
-			name:     "invalid padding larger than data",
-			input:    []byte{20},
-			expected: nil, // should return error
-		},
-		{
-			name:     "invalid padding zero",
-			input:    append([]byte("test"), byte(0)),
-			expected: nil, // should return error
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			result, err := pkcs7Unpad(tt.input)
-			if tt.expected == nil {
-				// This case should return an error
-				if err == nil {
-					t.Errorf("pkcs7Unpad() expected error for invalid padding, got result: %v", result)
-				}
-				return
-			}
-			if err != nil {
-				t.Errorf("pkcs7Unpad() unexpected error: %v", err)
-				return
-			}
-			if !bytes.Equal(result, tt.expected) {
-				t.Errorf("pkcs7Unpad() = %v, want %v", result, tt.expected)
-			}
-		})
-	}
-}
-
-func TestWeComBotHandleVerification(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-	aesKey := generateTestAESKey()
-	cfg := config.WeComConfig{}
-	cfg.SetToken("test_token")
-	cfg.SetEncodingAESKey(aesKey)
-	cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-	ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-	t.Run("valid verification request", func(t *testing.T) {
-		echostr := "test_echostr_123"
-		encryptedEchostr, _ := encryptTestMessage(echostr, aesKey)
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-		signature := generateSignature("test_token", timestamp, nonce, encryptedEchostr)
-
-		req := httptest.NewRequest(
-			http.MethodGet,
-			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce+"&echostr="+encryptedEchostr,
-			nil,
-		)
-		w := httptest.NewRecorder()
-
-		ch.handleVerification(context.Background(), w, req)
-
-		if w.Code != http.StatusOK {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
-		}
-		if w.Body.String() != echostr {
-			t.Errorf("response body = %q, want %q", w.Body.String(), echostr)
-		}
-	})
-
-	t.Run("missing parameters", func(t *testing.T) {
-		req := httptest.NewRequest(http.MethodGet, "/webhook/wecom?msg_signature=sig&timestamp=ts", nil)
-		w := httptest.NewRecorder()
-
-		ch.handleVerification(context.Background(), w, req)
-
-		if w.Code != http.StatusBadRequest {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusBadRequest)
-		}
-	})
-
-	t.Run("invalid signature", func(t *testing.T) {
-		echostr := "test_echostr"
-		encryptedEchostr, _ := encryptTestMessage(echostr, aesKey)
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-
-		req := httptest.NewRequest(
-			http.MethodGet,
-			"/webhook/wecom?msg_signature=invalid_sig&timestamp="+timestamp+"&nonce="+nonce+"&echostr="+encryptedEchostr,
-			nil,
-		)
-		w := httptest.NewRecorder()
-
-		ch.handleVerification(context.Background(), w, req)
-
-		if w.Code != http.StatusForbidden {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusForbidden)
-		}
-	})
-}
-
-func TestWeComBotHandleMessageCallback(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-	aesKey := generateTestAESKey()
-	cfg := config.WeComConfig{}
-	cfg.SetToken("test_token")
-	cfg.SetEncodingAESKey(aesKey)
-	cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-	ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-	runBotMessageCallback := func(t *testing.T, jsonMsg string) *httptest.ResponseRecorder {
-		t.Helper()
-		encrypted, _ := encryptTestMessage(jsonMsg, aesKey)
-		encryptedWrapper := struct {
-			XMLName xml.Name `xml:"xml"`
-			Encrypt string   `xml:"Encrypt"`
-		}{
-			Encrypt: encrypted,
-		}
-		wrapperData, _ := xml.Marshal(encryptedWrapper)
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-		signature := generateSignature("test_token", timestamp, nonce, encrypted)
-		req := httptest.NewRequest(
-			http.MethodPost,
-			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce,
-			bytes.NewReader(wrapperData),
-		)
-		w := httptest.NewRecorder()
-		ch.handleMessageCallback(context.Background(), w, req)
-		return w
-	}
-
-	t.Run("valid direct message callback", func(t *testing.T) {
-		w := runBotMessageCallback(t, `{
-			"msgid": "test_msg_id_123",
-			"aibotid": "test_aibot_id",
-			"chattype": "single",
-			"from": {"userid": "user123"},
-			"response_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
-			"msgtype": "text",
-			"text": {"content": "Hello World"}
-		}`)
-		if w.Code != http.StatusOK {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
-		}
-		if w.Body.String() != "success" {
-			t.Errorf("response body = %q, want %q", w.Body.String(), "success")
-		}
-	})
-
-	t.Run("valid group message callback", func(t *testing.T) {
-		w := runBotMessageCallback(t, `{
-			"msgid": "test_msg_id_456",
-			"aibotid": "test_aibot_id",
-			"chatid": "group_chat_id_123",
-			"chattype": "group",
-			"from": {"userid": "user456"},
-			"response_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
-			"msgtype": "text",
-			"text": {"content": "Hello Group"}
-		}`)
-		if w.Code != http.StatusOK {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
-		}
-		if w.Body.String() != "success" {
-			t.Errorf("response body = %q, want %q", w.Body.String(), "success")
-		}
-	})
-
-	t.Run("missing parameters", func(t *testing.T) {
-		req := httptest.NewRequest(http.MethodPost, "/webhook/wecom?msg_signature=sig", nil)
-		w := httptest.NewRecorder()
-
-		ch.handleMessageCallback(context.Background(), w, req)
-
-		if w.Code != http.StatusBadRequest {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusBadRequest)
-		}
-	})
-
-	t.Run("invalid XML", func(t *testing.T) {
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-		signature := generateSignature("test_token", timestamp, nonce, "")
-
-		req := httptest.NewRequest(
-			http.MethodPost,
-			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce,
-			strings.NewReader("invalid xml"),
-		)
-		w := httptest.NewRecorder()
-
-		ch.handleMessageCallback(context.Background(), w, req)
-
-		if w.Code != http.StatusBadRequest {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusBadRequest)
-		}
-	})
-
-	t.Run("invalid signature", func(t *testing.T) {
-		encryptedWrapper := struct {
-			XMLName xml.Name `xml:"xml"`
-			Encrypt string   `xml:"Encrypt"`
-		}{
-			Encrypt: "encrypted_data",
-		}
-		wrapperData, _ := xml.Marshal(encryptedWrapper)
-
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-
-		req := httptest.NewRequest(
-			http.MethodPost,
-			"/webhook/wecom?msg_signature=invalid_sig&timestamp="+timestamp+"&nonce="+nonce,
-			bytes.NewReader(wrapperData),
-		)
-		w := httptest.NewRecorder()
-
-		ch.handleMessageCallback(context.Background(), w, req)
-
-		if w.Code != http.StatusForbidden {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusForbidden)
-		}
-	})
-}
-
-func TestWeComBotProcessMessage(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-	cfg := config.WeComConfig{}
-	cfg.SetToken("test_token")
-	cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-	ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-	t.Run("process direct text message", func(t *testing.T) {
-		msg := WeComBotMessage{
-			MsgID:       "test_msg_id_123",
-			AIBotID:     "test_aibot_id",
-			ChatType:    "single",
-			ResponseURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
-			MsgType:     "text",
-		}
-		msg.From.UserID = "user123"
-		msg.Text.Content = "Hello World"
-
-		// Should not panic
-		ch.processMessage(context.Background(), msg)
-	})
-
-	t.Run("process group text message", func(t *testing.T) {
-		msg := WeComBotMessage{
-			MsgID:       "test_msg_id_456",
-			AIBotID:     "test_aibot_id",
-			ChatID:      "group_chat_id_123",
-			ChatType:    "group",
-			ResponseURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
-			MsgType:     "text",
-		}
-		msg.From.UserID = "user456"
-		msg.Text.Content = "Hello Group"
-
-		// Should not panic
-		ch.processMessage(context.Background(), msg)
-	})
-
-	t.Run("process voice message", func(t *testing.T) {
-		msg := WeComBotMessage{
-			MsgID:       "test_msg_id_789",
-			AIBotID:     "test_aibot_id",
-			ChatType:    "single",
-			ResponseURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
-			MsgType:     "voice",
-		}
-		msg.From.UserID = "user123"
-		msg.Voice.Content = "Voice message text"
-
-		// Should not panic
-		ch.processMessage(context.Background(), msg)
-	})
-
-	t.Run("skip unsupported message type", func(t *testing.T) {
-		msg := WeComBotMessage{
-			MsgID:       "test_msg_id_000",
-			AIBotID:     "test_aibot_id",
-			ChatType:    "single",
-			ResponseURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
-			MsgType:     "video",
-		}
-		msg.From.UserID = "user123"
-
-		// Should not panic
-		ch.processMessage(context.Background(), msg)
-	})
-}
-
-func TestWeComBotHandleWebhook(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-	cfg := config.WeComConfig{}
-	cfg.SetToken("test_token")
-	cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-	ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-	t.Run("GET request calls verification", func(t *testing.T) {
-		echostr := "test_echostr"
-		encoded := base64.StdEncoding.EncodeToString([]byte(echostr))
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-		signature := generateSignature("test_token", timestamp, nonce, encoded)
-
-		req := httptest.NewRequest(
-			http.MethodGet,
-			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce+"&echostr="+encoded,
-			nil,
-		)
-		w := httptest.NewRecorder()
-
-		ch.handleWebhook(w, req)
-
-		if w.Code != http.StatusOK {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
-		}
-	})
-
-	t.Run("POST request calls message callback", func(t *testing.T) {
-		encryptedWrapper := struct {
-			XMLName xml.Name `xml:"xml"`
-			Encrypt string   `xml:"Encrypt"`
-		}{
-			Encrypt: base64.StdEncoding.EncodeToString([]byte("test")),
-		}
-		wrapperData, _ := xml.Marshal(encryptedWrapper)
-
-		timestamp := "1234567890"
-		nonce := "test_nonce"
-		signature := generateSignature("test_token", timestamp, nonce, encryptedWrapper.Encrypt)
-
-		req := httptest.NewRequest(
-			http.MethodPost,
-			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce,
-			bytes.NewReader(wrapperData),
-		)
-		w := httptest.NewRecorder()
-
-		ch.handleWebhook(w, req)
-
-		// Should not be method not allowed
-		if w.Code == http.StatusMethodNotAllowed {
-			t.Error("POST request should not return Method Not Allowed")
-		}
-	})
-
-	t.Run("unsupported method", func(t *testing.T) {
-		req := httptest.NewRequest(http.MethodPut, "/webhook/wecom", nil)
-		w := httptest.NewRecorder()
-
-		ch.handleWebhook(w, req)
-
-		if w.Code != http.StatusMethodNotAllowed {
-			t.Errorf("status code = %d, want %d", w.Code, http.StatusMethodNotAllowed)
-		}
-	})
-}
-
-func TestWeComBotHandleHealth(t *testing.T) {
-	msgBus := bus.NewMessageBus()
-	cfg := config.WeComConfig{}
-	cfg.SetToken("test_token")
-	cfg.WebhookURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test"
-	ch, _ := NewWeComBotChannel(cfg, msgBus)
-
-	req := httptest.NewRequest(http.MethodGet, "/health/wecom", nil)
-	w := httptest.NewRecorder()
-
-	ch.handleHealth(w, req)
-
-	if w.Code != http.StatusOK {
-		t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
-	}
-
-	contentType := w.Header().Get("Content-Type")
-	if contentType != "application/json" {
-		t.Errorf("Content-Type = %q, want %q", contentType, "application/json")
-	}
-
-	body := w.Body.String()
-	if !strings.Contains(body, "status") || !strings.Contains(body, "running") {
-		t.Errorf("response body should contain status and running fields, got: %s", body)
-	}
-}
-
-func TestWeComBotReplyMessage(t *testing.T) {
-	msg := WeComBotReplyMessage{
-		MsgType: "text",
-	}
-	msg.Text.Content = "Hello World"
-
-	if msg.MsgType != "text" {
-		t.Errorf("MsgType = %q, want %q", msg.MsgType, "text")
-	}
-	if msg.Text.Content != "Hello World" {
-		t.Errorf("Text.Content = %q, want %q", msg.Text.Content, "Hello World")
-	}
-}
-
-func TestWeComBotMessageStructure(t *testing.T) {
-	jsonData := `{
-		"msgid": "test_msg_id_123",
-		"aibotid": "test_aibot_id",
-		"chatid": "group_chat_id_123",
-		"chattype": "group",
-		"from": {"userid": "user123"},
-		"response_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
-		"msgtype": "text",
-		"text": {"content": "Hello World"}
-	}`
-
-	var msg WeComBotMessage
-	err := json.Unmarshal([]byte(jsonData), &msg)
-	if err != nil {
-		t.Fatalf("failed to unmarshal JSON: %v", err)
-	}
-
-	if msg.MsgID != "test_msg_id_123" {
-		t.Errorf("MsgID = %q, want %q", msg.MsgID, "test_msg_id_123")
-	}
-	if msg.AIBotID != "test_aibot_id" {
-		t.Errorf("AIBotID = %q, want %q", msg.AIBotID, "test_aibot_id")
-	}
-	if msg.ChatID != "group_chat_id_123" {
-		t.Errorf("ChatID = %q, want %q", msg.ChatID, "group_chat_id_123")
-	}
-	if msg.ChatType != "group" {
-		t.Errorf("ChatType = %q, want %q", msg.ChatType, "group")
-	}
-	if msg.From.UserID != "user123" {
-		t.Errorf("From.UserID = %q, want %q", msg.From.UserID, "user123")
-	}
-	if msg.MsgType != "text" {
-		t.Errorf("MsgType = %q, want %q", msg.MsgType, "text")
-	}
-	if msg.Text.Content != "Hello World" {
-		t.Errorf("Text.Content = %q, want %q", msg.Text.Content, "Hello World")
-	}
-}
--- a/pkg/channels/wecom/common.go
+++ b/pkg/channels/wecom/common.go
@ -1,199 +0,0 @@
-package wecom
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/rand"
-	"crypto/sha1"
-	"encoding/base64"
-	"encoding/binary"
-	"fmt"
-	"math/big"
-	"sort"
-	"strings"
-)
-
-// blockSize is the PKCS7 block size used by WeCom (32)
-const blockSize = 32
-
-// computeSignature computes the WeCom message signature from the given parameters.
-// It sorts [token, timestamp, nonce, encrypt], concatenates them and returns the SHA1 hex digest.
-func computeSignature(token, timestamp, nonce, encrypt string) string {
-	params := []string{token, timestamp, nonce, encrypt}
-	sort.Strings(params)
-	str := strings.Join(params, "")
-	hash := sha1.Sum([]byte(str))
-	return fmt.Sprintf("%x", hash)
-}
-
-// verifySignature verifies the message signature for WeCom
-// This is a common function used by both WeCom Bot and WeCom App
-func verifySignature(token, msgSignature, timestamp, nonce, msgEncrypt string) bool {
-	if token == "" {
-		return false
-	}
-	return computeSignature(token, timestamp, nonce, msgEncrypt) == msgSignature
-}
-
-// decryptMessage decrypts the encrypted message using AES
-// For AIBOT, receiveid should be the aibotid; for other apps, it should be corp_id
-func decryptMessage(encryptedMsg, encodingAESKey string) (string, error) {
-	return decryptMessageWithVerify(encryptedMsg, encodingAESKey, "")
-}
-
-// decryptMessageWithVerify decrypts the encrypted message and optionally verifies receiveid
-// receiveid: for AIBOT use aibotid, for WeCom App use corp_id. If empty, skip verification.
-func decryptMessageWithVerify(encryptedMsg, encodingAESKey, receiveid string) (string, error) {
-	if encodingAESKey == "" {
-		// No encryption, return as is (base64 decode)
-		decoded, err := base64.StdEncoding.DecodeString(encryptedMsg)
-		if err != nil {
-			return "", err
-		}
-		return string(decoded), nil
-	}
-
-	aesKey, err := decodeWeComAESKey(encodingAESKey)
-	if err != nil {
-		return "", err
-	}
-
-	cipherText, err := base64.StdEncoding.DecodeString(encryptedMsg)
-	if err != nil {
-		return "", fmt.Errorf("failed to decode message: %w", err)
-	}
-
-	plainText, err := decryptAESCBC(aesKey, cipherText)
-	if err != nil {
-		return "", err
-	}
-
-	return unpackWeComFrame(plainText, receiveid)
-}
-
-// decodeWeComAESKey base64-decodes the 43-character EncodingAESKey (trailing "=" is
-// appended automatically) and validates that the result is exactly 32 bytes.
