fix(FN-2054): harden agent loop stuck-detection and self-healing

- Add defensive cleanup for in-memory task tracking when tasks move state or agents pause
- Improve stuck-detection and self-healing flow to reduce leaked state and missed recovery paths
- Add logging around previously swallowed errors and tighten executor cleanup behavior
- Expand restart and self-healing reliability tests to cover regression scenarios

packages/dashboard/src/mission-interview.test.ts

@@ -700,6 +700,15 @@ describe("mission-interview module", () => {
       expect(agentConfig).toHaveProperty("onThinking");
       expect(agentConfig).toHaveProperty("onText");
 
+      // Verify stream callbacks use the active session id
+      const broadcastSpy = vi.spyOn(missionInterviewStreamManager, "broadcast").mockReturnValue(1);
+      agentConfig.onText("Hello");
+      expect(broadcastSpy).toHaveBeenCalledWith(sessionId, { type: "text", data: "Hello" });
+
+      agentConfig.onThinking("thinking...");
+      expect(broadcastSpy).toHaveBeenCalledWith(sessionId, { type: "thinking", data: "thinking..." });
+      broadcastSpy.mockRestore();
+
       // Verify no unexpected model override fields
       expect(agentConfig).not.toHaveProperty("modelProvider");
       expect(agentConfig).not.toHaveProperty("modelId");

packages/dashboard/src/mission-interview.ts

@@ -171,6 +171,7 @@ export type MissionInterviewResponse =
 /** SSE event types for mission interview streaming */
 export type MissionInterviewStreamEvent =
   | { type: "thinking"; data: string }
+  | { type: "text"; data: string }
   | { type: "question"; data: PlanningQuestion }
   | { type: "summary"; data: MissionPlanSummary }
   | { type: "error"; data: string }
@@ -777,6 +778,10 @@ async function createMissionInterviewAgent(
     },
     onText: (delta: string) => {
       session.thinkingOutput += delta;
+      missionInterviewStreamManager.broadcast(session.id, {
+        type: "text",
+        data: delta,
+      });
     },
   });
 }