import { afterEach, describe, it, expect, vi } from "vitest";
import { render, screen, fireEvent, waitFor, act } from "@testing-library/react";
import { TaskCard, formatElapsedDurationDone, __test_areTaskCardPropsEqual } from "../TaskCard";
import type { ConfirmOptions } from "../../hooks/useConfirm";
import type { Task } from "@fusion/core";

// Mock lucide-react to avoid SVG rendering issues in test env
vi.mock("lucide-react", () => ({
  Link: () => null,
  GitBranch: () => null,
  Clock: () => null,
  Pencil: () => null,
  Layers: () => null,
  ChevronDown: () => null,
  Folder: () => null,
  GitPullRequest: () => null,
  CircleDot: () => null,
  Target: () => null,
  Bot: () => null,
  Trash2: () => null,
  RotateCw: () => null,
  Zap: () => <svg data-testid="icon-zap" />,
}));

vi.mock("../ProviderIcon", () => ({
  ProviderIcon: ({ provider }: { provider: string }) => <span data-testid={`provider-icon-${provider}`} />,
}));

const useTaskDiffStatsMock = vi.fn(() => ({ stats: null, loading: false }));
vi.mock("../../hooks/useTaskDiffStats", () => ({
  useTaskDiffStats: (...args: any[]) => useTaskDiffStatsMock(...args),
}));

const badgeUpdatesMock = new Map<string, any>();
const subscribeToBadgeMock = vi.fn();
const unsubscribeFromBadgeMock = vi.fn();
vi.mock("../../hooks/useBadgeWebSocket", () => ({
  useBadgeWebSocket: () => ({
    badgeUpdates: badgeUpdatesMock,
    isConnected: true,
    subscribeToBadge: subscribeToBadgeMock,
    unsubscribeFromBadge: unsubscribeFromBadgeMock,
  }),
}));

vi.mock("../../hooks/useBatchBadgeFetch", () => ({
  getFreshBatchData: vi.fn(() => null),
}));

// Mock the api module
vi.mock("../../api", () => ({
  fetchTaskDetail: vi.fn(),
  uploadAttachment: vi.fn(),
  fetchMission: vi.fn(),
  fetchAgent: vi.fn(),
}));

const mockConfirm = vi.fn<(options: ConfirmOptions) => Promise<boolean>>();
vi.mock("../../hooks/useConfirm", () => ({
  useConfirm: () => ({ confirm: mockConfirm }),
}));

import { uploadAttachment, fetchMission, fetchAgent } from "../../api";
import { loadAllAppCss, loadAllAppCssBaseOnly } from "../../test/cssFixture";

function makeTask(overrides: Partial<Task> = {}): Task {
  return {
    id: "FN-001",
    title: "Test task",
    column: "in-progress",
    status: undefined as any,
    steps: [],
    dependencies: [],
    description: "",
    ...overrides,
  } as Task;
}

const noop = () => {};

function mountCssForBadgeTests() {
  const style = document.createElement("style");
  style.textContent = loadAllAppCss();
  document.head.appendChild(style);
  document.documentElement.style.setProperty("--status-error-bg", "rgb(255, 230, 230)");
  document.documentElement.style.setProperty("--color-error-dark", "rgb(200, 0, 0)");
  document.documentElement.style.setProperty("--status-in-review-bg", "rgb(230, 255, 230)");
  document.documentElement.style.setProperty("--in-review", "rgb(0, 160, 0)");
  return () => {
    style.remove();
    document.documentElement.style.removeProperty("--status-error-bg");
    document.documentElement.style.removeProperty("--color-error-dark");
    document.documentElement.style.removeProperty("--status-in-review-bg");
    document.documentElement.style.removeProperty("--in-review");
  };
}

const highFanout = {
  totalCount: 7,
  activeTodoCount: 3,
  dependentIds: ["FN-002", "FN-003"],
  dependencyDependentIds: [],
  overlapBlockedDependentIds: ["FN-002", "FN-003"],
  overlapBlockedActiveCount: 3,
  overlapBlockedTodoCount: 3,
  staleBlockedByDependentIds: [],
  isHighFanout: true,
} as const;

afterEach(() => {
  vi.useRealTimers();
  useTaskDiffStatsMock.mockReturnValue({ stats: null, loading: false });
  badgeUpdatesMock.clear();
  subscribeToBadgeMock.mockReset();
  unsubscribeFromBadgeMock.mockReset();
});

describe("TaskCard", () => {
  it("uses githubIssueAction for tracked task delete", async () => {
    const onDeleteTask = vi.fn(async () => makeTask());
    mockConfirm
      .mockResolvedValueOnce(true)
      .mockResolvedValueOnce(true);

    render(
      <TaskCard
        task={makeTask({
          column: "triage",
          githubTracking: {
            enabled: true,
            issue: { owner: "owner", repo: "repo", number: 42, url: "https://github.com/owner/repo/issues/42", createdAt: "2026-01-01T00:00:00Z" },
          },
        } as any)}
        onOpenDetail={noop}
        addToast={noop}
        onDeleteTask={onDeleteTask}
      />,
    );

    await act(async () => {
      fireEvent.click(screen.getByLabelText("Delete task"));
    });

    await waitFor(() => {
      expect(onDeleteTask).toHaveBeenCalledWith("FN-001", { githubIssueAction: "close" });
    });
  });

  it("uses githubIssueAction=delete for tracked task delete", async () => {
    const onDeleteTask = vi.fn(async () => makeTask());
    mockConfirm
      .mockResolvedValueOnce(true)
      .mockResolvedValueOnce(false)
      .mockResolvedValueOnce(true);

    render(
      <TaskCard
        task={makeTask({
          column: "triage",
          githubTracking: {
            enabled: true,
            issue: { owner: "owner", repo: "repo", number: 42, url: "https://github.com/owner/repo/issues/42", createdAt: "2026-01-01T00:00:00Z" },
          },
        } as any)}
        onOpenDetail={noop}
        addToast={noop}
        onDeleteTask={onDeleteTask}
      />,
    );

    await act(async () => {
      fireEvent.click(screen.getByLabelText("Delete task"));
    });

    await waitFor(() => {
      expect(onDeleteTask).toHaveBeenCalledWith("FN-001", { githubIssueAction: "delete" });
    });
  });

  it("uses githubIssueAction=leave for tracked task delete", async () => {
    const onDeleteTask = vi.fn(async () => makeTask());
    mockConfirm
      .mockResolvedValueOnce(true)
      .mockResolvedValueOnce(false)
      .mockResolvedValueOnce(false);

    render(
      <TaskCard
        task={makeTask({
          column: "triage",
          githubTracking: {
            enabled: true,
            issue: { owner: "owner", repo: "repo", number: 42, url: "https://github.com/owner/repo/issues/42", createdAt: "2026-01-01T00:00:00Z" },
          },
        } as any)}
        onOpenDetail={noop}
        addToast={noop}
        onDeleteTask={onDeleteTask}
      />,
    );

    await act(async () => {
      fireEvent.click(screen.getByLabelText("Delete task"));
    });

    await waitFor(() => {
      expect(onDeleteTask).toHaveBeenCalledWith("FN-001", { githubIssueAction: "leave" });
    });
  });

  it("preserves githubIssueAction on dependency-conflict retry", async () => {
    const conflict = new Error("Cannot delete task FN-001: still referenced as a dependency by FN-002.") as Error & { status: number; details: { code: string; dependentIds: string[] } };
    conflict.status = 409;
    conflict.details = { code: "TASK_HAS_DEPENDENTS", dependentIds: ["FN-002"] };
    const onDeleteTask = vi.fn()
      .mockRejectedValueOnce(conflict)
      .mockResolvedValueOnce(makeTask());