-// It is the single place that handles this repeated pattern in both encrypt and decrypt paths.
-func decodeWeComAESKey(encodingAESKey string) ([]byte, error) {
-	aesKey, err := base64.StdEncoding.DecodeString(encodingAESKey + "=")
-	if err != nil {
-		return nil, fmt.Errorf("failed to decode AES key: %w", err)
-	}
-	if len(aesKey) != 32 {
-		return nil, fmt.Errorf("invalid AES key length: %d", len(aesKey))
-	}
-	return aesKey, nil
-}
-
-// encryptAESCBC encrypts plaintext using AES-CBC with the given key, mirroring
-// decryptAESCBC. IV = aesKey[:aes.BlockSize]. The caller must PKCS7-pad the
-// plaintext to a multiple of aes.BlockSize before calling.
-func encryptAESCBC(aesKey, plaintext []byte) ([]byte, error) {
-	block, err := aes.NewCipher(aesKey)
-	if err != nil {
-		return nil, fmt.Errorf("failed to create cipher: %w", err)
-	}
-	iv := aesKey[:aes.BlockSize]
-	ciphertext := make([]byte, len(plaintext))
-	cipher.NewCBCEncrypter(block, iv).CryptBlocks(ciphertext, plaintext)
-	return ciphertext, nil
-}
-
-// packWeComFrame builds the WeCom wire format:
-//
-//	random(16 ASCII digits) + msg_len(4, big-endian) + msg + receiveid
-func packWeComFrame(msg, receiveid string) ([]byte, error) {
-	randomBytes := make([]byte, 16)
-	for i := range 16 {
-		n, err := rand.Int(rand.Reader, big.NewInt(10))
-		if err != nil {
-			return nil, fmt.Errorf("failed to generate random: %w", err)
-		}
-		randomBytes[i] = byte('0' + n.Int64())
-	}
-	msgBytes := []byte(msg)
-	msgLenBytes := make([]byte, 4)
-	binary.BigEndian.PutUint32(msgLenBytes, uint32(len(msgBytes)))
-	var buf bytes.Buffer
-	buf.Write(randomBytes)
-	buf.Write(msgLenBytes)
-	buf.Write(msgBytes)
-	buf.WriteString(receiveid)
-	return buf.Bytes(), nil
-}
-
-// unpackWeComFrame parses the WeCom wire format produced by packWeComFrame.
-// If receiveid is non-empty it verifies the frame's trailing receiveid field.
-func unpackWeComFrame(data []byte, receiveid string) (string, error) {
-	if len(data) < 20 {
-		return "", fmt.Errorf("decrypted frame too short: %d bytes", len(data))
-	}
-	msgLen := binary.BigEndian.Uint32(data[16:20])
-	if int(msgLen) > len(data)-20 {
-		return "", fmt.Errorf("invalid message length: %d", msgLen)
-	}
-	msg := data[20 : 20+msgLen]
-	if receiveid != "" && len(data) > 20+int(msgLen) {
-		actualReceiveID := string(data[20+msgLen:])
-		if actualReceiveID != receiveid {
-			return "", fmt.Errorf("receiveid mismatch: expected %s, got %s", receiveid, actualReceiveID)
-		}
-	}
-	return string(msg), nil
-}
-
-// decryptAESCBC decrypts ciphertext using AES-CBC with the given key.
-// IV = aesKey[:aes.BlockSize]. PKCS7 padding is stripped from the returned plaintext.
-func decryptAESCBC(aesKey, ciphertext []byte) ([]byte, error) {
-	if len(ciphertext) == 0 {
-		return nil, fmt.Errorf("ciphertext is empty")
-	}
-	if len(ciphertext)%aes.BlockSize != 0 {
-		return nil, fmt.Errorf("ciphertext length %d is not a multiple of block size", len(ciphertext))
-	}
-	block, err := aes.NewCipher(aesKey)
-	if err != nil {
-		return nil, fmt.Errorf("failed to create cipher: %w", err)
-	}
-	iv := aesKey[:aes.BlockSize]
-	plaintext := make([]byte, len(ciphertext))
-	cipher.NewCBCDecrypter(block, iv).CryptBlocks(plaintext, ciphertext)
-	plaintext, err = pkcs7Unpad(plaintext)
-	if err != nil {
-		return nil, fmt.Errorf("failed to unpad: %w", err)
-	}
-	return plaintext, nil
-}
-
-// pkcs7Pad adds PKCS7 padding
-func pkcs7Pad(data []byte, blockSize int) []byte {
-	padding := blockSize - (len(data) % blockSize)
-	if padding == 0 {
-		padding = blockSize
-	}
-	padText := bytes.Repeat([]byte{byte(padding)}, padding)
-	return append(data, padText...)
-}
-
-// pkcs7Unpad removes PKCS7 padding with validation
-func pkcs7Unpad(data []byte) ([]byte, error) {
-	if len(data) == 0 {
-		return data, nil
-	}
-	padding := int(data[len(data)-1])
-	// WeCom uses 32-byte block size for PKCS7 padding
-	if padding == 0 || padding > blockSize {
-		return nil, fmt.Errorf("invalid padding size: %d", padding)
-	}
-	if padding > len(data) {
-		return nil, fmt.Errorf("padding size larger than data")
-	}
-	// Verify all padding bytes
-	for i := range padding {
-		if data[len(data)-1-i] != byte(padding) {
-			return nil, fmt.Errorf("invalid padding byte at position %d", i)
-		}
-	}
-	return data[:len(data)-padding], nil
-}
--- a/pkg/channels/wecom/dedupe.go
+++ b/pkg/channels/wecom/dedupe.go
@ -1,54 +0,0 @@
-package wecom
-
-import "sync"
-
-const wecomMaxProcessedMessages = 1000
-
-// MessageDeduplicator provides thread-safe message deduplication using a circular queue (ring buffer)
-// combined with a hash map. This ensures fast O(1) lookups while naturally evicting the oldest
-// messages without causing "amnesia cliffs" when the limit is reached.
-type MessageDeduplicator struct {
-	mu   sync.Mutex
-	msgs map[string]bool
-	ring []string
-	idx  int
-	max  int
-}
-
-// NewMessageDeduplicator creates a new deduplicator with the specified capacity.
-func NewMessageDeduplicator(maxEntries int) *MessageDeduplicator {
-	if maxEntries <= 0 {
-		maxEntries = wecomMaxProcessedMessages
-	}
-	return &MessageDeduplicator{
-		msgs: make(map[string]bool, maxEntries),
-		ring: make([]string, maxEntries),
-		max:  maxEntries,
-	}
-}
-
-// MarkMessageProcessed marks msgID as processed and returns false for duplicates.
-func (d *MessageDeduplicator) MarkMessageProcessed(msgID string) bool {
-	d.mu.Lock()
-	defer d.mu.Unlock()
-
-	// 1. Check for duplicate
-	if d.msgs[msgID] {
-		return false
-	}
-
-	// 2. Evict the oldest message at our current ring position (if any)
-	oldestID := d.ring[d.idx]
-	if oldestID != "" {
-		delete(d.msgs, oldestID)
-	}
-
-	// 3. Store the new message
-	d.msgs[msgID] = true
-	d.ring[d.idx] = msgID
-
-	// 4. Advance the circle queue index
-	d.idx = (d.idx + 1) % d.max
-
-	return true
-}
--- a/pkg/channels/wecom/dedupe_test.go
+++ b/pkg/channels/wecom/dedupe_test.go
@ -1,83 +0,0 @@
-package wecom
-
-import (
-	"sync"
-	"testing"
-)
-
-func TestMessageDeduplicator_DuplicateDetection(t *testing.T) {
-	d := NewMessageDeduplicator(wecomMaxProcessedMessages)
-
-	if ok := d.MarkMessageProcessed("msg-1"); !ok {
-		t.Fatalf("first message should be accepted")
-	}
-
-	if ok := d.MarkMessageProcessed("msg-1"); ok {
-		t.Fatalf("duplicate message should be rejected")
-	}
-}
-
-func TestMessageDeduplicator_ConcurrentSameMessage(t *testing.T) {
-	d := NewMessageDeduplicator(wecomMaxProcessedMessages)
-
-	const goroutines = 64
-	var wg sync.WaitGroup
-	wg.Add(goroutines)
-
-	results := make(chan bool, goroutines)
-	for i := 0; i < goroutines; i++ {
-		go func() {
-			defer wg.Done()
-			results <- d.MarkMessageProcessed("msg-concurrent")
-		}()
-	}
-
-	wg.Wait()
-	close(results)
-
-	successes := 0
-	for ok := range results {
-		if ok {
-			successes++
-		}
-	}
-
-	if successes != 1 {
-		t.Fatalf("expected exactly 1 successful mark, got %d", successes)
-	}
-}
-
-func TestMessageDeduplicator_CircularQueueEviction(t *testing.T) {
-	// Create a deduplicator with a very small capacity to test eviction easily.
-	capacity := 3
-	d := NewMessageDeduplicator(capacity)
-
-	// Fill the queue.
-	d.MarkMessageProcessed("msg-1")
-	d.MarkMessageProcessed("msg-2")
-	d.MarkMessageProcessed("msg-3")
-
-	// At this point, the queue is full. msg-1 is the oldest.
-	if len(d.msgs) != 3 {
-		t.Fatalf("expected map size to be 3, got %d", len(d.msgs))
-	}
-
-	// This should evict msg-1 and add msg-4.
-	if ok := d.MarkMessageProcessed("msg-4"); !ok {
-		t.Fatalf("msg-4 should be accepted")
-	}
-
-	if len(d.msgs) != 3 {
-		t.Fatalf("expected map size to remain at max capacity (3), got %d", len(d.msgs))
-	}
-
-	// msg-1 should now be forgotten (evicted).
-	if ok := d.MarkMessageProcessed("msg-1"); !ok {
-		t.Fatalf("msg-1 should be accepted again because it was evicted")
-	}
-
-	// msg-2 should have been evicted when we added msg-1 back.
-	if ok := d.MarkMessageProcessed("msg-2"); !ok {
-		t.Fatalf("msg-2 should be accepted again because it was evicted")
-	}
-}
--- a/pkg/channels/wecom/init.go
+++ b/pkg/channels/wecom/init.go
@ -8,12 +8,6 @@ import (

 func init() {
 	channels.RegisterFactory("wecom", func(cfg *config.Config, b *bus.MessageBus) (channels.Channel, error) {
-		return NewWeComBotChannel(cfg.Channels.WeCom, b)
-	})
-	channels.RegisterFactory("wecom_app", func(cfg *config.Config, b *bus.MessageBus) (channels.Channel, error) {
-		return NewWeComAppChannel(cfg.Channels.WeComApp, b)
-	})
-	channels.RegisterFactory("wecom_aibot", func(cfg *config.Config, b *bus.MessageBus) (channels.Channel, error) {
-		return NewWeComAIBotChannel(cfg.Channels.WeComAIBot, b)
+		return NewChannel(cfg.Channels.WeCom, b)
 	})
 }
--- a/pkg/channels/wecom/media.go
+++ b/pkg/channels/wecom/media.go
@ -0,0 +1,802 @@
+package wecom
+
+import (
+	"context"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/md5"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io"
+	"mime"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/h2non/filetype"
+
+	"github.com/sipeed/picoclaw/pkg/bus"
+	"github.com/sipeed/picoclaw/pkg/media"
+)
+
+const (
+	wecomOutboundMediaMaxBytes = 20 << 20
+	wecomOutboundImageMaxBytes = 2 << 20
+	wecomOutboundVoiceMaxBytes = 2 << 20
+	wecomOutboundVideoMaxBytes = 10 << 20
+	wecomUploadChunkMaxBytes   = 512 << 10
+	wecomUploadMaxChunks       = 100
+	wecomUploadMinBytes        = 5
+)
+
+type wecomOutboundMedia struct {
+	MsgType     string
+	MediaID     string
+	Title       string
+	Description string
+}
+
+func (m *wecomOutboundMedia) respondBody() wecomRespondMsgBody {
+	body := wecomRespondMsgBody{MsgType: m.MsgType}
+	switch m.MsgType {
+	case "file":
+		body.File = &wecomMediaRefContent{MediaID: m.MediaID}
+	case "image":
+		body.Image = &wecomMediaRefContent{MediaID: m.MediaID}
+	case "voice":
+		body.Voice = &wecomMediaRefContent{MediaID: m.MediaID}
+	case "video":
+		body.Video = &wecomVideoContent{
+			MediaID:     m.MediaID,
+			Title:       m.Title,
+			Description: m.Description,
+		}
+	}
+	return body
+}
+
+func (m *wecomOutboundMedia) sendBody(chatID string, chatType uint32) wecomSendMsgBody {
+	body := wecomSendMsgBody{
+		ChatID:   chatID,
+		ChatType: chatType,
+		MsgType:  m.MsgType,
+	}
+	switch m.MsgType {
+	case "file":
+		body.File = &wecomMediaRefContent{MediaID: m.MediaID}
+	case "image":
+		body.Image = &wecomMediaRefContent{MediaID: m.MediaID}
+	case "voice":
+		body.Voice = &wecomMediaRefContent{MediaID: m.MediaID}
+	case "video":
+		body.Video = &wecomVideoContent{
+			MediaID:     m.MediaID,
+			Title:       m.Title,
+			Description: m.Description,
+		}
+	}
+	return body
+}
+
+func decodeMediaAESKey(value string) ([]byte, error) {
+	if value == "" {
+		return nil, nil
+	}
+	key, err := base64.StdEncoding.DecodeString(value)
+	if err == nil && len(key) == 32 {
+		return key, nil
+	}
+	key, err = base64.StdEncoding.DecodeString(value + "=")
+	if err != nil {
+		return nil, fmt.Errorf("decode AES key: %w", err)
+	}
+	if len(key) != 32 {
+		return nil, fmt.Errorf("invalid AES key length %d", len(key))
+	}
+	return key, nil
+}
+
+func decryptAESCBC(key, ciphertext []byte) ([]byte, error) {
+	if len(ciphertext) == 0 {
+		return nil, fmt.Errorf("ciphertext is empty")
+	}
+	if len(ciphertext)%aes.BlockSize != 0 {
+		return nil, fmt.Errorf("ciphertext length %d is not a multiple of block size", len(ciphertext))
+	}
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, fmt.Errorf("create cipher: %w", err)
+	}
+	plaintext := make([]byte, len(ciphertext))
+	iv := key[:aes.BlockSize]
+	cipher.NewCBCDecrypter(block, iv).CryptBlocks(plaintext, ciphertext)
+	return pkcs7Unpad(plaintext)
+}
+
+func pkcs7Unpad(data []byte) ([]byte, error) {
+	if len(data) == 0 {
+		return nil, fmt.Errorf("empty plaintext")
+	}
+	padding := int(data[len(data)-1])
+	if padding == 0 || padding > 32 || padding > len(data) {
+		return nil, fmt.Errorf("invalid padding size %d", padding)
+	}
+	for i := 0; i < padding; i++ {
+		if data[len(data)-1-i] != byte(padding) {
+			return nil, fmt.Errorf("invalid padding byte")
+		}
+	}
+	return data[:len(data)-padding], nil
+}
+
+func inferMediaExt(contentType, fallback string) string {
+	contentType = normalizeWeComContentType(contentType)
+	switch contentType {
+	case "image/jpeg", "image/jpg":
+		return ".jpg"
+	case "image/png":
+		return ".png"
+	case "image/gif":
