feat(feishu): add tool progress feedback with verbose toggle

- Send "Thinking..." placeholder card on message receive
- Report each tool call and result as progress updates on the card
- Accumulate progress lines in a single evolving card (EditMessage)
- Add IsProgress flag to OutboundMessage for progress vs final distinction
- Add Bus() accessor to BaseChannel for progress support in channel code
- Add FeaturesConfig with Verbose flag to gate progress updates
- When verbose=false (default), discard progress silently (old behavior)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pkg/agent/loop.go

@@ -1199,6 +1199,16 @@ func (al *AgentLoop) runLLMIteration(
 						"iteration": iteration,
 					})
 
+				// Send progress update to user
+				if !constants.IsInternalChannel(opts.Channel) {
+					al.bus.PublishOutbound(ctx, bus.OutboundMessage{
+						Channel:    opts.Channel,
+						ChatID:     opts.ChatID,
+						Content:    formatToolProgress(tc.Name, tc.Arguments),
+						IsProgress: true,
+					})
+				}
+
 				// Create async callback for tools that implement AsyncExecutor.
 				// When the background work completes, this publishes the result
 				// as an inbound system message so processSystemMessage routes it
@@ -1271,6 +1281,18 @@ func (al *AgentLoop) runLLMIteration(
 					})
 			}
 
+			// Report tool result to user via progress update
+			if !constants.IsInternalChannel(opts.Channel) {
+				if resultMsg := formatToolResult(r.tc.Name, r.tc.Arguments, r.result); resultMsg != "" {
+					al.bus.PublishOutbound(ctx, bus.OutboundMessage{
+						Channel:    opts.Channel,
+						ChatID:     opts.ChatID,
+						Content:    resultMsg,
+						IsProgress: true,
+					})
+				}
+			}
+
 			// If tool returned media refs, publish them as outbound media
 			if len(r.result.Media) > 0 {
 				parts := make([]bus.MediaPart, 0, len(r.result.Media))
@@ -1872,3 +1894,74 @@ func extractParentPeer(msg bus.InboundMessage) *routing.RoutePeer {
 	}
 	return &routing.RoutePeer{Kind: parentKind, ID: parentID}
 }
+
+// formatToolProgress formats a human-readable progress string for a tool call.
+func formatToolProgress(toolName string, args map[string]any) string {
+	argStr := func(key string) string {
+		if v, ok := args[key]; ok {
+			if s, ok := v.(string); ok {
+				return s
+			}
+		}
+		return ""
+	}
+
+	switch toolName {
+	case "write_file":
+		if path := argStr("path"); path != "" {
+			return fmt.Sprintf("Writing %s", path)
+		}
+	case "read_file":
+		if path := argStr("path"); path != "" {
+			return fmt.Sprintf("Reading %s", path)
+		}
+	case "edit_file":
+		if path := argStr("path"); path != "" {
+			return fmt.Sprintf("Editing %s", path)
+		}
+	case "exec":
+		if cmd := argStr("command"); cmd != "" {
+			return fmt.Sprintf("Executing %s", utils.Truncate(cmd, 80))
+		}
+	case "web_search":
+		if query := argStr("query"); query != "" {
+			return fmt.Sprintf("Searching %s", utils.Truncate(query, 60))
+		}
+	case "web_fetch":
+		if u := argStr("url"); u != "" {
+			return fmt.Sprintf("Fetching %s", utils.Truncate(u, 80))
+		}
+	case "spawn":
+		if label := argStr("label"); label != "" {
+			return fmt.Sprintf("Subtask %s", label)
+		}
+	case "message":
+		return "Sending message"
+	case "cron":
+		if action := argStr("action"); action != "" {
+			return fmt.Sprintf("Cron %s", action)
+		}
+	}
+
+	return toolName
+}
+
+// formatToolResult formats a result summary for a completed tool call.
+// Returns empty string if no result message is needed.
+func formatToolResult(toolName string, args map[string]any, result *tools.ToolResult) string {
+	desc := formatToolProgress(toolName, args)
+
+	// Error: always report
+	if result.Err != nil {
+		errPreview := utils.Truncate(result.Err.Error(), 100)
+		return fmt.Sprintf("[%s] Failed: %s", desc, errPreview)
+	}
+
+	// exec: show output summary
+	if toolName == "exec" && result.ForLLM != "" {
+		output := utils.Truncate(result.ForLLM, 120)
+		return fmt.Sprintf("[%s] Done:\n%s", desc, output)
+	}
+
+	return ""
+}