    mockConfirm
      .mockResolvedValueOnce(true)
      .mockResolvedValueOnce(false)
      .mockResolvedValueOnce(true)
      .mockResolvedValueOnce(true);

    render(
      <TaskCard
        task={makeTask({
          column: "triage",
          githubTracking: {
            enabled: true,
            issue: { owner: "owner", repo: "repo", number: 42, url: "https://github.com/owner/repo/issues/42", createdAt: "2026-01-01T00:00:00Z" },
          },
        } as any)}
        onOpenDetail={noop}
        addToast={noop}
        onDeleteTask={onDeleteTask}
      />,
    );

    await act(async () => {
      fireEvent.click(screen.getByLabelText("Delete task"));
    });

    await waitFor(() => {
      expect(onDeleteTask).toHaveBeenNthCalledWith(2, "FN-001", { removeDependencyReferences: true, githubIssueAction: "delete" });
    });
  });

  it("keeps legacy delete options for untracked task", async () => {
    const onDeleteTask = vi.fn(async () => makeTask());
    mockConfirm.mockResolvedValueOnce(true);

    render(<TaskCard task={makeTask({ column: "triage" })} onOpenDetail={noop} addToast={noop} onDeleteTask={onDeleteTask} />);

    await act(async () => {
      fireEvent.click(screen.getByLabelText("Delete task"));
    });

    await waitFor(() => {
      expect(onDeleteTask).toHaveBeenCalledWith("FN-001");
    });
  });
  it("renders the card ID text", () => {
    render(<TaskCard task={makeTask()} onOpenDetail={noop} addToast={noop} />);
    expect(screen.getByText("FN-001")).toBeDefined();
  });

  it("keeps native card dragging enabled by default", () => {
    const { container } = render(<TaskCard task={makeTask()} onOpenDetail={noop} addToast={noop} />);
    const card = container.querySelector(".card") as HTMLElement;
    expect(card.getAttribute("draggable")).toBe("true");
  });

  it("disables native card dragging when disableDrag is true", () => {
    const { container } = render(<TaskCard task={makeTask()} onOpenDetail={noop} addToast={noop} disableDrag={true} />);
    const card = container.querySelector(".card") as HTMLElement;
    expect(card.getAttribute("draggable")).toBe("false");
  });

  it("clicking PR badge link does not open the task detail modal", () => {
    const onOpenDetail = vi.fn();
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          prInfo: {
            url: "https://github.com/owner/repo/pull/42",
            number: 42,
            status: "open",
            title: "PR",
            headBranch: "fusion/fn-001",
            baseBranch: "main",
            commentCount: 0,
          } as any,
        })}
        onOpenDetail={onOpenDetail}
        addToast={noop}
      />,
    );

    fireEvent.click(screen.getByRole("link", { name: "#42" }));
    expect(onOpenDetail).not.toHaveBeenCalled();
  });

  it("renders GitHub badge from live websocket data even when task payload has no badge fields", () => {
    badgeUpdatesMock.set("default:FN-001", {
      prInfo: {
        url: "https://github.com/owner/repo/pull/77",
        number: 77,
        status: "open",
        title: "Live PR",
        headBranch: "feature/live",
        baseBranch: "main",
        commentCount: 0,
      },
      timestamp: "2026-05-13T12:00:00.000Z",
    });

    render(
      <TaskCard
        task={makeTask({ column: "in-review", prInfo: undefined, issueInfo: undefined })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(subscribeToBadgeMock).toHaveBeenCalledWith("FN-001");
    expect(screen.getByRole("link", { name: "#77" })).toBeDefined();
  });

  it("clicking issue badge text does not open the task detail modal", () => {
    const onOpenDetail = vi.fn();
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          issueInfo: {
            url: "https://github.com/owner/repo/issues/123",
            number: 123,
            state: "open",
            title: "Issue",
          } as any,
        })}
        onOpenDetail={onOpenDetail}
        addToast={noop}
      />,
    );

    fireEvent.click(screen.getByText("#123"));
    expect(onOpenDetail).not.toHaveBeenCalled();
  });

  it("renders the status badge when task.status is set", () => {
    render(
      <TaskCard
        task={makeTask({ status: "executing" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );
    expect(screen.getByText("executing")).toBeDefined();
  });

  it("renders merge-remediation status as merge-active for in-review tasks", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ column: "in-review", status: "merging-fix" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("Merging fixes…")).toBeDefined();
    const badge = container.querySelector(".card-status-badge");
    expect(badge?.className).toContain("pulsing");
  });

  it("FN-4208 keeps failed in-review TaskCard badge on error colors", () => {
    const cleanupCss = mountCssForBadgeTests();
    try {
      const { container } = render(
        <TaskCard task={makeTask({ column: "in-review", status: "failed" as any, error: "boom" })} onOpenDetail={noop} addToast={noop} />,
      );

      const badge = container.querySelector(".card-status-badge") as HTMLElement;
      expect(badge.className).toContain("card-status-badge--in-review");
      expect(badge.className).toContain("failed");
      expect(getComputedStyle(badge).color).toBe("var(--color-error-dark)");
      expect(getComputedStyle(badge).color).not.toBe("var(--in-review)");
    } finally {
      cleanupCss();
    }
  });

  it("renders the status badge after the card ID in DOM order", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ status: "executing" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );
    const cardId = container.querySelector(".card-id")!;
    const badge = container.querySelector(".card-status-badge")!;
    expect(cardId).toBeDefined();
    expect(badge).toBeDefined();
    // Badge should be the next sibling of card-id
    expect(cardId.nextElementSibling).toBe(badge);
  });

  it("does not render a status badge when task.status is falsy", () => {
    const { container } = render(
      <TaskCard task={makeTask({ status: undefined as any })} onOpenDetail={noop} addToast={noop} />,
    );
    expect(container.querySelector(".card-status-badge")).toBeNull();
  });

  it("renders stalled badge with visible reason when stalledReview is set", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          status: "merging",
          stalledReview: {
            reason: "Re-enqueued for merge 3 times in the last 60 minutes without leaving in-review",
            heuristic: "reenqueue-churn",
            matchCount: 3,
            firstMatchAt: "2026-05-12T11:00:00.000Z",
            lastMatchAt: "2026-05-12T11:50:00.000Z",
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const stalledBadge = screen.getByText("Stalled");
    expect(stalledBadge.getAttribute("title")).toContain("Re-enqueued for merge 3 times");
    expect(screen.getByText("Re-enqueued for merge 3 times in the last 60 minutes without leaving in-review")).toBeDefined();
  });

  it("does not render stalled badge when stalledReview is undefined", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          status: "merging",
          stalledReview: undefined,
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.queryByText("Stalled")).toBeNull();
    expect(screen.queryByText(/Re-enqueued for merge/)).toBeNull();
  });

  it("renders retry-exhausted in-review stall badge with counter, code, and tooltip", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          status: "merging",
          mergeRetries: 3,
          inReviewStall: {
            code: "merge-retries-exhausted",
            reason: "Auto-merge retries exhausted",
            observedAt: "2026-05-13T00:00:00.000Z",
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = screen.getByText("Retries exhausted 3/3");
    expect(badge.getAttribute("data-stall-code")).toBe("merge-retries-exhausted");
    expect(badge.getAttribute("title")).toContain("Auto-merge retries exhausted");
  });

  it("renders merge-blocker in-review stall badge without retry counter", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          status: "failed",
          mergeRetries: 3,
          inReviewStall: {
            code: "merge-blocker",
            reason: "Merge blocked by pre-merge check",
            observedAt: "2026-05-13T00:00:00.000Z",
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("Merge blocked")).toBeDefined();
    expect(screen.queryByText(/\/3/)).toBeNull();
  });