+		return ".gif"
+	case "image/webp":
+		return ".webp"
+	case "application/pdf":
+		return ".pdf"
+	case "video/mp4":
+		return ".mp4"
+	default:
+		return fallback
+	}
+}
+
+func normalizeWeComContentType(value string) string {
+	value = strings.ToLower(strings.TrimSpace(value))
+	if idx := strings.Index(value, ";"); idx >= 0 {
+		value = strings.TrimSpace(value[:idx])
+	}
+	return value
+}
+
+func isGenericWeComContentType(value string) bool {
+	switch normalizeWeComContentType(value) {
+	case "", "application/octet-stream", "binary/octet-stream", "application/unknown", "application/binary":
+		return true
+	default:
+		return false
+	}
+}
+
+func sanitizeWeComFilename(name string) string {
+	name = filepath.Base(strings.TrimSpace(name))
+	if name == "." || name == "/" || name == "" {
+		return ""
+	}
+	return name
+}
+
+func candidateWeComFilename(resourceURL, contentDisposition, fallbackName string) string {
+	if _, params, err := mime.ParseMediaType(contentDisposition); err == nil {
+		if name := sanitizeWeComFilename(params["filename"]); name != "" {
+			return name
+		}
+		if name := sanitizeWeComFilename(params["filename*"]); name != "" {
+			return name
+		}
+	}
+
+	if parsed, err := url.Parse(resourceURL); err == nil {
+		query := parsed.Query()
+		for _, key := range []string{"filename", "file_name", "name"} {
+			if name := sanitizeWeComFilename(query.Get(key)); name != "" {
+				return name
+			}
+		}
+		if name := sanitizeWeComFilename(parsed.Path); name != "" {
+			return name
+		}
+	}
+
+	return sanitizeWeComFilename(fallbackName)
+}
+
+func detectWeComFiletype(data []byte) (string, string) {
+	kind, err := filetype.Match(data)
+	if err != nil || kind == filetype.Unknown {
+		return "", ""
+	}
+	ext := ""
+	if kind.Extension != "" {
+		ext = "." + strings.ToLower(kind.Extension)
+	}
+	return normalizeWeComContentType(kind.MIME.Value), ext
+}
+
+func detectWeComMediaMetadata(
+	data []byte,
+	fallbackName, fallbackContentType, resourceURL, contentDisposition string,
+) (string, string) {
+	filename := candidateWeComFilename(resourceURL, contentDisposition, fallbackName)
+	if filename == "" {
+		filename = "media"
+	}
+
+	ext := strings.ToLower(filepath.Ext(filename))
+	contentType := normalizeWeComContentType(fallbackContentType)
+	detectedType, detectedExt := detectWeComFiletype(data)
+
+	if ext != "" && isGenericWeComContentType(contentType) {
+		if byExt := normalizeWeComContentType(mime.TypeByExtension(ext)); byExt != "" {
+			contentType = byExt
+		}
+	}
+
+	if detectedType != "" {
+		switch {
+		case contentType == "":
+			contentType = detectedType
+		case isGenericWeComContentType(contentType):
+			contentType = detectedType
+		case strings.HasPrefix(detectedType, "image/") && !strings.HasPrefix(contentType, "image/"):
+			contentType = detectedType
+		case strings.HasPrefix(detectedType, "audio/") && !strings.HasPrefix(contentType, "audio/"):
+			contentType = detectedType
+		case strings.HasPrefix(detectedType, "video/") && !strings.HasPrefix(contentType, "video/"):
+			contentType = detectedType
+		}
+	}
+
+	if contentType == "" && ext != "" {
+		contentType = normalizeWeComContentType(mime.TypeByExtension(ext))
+	}
+	if contentType == "" {
+		contentType = normalizeWeComContentType(http.DetectContentType(data))
+	}
+
+	if ext == "" {
+		ext = detectedExt
+	}
+	if ext == "" && contentType != "" {
+		if exts, err := mime.ExtensionsByType(contentType); err == nil && len(exts) > 0 {
+			ext = strings.ToLower(exts[0])
+		}
+	}
+
+	if filepath.Ext(filename) == "" && ext != "" {
+		filename += ext
+	}
+	return filename, contentType
+}
+
+func (c *WeComChannel) storeRemoteMedia(
+	ctx context.Context,
+	scope, msgID, resourceURL, aesKey, fallbackExt string,
+) (string, error) {
+	store := c.GetMediaStore()
+	if store == nil {
+		return "", fmt.Errorf("no media store available")
+	}
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, resourceURL, nil)
+	if err != nil {
+		return "", fmt.Errorf("create request: %w", err)
+	}
+	resp, err := c.mediaClient.Do(req)
+	if err != nil {
+		return "", fmt.Errorf("download media: %w", err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("download media returned HTTP %d", resp.StatusCode)
+	}
+
+	data, err := io.ReadAll(io.LimitReader(resp.Body, wecomOutboundMediaMaxBytes+1))
+	if err != nil {
+		return "", fmt.Errorf("read media: %w", err)
+	}
+	if len(data) > wecomOutboundMediaMaxBytes {
+		return "", fmt.Errorf("media too large")
+	}
+
+	if aesKey != "" {
+		key, keyErr := decodeMediaAESKey(aesKey)
+		if keyErr != nil {
+			return "", keyErr
+		}
+		data, err = decryptAESCBC(key, data)
+		if err != nil {
+			return "", fmt.Errorf("decrypt media: %w", err)
+		}
+	}
+
+	filename, contentType := detectWeComMediaMetadata(
+		data,
+		msgID+fallbackExt,
+		resp.Header.Get("Content-Type"),
+		resourceURL,
+		resp.Header.Get("Content-Disposition"),
+	)
+	ext := filepath.Ext(filename)
+	if ext == "" {
+		ext = inferMediaExt(contentType, fallbackExt)
+	}
+	mediaDir := filepath.Join(os.TempDir(), "picoclaw_media")
+	if mkdirErr := os.MkdirAll(mediaDir, 0o700); mkdirErr != nil {
+		return "", fmt.Errorf("mkdir media dir: %w", mkdirErr)
+	}
+	tmpFile, err := os.CreateTemp(mediaDir, msgID+"-*"+ext)
+	if err != nil {
+		return "", fmt.Errorf("create temp file: %w", err)
+	}
+	tmpPath := tmpFile.Name()
+	if _, writeErr := tmpFile.Write(data); writeErr != nil {
+		tmpFile.Close()
+		_ = os.Remove(tmpPath)
+		return "", fmt.Errorf("write temp file: %w", writeErr)
+	}
+	if closeErr := tmpFile.Close(); closeErr != nil {
+		_ = os.Remove(tmpPath)
+		return "", fmt.Errorf("close temp file: %w", closeErr)
+	}
+
+	ref, err := store.Store(tmpPath, media.MediaMeta{
+		Filename:      filename,
+		ContentType:   contentType,
+		Source:        "wecom",
+		CleanupPolicy: media.CleanupPolicyDeleteOnCleanup,
+	}, scope)
+	if err != nil {
+		_ = os.Remove(tmpPath)
+		return "", err
+	}
+	return ref, nil
+}
+
+func detectLocalWeComContentType(localPath, hint string) string {
+	contentType := normalizeWeComContentType(hint)
+	if !isGenericWeComContentType(contentType) {
+		return contentType
+	}
+
+	if kind, err := filetype.MatchFile(localPath); err == nil && kind != filetype.Unknown {
+		return normalizeWeComContentType(kind.MIME.Value)
+	}
+
+	if ext := strings.ToLower(filepath.Ext(localPath)); ext != "" {
+		if byExt := normalizeWeComContentType(mime.TypeByExtension(ext)); byExt != "" {
+			return byExt
+		}
+	}
+
+	file, err := os.Open(localPath)
+	if err != nil {
+		return contentType
+	}
+	defer file.Close()
+
+	buf := make([]byte, 512)
+	n, err := file.Read(buf)
+	if err != nil && err != io.EOF {
+		return contentType
+	}
+	if n == 0 {
+		return contentType
+	}
+	return normalizeWeComContentType(http.DetectContentType(buf[:n]))
+}
+
+func writeWeComTempFile(prefix, filename string, data []byte) (string, error) {
+	mediaDir := filepath.Join(os.TempDir(), "picoclaw_media")
+	if err := os.MkdirAll(mediaDir, 0o700); err != nil {
+		return "", fmt.Errorf("mkdir media dir: %w", err)
+	}
+
+	ext := strings.ToLower(filepath.Ext(filename))
+	tmpFile, err := os.CreateTemp(mediaDir, prefix+"-*"+ext)
+	if err != nil {
+		return "", fmt.Errorf("create temp file: %w", err)
+	}
+	tmpPath := tmpFile.Name()
+
+	if _, err := tmpFile.Write(data); err != nil {
+		_ = tmpFile.Close()
+		_ = os.Remove(tmpPath)
+		return "", fmt.Errorf("write temp file: %w", err)
+	}
+	if err := tmpFile.Close(); err != nil {
+		_ = os.Remove(tmpPath)
+		return "", fmt.Errorf("close temp file: %w", err)
+	}
+	return tmpPath, nil
+}
+
+func (c *WeComChannel) downloadRemoteMediaToTemp(
+	ctx context.Context,
+	resourceURL, fallbackName string,
+) (string, string, string, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, resourceURL, nil)
+	if err != nil {
+		return "", "", "", fmt.Errorf("create request: %w", err)
+	}
+
+	resp, err := c.mediaClient.Do(req)
+	if err != nil {
+		return "", "", "", fmt.Errorf("download media: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(io.LimitReader(resp.Body, 1024))
+		return "", "", "", fmt.Errorf("download media returned HTTP %d: %s", resp.StatusCode, string(body))
+	}
+
+	data, err := io.ReadAll(io.LimitReader(resp.Body, wecomOutboundMediaMaxBytes+1))
+	if err != nil {
+		return "", "", "", fmt.Errorf("read media: %w", err)
+	}
+	if len(data) > wecomOutboundMediaMaxBytes {
+		return "", "", "", fmt.Errorf("media too large")
+	}
+
+	filename, contentType := detectWeComMediaMetadata(
+		data,
+		fallbackName,
+		resp.Header.Get("Content-Type"),
+		resourceURL,
+		resp.Header.Get("Content-Disposition"),
+	)
+	tmpPath, err := writeWeComTempFile("wecom-outbound", filename, data)
+	if err != nil {
+		return "", "", "", err
+	}
+	return tmpPath, filename, contentType, nil
+}
+
+func (c *WeComChannel) resolveOutboundPart(
+	ctx context.Context,
+	part bus.MediaPart,
+) (string, string, string, func(), error) {
+	cleanup := func() {}
+	filename := sanitizeWeComFilename(part.Filename)
+	contentType := normalizeWeComContentType(part.ContentType)
+	ref := strings.TrimSpace(part.Ref)
+
+	switch {
+	case ref == "":
+		return "", filename, contentType, cleanup, nil
+
+	case strings.HasPrefix(ref, "http://") || strings.HasPrefix(ref, "https://"):
+		localPath, name, ct, err := c.downloadRemoteMediaToTemp(ctx, ref, filename)
+		if err != nil {
+			return "", "", "", cleanup, err
+		}
+		return localPath, name, ct, func() { _ = os.Remove(localPath) }, nil
+
+	case strings.HasPrefix(ref, "media://"):
+		store := c.GetMediaStore()
+		if store == nil {
+			return "", "", "", cleanup, fmt.Errorf("no media store available")
+		}
+
+		localPath, meta, err := store.ResolveWithMeta(ref)
+		if err != nil {
+			return "", "", "", cleanup, err
+		}
+		if filename == "" {
+			filename = sanitizeWeComFilename(meta.Filename)
+		}
+		if contentType == "" {
+			contentType = normalizeWeComContentType(meta.ContentType)
+		}
+		if strings.HasPrefix(localPath, "http://") || strings.HasPrefix(localPath, "https://") {
+			tmpPath, name, ct, err := c.downloadRemoteMediaToTemp(ctx, localPath, filename)
+			if err != nil {
+				return "", "", "", cleanup, err
+			}
+			return tmpPath, name, ct, func() { _ = os.Remove(tmpPath) }, nil
+		}
+		if _, err := os.Stat(localPath); err != nil {
+			return "", "", "", cleanup, err
+		}
+		if filename == "" {
+			filename = sanitizeWeComFilename(filepath.Base(localPath))
+		}
+		if contentType == "" {
+			contentType = detectLocalWeComContentType(localPath, "")
+		}
+		return localPath, filename, contentType, cleanup, nil
+
+	case strings.HasPrefix(ref, "file://"):
+		u, err := url.Parse(ref)
+		if err != nil {
+			return "", "", "", cleanup, err
+		}
+		localPath := u.Path
+		if _, err := os.Stat(localPath); err != nil {
+			return "", "", "", cleanup, err
+		}
+		if filename == "" {
+			filename = sanitizeWeComFilename(filepath.Base(localPath))
+		}
+		if contentType == "" {
+			contentType = detectLocalWeComContentType(localPath, "")
+		}
+		return localPath, filename, contentType, cleanup, nil
+
+	default:
+		if _, err := os.Stat(ref); err != nil {
+			return "", "", "", cleanup, err
+		}
+		if filename == "" {
+			filename = sanitizeWeComFilename(filepath.Base(ref))
+		}
+		if contentType == "" {
+			contentType = detectLocalWeComContentType(ref, "")
+		}
+		return ref, filename, contentType, cleanup, nil
+	}
+}
+
+func canWeComSendImage(contentType, ext string, size int64) bool {
+	if size > wecomOutboundImageMaxBytes {
+		return false
+	}
+	switch normalizeWeComContentType(contentType) {
+	case "image/jpeg", "image/jpg", "image/png", "image/gif":
+		return true
+	}
+	switch strings.ToLower(ext) {
+	case ".jpg", ".jpeg", ".png", ".gif":
+		return true
+	default:
+		return false
+	}
+}
+
+func canWeComSendVoice(contentType, ext string, size int64) bool {
+	if size > wecomOutboundVoiceMaxBytes {
+		return false
+	}
+	contentType = normalizeWeComContentType(contentType)
+	return strings.Contains(contentType, "amr") || strings.EqualFold(ext, ".amr")
+}
+
+func canWeComSendVideo(contentType, ext string, size int64) bool {
+	if size > wecomOutboundVideoMaxBytes {
+		return false
+	}
+	return normalizeWeComContentType(contentType) == "video/mp4" || strings.EqualFold(ext, ".mp4")
+}
+
