feat(FN-4761): sync PR reviews and surface review threads

Fusion-Task-Id: FN-4761
Fusion-Task-Lineage: b6b1ed73-c396-4dd2-b97f-366272d05c7f

packages/dashboard/app/components/__tests__/PrPanel.reviews.test.tsx

@@ -0,0 +1,43 @@
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import { render, screen } from "@testing-library/react";
+import { PrPanel } from "../PrPanel";
+
+vi.mock("../../api", async () => {
+  const actual = await vi.importActual<object>("../../api");
+  return {
+    ...actual,
+    refreshPrStatus: vi.fn(),
+    fetchPrChecks: vi.fn().mockResolvedValue({ checks: [], rollup: "unknown", lastCheckedAt: new Date().toISOString() }),
+    fetchPrReviews: vi.fn().mockResolvedValue({
+      snapshot: {
+        decision: "CHANGES_REQUESTED",
+        items: [
+          { id: "r1", author: { login: "alice" }, body: "See src/index.ts:12", state: "CHANGES_REQUESTED", htmlUrl: "https://github.com/rev/1", createdAt: new Date().toISOString() },
+        ],
+      },
+      comments: [],
+    }),
+  };
+});
+
+describe("PrPanel reviews", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders synced reviewer thread and todo banner", async () => {
+    render(
+      <PrPanel
+        taskId="FN-1"
+        prInfo={{ url: "https://github.com/o/r/pull/1", number: 1, status: "open", title: "Title", headBranch: "x", baseBranch: "main", commentCount: 0 }}
+        taskColumn="todo"
+        prAuthAvailable
+        onPrUpdated={() => {}}
+        addToast={() => {}}
+      />,
+    );
+
+    expect(await screen.findByText("@alice")).toBeInTheDocument();
+    expect(screen.getByText("Auto-moved to Todo — reviewer feedback ready")).toBeInTheDocument();
+  });
+});

packages/dashboard/app/components/__tests__/PrPanel.test.tsx

@@ -5,9 +5,10 @@ import { PrPanel } from "../PrPanel";
 vi.mock("../../api", () => ({
   refreshPrStatus: vi.fn(),
   fetchPrChecks: vi.fn(),
+  fetchPrReviews: vi.fn(),
 }));
 
-import { refreshPrStatus, fetchPrChecks } from "../../api";
+import { refreshPrStatus, fetchPrChecks, fetchPrReviews } from "../../api";
 
 const mockAddToast = vi.fn();
 const mockOnPrUpdated = vi.fn();
@@ -32,6 +33,7 @@ describe("PrPanel", () => {
       rollup: "unknown",
       lastCheckedAt: new Date().toISOString(),
     });
+    (fetchPrReviews as ReturnType<typeof vi.fn>).mockResolvedValue({ snapshot: { decision: null, items: [] }, comments: [] });
   });
 
   it("renders create button and calls onRequestCreatePr", () => {