  it("FN-4570: hides merge-blocker stall badge while merge is active", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          status: "merging",
          inReviewStall: {
            code: "merge-blocker",
            reason: "Merge blocked by pre-merge check",
            observedAt: "2026-05-13T00:00:00.000Z",
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("merging")).toBeDefined();
    expect(screen.queryByText("Merge blocked")).toBeNull();
  });

  it.each([
    {
      label: "paused in-review task",
      task: makeTask({
        column: "in-review",
        paused: true,
        status: "merging",
        inReviewStall: {
          code: "merge-retries-exhausted",
          reason: "Auto-merge retries exhausted",
          observedAt: "2026-05-13T00:00:00.000Z",
        },
      }),
    },
    {
      label: "in-review task without inReviewStall",
      task: makeTask({ column: "in-review", status: "merging", inReviewStall: undefined }),
    },
    {
      label: "non in-review task with fabricated signal",
      task: makeTask({
        column: "in-progress",
        status: "executing",
        inReviewStall: {
          code: "merge-retries-exhausted",
          reason: "Auto-merge retries exhausted",
          observedAt: "2026-05-13T00:00:00.000Z",
        },
      }),
    },
  ])("hides in-review stall badge for $label", ({ task }) => {
    render(<TaskCard task={task} onOpenDetail={noop} addToast={noop} />);
    expect(screen.queryByText("Retries exhausted")).toBeNull();
  });

  it("renders stale paused review badge for paused in-review signal", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          paused: true,
          stalePausedReview: {
            code: "stale-paused-review",
            reason: "Task has remained paused in review beyond threshold",
            observedAt: "2026-05-14T00:00:00.000Z",
            ageMs: 86_400_000,
            thresholdMs: 86_400_000,
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("Paused stall")).toBeDefined();
  });

  it("hides stale paused review badge when signal missing", () => {
    render(
      <TaskCard task={makeTask({ column: "in-review", paused: true, stalePausedReview: undefined })} onOpenDetail={noop} addToast={noop} />,
    );
    expect(screen.queryByText("Paused stall")).toBeNull();
  });

  it("hides stale paused review badge when task is not paused", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          paused: false,
          stalePausedReview: {
            code: "stale-paused-review",
            reason: "Task has remained paused in review beyond threshold",
            observedAt: "2026-05-14T00:00:00.000Z",
            ageMs: 86_400_000,
            thresholdMs: 86_400_000,
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );
    expect(screen.queryByText("Paused stall")).toBeNull();
  });

  it("renders warning task-age staleness badge", () => {
    render(
      <TaskCard
        task={makeTask({
          ageStaleness: {
            level: "warning",
            reason: "in-progress age exceeded warning threshold",
            observedAt: "2026-05-14T00:00:00.000Z",
            ageMs: 5 * 60 * 60_000,
            warningThresholdMs: 4 * 60 * 60_000,
            criticalThresholdMs: 24 * 60 * 60_000,
            column: "in-progress",
            paused: false,
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("Stale")).toBeDefined();
  });

  it("renders critical task-age staleness badge", () => {
    render(
      <TaskCard
        task={makeTask({
          ageStaleness: {
            level: "critical",
            reason: "in-review age exceeded critical threshold",
            observedAt: "2026-05-14T00:00:00.000Z",
            ageMs: 80 * 60 * 60_000,
            warningThresholdMs: 24 * 60 * 60_000,
            criticalThresholdMs: 72 * 60 * 60_000,
            column: "in-review",
            paused: true,
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("Stale (critical)")).toBeDefined();
  });

  it("hides task-age staleness badge when signal is absent", () => {
    render(<TaskCard task={makeTask({ ageStaleness: undefined })} onOpenDetail={noop} addToast={noop} />);
    expect(screen.queryByText("Stale")).toBeNull();
    expect(screen.queryByText("Stale (critical)")).toBeNull();
  });

  it("shows paused by agent label when pausedByAgentId is set", () => {
    render(
      <TaskCard task={makeTask({ paused: true, pausedByAgentId: "agent-1" })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(screen.getByText("paused by agent")).toBeDefined();
  });

  it("shows plain paused label when pausedByAgentId is not set", () => {
    render(
      <TaskCard task={makeTask({ paused: true })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(screen.getByText("paused")).toBeDefined();
    expect(screen.queryByText("paused by agent")).toBeNull();
  });

  it("renders todo userPaused tasks as paused", () => {
    const { container } = render(
      <TaskCard task={makeTask({ column: "todo", paused: undefined, userPaused: true })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(screen.getByText("paused")).toBeDefined();
    expect(container.querySelector(".card")?.className).toContain("paused");
  });

  it("does not show paused by agent copy for userPaused-only tasks", () => {
    render(
      <TaskCard task={makeTask({ column: "todo", paused: undefined, userPaused: true, pausedByAgentId: undefined })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(screen.getByText("paused")).toBeDefined();
    expect(screen.queryByText("paused by agent")).toBeNull();
  });

  it("renders decision-only badge when noCommitsExpected is true", () => {
    render(<TaskCard task={makeTask({ noCommitsExpected: true })} onOpenDetail={noop} addToast={noop} />);
    expect(screen.getByText("decision-only")).toBeTruthy();
  });

  it("hides decision-only badge when noCommitsExpected is false", () => {
    render(<TaskCard task={makeTask({ noCommitsExpected: false })} onOpenDetail={noop} addToast={noop} />);
    expect(screen.queryByText("decision-only")).toBeNull();
  });

  it("does not render fan-out badge when fanout is missing or zero", () => {
    const { container, rerender } = render(
      <TaskCard task={makeTask({ column: "todo" })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(container.querySelector(".card-fanout-badge")).toBeNull();

    rerender(
      <TaskCard
        task={makeTask({ column: "todo" })}
        fanout={{ totalCount: 0, activeTodoCount: 0, dependentIds: [], dependencyDependentIds: [], overlapBlockedDependentIds: [], overlapBlockedActiveCount: 0, overlapBlockedTodoCount: 0, staleBlockedByDependentIds: [], isHighFanout: false }}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-fanout-badge")).toBeNull();
  });

  it("renders overlap scope badge when overlapBlockedBy is set without blockedBy", () => {
    render(
      <TaskCard
        task={makeTask({ column: "todo", blockedBy: undefined, overlapBlockedBy: "FN-OVER" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("FN-OVER")).toBeInTheDocument();
  });

  it("does not render overlap scope badge when blockedBy and overlapBlockedBy are absent", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ column: "todo", blockedBy: undefined, overlapBlockedBy: undefined })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-scope-badge")).toBeNull();
  });

  it("renders fan-out badge with downstream count and tooltip", () => {
    render(
      <TaskCard
        task={makeTask({ column: "in-progress" })}
        fanout={{ totalCount: 7, activeTodoCount: 4, dependentIds: ["FN-002"], dependencyDependentIds: ["FN-002"], overlapBlockedDependentIds: [], overlapBlockedActiveCount: 0, overlapBlockedTodoCount: 0, staleBlockedByDependentIds: [], isHighFanout: false }}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = screen.getByText("Blocks").closest(".card-fanout-badge") as HTMLElement;
    expect(badge).not.toBeNull();
    expect(badge.textContent).toContain("Blocks 7");
    expect(badge.getAttribute("data-tooltip")).toContain("overlap blockedBy queue: 0 todo");
  });