+func outboundWeComMediaKind(partType, filename, contentType string, size int64) string {
+	if size < wecomUploadMinBytes {
+		return ""
+	}
+
+	partType = strings.ToLower(strings.TrimSpace(partType))
+	contentType = normalizeWeComContentType(contentType)
+	ext := strings.ToLower(filepath.Ext(filename))
+
+	if partType == "file" {
+		if size <= wecomOutboundMediaMaxBytes {
+			return "file"
+		}
+		return ""
+	}
+
+	if (partType == "image" || partType == "") && canWeComSendImage(contentType, ext, size) {
+		return "image"
+	}
+	if (partType == "audio" || partType == "voice" || partType == "") && canWeComSendVoice(contentType, ext, size) {
+		return "voice"
+	}
+	if (partType == "video" || partType == "") && canWeComSendVideo(contentType, ext, size) {
+		return "video"
+	}
+	if size <= wecomOutboundMediaMaxBytes {
+		return "file"
+	}
+	return ""
+}
+
+func trimWeComBytes(value string, limit int) string {
+	value = strings.TrimSpace(value)
+	if limit <= 0 || len(value) <= limit {
+		return value
+	}
+	size := 0
+	var out strings.Builder
+	for _, r := range value {
+		width := len(string(r))
+		if size+width > limit {
+			break
+		}
+		size += width
+		out.WriteRune(r)
+	}
+	return out.String()
+}
+
+func ensureWeComOutboundFilename(filename, localPath, contentType string) string {
+	filename = sanitizeWeComFilename(filename)
+	if filename == "" {
+		filename = sanitizeWeComFilename(filepath.Base(localPath))
+	}
+	if filename == "" {
+		filename = "media"
+	}
+	if filepath.Ext(filename) == "" {
+		fallbackExt := inferMediaExt(contentType, strings.ToLower(filepath.Ext(localPath)))
+		if fallbackExt != "" {
+			filename += fallbackExt
+		}
+	}
+	filename = trimWeComBytes(filename, 256)
+	if filename == "" {
+		return "media"
+	}
+	return filename
+}
+
+func buildWeComVideoContent(mediaID, filename, description string) *wecomVideoContent {
+	title := strings.TrimSuffix(filename, filepath.Ext(filename))
+	title = trimWeComBytes(title, 64)
+	if title == "" {
+		title = "video"
+	}
+	description = trimWeComBytes(description, 512)
+	return &wecomVideoContent{
+		MediaID:     mediaID,
+		Title:       title,
+		Description: description,
+	}
+}
+
+func decodeWeComEnvelopeBody[T any](env wecomEnvelope) (T, error) {
+	var out T
+	if len(env.Body) == 0 {
+		return out, fmt.Errorf("wecom response body is empty")
+	}
+	if err := json.Unmarshal(env.Body, &out); err != nil {
+		return out, fmt.Errorf("decode wecom response body: %w", err)
+	}
+	return out, nil
+}
+
+func (c *WeComChannel) uploadOutboundMedia(
+	ctx context.Context,
+	localPath, filename, contentType string,
+	part bus.MediaPart,
+) (*wecomOutboundMedia, error) {
+	_ = ctx
+
+	contentType = detectLocalWeComContentType(localPath, contentType)
+	filename = ensureWeComOutboundFilename(filename, localPath, contentType)
+
+	data, err := os.ReadFile(localPath)
+	if err != nil {
+		return nil, fmt.Errorf("read media file: %w", err)
+	}
+	size := int64(len(data))
+	kind := outboundWeComMediaKind(part.Type, filename, contentType, size)
+	if kind == "" {
+		return nil, fmt.Errorf("unsupported wecom media type or size for %q", filename)
+	}
+
+	totalChunks := (len(data) + wecomUploadChunkMaxBytes - 1) / wecomUploadChunkMaxBytes
+	if totalChunks <= 0 || totalChunks > wecomUploadMaxChunks {
+		return nil, fmt.Errorf("wecom upload requires 1-%d chunks, got %d", wecomUploadMaxChunks, totalChunks)
+	}
+
+	sum := md5.Sum(data)
+	initEnv, err := c.sendCommandAck(wecomCommand{
+		Cmd:     wecomCmdUploadMediaInit,
+		Headers: wecomHeaders{ReqID: randomID(10)},
+		Body: wecomUploadMediaInitBody{
+			Type:        kind,
+			Filename:    filename,
+			TotalSize:   size,
+			TotalChunks: totalChunks,
+			MD5:         hex.EncodeToString(sum[:]),
+		},
+	}, wecomUploadTimeout)
+	if err != nil {
+		return nil, err
+	}
+	initResp, err := decodeWeComEnvelopeBody[wecomUploadMediaInitResponse](initEnv)
+	if err != nil {
+		return nil, err
+	}
+	if strings.TrimSpace(initResp.UploadID) == "" {
+		return nil, fmt.Errorf("wecom upload init returned empty upload_id")
+	}
+
+	for idx, offset := 0, 0; offset < len(data); idx, offset = idx+1, offset+wecomUploadChunkMaxBytes {
+		end := offset + wecomUploadChunkMaxBytes
+		if end > len(data) {
+			end = len(data)
+		}
+		sendErr := c.sendCommand(wecomCommand{
+			Cmd:     wecomCmdUploadMediaChunk,
+			Headers: wecomHeaders{ReqID: randomID(10)},
+			Body: wecomUploadMediaChunkBody{
+				UploadID:   initResp.UploadID,
+				ChunkIndex: idx,
+				Base64Data: base64.StdEncoding.EncodeToString(data[offset:end]),
+			},
+		}, wecomUploadTimeout)
+		if sendErr != nil {
+			return nil, sendErr
+		}
+	}
+
+	finishEnv, err := c.sendCommandAck(wecomCommand{
+		Cmd:     wecomCmdUploadMediaEnd,
+		Headers: wecomHeaders{ReqID: randomID(10)},
+		Body: wecomUploadMediaFinishBody{
+			UploadID: initResp.UploadID,
+		},
+	}, wecomUploadTimeout)
+	if err != nil {
+		return nil, err
+	}
+	finishResp, err := decodeWeComEnvelopeBody[wecomUploadMediaFinishResponse](finishEnv)
+	if err != nil {
+		return nil, err
+	}
+	if strings.TrimSpace(finishResp.MediaID) == "" {
+		return nil, fmt.Errorf("wecom upload finish returned empty media_id")
+	}
+
+	uploaded := &wecomOutboundMedia{
+		MsgType: kind,
+		MediaID: finishResp.MediaID,
+	}
+	if kind == "video" {
+		video := buildWeComVideoContent(finishResp.MediaID, filename, part.Caption)
+		uploaded.Title = video.Title
+		uploaded.Description = video.Description
+	}
+	return uploaded, nil
+}
+
+func fallbackWeComMediaText(part bus.MediaPart, kind, filename string) string {
+	var lines []string
+	if caption := strings.TrimSpace(part.Caption); caption != "" {
+		lines = append(lines, caption)
+	}
+
+	label := kind
+	if label == "" {
+		label = "media"
+	}
+	if filename != "" {
+		lines = append(lines, fmt.Sprintf("[%s: %s]", label, filename))
+	} else {
+		lines = append(lines, fmt.Sprintf("[%s attachment]", label))
+	}
+
+	ref := strings.TrimSpace(part.Ref)
+	if strings.HasPrefix(ref, "http://") || strings.HasPrefix(ref, "https://") {
+		lines = append(lines, ref)
+	}
+
+	return strings.Join(lines, "\n")
+}
+
+func (c *WeComChannel) resolveMediaRoute(chatID string) (wecomTurn, uint32, bool) {
+	if turn, ok := c.getTurn(chatID); ok {
+		if time.Since(turn.CreatedAt) <= wecomStreamMaxDuration {
+			return turn, turn.ChatType, true
+		}
+		c.deleteTurn(chatID)
+	}
+	if route, ok := c.routes.Get(chatID); ok {
+		return wecomTurn{ChatID: route.ChatID, ChatType: route.ChatType}, route.ChatType, false
+	}
+	return wecomTurn{ChatID: chatID}, 0, false
+}
--- a/pkg/channels/wecom/media_test.go
+++ b/pkg/channels/wecom/media_test.go
@ -0,0 +1,180 @@
+package wecom
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+
+	basechannels "github.com/sipeed/picoclaw/pkg/channels"
+	"github.com/sipeed/picoclaw/pkg/media"
+)
+
+func TestStoreRemoteMedia_DetectsJPEGContentTypeFromBody(t *testing.T) {
+	t.Parallel()
+
+	const jpegBase64 = "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAP//////////////////////////////////////////////////////////////////////////////////////" +
+		"//////////////////////////////////////////////////////////////////////////////////////////////2wBDAf//////////////////////////////////////////////////////////////////////////////////////" +
+		"//////////////////////////////////////////////////////////////////////////////////////////////wAARCAABAAEDASIAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAb/xAAVEQEBAAAAAAAAAAAAAAAAAAAABf/aAAwDAQACEAMQAAAB6A//xAAVEAEBAAAAAAAAAAAAAAAAAAAAEf/aAAgBAQABBQJf/8QAFBEBAAAAAAAAAAAAAAAAAAAAEP/aAAgBAwEBPwF//8QAFBEBAAAAAAAAAAAAAAAAAAAAEP/aAAgBAgEBPwF//8QAFBABAAAAAAAAAAAAAAAAAAAAEP/aAAgBAQAGPwJf/8QAFBABAAAAAAAAAAAAAAAAAAAAEP/aAAgBAQABPyFf/9k="
+
+	jpegData := decodeTestBase64(t, jpegBase64)
+	store := media.NewFileMediaStore()
+	ch := &WeComChannel{
+		BaseChannel: basechannels.NewBaseChannel("wecom", nil, nil, nil),
+		mediaClient: &http.Client{
+			Transport: roundTripFunc(func(*http.Request) (*http.Response, error) {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Header:     http.Header{"Content-Type": []string{"application/octet-stream"}},
+					Body:       io.NopCloser(bytes.NewReader(jpegData)),
+				}, nil
+			}),
+		},
+	}
+	ch.SetMediaStore(store)
+
+	ref, err := ch.storeRemoteMedia(context.Background(), "test-scope", "msg-1", "https://wecom.example/media", "", "")
+	if err != nil {
+		t.Fatalf("storeRemoteMedia returned error: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = store.ReleaseAll("test-scope")
+	})
+
+	_, meta, err := store.ResolveWithMeta(ref)
+	if err != nil {
+		t.Fatalf("resolve media ref: %v", err)
+	}
+	if meta.ContentType != "image/jpeg" {
+		t.Fatalf("expected image/jpeg content type, got %q", meta.ContentType)
+	}
+	if !strings.HasSuffix(meta.Filename, ".jpg") && !strings.HasSuffix(meta.Filename, ".jpeg") {
+		t.Fatalf("expected jpeg filename, got %q", meta.Filename)
+	}
+}
+
+func TestDetectWeComMediaMetadata_UsesFallbackExtensionWhenBodyUnknown(t *testing.T) {
+	t.Parallel()
+
+	filename, contentType := detectWeComMediaMetadata([]byte("not a real image"), "msg-2.pdf", "", "", "")
+	if filename != "msg-2.pdf" {
+		t.Fatalf("expected fallback filename to be preserved, got %q", filename)
+	}
+	if contentType != "application/pdf" {
+		t.Fatalf("expected application/pdf from fallback extension, got %q", contentType)
+	}
+}
+
+func TestStoreRemoteMedia_PreservesSuffixFromURL(t *testing.T) {
+	t.Parallel()
+
+	docxLikeData := []byte("PK\x03\x04fake office payload")
+	store := media.NewFileMediaStore()
+	ch := &WeComChannel{
+		BaseChannel: basechannels.NewBaseChannel("wecom", nil, nil, nil),
+		mediaClient: &http.Client{
+			Transport: roundTripFunc(func(*http.Request) (*http.Response, error) {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Header:     http.Header{"Content-Type": []string{"application/octet-stream"}},
+					Body:       io.NopCloser(bytes.NewReader(docxLikeData)),
+				}, nil
+			}),
+		},
+	}
+	ch.SetMediaStore(store)
+
+	ref, err := ch.storeRemoteMedia(
+		context.Background(),
+		"test-scope",
+		"msg-docx",
+		"https://wecom.example/media/report.docx?signature=1",
+		"",
+		".bin",
+	)
+	if err != nil {
+		t.Fatalf("storeRemoteMedia returned error: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = store.ReleaseAll("test-scope")
+	})
+
+	localPath, meta, err := store.ResolveWithMeta(ref)
+	if err != nil {
+		t.Fatalf("resolve media ref: %v", err)
+	}
+	if !strings.HasSuffix(meta.Filename, ".docx") {
+		t.Fatalf("expected docx filename, got %q", meta.Filename)
+	}
+	if !strings.HasSuffix(strings.ToLower(localPath), ".docx") {
+		t.Fatalf("expected docx temp path, got %q", localPath)
+	}
+}
+
+func TestStoreRemoteMedia_PreservesSuffixFromContentDisposition(t *testing.T) {
+	t.Parallel()
+
+	pptxLikeData := []byte("PK\x03\x04fake office payload")
+	store := media.NewFileMediaStore()
+	ch := &WeComChannel{
+		BaseChannel: basechannels.NewBaseChannel("wecom", nil, nil, nil),
+		mediaClient: &http.Client{
+			Transport: roundTripFunc(func(*http.Request) (*http.Response, error) {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Header: http.Header{
+						"Content-Type":        []string{"application/octet-stream"},
+						"Content-Disposition": []string{`attachment; filename="slides.pptx"`},
+					},
+					Body: io.NopCloser(bytes.NewReader(pptxLikeData)),
+				}, nil
+			}),
+		},
+	}
+	ch.SetMediaStore(store)
+
+	ref, err := ch.storeRemoteMedia(
+		context.Background(),
+		"test-scope",
+		"msg-pptx",
+		"https://wecom.example/media/download",
+		"",
+		".bin",
+	)
+	if err != nil {
+		t.Fatalf("storeRemoteMedia returned error: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = store.ReleaseAll("test-scope")
+	})
+
+	localPath, meta, err := store.ResolveWithMeta(ref)
+	if err != nil {
+		t.Fatalf("resolve media ref: %v", err)
+	}
+	if !strings.HasSuffix(meta.Filename, ".pptx") {
+		t.Fatalf("expected pptx filename, got %q", meta.Filename)
+	}
+	if !strings.HasSuffix(strings.ToLower(localPath), ".pptx") {
+		t.Fatalf("expected pptx temp path, got %q", localPath)
+	}
+}
+
+func decodeTestBase64(t *testing.T, value string) []byte {
+	t.Helper()
+
+	data, err := io.ReadAll(base64.NewDecoder(base64.StdEncoding, strings.NewReader(value)))
+	if err != nil {
+		t.Fatalf("decode base64 fixture: %v", err)
+	}
+	return data
+}
+
