diff --git a/client/src/components/lanes/__tests__/LaneCard.test.tsx b/client/src/components/lanes/__tests__/LaneCard.test.tsx
index 216e4ef..0140e1b 100644
--- a/client/src/components/lanes/__tests__/LaneCard.test.tsx
+++ b/client/src/components/lanes/__tests__/LaneCard.test.tsx
@@ -24,6 +24,9 @@ vi.mock("../../../lib/api", () => ({
       down: vi.fn(),
       preflight: vi.fn().mockResolvedValue({ blocked: [], warnings: [] }),
       integration: vi.fn(),
+      agentsInstall: vi.fn(),
+      mcpSync: vi.fn(),
+      syncBaseCheck: vi.fn(),
     },
     locks: {
       list: vi.fn(),
@@ -364,3 +367,84 @@ describe("LaneCard — named locks", () => {
     expect(screen.queryByTestId("lane-locks-1")).not.toBeInTheDocument();
   });
 });
+
+describe("agents install / mcp sync / integration badges / sync check", () => {
+  beforeEach(() => {
+    vi.mocked(api.lanes.runtime).mockResolvedValue({
+      available: true as const,
+      provisioned: true as const,
+      up: false,
+      slot: 1,
+      profileDir: "/work/demo/.ccam/profile",
+      ports: {},
+    });
+    vi.mocked(api.lanes.integration).mockImplementation((_id, name) =>
+      Promise.resolve({ enabled: name === "tracker" })
+    );
+  });
+
+  it("shows integration badges reflecting each toggle's state", async () => {
+    render(<LaneCard lane={makeLane()} onAction={vi.fn()} />);
+    const tracker = await screen.findByTestId("lane-integration-tracker");
+    const devQc = await screen.findByTestId("lane-integration-dev_qc");
+    expect(tracker.className).toContain("status-success");
+    expect(devQc.className).not.toContain("status-success");
+  });
+
+  it("clicking Install agents calls the API and shows the result", async () => {
+    vi.mocked(api.lanes.agentsInstall).mockResolvedValue({
+      installed: ["qc-local.md", "senior-gate-reviewer.md"],
+    });
+    render(<LaneCard lane={makeLane()} onAction={vi.fn()} />);
+    const button = await screen.findByTestId("lane-agents-install");
+    await userEvent.click(button);
+    await waitFor(() => expect(api.lanes.agentsInstall).toHaveBeenCalledWith(1));
+    expect(await screen.findByTestId("lane-action-result")).toHaveTextContent("qc-local.md");
+  });
+
+  it("clicking Sync MCP calls the API and shows the result", async () => {
+    vi.mocked(api.lanes.mcpSync).mockResolvedValue({
+      servers: ["playwright"],
+      profilesSeeded: [],
+    });
+    render(<LaneCard lane={makeLane()} onAction={vi.fn()} />);
+    const button = await screen.findByTestId("lane-mcp-sync");
+    await userEvent.click(button);
+    await waitFor(() => expect(api.lanes.mcpSync).toHaveBeenCalledWith(1));
+    expect(await screen.findByTestId("lane-action-result")).toHaveTextContent("playwright");
+  });
+
+  it("clicking Check dev sync reports a clean result", async () => {
+    vi.mocked(api.lanes.syncBaseCheck).mockResolvedValue({
+      code: 0,
+      devDelta: ["a.txt", "b.txt"],
+      overlap: [],
+    });
+    render(<LaneCard lane={makeLane()} onAction={vi.fn()} />);
+    const button = await screen.findByTestId("lane-sync-check");
+    await userEvent.click(button);
+    await waitFor(() => expect(api.lanes.syncBaseCheck).toHaveBeenCalledWith(1));
+    expect(await screen.findByTestId("lane-action-result")).toHaveTextContent("2");
+  });
+
+  it("clicking Check dev sync reports a migration collision", async () => {
+    vi.mocked(api.lanes.syncBaseCheck).mockResolvedValue({
+      code: 5,
+      collisions: [{ file: "002_a.sql", collidesWith: "002_b.sql", suggestion: "003_a.sql" }],
+    });
+    render(<LaneCard lane={makeLane()} onAction={vi.fn()} />);
+    const button = await screen.findByTestId("lane-sync-check");
+    await userEvent.click(button);
+    expect(await screen.findByTestId("lane-action-result")).toHaveTextContent("003_a.sql");
+  });
+
+  it("hides all four additions when the lane has no profile", async () => {
+    vi.mocked(api.lanes.runtime).mockResolvedValue({ available: false });
+    render(<LaneCard lane={makeLane()} onAction={vi.fn()} />);
+    await waitFor(() => expect(api.lanes.runtime).toHaveBeenCalled());
+    expect(screen.queryByTestId("lane-agents-install")).toBeNull();
+    expect(screen.queryByTestId("lane-mcp-sync")).toBeNull();
+    expect(screen.queryByTestId("lane-sync-check")).toBeNull();
+    expect(screen.queryByTestId("lane-integration-tracker")).toBeNull();
+  });
+});