diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
new file mode 100644
index 000000000..ca4edc2ab
--- /dev/null
+++ b/.github/workflows/nightly.yml
@@ -0,0 +1,167 @@
+name: Nightly Build
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  generate-version:
+    name: Generate Version
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.version.outputs.version }}
+      tag: ${{ steps.version.outputs.tag }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+
+      - name: Generate version
+        id: version
+        run: |
+          DATE=$(date -u +%Y%m%d)
+          SHA=$(git rev-parse --short=8 HEAD)
+          BASE_VERSION=$(git describe --tags --match "v*" --exclude "*nightly*" --abbrev=0 2>/dev/null || true)
+          if [ -z "$BASE_VERSION" ] || [ "$BASE_VERSION" = "v0.0.0" ]; then
+            VERSION="nightly-${DATE}-${SHA}"
+          else
+            VERSION="${BASE_VERSION}-nightly-${DATE}-${SHA}"
+          fi
+          TAG="nightly-${DATE}-${SHA}"
+          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
+          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    needs: generate-version
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+
+      - name: Build
+        env:
+          VERSION: ${{ needs.generate-version.outputs.version }}
+        run: make build-all VERSION="$VERSION"
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v6
+        with:
+          name: picoclaw-binaries
+          path: build
+
+  build-docker:
+    name: Build Docker
+    runs-on: ubuntu-latest
+    needs: generate-version
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=raw,value=${{ needs.generate-version.outputs.tag }}
+            type=raw,value=${{ needs.generate-version.outputs.version }}
+            type=raw,value=nightly
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./docker/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          platforms: linux/amd64,linux/arm64,linux/riscv64
+          provenance: false
+
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    needs: [generate-version, build, build-docker]
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Download artifacts
+        uses: actions/download-artifact@v6
+        with:
+          name: picoclaw-binaries
+          path: ./build
+
+      - name: Create release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          TAG="${{ needs.generate-version.outputs.tag }}"
+          TITLE="${{ needs.generate-version.outputs.version }}"
+          NOTES=$'Nightly build for **${{ needs.generate-version.outputs.version }}**\n\nThis is an automated build and may be unstable. Use with caution.'
+
+          if gh release view "$TAG" >/dev/null 2>&1; then
+            echo "Release $TAG already exists, updating metadata and assets..."
+            gh release edit "$TAG" \
+              --title "$TITLE" \
+              --notes "$NOTES" \
+              --prerelease
+            gh release upload "$TAG" build/* --clobber
+          else
+            echo "Creating new release $TAG..."
+            gh release create "$TAG" \
+              --title "$TITLE" \
+              --notes "$NOTES" \
+              --target "${{ github.sha }}" \
+              --prerelease \
+              build/*
+          fi
+
+          echo "Updating rolling 'nightly' release..."
+          gh release delete nightly --cleanup-tag -y >/dev/null 2>&1 || true
+          sleep 2
+          gh release create nightly \
+            --title "Nightly Build" \
+            --notes "$NOTES" \
+            --target "${{ github.sha }}" \
+            --prerelease \
+            build/*
+
+          echo "Cleaning up old nightly releases (keeping only the most recent)..."
+          gh release list --limit 100 --json tagName -q '.[].tagName | select(startswith("nightly-"))' | tail -n +2 | while read -r old_tag; do
+            if [ -n "$old_tag" ] && [ "$old_tag" != "$TAG" ]; then
+              echo "Deleting old nightly release: $old_tag"
+              gh release delete "$old_tag" --cleanup-tag -y || true
+            fi
+          done
diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index d531d106b..7bc59bd2d 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -32,9 +32,13 @@ builds:
       - riscv64
       - loong64
       - arm
+      - s390x
+      - mipsle
     goarm:
       - "6"
       - "7"
+    gomips:
+      - softfloat
     main: ./cmd/picoclaw
     ignore:
       - goos: windows
@@ -59,9 +63,13 @@ builds:
       - riscv64
       - loong64
       - arm
+      - s390x
+      - mipsle
     goarm:
       - "6"
       - "7"
+    gomips:
+      - softfloat
     main: ./cmd/picoclaw-launcher
     ignore:
       - goos: windows
@@ -86,9 +94,13 @@ builds:
       - riscv64
       - loong64
       - arm
+      - s390x
+      - mipsle
     goarm:
       - "6"
       - "7"
+    gomips:
+      - softfloat
     main: ./cmd/picoclaw-launcher-tui
     ignore:
       - goos: windows
diff --git a/cmd/picoclaw/main.go b/cmd/picoclaw/main.go
index d9263462e..fe4de8ecc 100644
--- a/cmd/picoclaw/main.go
+++ b/cmd/picoclaw/main.go
@@ -30,7 +30,7 @@ func NewPicoclawCommand() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "picoclaw",
 		Short:   short,
-		Example: "picoclaw list",
+		Example: "picoclaw version",
 	}
 