+type roundTripFunc func(*http.Request) (*http.Response, error)
+
+func (f roundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
+	return f(req)
+}
--- a/pkg/channels/wecom/protocol.go
+++ b/pkg/channels/wecom/protocol.go
@ -0,0 +1,173 @@
+package wecom
+
+import "encoding/json"
+
+const (
+	wecomDefaultWebSocketURL = "wss://openws.work.weixin.qq.com"
+	wecomCmdSubscribe        = "aibot_subscribe"
+	wecomCmdPing             = "ping"
+	wecomCmdMsgCallback      = "aibot_msg_callback"
+	wecomCmdEventCallback    = "aibot_event_callback"
+	wecomCmdRespondMsg       = "aibot_respond_msg"
+	wecomCmdSendMsg          = "aibot_send_msg"
+	wecomCmdUploadMediaInit  = "aibot_upload_media_init"
+	wecomCmdUploadMediaChunk = "aibot_upload_media_chunk"
+	wecomCmdUploadMediaEnd   = "aibot_upload_media_finish"
+)
+
+type wecomEnvelope struct {
+	Cmd     string          `json:"cmd,omitempty"`
+	Headers wecomHeaders    `json:"headers"`
+	Body    json.RawMessage `json:"body,omitempty"`
+	ErrCode int             `json:"errcode,omitempty"`
+	ErrMsg  string          `json:"errmsg,omitempty"`
+}
+
+type wecomHeaders struct {
+	ReqID string `json:"req_id,omitempty"`
+}
+
+type wecomCommand struct {
+	Cmd     string       `json:"cmd"`
+	Headers wecomHeaders `json:"headers"`
+	Body    any          `json:"body,omitempty"`
+}
+
+type wecomSendMsgBody struct {
+	ChatID       string                `json:"chatid"`
+	ChatType     uint32                `json:"chat_type,omitempty"`
+	MsgType      string                `json:"msgtype"`
+	Markdown     *wecomMarkdownContent `json:"markdown,omitempty"`
+	File         *wecomMediaRefContent `json:"file,omitempty"`
+	Image        *wecomMediaRefContent `json:"image,omitempty"`
+	Voice        *wecomMediaRefContent `json:"voice,omitempty"`
+	Video        *wecomVideoContent    `json:"video,omitempty"`
+	TemplateCard map[string]any        `json:"template_card,omitempty"`
+}
+
+type wecomRespondMsgBody struct {
+	MsgType      string                `json:"msgtype"`
+	Stream       *wecomStreamContent   `json:"stream,omitempty"`
+	Markdown     *wecomMarkdownContent `json:"markdown,omitempty"`
+	File         *wecomMediaRefContent `json:"file,omitempty"`
+	Image        *wecomMediaRefContent `json:"image,omitempty"`
+	Voice        *wecomMediaRefContent `json:"voice,omitempty"`
+	Video        *wecomVideoContent    `json:"video,omitempty"`
+	TemplateCard map[string]any        `json:"template_card,omitempty"`
+}
+
+type wecomStreamContent struct {
+	ID      string `json:"id"`
+	Finish  bool   `json:"finish"`
+	Content string `json:"content,omitempty"`
+}
+
+type wecomMarkdownContent struct {
+	Content string `json:"content"`
+}
+
+type wecomMediaRefContent struct {
+	MediaID string `json:"media_id"`
+}
+
+type wecomVideoContent struct {
+	MediaID     string `json:"media_id"`
+	Title       string `json:"title,omitempty"`
+	Description string `json:"description,omitempty"`
+}
+
+type wecomUploadMediaInitBody struct {
+	Type        string `json:"type"`
+	Filename    string `json:"filename"`
+	TotalSize   int64  `json:"total_size"`
+	TotalChunks int    `json:"total_chunks"`
+	MD5         string `json:"md5,omitempty"`
+}
+
+type wecomUploadMediaInitResponse struct {
+	UploadID string `json:"upload_id"`
+}
+
+type wecomUploadMediaChunkBody struct {
+	UploadID   string `json:"upload_id"`
+	ChunkIndex int    `json:"chunk_index"`
+	Base64Data string `json:"base64_data"`
+}
+
+type wecomUploadMediaFinishBody struct {
+	UploadID string `json:"upload_id"`
+}
+
+type wecomUploadMediaFinishResponse struct {
+	Type      string          `json:"type"`
+	MediaID   string          `json:"media_id"`
+	CreatedAt json.RawMessage `json:"created_at"`
+}
+
+type wecomIncomingMessage struct {
+	MsgID    string `json:"msgid"`
+	AIBotID  string `json:"aibotid"`
+	ChatID   string `json:"chatid,omitempty"`
+	ChatType string `json:"chattype,omitempty"`
+	From     struct {
+		UserID string `json:"userid"`
+	} `json:"from"`
+	MsgType string `json:"msgtype"`
+	Text    *struct {
+		Content string `json:"content"`
+	} `json:"text,omitempty"`
+	Image *struct {
+		URL    string `json:"url"`
+		AESKey string `json:"aeskey,omitempty"`
+	} `json:"image,omitempty"`
+	File *struct {
+		URL    string `json:"url"`
+		AESKey string `json:"aeskey,omitempty"`
+	} `json:"file,omitempty"`
+	Video *struct {
+		URL    string `json:"url"`
+		AESKey string `json:"aeskey,omitempty"`
+	} `json:"video,omitempty"`
+	Voice *struct {
+		Content string `json:"content"`
+	} `json:"voice,omitempty"`
+	Mixed *struct {
+		MsgItem []struct {
+			MsgType string `json:"msgtype"`
+			Text    *struct {
+				Content string `json:"content"`
+			} `json:"text,omitempty"`
+			Image *struct {
+				URL    string `json:"url"`
+				AESKey string `json:"aeskey,omitempty"`
+			} `json:"image,omitempty"`
+			File *struct {
+				URL    string `json:"url"`
+				AESKey string `json:"aeskey,omitempty"`
+			} `json:"file,omitempty"`
+		} `json:"msg_item"`
+	} `json:"mixed,omitempty"`
+	Quote *struct {
+		MsgType string `json:"msgtype"`
+		Text    *struct {
+			Content string `json:"content"`
+		} `json:"text,omitempty"`
+	} `json:"quote,omitempty"`
+	Event *struct {
+		EventType string `json:"eventtype"`
+	} `json:"event,omitempty"`
+}
+
+func incomingChatID(msg wecomIncomingMessage) string {
+	if msg.ChatID != "" {
+		return msg.ChatID
+	}
+	return msg.From.UserID
+}
+
+func incomingChatTypeCode(kind string) uint32 {
+	if kind == "group" {
+		return 2
+	}
+	return 1
+}
--- a/pkg/channels/wecom/reqid_store.go
+++ b/pkg/channels/wecom/reqid_store.go
@ -0,0 +1,113 @@
+package wecom
+
+import (
+	"encoding/json"
+	"errors"
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+)
+
+type wecomRoute struct {
+	ReqID     string    `json:"req_id"`
+	ChatID    string    `json:"chat_id"`
+	ChatType  uint32    `json:"chat_type"`
+	ExpiresAt time.Time `json:"expires_at"`
+}
+
+type reqIDStore struct {
+	mu     sync.Mutex
+	path   string
+	routes map[string]wecomRoute
+}
+
+func newReqIDStore(path string) *reqIDStore {
+	if path == "" {
+		path = defaultReqIDStorePath()
+	}
+	s := &reqIDStore{
+		path:   path,
+		routes: make(map[string]wecomRoute),
+	}
+	_ = s.load()
+	return s
+}
+
+func defaultReqIDStorePath() string {
+	if home, err := os.UserHomeDir(); err == nil && home != "" {
+		return filepath.Join(home, ".picoclaw", "wecom", "reqid-store.json")
+	}
+	return filepath.Join(os.TempDir(), "picoclaw-wecom-reqid-store.json")
+}
+
+func (s *reqIDStore) Put(chatID, reqID string, chatType uint32, ttl time.Duration) error {
+	if reqID == "" || chatID == "" {
+		return nil
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	s.deleteExpiredLocked(time.Now())
+	s.routes[chatID] = wecomRoute{
+		ReqID:     reqID,
+		ChatID:    chatID,
+		ChatType:  chatType,
+		ExpiresAt: time.Now().Add(ttl),
+	}
+	return s.saveLocked()
+}
+
+func (s *reqIDStore) Get(chatID string) (wecomRoute, bool) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	s.deleteExpiredLocked(time.Now())
+	route, ok := s.routes[chatID]
+	return route, ok
+}
+
+func (s *reqIDStore) Delete(chatID string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	delete(s.routes, chatID)
+	return s.saveLocked()
+}
+
+func (s *reqIDStore) load() error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	data, err := os.ReadFile(s.path)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return nil
+		}
+		return err
+	}
+
+	var routes map[string]wecomRoute
+	if err := json.Unmarshal(data, &routes); err != nil {
+		return err
+	}
+	s.routes = routes
+	s.deleteExpiredLocked(time.Now())
+	return nil
+}
+
+func (s *reqIDStore) deleteExpiredLocked(now time.Time) {
+	for chatID, route := range s.routes {
+		if !route.ExpiresAt.IsZero() && now.After(route.ExpiresAt) {
+			delete(s.routes, chatID)
+		}
+	}
+}
+
+func (s *reqIDStore) saveLocked() error {
+	if err := os.MkdirAll(filepath.Dir(s.path), 0o700); err != nil {
+		return err
+	}
+	data, err := json.MarshalIndent(s.routes, "", "  ")
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(s.path, data, 0o600)
+}
--- a/pkg/channels/wecom/reqid_store_test.go
+++ b/pkg/channels/wecom/reqid_store_test.go
@ -0,0 +1,24 @@
+package wecom
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestReqIDStorePersistsRoutes(t *testing.T) {
+	storePath := filepath.Join(t.TempDir(), "reqids.json")
+	store := newReqIDStore(storePath)
+	if err := store.Put("chat-1", "req-1", 2, time.Hour); err != nil {
+		t.Fatalf("Put() error = %v", err)
+	}
+
+	reloaded := newReqIDStore(storePath)
+	route, ok := reloaded.Get("chat-1")
+	if !ok {
+		t.Fatal("expected persisted route to be loaded")
+	}
+	if route.ChatID != "chat-1" || route.ReqID != "req-1" || route.ChatType != 2 {
+		t.Fatalf("loaded route = %+v", route)
+	}
+}
--- a/pkg/channels/wecom/wecom.go
+++ b/pkg/channels/wecom/wecom.go
@ -0,0 +1,970 @@
+package wecom
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/json"
+	"fmt"
+	"math/big"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/gorilla/websocket"
+
+	"github.com/sipeed/picoclaw/pkg/bus"
+	"github.com/sipeed/picoclaw/pkg/channels"
+	"github.com/sipeed/picoclaw/pkg/config"
+	"github.com/sipeed/picoclaw/pkg/identity"
+	"github.com/sipeed/picoclaw/pkg/logger"
+)
+
+const (
+	wecomConnectTimeout    = 15 * time.Second
+	wecomCommandTimeout    = 10 * time.Second
+	wecomUploadTimeout     = 30 * time.Second
+	wecomHeartbeatInterval = 30 * time.Second
+	wecomStreamMaxDuration = 5*time.Minute + 30*time.Second
+	wecomStreamMinInterval = 500 * time.Millisecond
+	wecomRouteTTL          = 30 * time.Minute
+	wecomMediaTimeout      = 30 * time.Second
+	wecomRecentMessageMax  = 1000
+)
+
+type WeComChannel struct {
+	*channels.BaseChannel
+	config config.WeComConfig
+
+	ctx    context.Context
+	cancel context.CancelFunc
+
+	conn   *websocket.Conn
+	connMu sync.Mutex
+
+	pendingMu sync.Mutex
+	pending   map[string]chan wecomEnvelope
+
+	turnsMu sync.Mutex
+	turns   map[string][]wecomTurn
+
+	recent      *recentMessageSet
+	routes      *reqIDStore
+	mediaClient *http.Client
+	commandSend func(wecomCommand, time.Duration) (wecomEnvelope, error)
+}
+
+type wecomTurn struct {
+	ReqID     string
+	ChatID    string
+	ChatType  uint32
+	StreamID  string
+	CreatedAt time.Time
+}
+
+type wecomStreamer struct {
+	channel *WeComChannel
+	chatID  string
+	turn    wecomTurn
+
+	mu         sync.Mutex
+	closed     bool
+	lastSentAt time.Time
+	content    string
+}
+
+type recentMessageSet struct {
+	mu   sync.Mutex
+	seen map[string]struct{}
+	ring []string
+	idx  int
+}
+
+func newRecentMessageSet(capacity int) *recentMessageSet {
+	if capacity <= 0 {
+		capacity = wecomRecentMessageMax
+	}
+	return &recentMessageSet{
+		seen: make(map[string]struct{}, capacity),
+		ring: make([]string, capacity),
+	}
+}
+
+func (s *recentMessageSet) Mark(id string) bool {
+	if id == "" {
+		return true
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if _, ok := s.seen[id]; ok {
+		return false
+	}
+	if old := s.ring[s.idx]; old != "" {
+		delete(s.seen, old)
+	}
+	s.ring[s.idx] = id
+	s.idx = (s.idx + 1) % len(s.ring)
+	s.seen[id] = struct{}{}
+	return true
+}
+
+func NewChannel(cfg config.WeComConfig, messageBus *bus.MessageBus) (*WeComChannel, error) {
+	if cfg.BotID == "" || cfg.Secret.String() == "" {
+		return nil, fmt.Errorf("wecom bot_id and secret are required")
+	}
+	if cfg.WebSocketURL == "" {
+		cfg.WebSocketURL = wecomDefaultWebSocketURL
+	}
+
+	base := channels.NewBaseChannel(
+		"wecom",
+		cfg,
+		messageBus,
+		cfg.AllowFrom,
+		channels.WithReasoningChannelID(cfg.ReasoningChannelID),
+	)
+
+	ch := &WeComChannel{
+		BaseChannel: base,
+		config:      cfg,
+		pending:     make(map[string]chan wecomEnvelope),
+		turns:       make(map[string][]wecomTurn),
+		recent:      newRecentMessageSet(wecomRecentMessageMax),
+		routes:      newReqIDStore(""),
+		mediaClient: &http.Client{Timeout: wecomMediaTimeout},
+	}
+	ch.SetOwner(ch)
+	return ch, nil
+}
+
+func (c *WeComChannel) Name() string { return "wecom" }
+
+func (c *WeComChannel) Start(ctx context.Context) error {
+	logger.InfoC("wecom", "Starting WeCom channel...")
+	c.ctx, c.cancel = context.WithCancel(ctx)
+	c.SetRunning(true)
+	go c.connectLoop()
+	return nil
+}
+
+func (c *WeComChannel) Stop(_ context.Context) error {
+	logger.InfoC("wecom", "Stopping WeCom channel...")