pkg/bus/types.go

@@ -33,6 +33,7 @@ type OutboundMessage struct {
 	Channel    string `json:"channel"`
 	ChatID     string `json:"chat_id"`
 	Content    string `json:"content"`
+	IsProgress bool   `json:"is_progress,omitempty"`
 }
 
 // MediaPart describes a single media attachment to send.

pkg/channels/base.go

@@ -311,6 +311,9 @@ func (c *BaseChannel) SetMediaStore(s media.MediaStore) { c.mediaStore = s }
 // GetMediaStore returns the injected MediaStore (may be nil).
 func (c *BaseChannel) GetMediaStore() media.MediaStore { return c.mediaStore }
 
+// Bus returns the underlying MessageBus.
+func (c *BaseChannel) Bus() *bus.MessageBus { return c.bus }
+
 // SetPlaceholderRecorder injects a PlaceholderRecorder into the channel.
 func (c *BaseChannel) SetPlaceholderRecorder(r PlaceholderRecorder) {
 	c.placeholderRecorder = r

pkg/channels/feishu/feishu_32.go

@@ -19,7 +19,7 @@ type FeishuChannel struct {
 var errUnsupported = errors.New("feishu channel is not supported on 32-bit architectures")
 
 // NewFeishuChannel returns an error on 32-bit architectures where the Feishu SDK is not supported
-func NewFeishuChannel(cfg config.FeishuConfig, bus *bus.MessageBus) (*FeishuChannel, error) {
+func NewFeishuChannel(cfg config.FeishuConfig, _ config.FeaturesConfig, bus *bus.MessageBus) (*FeishuChannel, error) {
 	return nil, errors.New(
 		"feishu channel is not supported on 32-bit architectures (armv7l, 386, etc.). Please use a 64-bit system or disable feishu in your config",
 	)

pkg/channels/feishu/feishu_64.go

@@ -11,8 +11,10 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"strings"
 	"sync"
 	"sync/atomic"
+	"time"
 
 	lark "github.com/larksuite/oapi-sdk-go/v3"
 	larkcore "github.com/larksuite/oapi-sdk-go/v3/core"
@@ -32,6 +34,7 @@ import (
 type FeishuChannel struct {
 	*channels.BaseChannel
 	config   config.FeishuConfig
+	features config.FeaturesConfig
 	client   *lark.Client
 	wsClient *larkws.Client
 
@@ -39,9 +42,18 @@ type FeishuChannel struct {
 
 	mu           sync.Mutex
 	cancel       context.CancelFunc
+	placeholders sync.Map // chatID -> *progressState
 }
 
-func NewFeishuChannel(cfg config.FeishuConfig, bus *bus.MessageBus) (*FeishuChannel, error) {
+// progressState tracks the placeholder card and accumulated progress lines for a chat.
+type progressState struct {
+	messageID string
+	lines     []string
+}
+
+func NewFeishuChannel(
+	cfg config.FeishuConfig, features config.FeaturesConfig, bus *bus.MessageBus,
+) (*FeishuChannel, error) {
 	base := channels.NewBaseChannel("feishu", cfg, bus, cfg.AllowFrom,
 		channels.WithGroupTrigger(cfg.GroupTrigger),
 		channels.WithReasoningChannelID(cfg.ReasoningChannelID),
@@ -50,6 +62,7 @@ func NewFeishuChannel(cfg config.FeishuConfig, bus *bus.MessageBus) (*FeishuChan
 	ch := &FeishuChannel{
 		BaseChannel: base,
 		config:      cfg,
+		features:    features,
 		client:      lark.NewClient(cfg.AppID, cfg.AppSecret),
 	}
 	ch.SetOwner(ch)
@@ -121,6 +134,31 @@ func (c *FeishuChannel) Send(ctx context.Context, msg bus.OutboundMessage) error
 		return fmt.Errorf("chat ID is empty: %w", channels.ErrSendFailed)
 	}
 