 	cmd.AddCommand(
diff --git a/pkg/agent/loop.go b/pkg/agent/loop.go
index f682a7ffe..f1c275806 100644
--- a/pkg/agent/loop.go
+++ b/pkg/agent/loop.go
@@ -632,15 +632,6 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
 	}
 
 	route, agent, routeErr := al.resolveMessageRoute(msg)
-
-	// Commands are checked before requiring a successful route.
-	// Global commands (/help, /show, /switch) work even when routing fails;
-	// context-dependent commands check their own Runtime fields and report
-	// "unavailable" when the required capability is nil.
-	if response, handled := al.handleCommand(ctx, msg, agent); handled {
-		return response, nil
-	}
-
 	if routeErr != nil {
 		return "", routeErr
 	}
@@ -666,7 +657,7 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
 			"route_channel": route.Channel,
 		})
 
-	return al.runAgentLoop(ctx, agent, processOptions{
+	opts := processOptions{
 		SessionKey:      sessionKey,
 		Channel:         msg.Channel,
 		ChatID:          msg.ChatID,
@@ -675,7 +666,15 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
 		DefaultResponse: defaultResponse,
 		EnableSummary:   true,
 		SendResponse:    false,
-	})
+	}
+
+	// context-dependent commands check their own Runtime fields and report
+	// "unavailable" when the required capability is nil.
+	if response, handled := al.handleCommand(ctx, msg, agent, &opts); handled {
+		return response, nil
+	}
+
+	return al.runAgentLoop(ctx, agent, opts)
 }
 
 func (al *AgentLoop) resolveMessageRoute(msg bus.InboundMessage) (routing.ResolvedRoute, *AgentInstance, error) {
@@ -1543,10 +1542,20 @@ func (al *AgentLoop) summarizeSession(agent *AgentInstance, sessionKey string) {
 		return
 	}
 
+	const (
+		maxSummarizationMessages = 10
+		llmMaxRetries            = 3
+		llmTemperature           = 0.3
+		fallbackMaxContentLength = 200
+	)
+
 	// Multi-Part Summarization
 	var finalSummary string
-	if len(validMessages) > 10 {
+	if len(validMessages) > maxSummarizationMessages {
 		mid := len(validMessages) / 2
+
+		mid = al.findNearestUserMessage(validMessages, mid)
+
 		part1 := validMessages[:mid]
 		part2 := validMessages[mid:]
 
@@ -1558,18 +1567,9 @@ func (al *AgentLoop) summarizeSession(agent *AgentInstance, sessionKey string) {
 			s1,
 			s2,
 		)
-		resp, err := agent.Provider.Chat(
-			ctx,
-			[]providers.Message{{Role: "user", Content: mergePrompt}},
-			nil,
-			agent.Model,
-			map[string]any{
-				"max_tokens":       1024,
-				"temperature":      0.3,
-				"prompt_cache_key": agent.ID,
-			},
-		)
-		if err == nil {
+
+		resp, err := al.retryLLMCall(ctx, agent, mergePrompt, llmMaxRetries)
+		if err == nil && resp.Content != "" {
 			finalSummary = resp.Content
 		} else {
 			finalSummary = s1 + " " + s2
@@ -1589,6 +1589,68 @@ func (al *AgentLoop) summarizeSession(agent *AgentInstance, sessionKey string) {
 	}
 }
 