+	if c.cancel != nil {
+		c.cancel()
+	}
+	c.connMu.Lock()
+	if c.conn != nil {
+		_ = c.conn.Close()
+		c.conn = nil
+	}
+	c.connMu.Unlock()
+	c.clearTurns()
+	c.SetRunning(false)
+	return nil
+}
+
+func (c *WeComChannel) BeginStream(_ context.Context, chatID string) (channels.Streamer, error) {
+	if !c.IsRunning() {
+		return nil, channels.ErrNotRunning
+	}
+
+	turn, ok := c.getTurn(chatID)
+	if !ok {
+		return nil, fmt.Errorf("wecom streaming unavailable: no active turn")
+	}
+	if time.Since(turn.CreatedAt) > wecomStreamMaxDuration {
+		c.consumeTurn(chatID, turn)
+		return nil, fmt.Errorf("wecom streaming unavailable: turn expired")
+	}
+
+	return &wecomStreamer{
+		channel: c,
+		chatID:  chatID,
+		turn:    turn,
+	}, nil
+}
+
+func (c *WeComChannel) Send(ctx context.Context, msg bus.OutboundMessage) error {
+	if !c.IsRunning() {
+		return channels.ErrNotRunning
+	}
+	content := strings.TrimSpace(msg.Content)
+	if content == "" {
+		return nil
+	}
+
+	if turn, ok := c.getTurn(msg.ChatID); ok {
+		if time.Since(turn.CreatedAt) <= wecomStreamMaxDuration {
+			if err := c.sendStreamReply(turn, content); err == nil {
+				c.consumeTurn(msg.ChatID, turn)
+				return nil
+			}
+		}
+		c.consumeTurn(msg.ChatID, turn)
+	}
+
+	if route, ok := c.routes.Get(msg.ChatID); ok {
+		if err := c.sendActivePush(route.ChatID, route.ChatType, content); err != nil {
+			return err
+		}
+		return nil
+	}
+
+	if err := c.sendActivePush(msg.ChatID, 0, content); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (c *WeComChannel) SendMedia(ctx context.Context, msg bus.OutboundMediaMessage) error {
+	if !c.IsRunning() {
+		return channels.ErrNotRunning
+	}
+
+	route, chatType, hasTurn := c.resolveMediaRoute(msg.ChatID)
+	chatID := route.ChatID
+	if chatID == "" {
+		chatID = msg.ChatID
+	}
+
+	for _, part := range msg.Parts {
+		if strings.TrimSpace(part.Ref) == "" {
+			if caption := strings.TrimSpace(part.Caption); caption != "" {
+				if err := c.sendActivePush(chatID, chatType, caption); err != nil {
+					return err
+				}
+			}
+			continue
+		}
+
+		localPath, filename, contentType, cleanup, err := c.resolveOutboundPart(ctx, part)
+		if err != nil {
+			return fmt.Errorf("wecom resolve media %q: %v: %w", part.Ref, err, channels.ErrSendFailed)
+		}
+
+		func() {
+			if cleanup != nil {
+				defer cleanup()
+			}
+
+			uploaded, uploadErr := c.uploadOutboundMedia(ctx, localPath, filename, contentType, part)
+			if uploadErr != nil {
+				logger.WarnCF("wecom", "Falling back to placeholder after media upload failure", map[string]any{
+					"chat_id":      chatID,
+					"ref":          part.Ref,
+					"filename":     filename,
+					"content_type": contentType,
+					"error":        uploadErr.Error(),
+				})
+				if hasTurn {
+					if finishErr := c.sendStreamChunk(route, true, ""); finishErr != nil {
+						err = finishErr
+						return
+					}
+					c.deleteTurn(msg.ChatID)
+					hasTurn = false
+				}
+				err = c.sendActivePush(chatID, chatType, fallbackWeComMediaText(part, "", filename))
+				return
+			}
+
+			if hasTurn {
+				err = c.sendTurnMedia(route, uploaded)
+				c.deleteTurn(msg.ChatID)
+				hasTurn = false
+			} else {
+				err = c.sendActiveMedia(chatID, chatType, uploaded)
+			}
+			if err != nil {
+				return
+			}
+			if caption := strings.TrimSpace(part.Caption); caption != "" {
+				err = c.sendActivePush(chatID, chatType, caption)
+			}
+		}()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (c *WeComChannel) connectLoop() {
+	backoff := time.Second
+	for {
+		select {
+		case <-c.ctx.Done():
+			return
+		default:
+		}
+
+		if err := c.runConnection(); err != nil {
+			logger.WarnCF("wecom", "WeCom connection lost", map[string]any{
+				"error":   err.Error(),
+				"backoff": backoff.String(),
+			})
+			select {
+			case <-time.After(backoff):
+			case <-c.ctx.Done():
+				return
+			}
+			if backoff < time.Minute {
+				backoff *= 2
+				if backoff > time.Minute {
+					backoff = time.Minute
+				}
+			}
+			continue
+		}
+		return
+	}
+}
+
+func (c *WeComChannel) runConnection() error {
+	dialCtx, cancel := context.WithTimeout(c.ctx, wecomConnectTimeout)
+	defer cancel()
+
+	conn, resp, err := websocket.DefaultDialer.DialContext(dialCtx, c.config.WebSocketURL, nil)
+	if resp != nil {
+		_ = resp.Body.Close()
+	}
+	if err != nil {
+		return fmt.Errorf("%w: %v", channels.ErrTemporary, err)
+	}
+
+	c.connMu.Lock()
+	c.conn = conn
+	c.connMu.Unlock()
+	defer func() {
+		c.connMu.Lock()
+		if c.conn == conn {
+			c.conn = nil
+		}
+		c.connMu.Unlock()
+		_ = conn.Close()
+		c.clearTurns()
+	}()
+
+	readErrCh := make(chan error, 1)
+	go func() {
+		readErrCh <- c.readLoop(conn)
+	}()
+
+	if writeErr := c.writeAndWait(conn, wecomCommand{
+		Cmd:     wecomCmdSubscribe,
+		Headers: wecomHeaders{ReqID: randomID(10)},
+		Body: map[string]string{
+			"bot_id": c.config.BotID,
+			"secret": c.config.Secret.String(),
+		},
+	}, wecomCommandTimeout); writeErr != nil {
+		return writeErr
+	}
+
+	heartbeatDone := make(chan struct{})
+	go func() {
+		defer close(heartbeatDone)
+		c.heartbeatLoop(conn)
+	}()
+
+	err = <-readErrCh
+	_ = conn.Close()
+	<-heartbeatDone
+	return err
+}
+
+func (c *WeComChannel) heartbeatLoop(conn *websocket.Conn) {
+	ticker := time.NewTicker(wecomHeartbeatInterval)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-ticker.C:
+			if err := c.writeAndWait(conn, wecomCommand{
+				Cmd:     wecomCmdPing,
+				Headers: wecomHeaders{ReqID: randomID(10)},
+			}, wecomCommandTimeout); err != nil {
+				logger.WarnCF("wecom", "Heartbeat failed", map[string]any{"error": err.Error()})
+				_ = conn.Close()
+				return
+			}
+		case <-c.ctx.Done():
+			return
+		}
+	}
+}
+
+func (c *WeComChannel) readLoop(conn *websocket.Conn) error {
+	for {
+		_, raw, err := conn.ReadMessage()
+		if err != nil {
+			select {
+			case <-c.ctx.Done():
+				return nil
+			default:
+				return fmt.Errorf("%w: %v", channels.ErrTemporary, err)
+			}
+		}
+
+		var env wecomEnvelope
+		if err := json.Unmarshal(raw, &env); err != nil {
+			logger.WarnCF("wecom", "Failed to parse WebSocket message", map[string]any{"error": err.Error()})
+			continue
+		}
+
+		if env.Cmd == "" && env.Headers.ReqID != "" {
+			c.pendingMu.Lock()
+			ch, ok := c.pending[env.Headers.ReqID]
+			if ok {
+				delete(c.pending, env.Headers.ReqID)
+			}
+			c.pendingMu.Unlock()
+			if ok {
+				ch <- env
+			}
+			continue
+		}
+
+		go c.handleEnvelope(env)
+	}
+}
+
+func (c *WeComChannel) handleEnvelope(env wecomEnvelope) {
+	switch env.Cmd {
+	case wecomCmdMsgCallback:
+		c.handleMessageCallback(env)
+	case wecomCmdEventCallback:
+		c.handleEventCallback(env)
+	default:
+		logger.DebugCF("wecom", "Ignoring unsupported WeCom command", map[string]any{"cmd": env.Cmd})
+	}
+}
+
+func (c *WeComChannel) handleEventCallback(env wecomEnvelope) {
+	var msg wecomIncomingMessage
+	if err := json.Unmarshal(env.Body, &msg); err != nil {
+		logger.WarnCF("wecom", "Failed to parse WeCom event callback", map[string]any{"error": err.Error()})
+	}
+}
+
+func (c *WeComChannel) handleMessageCallback(env wecomEnvelope) {
+	var msg wecomIncomingMessage
+	if err := json.Unmarshal(env.Body, &msg); err != nil {
+		logger.WarnCF("wecom", "Failed to parse WeCom message callback", map[string]any{"error": err.Error()})
+		return
+	}
+	if !c.recent.Mark(msg.MsgID) {
+		return
+	}
+
+	reqID := env.Headers.ReqID
+	if reqID == "" {
+		logger.WarnC("wecom", "WeCom message callback missing req_id")
+		return
+	}
+	if msg.Event != nil && msg.Event.EventType != "" {
+		return
+	}
+
+	if err := c.dispatchIncoming(reqID, msg); err != nil {
+		logger.WarnCF("wecom", "Failed to dispatch WeCom message", map[string]any{
+			"req_id": reqID,
+			"error":  err.Error(),
+		})
+		_ = c.respondImmediate(reqID, "The WeCom message could not be processed.")
+	}
+}
+
+func (c *WeComChannel) dispatchIncoming(reqID string, msg wecomIncomingMessage) error {
+	senderID := msg.From.UserID
+	if senderID == "" {
+		senderID = "unknown"
+	}
+	actualChatID := incomingChatID(msg)
+	chatType := incomingChatTypeCode(msg.ChatType)
+	peerKind := "direct"
+	if msg.ChatType == "group" {
+		peerKind = "group"
+	}
+
+	sender := bus.SenderInfo{
+		Platform:    "wecom",
+		PlatformID:  senderID,
+		CanonicalID: identity.BuildCanonicalID("wecom", senderID),
+		DisplayName: senderID,
+	}
+
+	var (
+		content   string
+		quoteText string
+		mediaRefs []string
+		err       error
+	)
+	scope := channels.BuildMediaScope("wecom", actualChatID, msg.MsgID)
+	switch msg.MsgType {
+	case "text":
+		if msg.Text != nil {
+			content = strings.TrimSpace(msg.Text.Content)
+		}
+	case "voice":
+		if msg.Voice != nil {
+			content = strings.TrimSpace(msg.Voice.Content)
+		}
+	case "image":
+		content = "[image]"
+		mediaRefs, err = c.collectSingleMedia(c.ctx, scope, msg.MsgID, &mediaPayload{
+			url:    msg.Image.URL,
+			aesKey: msg.Image.AESKey,
+		}, "image", ".jpg")
+	case "file":
+		content = "[file]"
+		mediaRefs, err = c.collectSingleMedia(c.ctx, scope, msg.MsgID, &mediaPayload{
+			url:    msg.File.URL,
+			aesKey: msg.File.AESKey,
+		}, "file", ".bin")
+	case "video":
+		content = "[video]"
+		mediaRefs, err = c.collectSingleMedia(c.ctx, scope, msg.MsgID, &mediaPayload{
+			url:    msg.Video.URL,
+			aesKey: msg.Video.AESKey,
+		}, "video", ".mp4")
+	case "mixed":
+		content, mediaRefs, err = c.collectMixedMedia(c.ctx, scope, msg)
+	default:
+		return c.respondImmediate(reqID, "Unsupported WeCom message type: "+msg.MsgType)
+	}
+	if err != nil {
+		return err
+	}
+	if msg.Quote != nil && msg.Quote.Text != nil {
+		quoteText = strings.TrimSpace(msg.Quote.Text.Content)
+		if content == "" {
+			content = quoteText
+		}
+	}
+	if content == "" && len(mediaRefs) == 0 {
+		return c.respondImmediate(reqID, "The WeCom message did not contain usable content.")
+	}
+
+	turn := wecomTurn{
+		ReqID:     reqID,
+		ChatID:    actualChatID,
+		ChatType:  chatType,
+		StreamID:  randomID(10),
+		CreatedAt: time.Now(),
+	}
+	c.queueTurn(actualChatID, turn)
+	if err := c.routes.Put(actualChatID, reqID, chatType, wecomRouteTTL); err != nil {
+		logger.WarnCF("wecom", "Failed to persist req_id route", map[string]any{
+			"chat_id": actualChatID,
+			"req_id":  reqID,
+			"error":   err.Error(),
+		})
+	}
+
+	opening := ""
+	if c.config.SendThinkingMessage {
+		opening = "Processing..."
+	}
+	if err := c.sendStreamChunk(turn, false, opening); err != nil {
+		return err
+	}
+
+	peer := bus.Peer{Kind: peerKind, ID: actualChatID}
+	metadata := map[string]string{
+		"channel":   "wecom",
+		"req_id":    reqID,
+		"chat_id":   actualChatID,
+		"chat_type": msg.ChatType,
+		"msg_id":    msg.MsgID,
+		"msg_type":  msg.MsgType,
+	}
+	if quoteText != "" {
+		metadata["quote_text"] = quoteText
+	}
+
+	c.HandleMessage(c.ctx, peer, msg.MsgID, senderID, actualChatID, content, mediaRefs, metadata, sender)
+	return nil
+}
+
+func (c *WeComChannel) collectSingleMedia(
+	ctx context.Context,
+	scope, msgID string,
+	payload interface {
+		GetURL() string
+		GetAESKey() string
+	},
+	label, fallbackExt string,
+) ([]string, error) {
+	if payload == nil || payload.GetURL() == "" {
+		return nil, fmt.Errorf("%s payload is empty", label)
+	}
+	ref, err := c.storeRemoteMedia(ctx, scope, msgID, payload.GetURL(), payload.GetAESKey(), fallbackExt)
+	if err != nil {
+		return nil, err
+	}
+	return []string{ref}, nil
+}
+
+type mediaPayload struct {
+	url    string
+	aesKey string
+}
+
+func (p *mediaPayload) GetURL() string    { return p.url }
+func (p *mediaPayload) GetAESKey() string { return p.aesKey }
+
+func (c *WeComChannel) collectMixedMedia(
+	ctx context.Context,
+	scope string,
+	msg wecomIncomingMessage,
+) (string, []string, error) {
+	if msg.Mixed == nil {
+		return "", nil, fmt.Errorf("mixed message is empty")
+	}
+
+	var textParts []string
+	var refs []string
+	for idx, item := range msg.Mixed.MsgItem {
+		switch item.MsgType {
+		case "text":
+			if item.Text != nil && strings.TrimSpace(item.Text.Content) != "" {
+				textParts = append(textParts, strings.TrimSpace(item.Text.Content))
+			}
+		case "image":
+			if item.Image != nil && item.Image.URL != "" {
+				ref, err := c.storeRemoteMedia(
+					ctx,
+					scope,
+					fmt.Sprintf("%s-%d", msg.MsgID, idx),
+					item.Image.URL,
+					item.Image.AESKey,
+					".jpg",
+				)
+				if err != nil {
+					return "", nil, err
+				}
+				refs = append(refs, ref)
+			}
+		case "file":
+			if item.File != nil && item.File.URL != "" {
+				ref, err := c.storeRemoteMedia(
+					ctx,
+					scope,
+					fmt.Sprintf("%s-%d", msg.MsgID, idx),
+					item.File.URL,
+					item.File.AESKey,
+					".bin",
+				)
+				if err != nil {
+					return "", nil, err
+				}
+				refs = append(refs, ref)
+			}
+		}
+	}
+
+	content := strings.Join(textParts, "\n")
+	if content == "" && len(refs) > 0 {
+		content = "[media]"
+	}
+	return content, refs, nil
+}
+
+func (c *WeComChannel) respondImmediate(reqID, content string) error {
+	turn := wecomTurn{
+		ReqID:     reqID,
+		StreamID:  randomID(10),
+		CreatedAt: time.Now(),
+	}
+	return c.sendStreamChunk(turn, true, content)
+}
+
+func (c *WeComChannel) sendStreamReply(turn wecomTurn, content string) error {
+	return c.sendStreamChunk(turn, true, content)
+}
+
+func (c *WeComChannel) sendStreamChunk(turn wecomTurn, finish bool, content string) error {
+	return c.sendCommand(wecomCommand{
+		Cmd:     wecomCmdRespondMsg,
+		Headers: wecomHeaders{ReqID: turn.ReqID},
+		Body: wecomRespondMsgBody{
+			MsgType: "stream",
+			Stream: &wecomStreamContent{
+				ID:      turn.StreamID,
+				Finish:  finish,
+				Content: content,
+			},
+		},
+	}, wecomCommandTimeout)
+}
+
+func (c *WeComChannel) sendTurnMedia(turn wecomTurn, uploaded *wecomOutboundMedia) error {
