feat(FN-3056): merge fusion/fn-3056

This merge ships several feature and infrastructure improvements across the codebase. Task title validation is strengthened in triage with stricter rejection of malformed titles and preference for prompt-declared titles (FN-3056), while task creation now preserves priority settings (FN-3210). The Mi

Fusion-Task-Id: FN-3056

packages/engine/src/__tests__/triage.test.ts

@@ -1335,6 +1335,84 @@ describe("approved triage recovery", () => {
     );
   });
 
+  it("updates malformed metadata title from prompt heading when task ID matches", async () => {
+    await writeFile(
+      join(rootDir, ".fusion", "tasks", "FN-001", "PROMPT.md"),
+      "# Task: FN-001 - Experimental AI Agent Onboarding Flow\n\n**Size:** M\n\n## Review Level: 2\n\nRecovered specification",
+    );
+
+    const store = createMockStore({
+      getSettings: vi.fn().mockResolvedValue({
+        maxConcurrent: 2,
+        maxWorktrees: 4,
+        pollIntervalMs: 10000,
+        groupOverlappingFiles: false,
+        autoMerge: true,
+        requirePlanApproval: false,
+      } as Settings),
+    });
+
+    const processor = new TriageProcessor(store, rootDir);
+    const recovered = await processor.recoverApprovedTask({
+      id: "FN-001",
+      description: "Recovered triage task",
+      column: "triage",
+      status: "planning",
+      title: "Created task **FN-999** in triage",
+      dependencies: [],
+      steps: [],
+      currentStep: 0,
+      log: [{ timestamp: "2026-01-01T00:00:00.000Z", action: "Spec review: APPROVE" }],
+      createdAt: "2026-01-01T00:00:00.000Z",
+      updatedAt: "2026-01-01T00:02:00.000Z",
+    });
+
+    expect(recovered).toBe(true);
+    expect(store.updateTask).toHaveBeenCalledWith(
+      "FN-001",
+      expect.objectContaining({ title: "Experimental AI Agent Onboarding Flow" }),
+    );
+  });
+
+  it("does not overwrite title when heading task ID does not match", async () => {
+    await writeFile(
+      join(rootDir, ".fusion", "tasks", "FN-001", "PROMPT.md"),
+      "# Task: FN-999 - Wrong Task\n\n**Size:** M\n\n## Review Level: 2\n\nRecovered specification",
+    );
+
+    const store = createMockStore({
+      getSettings: vi.fn().mockResolvedValue({
+        maxConcurrent: 2,
+        maxWorktrees: 4,
+        pollIntervalMs: 10000,
+        groupOverlappingFiles: false,
+        autoMerge: true,
+        requirePlanApproval: false,
+      } as Settings),
+    });
+
+    const processor = new TriageProcessor(store, rootDir);
+    const recovered = await processor.recoverApprovedTask({
+      id: "FN-001",
+      description: "Recovered triage task",
+      column: "triage",
+      status: "planning",
+      title: "Existing title",
+      dependencies: [],
+      steps: [],
+      currentStep: 0,
+      log: [{ timestamp: "2026-01-01T00:00:00.000Z", action: "Spec review: APPROVE" }],
+      createdAt: "2026-01-01T00:00:00.000Z",
+      updatedAt: "2026-01-01T00:02:00.000Z",
+    });
+
+    expect(recovered).toBe(true);
+    expect(store.updateTask).toHaveBeenCalledWith(
+      "FN-001",
+      expect.not.objectContaining({ title: expect.any(String) }),
+    );
+  });
+
   it("clears status and error before moving approved tasks to todo", async () => {
     const store = createMockStore({
       getSettings: vi.fn().mockResolvedValue({