feat(telegram): show tool progress on placeholder during agent loop

Edit the Telegram placeholder message with tool names and iteration
count (e.g. "🔧 web_search (2/20)") so users see live progress instead
of a static "Thinking... 💭". Non-supporting channels silently skip.

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

pkg/agent/loop.go

@@ -654,6 +654,16 @@ func (al *AgentLoop) runLLMIteration(ctx context.Context, agent *AgentInstance,
 				"iteration": iteration,
 			})
 
+		// Publish status update for channels that support placeholder editing
+		if !constants.IsInternalChannel(opts.Channel) {
+			al.bus.PublishOutbound(bus.OutboundMessage{
+				Channel:  opts.Channel,
+				ChatID:   opts.ChatID,
+				Content:  fmt.Sprintf("🔧 %s (%d/%d)", strings.Join(toolNames, ", "), iteration, agent.MaxIterations),
+				IsStatus: true,
+			})
+		}
+
 		// Build assistant message with tool calls
 		assistantMsg := providers.Message{
 			Role:    "assistant",

pkg/bus/types.go

@@ -11,9 +11,10 @@ type InboundMessage struct {
 }
 
 type OutboundMessage struct {
-	Channel string `json:"channel"`
+	Channel  string `json:"channel"`
-	ChatID  string `json:"chat_id"`
+	ChatID   string `json:"chat_id"`
-	Content string `json:"content"`
+	Content  string `json:"content"`
+	IsStatus bool   `json:"is_status,omitempty"`
 }
 
 type MessageHandler func(InboundMessage) error

pkg/channels/manager.go

@@ -272,6 +272,20 @@ func (m *Manager) dispatchOutbound(ctx context.Context) {
 				continue
 			}
 
+			if msg.IsStatus {
+				if sc, ok := channel.(interface {
+					EditStatus(context.Context, bus.OutboundMessage) error
+				}); ok {
+					if err := sc.EditStatus(ctx, msg); err != nil {
+						logger.DebugCF("channels", "EditStatus failed", map[string]interface{}{
+							"channel": msg.Channel,
+							"error":   err.Error(),
+						})
+					}
+				}
+				continue
+			}
+
 			if err := channel.Send(ctx, msg); err != nil {
 				logger.ErrorCF("channels", "Error sending message to channel", map[string]interface{}{
 					"channel": msg.Channel,

pkg/channels/telegram.go

@@ -146,6 +146,23 @@ func (c *TelegramChannel) Stop(ctx context.Context) error {
 	return nil
 }
 
+func (c *TelegramChannel) EditStatus(ctx context.Context, msg bus.OutboundMessage) error {
+	if !c.IsRunning() {
+		return nil
+	}
+	chatID, err := parseChatID(msg.ChatID)
+	if err != nil {
+		return nil
+	}
+	pID, ok := c.placeholders.Load(msg.ChatID)
+	if !ok {
+		return nil // no placeholder → nothing to edit
+	}
+	editMsg := tu.EditMessageText(tu.ID(chatID), pID.(int), msg.Content)
+	_, err = c.bot.EditMessageText(ctx, editMsg)
+	return err
+}
+
 func (c *TelegramChannel) Send(ctx context.Context, msg bus.OutboundMessage) error {
 	if !c.IsRunning() {
 		return fmt.Errorf("telegram bot not running")