fix(agent): suppress heartbeat tool feedback (#1937)

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)
 }
@@ -1242,14 +1243,15 @@ 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
 	})
 }
 
@@ -2305,7 +2307,9 @@ 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(),