+// findNearestUserMessage finds the nearest user message to the given index.
+// It searches backward first, then forward if no user message is found.
+func (al *AgentLoop) findNearestUserMessage(messages []providers.Message, mid int) int {
+	originalMid := mid
+
+	for mid > 0 && messages[mid].Role != "user" {
+		mid--
+	}
+
+	if messages[mid].Role == "user" {
+		return mid
+	}
+
+	mid = originalMid
+	for mid < len(messages) && messages[mid].Role != "user" {
+		mid++
+	}
+
+	if mid < len(messages) {
+		return mid
+	}
+
+	return originalMid
+}
+
+// retryLLMCall calls the LLM with retry logic.
+func (al *AgentLoop) retryLLMCall(
+	ctx context.Context,
+	agent *AgentInstance,
+	prompt string,
+	maxRetries int,
+) (*providers.LLMResponse, error) {
+	const (
+		llmTemperature = 0.3
+	)
+
+	var resp *providers.LLMResponse
+	var err error
+
+	for attempt := 0; attempt < maxRetries; attempt++ {
+		resp, err = agent.Provider.Chat(
+			ctx,
+			[]providers.Message{{Role: "user", Content: prompt}},
+			nil,
+			agent.Model,
+			map[string]any{
+				"max_tokens":       agent.MaxTokens,
+				"temperature":      llmTemperature,
+				"prompt_cache_key": agent.ID,
+			},
+		)
+		if err == nil && resp != nil && resp.Content != "" {
+			return resp, nil
+		}
+		if attempt < maxRetries-1 {
+			time.Sleep(time.Duration(attempt+1) * 100 * time.Millisecond)
+		}
+	}
+
+	return resp, err
+}
+
 // summarizeBatch summarizes a batch of messages.
 func (al *AgentLoop) summarizeBatch(
 	ctx context.Context,
@@ -1596,6 +1658,13 @@ func (al *AgentLoop) summarizeBatch(
 	batch []providers.Message,
 	existingSummary string,
 ) (string, error) {
+	const (
+		llmMaxRetries             = 3
+		llmTemperature            = 0.3
+		fallbackMinContentLength  = 200
+		fallbackMaxContentPercent = 10
+	)
+
 	var sb strings.Builder
 	sb.WriteString(
 		"Provide a concise summary of this conversation segment, preserving core context and key points.\n",
@@ -1611,21 +1680,40 @@ func (al *AgentLoop) summarizeBatch(
 	}
 	prompt := sb.String()
 
-	response, err := agent.Provider.Chat(
-		ctx,
-		[]providers.Message{{Role: "user", Content: prompt}},
-		nil,
-		agent.Model,
-		map[string]any{
-			"max_tokens":       1024,
-			"temperature":      0.3,
-			"prompt_cache_key": agent.ID,
-		},
-	)
-	if err != nil {
-		return "", err
+	response, err := al.retryLLMCall(ctx, agent, prompt, llmMaxRetries)
+	if err == nil && response.Content != "" {
+		return strings.TrimSpace(response.Content), nil
 	}
-	return response.Content, nil
+
+	var fallback strings.Builder
+	fallback.WriteString("Conversation summary: ")
+	for i, m := range batch {
+		if i > 0 {
+			fallback.WriteString(" | ")
+		}
+		content := strings.TrimSpace(m.Content)
+		runes := []rune(content)
+		if len(runes) == 0 {
+			fallback.WriteString(fmt.Sprintf("%s: ", m.Role))
+			continue
+		}
+
+		keepLength := len(runes) * fallbackMaxContentPercent / 100
+		if keepLength < fallbackMinContentLength {
+			keepLength = fallbackMinContentLength
+		}
+
+		if keepLength > len(runes) {
+			keepLength = len(runes)
+		}
+
+		content = string(runes[:keepLength])
+		if keepLength < len(runes) {
+			content += "..."
+		}
+		fallback.WriteString(fmt.Sprintf("%s: %s", m.Role, content))
+	}
+	return fallback.String(), nil
 }
 
