feat(FN-1787): merge fusion/fn-1787

packages/core/src/mission-store.test.ts

@@ -1044,6 +1044,8 @@ describe("MissionStore", () => {
 
       expect(linked.taskId).toBe("FN-001");
       expect(linked.status).toBe("triaged");
+      expect(linked.loopState).toBe("implementing");
+      expect(linked.implementationAttemptCount).toBe(1);
       expect(taskRow.missionId).toBe(mission.id);
       expect(taskRow.sliceId).toBe(slice.id);
     });
@@ -1542,6 +1544,8 @@ describe("MissionStore", () => {
       // Feature should be triaged with a taskId
       expect(triaged.status).toBe("triaged");
       expect(triaged.taskId).toBeTruthy();
+      expect(triaged.loopState).toBe("implementing");
+      expect(triaged.implementationAttemptCount).toBe(1);
 
       // Task should exist with correct properties
       const task = await ts.getTask(triaged.taskId!);

packages/core/src/mission-store.ts

@@ -1667,10 +1667,17 @@ export class MissionStore extends EventEmitter<MissionStoreEvents> {
 
     const linkage = this.resolveTaskLinkage(feature.sliceId);
 
+    // When first linking (loopState is idle or falsy), transition to implementing
+    const shouldTransitionLoop = !feature.loopState || feature.loopState === "idle";
+    const loopStateUpdates: Partial<MissionFeature> = shouldTransitionLoop
+      ? { loopState: "implementing", implementationAttemptCount: 1 }
+      : {};
+
     const updated = this.db.transaction(() => {
       const featureUpdate = this.updateFeature(featureId, {
         taskId,
         status: "triaged",
+        ...loopStateUpdates,
       });
 
       // Also update the task's mission/slice linkage for bidirectional linking.