+	if uploaded == nil {
+		return fmt.Errorf("wecom outbound media is nil: %w", channels.ErrSendFailed)
+	}
+	if err := c.sendCommand(wecomCommand{
+		Cmd:     wecomCmdRespondMsg,
+		Headers: wecomHeaders{ReqID: turn.ReqID},
+		Body:    uploaded.respondBody(),
+	}, wecomCommandTimeout); err != nil {
+		return err
+	}
+	return c.sendStreamChunk(turn, true, "")
+}
+
+func (c *WeComChannel) sendActivePush(chatID string, chatType uint32, content string) error {
+	if strings.TrimSpace(chatID) == "" {
+		return fmt.Errorf("empty chat ID: %w", channels.ErrSendFailed)
+	}
+	return c.sendCommand(wecomCommand{
+		Cmd:     wecomCmdSendMsg,
+		Headers: wecomHeaders{ReqID: randomID(10)},
+		Body: wecomSendMsgBody{
+			ChatID:   chatID,
+			ChatType: chatType,
+			MsgType:  "markdown",
+			Markdown: &wecomMarkdownContent{Content: content},
+		},
+	}, wecomCommandTimeout)
+}
+
+func (c *WeComChannel) sendActiveMedia(chatID string, chatType uint32, uploaded *wecomOutboundMedia) error {
+	if strings.TrimSpace(chatID) == "" {
+		return fmt.Errorf("empty chat ID: %w", channels.ErrSendFailed)
+	}
+	if uploaded == nil {
+		return fmt.Errorf("wecom outbound media is nil: %w", channels.ErrSendFailed)
+	}
+	return c.sendCommand(wecomCommand{
+		Cmd:     wecomCmdSendMsg,
+		Headers: wecomHeaders{ReqID: randomID(10)},
+		Body:    uploaded.sendBody(chatID, chatType),
+	}, wecomCommandTimeout)
+}
+
+func (c *WeComChannel) sendCommand(cmd wecomCommand, timeout time.Duration) error {
+	_, err := c.sendCommandAck(cmd, timeout)
+	return err
+}
+
+func (c *WeComChannel) sendCommandAck(cmd wecomCommand, timeout time.Duration) (wecomEnvelope, error) {
+	if c.commandSend != nil {
+		return c.commandSend(cmd, timeout)
+	}
+	return c.writeCurrentAck(cmd, timeout)
+}
+
+func (c *WeComChannel) writeCurrentAck(cmd wecomCommand, timeout time.Duration) (wecomEnvelope, error) {
+	c.connMu.Lock()
+	conn := c.conn
+	c.connMu.Unlock()
+	if conn == nil {
+		return wecomEnvelope{}, fmt.Errorf("wecom websocket not connected: %w", channels.ErrTemporary)
+	}
+	return c.writeAndWaitAck(conn, cmd, timeout)
+}
+
+func (c *WeComChannel) writeAndWait(conn *websocket.Conn, cmd wecomCommand, timeout time.Duration) error {
+	_, err := c.writeAndWaitAck(conn, cmd, timeout)
+	return err
+}
+
+func (c *WeComChannel) writeAndWaitAck(
+	conn *websocket.Conn,
+	cmd wecomCommand,
+	timeout time.Duration,
+) (wecomEnvelope, error) {
+	if cmd.Headers.ReqID == "" {
+		cmd.Headers.ReqID = randomID(10)
+	}
+	waitCh := make(chan wecomEnvelope, 1)
+	c.pendingMu.Lock()
+	c.pending[cmd.Headers.ReqID] = waitCh
+	c.pendingMu.Unlock()
+	defer func() {
+		c.pendingMu.Lock()
+		delete(c.pending, cmd.Headers.ReqID)
+		c.pendingMu.Unlock()
+	}()
+
+	data, err := json.Marshal(cmd)
+	if err != nil {
+		return wecomEnvelope{}, fmt.Errorf("%w: %v", channels.ErrSendFailed, err)
+	}
+	c.connMu.Lock()
+	err = conn.WriteMessage(websocket.TextMessage, data)
+	c.connMu.Unlock()
+	if err != nil {
+		return wecomEnvelope{}, fmt.Errorf("%w: %v", channels.ErrTemporary, err)
+	}
+
+	timer := time.NewTimer(timeout)
+	defer timer.Stop()
+	select {
+	case env := <-waitCh:
+		if env.ErrCode != 0 {
+			return wecomEnvelope{}, fmt.Errorf(
+				"%w: wecom errcode=%d errmsg=%s",
+				channels.ErrTemporary,
+				env.ErrCode,
+				env.ErrMsg,
+			)
+		}
+		return env, nil
+	case <-timer.C:
+		return wecomEnvelope{}, fmt.Errorf("%w: timeout waiting for WeCom ack", channels.ErrTemporary)
+	case <-c.ctx.Done():
+		return wecomEnvelope{}, c.ctx.Err()
+	}
+}
+
+func (c *WeComChannel) getTurn(chatID string) (wecomTurn, bool) {
+	c.turnsMu.Lock()
+	defer c.turnsMu.Unlock()
+	queue := c.turns[chatID]
+	if len(queue) == 0 {
+		return wecomTurn{}, false
+	}
+	return queue[0], true
+}
+
+func (c *WeComChannel) deleteTurn(chatID string) {
+	c.turnsMu.Lock()
+	defer c.turnsMu.Unlock()
+	queue := c.turns[chatID]
+	if len(queue) <= 1 {
+		delete(c.turns, chatID)
+		return
+	}
+	c.turns[chatID] = queue[1:]
+}
+
+func (c *WeComChannel) queueTurn(chatID string, turn wecomTurn) {
+	c.turnsMu.Lock()
+	defer c.turnsMu.Unlock()
+	c.turns[chatID] = append(c.turns[chatID], turn)
+}
+
+func (c *WeComChannel) consumeTurn(chatID string, turn wecomTurn) bool {
+	c.turnsMu.Lock()
+	defer c.turnsMu.Unlock()
+
+	queue := c.turns[chatID]
+	if len(queue) == 0 {
+		return false
+	}
+	current := queue[0]
+	if current.ReqID != turn.ReqID || current.StreamID != turn.StreamID {
+		return false
+	}
+	if len(queue) == 1 {
+		delete(c.turns, chatID)
+		return true
+	}
+	c.turns[chatID] = queue[1:]
+	return true
+}
+
+func (c *WeComChannel) clearTurns() {
+	c.turnsMu.Lock()
+	c.turns = make(map[string][]wecomTurn)
+	c.turnsMu.Unlock()
+}
+
+func randomID(n int) string {
+	const alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	if n <= 0 {
+		n = 10
+	}
+	buf := make([]byte, n)
+	for i := range buf {
+		v, _ := rand.Int(rand.Reader, big.NewInt(int64(len(alphabet))))
+		buf[i] = alphabet[v.Int64()]
+	}
+	return string(buf)
+}
+
+func (s *wecomStreamer) Update(ctx context.Context, content string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if s.closed {
+		return nil
+	}
+	if err := s.validateActiveTurn(); err != nil {
+		return err
+	}
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+
+	if !s.lastSentAt.IsZero() {
+		wait := time.Until(s.lastSentAt.Add(wecomStreamMinInterval))
+		if wait > 0 {
+			timer := time.NewTimer(wait)
+			defer timer.Stop()
+			select {
+			case <-ctx.Done():
+				return ctx.Err()
+			case <-timer.C:
+			}
+		}
+	}
+
+	if err := s.channel.sendStreamChunk(s.turn, false, content); err != nil {
+		return err
+	}
+	s.content = content
+	s.lastSentAt = time.Now()
+	return nil
+}
+
+func (s *wecomStreamer) Finalize(ctx context.Context, content string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if s.closed {
+		return nil
+	}
+	if err := s.validateActiveTurn(); err != nil {
+		return err
+	}
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+	if err := s.channel.sendStreamChunk(s.turn, true, content); err != nil {
+		return err
+	}
+
+	s.content = content
+	s.closed = true
+	s.channel.consumeTurn(s.chatID, s.turn)
+	return nil
+}
+
+func (s *wecomStreamer) Cancel(_ context.Context) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if s.closed {
+		return
+	}
+	if s.validateActiveTurn() == nil {
+		_ = s.channel.sendStreamChunk(s.turn, true, s.content)
+		s.channel.consumeTurn(s.chatID, s.turn)
+	}
+	s.closed = true
+}
+
+func (s *wecomStreamer) validateActiveTurn() error {
+	if time.Since(s.turn.CreatedAt) > wecomStreamMaxDuration {
+		s.channel.consumeTurn(s.chatID, s.turn)
+		return fmt.Errorf("wecom streaming unavailable: turn expired")
+	}
+	current, ok := s.channel.getTurn(s.chatID)
+	if !ok || current.ReqID != s.turn.ReqID || current.StreamID != s.turn.StreamID {
+		return fmt.Errorf("wecom streaming unavailable: turn no longer active")
+	}
+	return nil
+}
--- a/pkg/channels/wecom/wecom_test.go
+++ b/pkg/channels/wecom/wecom_test.go
@ -0,0 +1,660 @@
+package wecom
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/sipeed/picoclaw/pkg/bus"
+	"github.com/sipeed/picoclaw/pkg/config"
+	"github.com/sipeed/picoclaw/pkg/media"
+)
+
+func TestDispatchIncoming_UsesActualChatIDAndStoresReqIDRoute(t *testing.T) {
+	t.Parallel()
+
+	messageBus := bus.NewMessageBus()
+	ch := newTestWeComChannel(t, messageBus)
+
+	var commands []wecomCommand
+	ch.commandSend = func(cmd wecomCommand, _ time.Duration) (wecomEnvelope, error) {
+		commands = append(commands, cmd)
+		return wecomTestAck(nil), nil
+	}
+
+	msg := wecomIncomingMessage{
+		MsgID:    "msg-1",
+		ChatID:   "chat-1",
+		ChatType: "direct",
+		MsgType:  "text",
+		Text: &struct {
+			Content string `json:"content"`
+		}{Content: "hello"},
+	}
+	msg.From.UserID = "user-1"
+
+	if err := ch.dispatchIncoming("req-1", msg); err != nil {
+		t.Fatalf("dispatchIncoming() error = %v", err)
+	}
+
+	select {
+	case inbound := <-messageBus.InboundChan():
+		if inbound.ChatID != "chat-1" {
+			t.Fatalf("inbound ChatID = %q, want chat-1", inbound.ChatID)
+		}
+		if inbound.MessageID != "msg-1" {
+			t.Fatalf("inbound MessageID = %q, want msg-1", inbound.MessageID)
+		}
+		if inbound.Peer.ID != "chat-1" {
+			t.Fatalf("inbound Peer.ID = %q, want chat-1", inbound.Peer.ID)
+		}
+		if inbound.Metadata["req_id"] != "req-1" {
+			t.Fatalf("inbound req_id = %q, want req-1", inbound.Metadata["req_id"])
+		}
+	default:
+		t.Fatal("expected inbound message to be published")
+	}
+
+	turn, ok := ch.getTurn("chat-1")
+	if !ok {
+		t.Fatal("expected queued turn for chat-1")
+	}
+	if turn.ReqID != "req-1" {
+		t.Fatalf("turn.ReqID = %q, want req-1", turn.ReqID)
+	}
+
+	route, ok := ch.routes.Get("chat-1")
+	if !ok {
+		t.Fatal("expected persisted route for chat-1")
+	}
+	if route.ReqID != "req-1" || route.ChatType != 1 {
+		t.Fatalf("route = %+v", route)
+	}
+
+	if len(commands) != 1 {
+		t.Fatalf("expected 1 opening command, got %d", len(commands))
+	}
+	if commands[0].Cmd != wecomCmdRespondMsg {
+		t.Fatalf("opening command = %q, want %q", commands[0].Cmd, wecomCmdRespondMsg)
+	}
+	if commands[0].Headers.ReqID != "req-1" {
+		t.Fatalf("opening req_id = %q, want req-1", commands[0].Headers.ReqID)
+	}
+}
+
+func TestNewChannel_DoesNotRegisterMessageSplitLimit(t *testing.T) {
+	t.Parallel()
+
+	ch := newTestWeComChannel(t, bus.NewMessageBus())
+	if got := ch.MaxMessageLength(); got != 0 {
+		t.Fatalf("MaxMessageLength() = %d, want 0", got)
+	}
+}
+
+func TestBeginStream_UpdateAndFinalize(t *testing.T) {
+	t.Parallel()
+
+	ch := newTestWeComChannel(t, bus.NewMessageBus())
+	ch.SetRunning(true)
+	ch.queueTurn("chat-1", wecomTurn{
+		ReqID:     "req-1",
+		ChatID:    "chat-1",
+		ChatType:  1,
+		StreamID:  "stream-1",
+		CreatedAt: time.Now(),
+	})
+
+	var commands []wecomCommand
+	ch.commandSend = func(cmd wecomCommand, _ time.Duration) (wecomEnvelope, error) {
+		commands = append(commands, cmd)
+		return wecomTestAck(nil), nil
+	}
+
+	streamer, err := ch.BeginStream(context.Background(), "chat-1")
+	if err != nil {
+		t.Fatalf("BeginStream() error = %v", err)
+	}
+	if err := streamer.Update(context.Background(), "draft"); err != nil {
+		t.Fatalf("Update() error = %v", err)
+	}
+	if err := streamer.Finalize(context.Background(), "final"); err != nil {
+		t.Fatalf("Finalize() error = %v", err)
+	}
+
+	if len(commands) != 2 {
+		t.Fatalf("expected 2 commands, got %d", len(commands))
+	}
+	for i, wantFinish := range []bool{false, true} {
+		if commands[i].Cmd != wecomCmdRespondMsg {
+			t.Fatalf("command[%d].Cmd = %q, want %q", i, commands[i].Cmd, wecomCmdRespondMsg)
+		}
+		body, ok := commands[i].Body.(wecomRespondMsgBody)
+		if !ok {
+			t.Fatalf("command[%d] body type = %T", i, commands[i].Body)
+		}
+		if body.Stream == nil {
+			t.Fatalf("command[%d] missing stream body", i)
+		}
+		if body.Stream.ID != "stream-1" {
+			t.Fatalf("command[%d] stream id = %q, want stream-1", i, body.Stream.ID)
+		}
+		if body.Stream.Finish != wantFinish {
+			t.Fatalf("command[%d] finish = %v, want %v", i, body.Stream.Finish, wantFinish)
+		}
+	}
+	if body := commands[0].Body.(wecomRespondMsgBody); body.Stream.Content != "draft" {
+		t.Fatalf("update content = %q, want draft", body.Stream.Content)
+	}
+	if body := commands[1].Body.(wecomRespondMsgBody); body.Stream.Content != "final" {
+		t.Fatalf("final content = %q, want final", body.Stream.Content)
+	}
+	if _, ok := ch.getTurn("chat-1"); ok {
+		t.Fatal("expected turn to be consumed after Finalize")
+	}
+}
+
+func TestSend_StreamFailureFallsBackToActualChatID(t *testing.T) {
+	t.Parallel()
+
+	ch := newTestWeComChannel(t, bus.NewMessageBus())
+	ch.SetRunning(true)
+	ch.queueTurn("chat-1", wecomTurn{
+		ReqID:     "req-1",
+		ChatID:    "chat-1",
+		ChatType:  1,
+		StreamID:  "stream-1",
+		CreatedAt: time.Now(),
+	})
+	ch.queueTurn("chat-1", wecomTurn{
+		ReqID:     "req-2",
+		ChatID:    "chat-1",
+		ChatType:  1,
+		StreamID:  "stream-2",
+		CreatedAt: time.Now(),
+	})
+	if err := ch.routes.Put("chat-1", "req-2", 1, time.Hour); err != nil {
+		t.Fatalf("Put() error = %v", err)
+	}
+
+	var commands []wecomCommand
+	ch.commandSend = func(cmd wecomCommand, _ time.Duration) (wecomEnvelope, error) {
+		commands = append(commands, cmd)
+		if len(commands) == 1 && cmd.Cmd == wecomCmdRespondMsg {
+			return wecomEnvelope{}, errors.New("stream send failed")
+		}
+		return wecomTestAck(nil), nil
+	}
+
+	if err := ch.Send(context.Background(), bus.OutboundMessage{
+		Channel: "wecom",
+		ChatID:  "chat-1",
+		Content: "hello",
+	}); err != nil {
+		t.Fatalf("Send() error = %v", err)
+	}
+
+	if len(commands) != 2 {
+		t.Fatalf("expected 2 commands, got %d", len(commands))
+	}
+	if commands[0].Cmd != wecomCmdRespondMsg || commands[0].Headers.ReqID != "req-1" {
+		t.Fatalf("first command = %+v", commands[0])
+	}
+	if commands[1].Cmd != wecomCmdSendMsg {
+		t.Fatalf("second command = %q, want %q", commands[1].Cmd, wecomCmdSendMsg)
+	}
+	body, ok := commands[1].Body.(wecomSendMsgBody)
+	if !ok {
+		t.Fatalf("unexpected send body type %T", commands[1].Body)
+	}
+	if body.ChatID != "chat-1" {
+		t.Fatalf("send chatid = %q, want chat-1", body.ChatID)
+	}
+	if body.ChatType != 1 {
+		t.Fatalf("send chat_type = %d, want 1", body.ChatType)
+	}
+
+	nextTurn, ok := ch.getTurn("chat-1")
+	if !ok {
+		t.Fatal("expected second turn to remain queued")
+	}
+	if nextTurn.ReqID != "req-2" {
+		t.Fatalf("next queued req_id = %q, want req-2", nextTurn.ReqID)
+	}
+}
+
+func TestSend_DoesNotSplitStreamReply(t *testing.T) {
+	t.Parallel()
+
+	ch := newTestWeComChannel(t, bus.NewMessageBus())
+	ch.SetRunning(true)
+	ch.queueTurn("chat-1", wecomTurn{
+		ReqID:     "req-1",