  it("applies stale fan-out modifier when stale blockedBy dependents exist", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ column: "in-progress" })}
        fanout={{ totalCount: 3, activeTodoCount: 1, dependentIds: ["FN-003"], dependencyDependentIds: [], overlapBlockedDependentIds: ["FN-003"], overlapBlockedActiveCount: 1, overlapBlockedTodoCount: 1, staleBlockedByDependentIds: ["FN-003"], isHighFanout: false }}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-fanout-badge") as HTMLElement;
    expect(badge.className).toContain("card-fanout-badge--stale");
    expect(badge.textContent).toContain("(1 stale)");
  });

  it("renders overlap bottleneck badge without visible todo suffix while keeping tooltip context", () => {
    render(
      <TaskCard
        task={makeTask({ column: "in-progress" })}
        fanout={highFanout}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = screen.getByText("Overlap bottleneck").closest(".card-fanout-badge") as HTMLElement;
    expect(badge).not.toBeNull();
    expect(badge.textContent).toContain("Overlap bottleneck 7");
    expect(badge.textContent).not.toContain("todo)");
    expect(badge.getAttribute("data-tooltip")).toContain("overlap blockedBy queue: 3 todo");
  });

  it("escalates only threshold-crossing fan-out badges", () => {
    const { rerender } = render(
      <TaskCard
        task={makeTask({ column: "in-progress" })}
        fanout={{
          ...highFanout,
          totalCount: 8,
          activeTodoCount: 5,
          overlapBlockedTodoCount: 5,
          overlapBlockedActiveCount: 8,
          dependentIds: ["FN-003"],
          escalation: { blockerId: "FN-001", activeTodoCount: 5, totalActiveCount: 8, blockingAgeMs: 3_600_000 },
        }}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    let badge = screen.getByText("Escalated overlap").closest(".card-fanout-badge") as HTMLElement;
    expect(badge).not.toBeNull();
    expect(badge.textContent).toContain("Escalated");
    expect(badge.textContent).toContain("8");
    expect(badge.textContent).not.toContain("todo)");

    rerender(
      <TaskCard
        task={makeTask({ column: "in-progress" })}
        fanout={{ totalCount: 8, activeTodoCount: 4, dependentIds: ["FN-003"], dependencyDependentIds: ["FN-003"], overlapBlockedDependentIds: [], overlapBlockedActiveCount: 0, overlapBlockedTodoCount: 0, staleBlockedByDependentIds: [], isHighFanout: false }}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    badge = screen.getByText("Blocks").closest(".card-fanout-badge") as HTMLElement;
    expect(badge).not.toBeNull();
  });

  it("shows plain paused label when pausedByAgentId is not set", () => {
    render(
      <TaskCard task={makeTask({ paused: true })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(screen.getByText("paused")).toBeDefined();
    expect(screen.queryByText("paused by agent")).toBeNull();
  });

  it("hides default working branch and default base branch metadata", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ branch: "fusion/fn-001", baseBranch: "main" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-branch-row")).toBeNull();
  });

  it("hides auto-generated suffixed default working branches", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ branch: "fusion/fn-001-2", baseBranch: "main" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-branch-row")).toBeNull();
  });

  it("shows only custom working branch metadata when base branch is default", () => {
    render(
      <TaskCard
        task={makeTask({ branch: "feature/working-only", baseBranch: "main" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("Branch")).toBeDefined();
    expect(screen.getByText("feature/working-only")).toBeDefined();
    expect(screen.queryByText("Base")).toBeNull();
  });

  it("shows only non-default base branch metadata when working branch is default", () => {
    render(
      <TaskCard
        task={makeTask({ branch: "fusion/fn-001", baseBranch: "release/2026-05" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("Base")).toBeDefined();
    expect(screen.getByText("release/2026-05")).toBeDefined();
    expect(screen.queryByText("Branch")).toBeNull();
  });

  it("renders merge target from task.baseBranch, not prInfo.baseBranch metadata", () => {
    render(
      <TaskCard
        task={makeTask({
          branch: "fusion/fn-001",
          baseBranch: "release/task-target",
          prInfo: {
            url: "https://github.com/runfusion/fusion/pull/10",
            number: 10,
            status: "open",
            title: "PR title",
            headBranch: "feature/pr-head",
            baseBranch: "main",
            commentCount: 0,
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("Base")).toBeDefined();
    expect(screen.getByText("release/task-target")).toBeDefined();
    expect(screen.queryByText("main")).toBeNull();
  });

  it("shows both chips when branch and base branch are both non-default", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ branch: "feature/fn-3423-card-branches", baseBranch: "develop" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const branchRow = container.querySelector(".card-branch-row");
    expect(branchRow).not.toBeNull();
    expect(screen.getByText("Branch")).toBeDefined();
    expect(screen.getByText("feature/fn-3423-card-branches")).toBeDefined();
    expect(screen.getByText("Base")).toBeDefined();
    expect(screen.getByText("develop")).toBeDefined();
  });

  it("keeps long non-default branch names readable via text and title semantics", () => {
    const longBranch = "feature/fn-3423-display-very-long-working-branch-name-for-card-metadata";
    const { container } = render(
      <TaskCard
        task={makeTask({ branch: longBranch, baseBranch: "main" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const branchChip = container.querySelector(".card-branch-chip");
    expect(branchChip?.getAttribute("title")).toBe(longBranch);
    expect(screen.getByText(longBranch)).toBeDefined();
  });

  it("renders fast-mode indicator only when executionMode is fast", () => {
    const { container, rerender } = render(
      <TaskCard task={makeTask({ executionMode: "fast" })} onOpenDetail={noop} addToast={noop} />,
    );

    const fastBadge = container.querySelector(".card-execution-mode-badge");
    expect(fastBadge).not.toBeNull();
    expect(screen.getByTestId("icon-zap")).toBeDefined();
    expect(fastBadge?.getAttribute("aria-label")).toBe("Fast mode");

    rerender(
      <TaskCard task={makeTask({ executionMode: "standard" })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(container.querySelector(".card-execution-mode-badge")).toBeNull();
  });

  it("updates fast-mode indicator when executionMode changes", () => {
    const { container, rerender } = render(
      <TaskCard task={makeTask({ executionMode: "standard" })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(container.querySelector(".card-execution-mode-badge")).toBeNull();

    rerender(
      <TaskCard task={makeTask({ executionMode: "fast" })} onOpenDetail={noop} addToast={noop} />,
    );

    expect(container.querySelector(".card-execution-mode-badge")).not.toBeNull();
    expect(screen.getByTestId("icon-zap")).toBeDefined();
  });

  describe("retry button on failed tasks", () => {
    it("renders when task is failed and onRetryTask is provided", () => {
      const onRetryTask = vi.fn(async () => ({}) as Task);
      render(
        <TaskCard
          task={makeTask({ column: "todo", status: "failed", error: "Executor crashed" })}
          onOpenDetail={noop}
          addToast={noop}
          onRetryTask={onRetryTask}
        />,
      );

      expect(screen.getByRole("button", { name: "Retry" })).toBeDefined();
    });

    it("does not render for non-failed tasks", () => {
      const onRetryTask = vi.fn(async () => ({}) as Task);
      render(
        <TaskCard task={makeTask({ column: "todo", status: "done", error: "Executor crashed" })} onOpenDetail={noop} addToast={noop} onRetryTask={onRetryTask} />,
      );

      expect(screen.queryByRole("button", { name: "Retry" })).toBeNull();
    });

    it("calls onRetryTask with task id", async () => {
      const onRetryTask = vi.fn(async () => ({}) as Task);
      render(
        <TaskCard task={makeTask({ column: "todo", status: "failed", error: "Executor crashed" })} onOpenDetail={noop} addToast={noop} onRetryTask={onRetryTask} />,
      );

      fireEvent.click(screen.getByRole("button", { name: "Retry" }));
      await waitFor(() => expect(onRetryTask).toHaveBeenCalledWith("FN-001"));
    });

