fix: deliver heartbeat LLM response to user during plan interview/review

After restart, heartbeat runs the LLM which sees MEMORY.md and generates
a contextual response, but it was always silently discarded. Now check
plan status after the LLM responds and return UserResult when interviewing
or review so the conversation can resume.

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

cmd/picoclaw/cmd_gateway.go

@@ -115,8 +115,11 @@ func gatewayCmd() {
 		if response == "HEARTBEAT_OK" {
 			return tools.SilentResult("Heartbeat OK")
 		}
-		// For heartbeat, always return silent - the subagent result will be
+		// Deliver response to user when a plan interview/review needs resuming.
-		// sent to user via processSystemMessage when the async task completes
+		// For async tasks (spawn), results are delivered separately via processSystemMessage.
+		if status := agentLoop.GetPlanStatus(); status == "interviewing" || status == "review" {
+			return tools.UserResult(response)
+		}
 		return tools.SilentResult(response)
 	})
 

pkg/agent/loop.go

@@ -2301,6 +2301,15 @@ func (al *AgentLoop) GetPlanInfo() (hasPlan bool, status string, currentPhase, t
 	return
 }
 
+// GetPlanStatus returns the current plan status ("interviewing", "executing", "review", etc.) or "".
+func (al *AgentLoop) GetPlanStatus() string {
+	agent := al.registry.GetDefaultAgent()
+	if agent == nil {
+		return ""
+	}
+	return agent.ContextBuilder.GetPlanStatus()
+}
+
 // GetPlanPhases returns structured phase/step data from the default agent's plan.
 func (al *AgentLoop) GetPlanPhases() []PlanPhase {
 	agent := al.registry.GetDefaultAgent()