+		ChatID:    "chat-1",
+		ChatType:  1,
+		StreamID:  "stream-1",
+		CreatedAt: time.Now(),
+	})
+
+	var commands []wecomCommand
+	ch.commandSend = func(cmd wecomCommand, _ time.Duration) (wecomEnvelope, error) {
+		commands = append(commands, cmd)
+		return wecomTestAck(nil), nil
+	}
+
+	content := strings.Repeat("\u4e2d", 30000)
+	if err := ch.Send(context.Background(), bus.OutboundMessage{
+		Channel: "wecom",
+		ChatID:  "chat-1",
+		Content: content,
+	}); err != nil {
+		t.Fatalf("Send() error = %v", err)
+	}
+
+	if len(commands) != 1 {
+		t.Fatalf("expected 1 stream command, got %d", len(commands))
+	}
+	body, ok := commands[0].Body.(wecomRespondMsgBody)
+	if !ok {
+		t.Fatalf("unexpected body type %T", commands[0].Body)
+	}
+	if body.Stream == nil || !body.Stream.Finish {
+		t.Fatalf("stream body = %+v", body.Stream)
+	}
+	if body.Stream.Content != content {
+		t.Fatalf("stream content length = %d, want %d", len(body.Stream.Content), len(content))
+	}
+}
+
+func TestSend_DoesNotSplitActivePush(t *testing.T) {
+	t.Parallel()
+
+	ch := newTestWeComChannel(t, bus.NewMessageBus())
+	ch.SetRunning(true)
+
+	var commands []wecomCommand
+	ch.commandSend = func(cmd wecomCommand, _ time.Duration) (wecomEnvelope, error) {
+		commands = append(commands, cmd)
+		return wecomTestAck(nil), nil
+	}
+
+	content := strings.Repeat("a", 30000)
+	if err := ch.Send(context.Background(), bus.OutboundMessage{
+		Channel: "wecom",
+		ChatID:  "chat-1",
+		Content: content,
+	}); err != nil {
+		t.Fatalf("Send() error = %v", err)
+	}
+
+	if len(commands) != 1 {
+		t.Fatalf("expected 1 send command, got %d", len(commands))
+	}
+	if commands[0].Cmd != wecomCmdSendMsg {
+		t.Fatalf("command = %q, want %q", commands[0].Cmd, wecomCmdSendMsg)
+	}
+	body, ok := commands[0].Body.(wecomSendMsgBody)
+	if !ok {
+		t.Fatalf("unexpected body type %T", commands[0].Body)
+	}
+	if body.Markdown == nil || body.Markdown.Content != content {
+		t.Fatalf("markdown content length = %d, want %d", len(body.Markdown.Content), len(content))
+	}
+}
+
+func TestSendMedia_SendsActiveImage(t *testing.T) {
+	t.Parallel()
+
+	ch := newTestWeComChannel(t, bus.NewMessageBus())
+	ch.SetRunning(true)
+
+	store := media.NewFileMediaStore()
+	ch.SetMediaStore(store)
+
+	imageData := wecomTestJPEGData(t)
+	imagePath := filepath.Join(t.TempDir(), "photo.jpg")
+	if err := os.WriteFile(imagePath, imageData, 0o600); err != nil {
+		t.Fatalf("WriteFile() error = %v", err)
+	}
+	ref, err := store.Store(imagePath, media.MediaMeta{
+		Filename:      "photo.jpg",
+		ContentType:   "image/jpeg",
+		Source:        "test",
+		CleanupPolicy: media.CleanupPolicyForgetOnly,
+	}, "scope-1")
+	if err != nil {
+		t.Fatalf("Store() error = %v", err)
+	}
+
+	var commands []wecomCommand
+	ch.commandSend = func(cmd wecomCommand, _ time.Duration) (wecomEnvelope, error) {
+		commands = append(commands, cmd)
+		switch cmd.Cmd {
+		case wecomCmdUploadMediaInit:
+			return wecomTestAck(wecomUploadMediaInitResponse{UploadID: "upload-1"}), nil
+		case wecomCmdUploadMediaEnd:
+			return wecomTestAck(wecomUploadMediaFinishResponse{
+				Type:    "image",
+				MediaID: "media-1",
+			}), nil
+		default:
+			return wecomTestAck(nil), nil
+		}
+	}
+
+	err = ch.SendMedia(context.Background(), bus.OutboundMediaMessage{
+		Channel: "wecom",
+		ChatID:  "chat-1",
+		Parts: []bus.MediaPart{{
+			Ref:         ref,
+			Type:        "image",
+			Filename:    "photo.jpg",
+			ContentType: "image/jpeg",
+		}},
+	})
+	if err != nil {
+		t.Fatalf("SendMedia() error = %v", err)
+	}
+
+	if len(commands) != 4 {
+		t.Fatalf("expected 4 commands, got %d", len(commands))
+	}
+	if commands[0].Cmd != wecomCmdUploadMediaInit {
+		t.Fatalf("first command = %q, want %q", commands[0].Cmd, wecomCmdUploadMediaInit)
+	}
+	initBody, ok := commands[0].Body.(wecomUploadMediaInitBody)
+	if !ok {
+		t.Fatalf("unexpected init body type %T", commands[0].Body)
+	}
+	if initBody.Type != "image" || initBody.Filename != "photo.jpg" || initBody.TotalChunks != 1 {
+		t.Fatalf("init body = %+v", initBody)
+	}
+	if commands[1].Cmd != wecomCmdUploadMediaChunk {
+		t.Fatalf("second command = %q, want %q", commands[1].Cmd, wecomCmdUploadMediaChunk)
+	}
+	chunkBody, ok := commands[1].Body.(wecomUploadMediaChunkBody)
+	if !ok {
+		t.Fatalf("unexpected chunk body type %T", commands[1].Body)
+	}
+	if chunkBody.UploadID != "upload-1" || chunkBody.ChunkIndex != 0 || chunkBody.Base64Data == "" {
+		t.Fatalf("chunk body = %+v", chunkBody)
+	}
+	if commands[2].Cmd != wecomCmdUploadMediaEnd {
+		t.Fatalf("third command = %q, want %q", commands[2].Cmd, wecomCmdUploadMediaEnd)
+	}
+	if commands[3].Cmd != wecomCmdSendMsg {
+		t.Fatalf("fourth command = %q, want %q", commands[3].Cmd, wecomCmdSendMsg)
+	}
+
+	body, ok := commands[3].Body.(wecomSendMsgBody)
+	if !ok {
+		t.Fatalf("unexpected send body type %T", commands[3].Body)
+	}
+	if body.MsgType != "image" || body.Image == nil {
+		t.Fatalf("send body = %+v", body)
+	}
+	if body.ChatID != "chat-1" {
+		t.Fatalf("send chatid = %q, want chat-1", body.ChatID)
+	}
+	if body.Image.MediaID != "media-1" {
+		t.Fatalf("image media_id = %q, want media-1", body.Image.MediaID)
+	}
+}
+
+func TestSendMedia_UsesTurnImageAndFinishesStream(t *testing.T) {
+	t.Parallel()
+
+	ch := newTestWeComChannel(t, bus.NewMessageBus())
+	ch.SetRunning(true)
+
+	store := media.NewFileMediaStore()
+	ch.SetMediaStore(store)
+
+	imageData := wecomTestJPEGData(t)
+	imagePath := filepath.Join(t.TempDir(), "reply.jpg")
+	if err := os.WriteFile(imagePath, imageData, 0o600); err != nil {
+		t.Fatalf("WriteFile() error = %v", err)
+	}
+	ref, err := store.Store(imagePath, media.MediaMeta{
+		Filename:      "reply.jpg",
+		ContentType:   "image/jpeg",
+		Source:        "test",
+		CleanupPolicy: media.CleanupPolicyForgetOnly,
+	}, "scope-2")
+	if err != nil {
+		t.Fatalf("Store() error = %v", err)
+	}
+
+	ch.queueTurn("chat-1", wecomTurn{
+		ReqID:     "req-1",
+		ChatID:    "chat-1",
+		ChatType:  1,
+		StreamID:  "stream-1",
+		CreatedAt: time.Now(),
+	})
+	putErr := ch.routes.Put("chat-1", "req-1", 1, time.Hour)
+	if putErr != nil {
+		t.Fatalf("Put() error = %v", putErr)
+	}
+
+	var commands []wecomCommand
+	ch.commandSend = func(cmd wecomCommand, _ time.Duration) (wecomEnvelope, error) {
+		commands = append(commands, cmd)
+		switch cmd.Cmd {
+		case wecomCmdUploadMediaInit:
+			return wecomTestAck(wecomUploadMediaInitResponse{UploadID: "upload-2"}), nil
+		case wecomCmdUploadMediaEnd:
+			return wecomTestAck(wecomUploadMediaFinishResponse{
+				Type:    "image",
+				MediaID: "media-2",
+			}), nil
+		default:
+			return wecomTestAck(nil), nil
+		}
+	}
+
+	err = ch.SendMedia(context.Background(), bus.OutboundMediaMessage{
+		Channel: "wecom",
+		ChatID:  "chat-1",
+		Parts: []bus.MediaPart{{
+			Ref:         ref,
+			Type:        "image",
+			Filename:    "reply.jpg",
+			ContentType: "image/jpeg",
+		}},
+	})
+	if err != nil {
+		t.Fatalf("SendMedia() error = %v", err)
+	}
+
+	if len(commands) != 5 {
+		t.Fatalf("expected 5 commands, got %d", len(commands))
+	}
+	if commands[0].Cmd != wecomCmdUploadMediaInit {
+		t.Fatalf("first command = %+v", commands[0])
+	}
+	if commands[1].Cmd != wecomCmdUploadMediaChunk {
+		t.Fatalf("second command = %+v", commands[1])
+	}
+	if commands[2].Cmd != wecomCmdUploadMediaEnd {
+		t.Fatalf("third command = %+v", commands[2])
+	}
+	if commands[3].Cmd != wecomCmdRespondMsg || commands[3].Headers.ReqID != "req-1" {
+		t.Fatalf("fourth command = %+v", commands[3])
+	}
+	if commands[4].Cmd != wecomCmdRespondMsg || commands[4].Headers.ReqID != "req-1" {
+		t.Fatalf("fifth command = %+v", commands[4])
+	}
+
+	imageBody, ok := commands[3].Body.(wecomRespondMsgBody)
+	if !ok {
+		t.Fatalf("unexpected image body type %T", commands[3].Body)
+	}
+	if imageBody.MsgType != "image" || imageBody.Image == nil {
+		t.Fatalf("image body = %+v", imageBody)
+	}
+	if imageBody.Image.MediaID != "media-2" {
+		t.Fatalf("image media_id = %q, want media-2", imageBody.Image.MediaID)
+	}
+
+	streamBody, ok := commands[4].Body.(wecomRespondMsgBody)
+	if !ok {
+		t.Fatalf("unexpected finish body type %T", commands[4].Body)
+	}
+	if streamBody.MsgType != "stream" || streamBody.Stream == nil || !streamBody.Stream.Finish {
+		t.Fatalf("finish body = %+v", streamBody)
+	}
+
+	if _, ok := ch.getTurn("chat-1"); ok {
+		t.Fatal("expected turn to be removed after media send")
+	}
+}
+
+func TestSendMedia_SendsActiveFile(t *testing.T) {
+	t.Parallel()
+
+	ch := newTestWeComChannel(t, bus.NewMessageBus())
+	ch.SetRunning(true)
+
+	store := media.NewFileMediaStore()
+	ch.SetMediaStore(store)
+
+	filePath := filepath.Join(t.TempDir(), "report.pdf")
+	if err := os.WriteFile(filePath, []byte("%PDF-1.4"), 0o600); err != nil {
+		t.Fatalf("WriteFile() error = %v", err)
+	}
+	ref, err := store.Store(filePath, media.MediaMeta{
+		Filename:      "report.pdf",
+		ContentType:   "application/pdf",
+		Source:        "test",
+		CleanupPolicy: media.CleanupPolicyForgetOnly,
+	}, "scope-3")
+	if err != nil {
+		t.Fatalf("Store() error = %v", err)
+	}
+
+	var commands []wecomCommand
+	ch.commandSend = func(cmd wecomCommand, _ time.Duration) (wecomEnvelope, error) {
+		commands = append(commands, cmd)
+		switch cmd.Cmd {
+		case wecomCmdUploadMediaInit:
+			return wecomTestAck(wecomUploadMediaInitResponse{UploadID: "upload-3"}), nil
+		case wecomCmdUploadMediaEnd:
+			return wecomTestAck(wecomUploadMediaFinishResponse{
+				Type:    "file",
+				MediaID: "media-3",
+			}), nil
+		default:
+			return wecomTestAck(nil), nil
+		}
+	}
+
+	err = ch.SendMedia(context.Background(), bus.OutboundMediaMessage{
+		Channel: "wecom",
+		ChatID:  "chat-2",
+		Parts: []bus.MediaPart{{
+			Ref:         ref,
+			Type:        "file",
+			Filename:    "report.pdf",
+			ContentType: "application/pdf",
+		}},
+	})
+	if err != nil {
+		t.Fatalf("SendMedia() error = %v", err)
+	}
+
+	if len(commands) != 4 {
+		t.Fatalf("expected 4 commands, got %d", len(commands))
+	}
+	if commands[0].Cmd != wecomCmdUploadMediaInit {
+		t.Fatalf("first command = %q, want %q", commands[0].Cmd, wecomCmdUploadMediaInit)
+	}
+	initBody, ok := commands[0].Body.(wecomUploadMediaInitBody)
+	if !ok {
+		t.Fatalf("unexpected init body type %T", commands[0].Body)
+	}
+	if initBody.Type != "file" || initBody.Filename != "report.pdf" {
+		t.Fatalf("init body = %+v", initBody)
+	}
+	if commands[1].Cmd != wecomCmdUploadMediaChunk {
+		t.Fatalf("second command = %q, want %q", commands[1].Cmd, wecomCmdUploadMediaChunk)
+	}
+	if commands[2].Cmd != wecomCmdUploadMediaEnd {
+		t.Fatalf("third command = %q, want %q", commands[2].Cmd, wecomCmdUploadMediaEnd)
+	}
+	if commands[3].Cmd != wecomCmdSendMsg {
+		t.Fatalf("fourth command = %q, want %q", commands[3].Cmd, wecomCmdSendMsg)
+	}
+
+	body, ok := commands[3].Body.(wecomSendMsgBody)
+	if !ok {
+		t.Fatalf("unexpected body type %T", commands[3].Body)
+	}
+	if body.MsgType != "file" || body.File == nil {
+		t.Fatalf("body = %+v", body)
+	}
+	if body.File.MediaID != "media-3" {
+		t.Fatalf("file media_id = %q, want media-3", body.File.MediaID)
+	}
+}
+
+func newTestWeComChannel(t *testing.T, messageBus *bus.MessageBus) *WeComChannel {
+	t.Helper()
+
+	cfg := config.WeComConfig{BotID: "bot-1"}
+	cfg.SetSecret("secret-1")
+	ch, err := NewChannel(cfg, messageBus)
+	if err != nil {
+		t.Fatalf("NewChannel() error = %v", err)
+	}
+	ch.ctx = context.Background()
+	ch.routes = newReqIDStore(filepath.Join(t.TempDir(), "reqids.json"))
+	return ch
+}
+
+func wecomTestJPEGData(t *testing.T) []byte {
+	t.Helper()
+
+	const jpegBase64 = "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAP//////////////////////////////////////////////////////////////////////////////////////" +
+		"//////////////////////////////////////////////////////////////////////////////////////////////2wBDAf//////////////////////////////////////////////////////////////////////////////////////" +
+		"//////////////////////////////////////////////////////////////////////////////////////////////wAARCAABAAEDASIAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAb/xAAVEQEBAAAAAAAAAAAAAAAAAAAABf/aAAwDAQACEAMQAAAB6A//xAAVEAEBAAAAAAAAAAAAAAAAAAAAEf/aAAgBAQABBQJf/8QAFBEBAAAAAAAAAAAAAAAAAAAAEP/aAAgBAwEBPwF//8QAFBEBAAAAAAAAAAAAAAAAAAAAEP/aAAgBAgEBPwF//8QAFBABAAAAAAAAAAAAAAAAAAAAEP/aAAgBAQAGPwJf/8QAFBABAAAAAAAAAAAAAAAAAAAAEP/aAAgBAQABPyFf/9k="
+
+	return decodeTestBase64(t, jpegBase64)
+}
+
+func TestDecodeWeComUploadFinish_AcceptsNumericCreatedAt(t *testing.T) {
+	t.Parallel()
+
+	resp, err := decodeWeComEnvelopeBody[wecomUploadMediaFinishResponse](wecomEnvelope{
+		Body: json.RawMessage(`{"type":"file","media_id":"media-1","created_at":1380000000}`),
+	})
+	if err != nil {
+		t.Fatalf("decodeWeComEnvelopeBody() error = %v", err)
+	}
+	if resp.Type != "file" || resp.MediaID != "media-1" {
+		t.Fatalf("response = %+v", resp)
+	}
+	if string(resp.CreatedAt) != "1380000000" {
+		t.Fatalf("created_at = %s, want 1380000000", string(resp.CreatedAt))
+	}
+}
+
+func wecomTestAck(body any) wecomEnvelope {
+	var raw []byte
+	if body != nil {
+		encoded, err := json.Marshal(body)
+		if err != nil {
+			panic(err)
+		}
+		raw = encoded
+	}
+	return wecomEnvelope{
+		ErrCode: 0,
+		ErrMsg:  "ok",
+		Body:    raw,
+	}
+}
--- a/pkg/channels/weixin/state.go
+++ b/pkg/channels/weixin/state.go
@ -46,7 +46,7 @@ func picoclawHomeDir() string {

 func buildWeixinSyncBufPath(cfg config.WeixinConfig) string {
 	key := "default"
-	token := strings.TrimSpace(cfg.Token())
+	token := strings.TrimSpace(cfg.Token.String())
 	if token != "" {
 		sum := sha256.Sum256([]byte(strings.TrimSpace(cfg.BaseURL) + "|" + token))
 		key = hex.EncodeToString(sum[:8])
--- a/Show more
+++ b/Show more