    it("shows loading and disabled state while retry is in progress", async () => {
      let resolveRetry: ((value: Task) => void) | null = null;
      const onRetryTask = vi.fn(() => new Promise<Task>((resolve) => { resolveRetry = resolve; }));

      render(
        <TaskCard task={makeTask({ column: "todo", status: "failed", error: "Executor crashed" })} onOpenDetail={noop} addToast={noop} onRetryTask={onRetryTask} />,
      );

      const button = screen.getByRole("button", { name: "Retry" }) as HTMLButtonElement;
      fireEvent.click(button);

      expect(screen.getByRole("button", { name: "Retrying…" })).toBeDefined();
      expect(button.disabled).toBe(true);

      await act(async () => {
        resolveRetry?.({} as Task);
      });

      await waitFor(() => expect(screen.getByRole("button", { name: "Retry" })).toBeDefined());
    });

    it("shows toast when retry fails", async () => {
      const addToast = vi.fn();
      const onRetryTask = vi.fn(async () => {
        throw new Error("network down");
      });

      render(
        <TaskCard task={makeTask({ column: "todo", status: "failed", error: "Executor crashed" })} onOpenDetail={noop} addToast={addToast} onRetryTask={onRetryTask} />,
      );

      fireEvent.click(screen.getByRole("button", { name: "Retry" }));

      await waitFor(() => {
        expect(addToast).toHaveBeenCalledWith("Failed to retry FN-001: network down", "error");
      });
    });
  });

  it("renders unified progress counts for task steps + workflow checks", () => {
    render(
      <TaskCard
        task={makeTask({
          steps: [
            { name: "Step 0", status: "done" },
            { name: "Step 1", status: "pending" },
          ],
          enabledWorkflowSteps: ["WS-001", "WS-002", "WS-003"],
          workflowStepResults: [
            {
              workflowStepId: "WS-001",
              workflowStepName: "Browser Verification",
              status: "passed",
            },
            {
              workflowStepId: "WS-002",
              workflowStepName: "Frontend UX Design",
              status: "failed",
            },
          ],
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("2/5")).toBeDefined();
    expect(screen.getByText("5 steps")).toBeDefined();
  });

  it("uses singular step label when unified progress total is one", () => {
    render(
      <TaskCard
        task={makeTask({
          steps: [{ name: "Step 0", status: "done" }],
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByText("1 step")).toBeDefined();
    expect(screen.queryByText("1 steps")).toBeNull();
  });

  it("renders workflow checks after normal steps with mapped statuses and phase badges", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          steps: [
            { name: "Step 0", status: "done" },
            { name: "Step 1", status: "failed" as any },
          ],
          enabledWorkflowSteps: ["WS-001", "WS-002", "WS-003"],
          workflowStepResults: [
            {
              workflowStepId: "WS-001",
              workflowStepName: "Browser Verification",
              status: "passed",
            },
            {
              workflowStepId: "WS-002",
              workflowStepName: "Frontend UX Design",
              status: "failed",
              phase: "post-merge",
            },
          ],
        })}
        workflowStepNameLookup={new Map([["WS-003", "Accessibility Audit"]])}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const stepNames = Array.from(container.querySelectorAll(".card-step-name")).map((el) => el.textContent);
    expect(stepNames).toEqual([
      "Step 0",
      "Step 1",
      "Browser Verification",
      "Frontend UX Design",
      "Accessibility Audit",
    ]);

    const dots = container.querySelectorAll(".card-step-dot");
    expect(dots[1]?.className).toContain("card-step-dot--failed");
    expect(dots[1]?.className).not.toContain("card-step-dot--workflow-failed");

    expect(dots[2]?.className).toContain("card-step-dot--done");
    expect(dots[2]?.className).not.toContain("card-step-dot--workflow-failed");

    expect(dots[3]?.className).toContain("card-step-dot--failed");
    expect(dots[3]?.className).toContain("card-step-dot--workflow-failed");

    expect(dots[4]?.className).toContain("card-step-dot--pending");
    expect(dots[4]?.className).not.toContain("card-step-dot--workflow-failed");

    const workflowBadgeElements = container.querySelectorAll(".card-step-workflow-badge");
    const workflowBadges = Array.from(workflowBadgeElements).map((el) => el.textContent);
    expect(workflowBadges).toEqual(["workflow", "workflow", "workflow"]);

    expect(workflowBadgeElements[0]?.className).toContain("card-step-workflow-badge--pre-merge");
    expect(workflowBadgeElements[1]?.className).toContain("card-step-workflow-badge--post-merge");
    expect(workflowBadgeElements[2]?.className).toContain("card-step-workflow-badge--pre-merge");

    workflowBadgeElements.forEach((badge) => {
      expect(badge.getAttribute("title")).toBe("Workflow check");
    });
  });

  it("falls back to workflow result name, then raw ID when lookup names are unavailable", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          enabledWorkflowSteps: ["WS-002", "WS-003"],
          workflowStepResults: [
            {
              workflowStepId: "WS-002",
              workflowStepName: "Fallback from result",
              status: "passed",
            },
          ],
        })}
        workflowStepNameLookup={new Map([["WS-002", "   "]])}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const stepNames = Array.from(container.querySelectorAll(".card-step-name")).map((el) => el.textContent);
    expect(stepNames).toEqual(["Fallback from result", "WS-003"]);
  });

  it("shows drop indicator on file dragover and removes on dragleave", () => {
    const { container } = render(
      <TaskCard task={makeTask()} onOpenDetail={noop} addToast={noop} />,
    );
    const card = container.querySelector(".card")!;

    // Simulate file dragover
    fireEvent.dragOver(card, {
      dataTransfer: { types: ["Files"], dropEffect: "none" },
    });
    expect(card.classList.contains("file-drop-target")).toBe(true);

    // Simulate dragleave
    fireEvent.dragLeave(card, {
      dataTransfer: { types: ["Files"] },
    });
    expect(card.classList.contains("file-drop-target")).toBe(false);
  });

  it("does not show drop indicator for non-file drag", () => {
    const { container } = render(
      <TaskCard task={makeTask()} onOpenDetail={noop} addToast={noop} />,
    );
    const card = container.querySelector(".card")!;

    // Simulate card dragover (not files)
    fireEvent.dragOver(card, {
      dataTransfer: { types: ["text/plain"], dropEffect: "none" },
    });
    expect(card.classList.contains("file-drop-target")).toBe(false);
  });

  it("calls uploadAttachment on file drop", async () => {
    const mockUpload = vi.mocked(uploadAttachment);
    mockUpload.mockResolvedValue({
      filename: "abc-test.png",
      originalName: "test.png",
      mimeType: "image/png",
      size: 1024,
      createdAt: new Date().toISOString(),
    });
    const addToast = vi.fn();

    const { container } = render(
      <TaskCard task={makeTask()} onOpenDetail={noop} addToast={addToast} />,
    );
    const card = container.querySelector(".card")!;

    const file = new File(["content"], "test.png", { type: "image/png" });
    fireEvent.drop(card, {
      dataTransfer: { types: ["Files"], files: [file] },
    });

    await waitFor(() => {
      expect(mockUpload).toHaveBeenCalledWith("FN-001", file, undefined);
      expect(addToast).toHaveBeenCalledWith(
        expect.stringContaining("Attached test.png"),
        "success",
      );
    });
  });

  it("shows in-review files-changed chip from modifiedFiles fallback when no worktree diff is available", () => {
    const onOpenDetailWithTab = vi.fn();
    const task = makeTask({
      column: "in-review",
      worktree: undefined,
      modifiedFiles: ["packages/dashboard/app/App.tsx", "packages/dashboard/app/styles.css"],
    });