 // estimateTokens estimates the number of tokens in a message list.
@@ -1644,6 +1732,7 @@ func (al *AgentLoop) handleCommand(
 	ctx context.Context,
 	msg bus.InboundMessage,
 	agent *AgentInstance,
+	opts *processOptions,
 ) (string, bool) {
 	if !commands.HasCommandPrefix(msg.Content) {
 		return "", false
@@ -1653,7 +1742,7 @@ func (al *AgentLoop) handleCommand(
 		return "", false
 	}
 
-	rt := al.buildCommandsRuntime(agent)
+	rt := al.buildCommandsRuntime(agent, opts)
 	executor := commands.NewExecutor(al.cmdRegistry, rt)
 
 	var commandReply string
@@ -1682,7 +1771,7 @@ func (al *AgentLoop) handleCommand(
 	}
 }
 
-func (al *AgentLoop) buildCommandsRuntime(agent *AgentInstance) *commands.Runtime {
+func (al *AgentLoop) buildCommandsRuntime(agent *AgentInstance, opts *processOptions) *commands.Runtime {
 	rt := &commands.Runtime{
 		Config:          al.cfg,
 		ListAgentIDs:    al.registry.ListAgentIDs,
@@ -1712,6 +1801,20 @@ func (al *AgentLoop) buildCommandsRuntime(agent *AgentInstance) *commands.Runtim
 			agent.Model = value
 			return oldModel, nil
 		}
+
+		rt.ClearHistory = func() error {
+			if opts == nil {
+				return fmt.Errorf("process options not available")
+			}
+			if agent.Sessions == nil {
+				return fmt.Errorf("sessions not initialized for agent")
+			}
+
+			agent.Sessions.SetHistory(opts.SessionKey, make([]providers.Message, 0))
+			agent.Sessions.SetSummary(opts.SessionKey, "")
+			agent.Sessions.Save(opts.SessionKey)
+			return nil
+		}
 	}
 	return rt
 }
diff --git a/pkg/commands/builtin.go b/pkg/commands/builtin.go
index a36dd3eba..aed6a1874 100644
--- a/pkg/commands/builtin.go
+++ b/pkg/commands/builtin.go
@@ -12,5 +12,6 @@ func BuiltinDefinitions() []Definition {
 		listCommand(),
 		switchCommand(),
 		checkCommand(),
+		clearCommand(),
 	}
 }
diff --git a/pkg/commands/cmd_clear.go b/pkg/commands/cmd_clear.go
new file mode 100644
index 000000000..f0951eb3b
--- /dev/null
+++ b/pkg/commands/cmd_clear.go
@@ -0,0 +1,20 @@
+package commands
+
+import "context"
+
+func clearCommand() Definition {
+	return Definition{
+		Name:        "clear",
+		Description: "Clear the chat history",
+		Usage:       "/clear",
+		Handler: func(_ context.Context, req Request, rt *Runtime) error {
+			if rt == nil || rt.ClearHistory == nil {
+				return req.Reply(unavailableMsg)
+			}
+			if err := rt.ClearHistory(); err != nil {
+				return req.Reply("Failed to clear chat history: " + err.Error())
+			}
+			return req.Reply("Chat history cleared!")
+		},
+	}
+}
diff --git a/pkg/commands/runtime.go b/pkg/commands/runtime.go
index 227d495f4..037184686 100644
--- a/pkg/commands/runtime.go
+++ b/pkg/commands/runtime.go
@@ -13,4 +13,5 @@ type Runtime struct {
 	GetEnabledChannels func() []string
 	SwitchModel        func(value string) (oldModel string, err error)
 	SwitchChannel      func(value string) error
+	ClearHistory       func() error
 }