+	// Progress update: append to the existing placeholder card instead of sending a new message.
+	if msg.IsProgress {
+		if !c.features.Verbose {
+			return nil
+		}
+		val, ok := c.placeholders.Load(msg.ChatID)
+		if !ok {
+			// Placeholder already consumed (e.g. by final response); silently discard.
+			return nil
+		}
+		state := val.(*progressState)
+		state.lines = append(state.lines, "─ "+msg.Content)
+		combined := strings.Join(state.lines, "\n")
+		if err := c.EditMessage(ctx, msg.ChatID, state.messageID, combined); err != nil {
+			logger.DebugCF("feishu", "Failed to update progress card", map[string]any{
+				"chat_id": msg.ChatID,
+				"error":   err.Error(),
+			})
+		}
+		return nil
+	}
+
+	// Final response: consume placeholder (stop progress updates), then send as new message.
+	c.placeholders.Delete(msg.ChatID)
+
 	// Build interactive card with markdown content
 	cardContent, err := buildMarkdownCard(msg.Content)
 	if err != nil {
@@ -424,6 +462,30 @@ func (c *FeishuChannel) handleMessageReceive(ctx context.Context, event *larkim.
 		"preview":    utils.Truncate(content, 80),
 	})
 
+	// Send thinking placeholder as interactive card before dispatching to agent.
+	// Using a card (not text) so that subsequent Message.Patch calls can update it.
+	placeholderCtx, placeholderCancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer placeholderCancel()
+
+	initialText := "Thinking..."
+	cardContent, _ := buildMarkdownCard(initialText)
+	placeholderReq := larkim.NewCreateMessageReqBuilder().
+		ReceiveIdType(larkim.ReceiveIdTypeChatId).
+		Body(larkim.NewCreateMessageReqBodyBuilder().
+			ReceiveId(chatID).
+			MsgType(larkim.MsgTypeInteractive).
+			Content(cardContent).
+			Build()).
+		Build()
+
+	placeholderResp, placeholderErr := c.client.Im.V1.Message.Create(placeholderCtx, placeholderReq)
+	if placeholderErr == nil && placeholderResp.Success() && placeholderResp.Data.MessageId != nil {
+		c.placeholders.Store(chatID, &progressState{
+			messageID: *placeholderResp.Data.MessageId,
+			lines:     []string{initialText},
+		})
+	}
+
 	c.HandleMessage(ctx, peer, messageID, senderID, chatID, content, mediaRefs, metadata, senderInfo)
 	return nil
 }

pkg/channels/feishu/init.go

@@ -8,6 +8,6 @@ import (
 
 func init() {
 	channels.RegisterFactory("feishu", func(cfg *config.Config, b *bus.MessageBus) (channels.Channel, error) {
-		return NewFeishuChannel(cfg.Channels.Feishu, b)
+		return NewFeishuChannel(cfg.Channels.Feishu, cfg.Features, b)
 	})
 }

pkg/config/config.go

@@ -59,10 +59,16 @@ type Config struct {
 	Tools     ToolsConfig     `json:"tools"`
 	Heartbeat HeartbeatConfig `json:"heartbeat"`
 	Devices   DevicesConfig   `json:"devices"`
+	Features  FeaturesConfig  `json:"features"`
 	// BuildInfo contains build-time version information
 	BuildInfo BuildInfo `json:"build_info,omitempty"`
 }
 
+// FeaturesConfig holds feature flags that control optional behavior across the system.
+type FeaturesConfig struct {
+	Verbose bool `json:"verbose" env:"PICOCLAW_FEATURES_VERBOSE"`
+}
+
 // BuildInfo contains build-time version information
 type BuildInfo struct {
 	Version   string `json:"version"`

pkg/config/defaults.go

@@ -510,6 +510,9 @@ func DefaultConfig() *Config {
 			Enabled:    false,
 			MonitorUSB: true,
 		},
+		Features: FeaturesConfig{
+			Verbose: false,
+		},
 		BuildInfo: BuildInfo{
 			Version:   Version,
 			GitCommit: GitCommit,