    render(
      <TaskCard
        task={task}
        onOpenDetail={noop}
        addToast={noop}
        onOpenDetailWithTab={onOpenDetailWithTab}
      />,
    );

    const filesChangedButton = screen.getByRole("button", { name: "2 files changed" });
    expect(filesChangedButton).toBeDefined();
    expect((filesChangedButton as HTMLButtonElement).disabled).toBe(false);

    fireEvent.click(filesChangedButton);
    expect(onOpenDetailWithTab).toHaveBeenCalledWith(task, "changes");
  });

  it("shows in-progress files-changed chip from modifiedFiles fallback when no live diff is available", () => {
    const onOpenDetailWithTab = vi.fn();
    const task = makeTask({
      column: "in-progress",
      worktree: undefined,
      modifiedFiles: ["packages/core/src/store.ts", "packages/core/src/types.ts"],
    });

    render(
      <TaskCard
        task={task}
        onOpenDetail={noop}
        addToast={noop}
        onOpenDetailWithTab={onOpenDetailWithTab}
      />,
    );

    const filesChangedButton = screen.getByRole("button", { name: "2 files changed" });
    expect(filesChangedButton).toBeDefined();
    expect((filesChangedButton as HTMLButtonElement).disabled).toBe(false);

    fireEvent.click(filesChangedButton);
    expect(onOpenDetailWithTab).toHaveBeenCalledWith(task, "changes");
  });

  it("shows error toast when upload fails", async () => {
    const mockUpload = vi.mocked(uploadAttachment);
    mockUpload.mockRejectedValue(new Error("Upload failed"));
    const addToast = vi.fn();

    const { container } = render(
      <TaskCard task={makeTask()} onOpenDetail={noop} addToast={addToast} />,
    );
    const card = container.querySelector(".card")!;

    const file = new File(["content"], "bad.png", { type: "image/png" });
    fireEvent.drop(card, {
      dataTransfer: { types: ["Files"], files: [file] },
    });

    await waitFor(() => {
      expect(addToast).toHaveBeenCalledWith(
        expect.stringContaining("Failed to attach bad.png"),
        "error",
      );
    });
  });

  // Size badge positioning regression tests (KB-197)
  it("renders size badge for sized tasks", () => {
    const { container } = render(
      <TaskCard task={makeTask({ size: "S" })} onOpenDetail={noop} addToast={noop} />,
    );
    expect(container.querySelector(".card-size-badge")).not.toBeNull();
    expect(screen.getByText("S")).toBeDefined();
  });

  it("does not render size badge when task has no size", () => {
    const { container } = render(
      <TaskCard task={makeTask({ size: undefined })} onOpenDetail={noop} addToast={noop} />,
    );
    expect(container.querySelector(".card-size-badge")).toBeNull();
  });

  it("renders all three size values with correct CSS classes", () => {
    const sizes: Array<"S" | "M" | "L"> = ["S", "M", "L"];
    const expectedClasses = ["size-s", "size-m", "size-l"];

    sizes.forEach((size, index) => {
      const { container } = render(
        <TaskCard task={makeTask({ size })} onOpenDetail={noop} addToast={noop} />,
      );
      const badge = container.querySelector(".card-size-badge");
      expect(badge).not.toBeNull();
      expect(badge?.classList.contains(expectedClasses[index])).toBe(true);
      // Clean up for next iteration
      container.remove();
    });
  });

  it("places size badge inside card-header-actions container", () => {
    const { container } = render(
      <TaskCard task={makeTask({ size: "M" })} onOpenDetail={noop} addToast={noop} />,
    );
    const actionsContainer = container.querySelector(".card-header-actions");
    const sizeBadge = container.querySelector(".card-size-badge");
    
    expect(actionsContainer).not.toBeNull();
    expect(sizeBadge).not.toBeNull();
    expect(actionsContainer?.contains(sizeBadge)).toBe(true);
  });

  it("places card-header-actions after card-id in DOM order", () => {
    const { container } = render(
      <TaskCard task={makeTask({ size: "S" })} onOpenDetail={noop} addToast={noop} />,
    );
    const cardId = container.querySelector(".card-id")!;
    const actionsContainer = container.querySelector(".card-header-actions")!;
    
    expect(cardId).not.toBeNull();
    expect(actionsContainer).not.toBeNull();
    // The actions container should come after card-id
    expect(
      cardId.compareDocumentPosition(actionsContainer) & Node.DOCUMENT_POSITION_FOLLOWING
    ).toBeTruthy();
  });

  it("renders edit button inside card-header-actions for editable columns", () => {
    const { container } = render(
      <TaskCard 
        task={makeTask({ column: "todo", size: "S" })} 
        onOpenDetail={noop} 
        addToast={noop}
        onUpdateTask={async () => makeTask()}
      />,
    );
    const actionsContainer = container.querySelector(".card-header-actions");
    const editBtn = container.querySelector(".card-edit-btn");
    
    expect(actionsContainer).not.toBeNull();
    expect(editBtn).not.toBeNull();
    expect(actionsContainer?.contains(editBtn)).toBe(true);
  });

  it("renders archive button inside card-header-actions for done column", () => {
    const { container } = render(
      <TaskCard 
        task={makeTask({ column: "done", size: "L" })} 
        onOpenDetail={noop} 
        addToast={noop}
        onArchiveTask={async () => makeTask()}
      />,
    );
    const actionsContainer = container.querySelector(".card-header-actions");
    const archiveBtn = container.querySelector(".card-archive-btn");
    
    expect(actionsContainer).not.toBeNull();
    expect(archiveBtn).not.toBeNull();
    expect(actionsContainer?.contains(archiveBtn)).toBe(true);
  });

  it("renders in-review Move control inline in card-meta when meta row is visible", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ column: "in-review", blockedBy: "FN-777" })}
        onOpenDetail={noop}
        addToast={noop}
        onMoveTask={vi.fn()}
      />,
    );

    const moveButton = screen.getByRole("button", { name: "Move task" });
    const metaRow = container.querySelector(".card-meta");
    const bottomRow = container.querySelector(".card-bottom-row");

    expect(metaRow).not.toBeNull();
    expect(metaRow?.contains(moveButton)).toBe(true);
    expect(moveButton.closest(".card-meta")).not.toBeNull();
    expect(bottomRow).toBeNull();
  });

  it("keeps in-review Move control in card-bottom-row when meta row is not visible", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ column: "in-review", dependencies: [], blockedBy: undefined, overlapBlockedBy: undefined, status: undefined as any })}
        onOpenDetail={noop}
        addToast={noop}
        onMoveTask={vi.fn()}
      />,
    );

    const moveButton = screen.getByRole("button", { name: "Move task" });
    const bottomRow = container.querySelector(".card-bottom-row");

    expect(moveButton.closest(".card-bottom-right-row")).not.toBeNull();
    expect(bottomRow).not.toBeNull();
    expect(bottomRow?.contains(moveButton)).toBe(true);
    expect(moveButton.closest(".card-meta")).toBeNull();
  });

  it.each([
    { name: "inline meta-row variant", task: makeTask({ column: "in-review", blockedBy: "FN-777" }) },
    { name: "fallback bottom-row variant", task: makeTask({ column: "in-review", dependencies: [], blockedBy: undefined, overlapBlockedBy: undefined, status: undefined as any }) },
  ])("keeps Move dropdown behavior for $name", ({ task }) => {
    const onMoveTask = vi.fn();
    render(
      <TaskCard
        task={task}
        onOpenDetail={noop}
        addToast={noop}
        onMoveTask={onMoveTask}
      />,
    );

    fireEvent.click(screen.getByRole("button", { name: "Move task" }));

    expect(screen.getAllByRole("menuitem").length).toBeGreaterThan(0);

    fireEvent.click(screen.getByRole("menuitem", { name: "Done (no merge)" }));

    expect(onMoveTask).toHaveBeenCalledWith("FN-001", "done", undefined);
  });

  it("FN-4540 keeps in-progress Send back control in card-header-actions", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({ column: "in-progress" })}
        onOpenDetail={noop}
        addToast={noop}
        onMoveTask={vi.fn()}
      />,
    );

    const sendBackButton = screen.getByRole("button", { name: "Send back" });
    const actionsContainer = container.querySelector(".card-header-actions");

    expect(actionsContainer).not.toBeNull();
    expect(actionsContainer?.contains(sendBackButton)).toBe(true);
  });

  it("shows timer chip for in-progress cards summing workflow runtime + timed events", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-progress",
          workflowStepResults: [
            {
              workflowStepId: "step-1",
              workflowStepName: "Plan",
              phase: "pre-merge" as const,
              status: "passed" as const,
              startedAt: "2026-04-25T12:00:00.000Z",
              completedAt: "2026-04-25T12:08:00.000Z",
            },
          ],
          log: [
            {
              timestamp: "2026-04-25T12:09:00.000Z",
              action: "[timing] llm_call in 240000ms",
              outcome: "",
            } as unknown as Task["log"][number],
          ],
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer).not.toBeNull();
    // 8m workflow + 4m timed = 12m
    expect(timer?.textContent).toContain("12m");
    expect(timer?.getAttribute("title")).toContain("In progress 12m");
  });

  it("updates the in-progress timer when timedExecutionMs changes", () => {
    const { container, rerender } = render(
      <TaskCard
        task={makeTask({
          column: "in-progress",
          timedExecutionMs: 60_000,
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-time-indicator")?.textContent).toContain("1m");

    rerender(
      <TaskCard
        task={makeTask({
          column: "in-progress",
          timedExecutionMs: 120_000,
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-time-indicator")?.textContent).toContain("2m");
  });

  it("shows timer chip for done cards summing workflow runtime + timed events", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "done",
          columnMovedAt: "2026-04-25T15:00:00.000Z",
          updatedAt: "2026-04-25T15:00:00.000Z",
          createdAt: "2026-04-25T13:00:00.000Z",
          workflowStepResults: [
            {
              workflowStepId: "step-1",
              workflowStepName: "Plan",
              phase: "pre-merge" as const,
              status: "passed" as const,
              startedAt: "2026-04-25T13:00:00.000Z",
              completedAt: "2026-04-25T14:00:00.000Z",
            },
          ],
          log: [
            {
              timestamp: "2026-04-25T14:30:00.000Z",
              action: "[timing] llm_call in 3600000ms",
              outcome: "",
            } as unknown as Task["log"][number],
          ],
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer).not.toBeNull();
    // 1h workflow + 1h timed = 2h
    expect(timer?.textContent).toContain("2h");
    expect(timer?.getAttribute("title")).toContain("Execution time 2h");
    expect(timer?.getAttribute("title")).toContain("Completed");
  });

  it("renders GitHub provenance marker for github_import tasks", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "github_import",
          sourceMetadata: { issueUrl: "https://github.com/owner/repo/issues/42" },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const footerRow = container.querySelector(".card-footer-row");
    const provenance = container.querySelector(".card-source-provenance");

    expect(footerRow).not.toBeNull();
    expect(provenance).not.toBeNull();
    expect(provenance?.getAttribute("title")).toContain("https://github.com/owner/repo/issues/42");
    expect(screen.getByTestId("provider-icon-github")).toBeDefined();
  });

  it("does not render GitHub provenance marker for non-imported tasks", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-source-provenance")).toBeNull();
    expect(screen.queryByTestId("provider-icon-github")).toBeNull();
  });

  it("renders a GitHub tracking link for tracked issues on non-imported tasks", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const link = screen.getByRole("link", { name: "Linked GitHub issue #42" });
    const bottomRightRow = container.querySelector(".card-bottom-right-row");
    const footerRow = container.querySelector(".card-footer-row");
    expect(link.getAttribute("href")).toBe("https://github.com/owner/repo/issues/42");
    expect(link.getAttribute("title")).toBe("Linked GitHub issue: owner/repo#42");
    expect(link).toHaveClass("card-github-tracking-chip", "card-github-tracking-link");
    expect(link).toHaveTextContent("#42");
    expect(footerRow).not.toBeNull();
    expect(footerRow?.contains(link)).toBe(true);
    expect(bottomRightRow).toBeNull();
    expect(screen.getByTestId("provider-icon-github")).toBeDefined();
  });

  it("renders the GitHub tracking link in the unified footer row above queued metadata", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          status: "queued",
          sourceType: "dashboard_ui",
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const link = screen.getByRole("link", { name: "Linked GitHub issue #42" });
    const footerRow = container.querySelector(".card-footer-row");
    const queuedBadge = container.querySelector(".queued-badge");
    expect(footerRow).not.toBeNull();
    expect(footerRow?.contains(link)).toBe(true);
    expect(container.querySelector(".card-bottom-right-row")).toBeNull();
    expect(queuedBadge).not.toBeNull();
    expect(queuedBadge?.compareDocumentPosition(footerRow as Node) & Node.DOCUMENT_POSITION_PRECEDING).toBeTruthy();
  });

  it("renders tracking, retry, and timer chips in the same footer row", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          sourceType: "dashboard_ui",
          retrySummary: { total: 3 } as any,
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
          executionStartedAt: "2026-04-25T12:00:00.000Z",
          updatedAt: "2026-04-25T12:12:00.000Z",
        })}
        onOpenDetail={noop}
        addToast={noop}
        onOpenDetailWithTab={vi.fn()}
      />,
    );

    const footerRow = container.querySelector(".card-footer-row");
    const trackingLink = container.querySelector(".card-github-tracking-chip");
    const retryChip = container.querySelector(".card-retry-badge");
    const timerChip = container.querySelector(".card-time-indicator");

    expect(footerRow).not.toBeNull();
    expect(footerRow?.contains(trackingLink)).toBe(true);
    expect(footerRow?.contains(retryChip)).toBe(true);
    expect(footerRow?.contains(timerChip)).toBe(true);
    expect(container.querySelector(".card-bottom-right-row")).toBeNull();
  });

  it("keeps the GitHub tracking link keyboard focusable", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const link = screen.getByRole("link", { name: "Linked GitHub issue #42" });
    expect(link.tabIndex).not.toBe(-1);
    link.focus();
    expect(document.activeElement).toBe(link);
  });

  it("renders safe external-link attributes for the GitHub tracking link", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const link = screen.getByRole("link", { name: "Linked GitHub issue #42" });
    expect(link.getAttribute("target")).toBe("_blank");
    expect(link.getAttribute("rel")).toContain("noopener");
    expect(link.getAttribute("rel")).toContain("noreferrer");
  });

  it("keeps GitHub tracking chip interaction-affordance CSS contract", () => {
    const css = loadAllAppCssBaseOnly();

    expect(css).toMatch(/\.card-time-indicator\s*,\s*\.card-github-tracking-chip\s*,\s*\.card-retry-badge\s*\{[^}]*display:\s*inline-flex;[^}]*font-family:\s*var\(--font-mono\);[^}]*\}/);
    expect(css).toContain(".card-github-tracking-chip:hover");
    expect(css).toMatch(/\.card-github-tracking-chip:focus-visible\s*\{[^}]*--focus-ring-strong/);
    expect(css).toMatch(/\.card-time-indicator\s*,\s*\.card-github-tracking-chip\s*,\s*\.card-retry-badge\s*\{[^}]*padding:\s*var\(--space-xs\)\s+var\(--space-sm\);[^}]*height:\s*var\(--card-chip-height\);[^}]*border-radius:\s*var\(--radius-pill\);[^}]*font-size:\s*0\.6875rem;[^}]*line-height:\s*1;[^}]*\}/);
    expect(css).toMatch(/\.card-github-tracking-chip\s+\.provider-icon\s+svg\s*\{[^}]*width:\s*12px;[^}]*height:\s*12px;[^}]*\}/);

    render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const link = screen.getByRole("link", { name: "Linked GitHub issue #42" });
    const chipStyle = getComputedStyle(link);
    expect(chipStyle.display).toBe("inline-flex");
    expect(chipStyle.whiteSpace).toBe("nowrap");
  });

  it("FN-4287: keeps GitHub provenance indicators grouped on the right edge", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "github_import",
          sourceMetadata: { issueUrl: "https://github.com/owner/repo/issues/42" },
          githubTracking: {
            issue: {
              owner: "other",
              repo: "tracking",
              number: 99,
              url: "https://github.com/other/tracking/issues/99",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const footerRow = container.querySelector(".card-footer-row");
    const footerProvenance = container.querySelectorAll(".card-footer-row .card-source-provenance");
    const trackingLink = container.querySelector(".card-github-tracking-link");

    expect(footerRow).not.toBeNull();
    expect(footerProvenance).toHaveLength(1);
    expect(trackingLink).not.toBeNull();

    const css = loadAllAppCssBaseOnly();
    expect(css).toMatch(/\.card-footer-row\s*>\s*\.card-source-provenance:first-of-type\s*\{[^}]*margin-left:\s*auto;[^}]*\}/);
    expect(css).toMatch(/\.card-source-provenance\s*\+\s*\.card-source-provenance\s*\{[^}]*margin-left:\s*0;[^}]*\}/);
    const provenanceRule = css.match(/\.card-source-provenance\s*\{[^}]*\}/)?.[0] ?? "";
    expect(provenanceRule).not.toMatch(/margin-left\s*:\s*auto/);
  });

  describe("FN-4607 TaskCard GitHub badge right-alignment", () => {
    it("keeps source provenance and tracking chip grouped in footer order", () => {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "todo",
            sourceType: "github_import",
            sourceMetadata: { issueUrl: "https://github.com/owner/repo/issues/42" },
            githubTracking: {
              issue: {
                owner: "other",
                repo: "tracking",
                number: 99,
                url: "https://github.com/other/tracking/issues/99",
                createdAt: "2026-05-12T00:00:00.000Z",
              },
            },
          })}
          onOpenDetail={noop}
          addToast={noop}
        />,
      );

      const footerRow = container.querySelector(".card-footer-row");
      const sourceBadge = container.querySelector(".card-footer-row > .card-source-provenance");
      const trackingChip = container.querySelector(".card-footer-row > .card-github-tracking-chip");
      expect(footerRow).not.toBeNull();
      expect(sourceBadge).not.toBeNull();
      expect(trackingChip).not.toBeNull();
      expect((sourceBadge as Element).nextElementSibling).toBe(trackingChip);

      const css = loadAllAppCssBaseOnly();
      expect(css).toMatch(/\.card-footer-row\s*>\s*\.card-source-provenance:first-of-type\s*\{[^}]*margin-left:\s*auto;[^}]*\}/);
      expect(css).toMatch(/\.card-footer-row\s*>\s*\.card-source-provenance\s*\+\s*\.card-github-tracking-chip:first-of-type\s*\{[^}]*margin-left:\s*0;[^}]*\}/);
    });

    it("applies right-alignment rule when only tracking chip is rendered", () => {
      const css = loadAllAppCssBaseOnly();
      expect(css).toMatch(/\.card-footer-row\s*>\s*\.card-github-tracking-chip:first-of-type\s*\{[^}]*margin-left:\s*auto;[^}]*\}/);

      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "todo",
            sourceType: "dashboard_ui",
            githubTracking: {
              issue: {
                owner: "owner",
                repo: "repo",
                number: 42,
                url: "https://github.com/owner/repo/issues/42",
                createdAt: "2026-05-12T00:00:00.000Z",
              },
            },
          })}
          onOpenDetail={noop}
          addToast={noop}
        />,
      );

      const footerRow = container.querySelector(".card-footer-row");
      const trackingChip = container.querySelector(".card-footer-row > .card-github-tracking-chip");
      expect(footerRow).not.toBeNull();
      expect(trackingChip).not.toBeNull();
      expect(container.querySelector(".card-footer-row > .card-source-provenance")).toBeNull();
    });

    it("keeps github badges before retry and time chips", () => {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "in-review",
            sourceType: "github_import",
            sourceMetadata: { issueUrl: "https://github.com/owner/repo/issues/42" },
            retrySummary: { total: 3 } as any,
            githubTracking: {
              issue: {
                owner: "other",
                repo: "tracking",
                number: 99,
                url: "https://github.com/other/tracking/issues/99",
                createdAt: "2026-05-12T00:00:00.000Z",
              },
            },
            executionStartedAt: "2026-04-25T12:00:00.000Z",
            updatedAt: "2026-04-25T12:12:00.000Z",
          })}
          onOpenDetail={noop}
          addToast={noop}
          onOpenDetailWithTab={vi.fn()}
        />,
      );

      const footerRow = container.querySelector(".card-footer-row");
      expect(footerRow).not.toBeNull();

      const orderedSelectors = [
        ".card-source-provenance",
        ".card-github-tracking-chip",
        ".card-retry-badge",
        ".card-time-indicator",
      ];
      const orderedNodes = orderedSelectors.map((selector) => footerRow?.querySelector(selector));
      orderedNodes.forEach((node) => expect(node).not.toBeNull());

      const elementChildren = Array.from((footerRow as Element).children);
      const orderedIndexes = orderedNodes.map((node) => elementChildren.indexOf(node as Element));
      expect(orderedIndexes[0]).toBeLessThan(orderedIndexes[1]);
      expect(orderedIndexes[1]).toBeLessThan(orderedIndexes[2]);
      expect(orderedIndexes[2]).toBeLessThan(orderedIndexes[3]);
    });
  });

  describe("FN-4634 in-progress GitHub linked badge far-right placement", () => {
    const trackedIssue = {
      owner: "owner",
      repo: "repo",
      number: 42,
      url: "https://github.com/owner/repo/issues/42",
      createdAt: "2026-05-12T00:00:00.000Z",
    };

    it.each([
      {
        name: "retry summary present",
        taskPatch: { retrySummary: { total: 2 } as any },
        expectedLeftChipSelector: ".card-retry-badge",
      },
      {
        name: "time indicator present",
        taskPatch: {
          executionStartedAt: "2026-04-25T12:00:00.000Z",
          updatedAt: "2026-04-25T12:12:00.000Z",
        },
        expectedLeftChipSelector: ".card-time-indicator",
      },
    ])("keeps tracking chip visually last on in-progress when files changed is absent: $name", ({ taskPatch, expectedLeftChipSelector }) => {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "in-progress",
            sourceType: "dashboard_ui",
            modifiedFiles: [],
            githubTracking: { issue: trackedIssue },
            ...taskPatch,
          })}
          onOpenDetail={noop}
          addToast={noop}
          onOpenDetailWithTab={vi.fn()}
        />,
      );

      const footerRow = container.querySelector(".card-footer-row");
      const trackingChip = container.querySelector(".card-github-tracking-chip") as HTMLElement | null;
      const leftChip = container.querySelector(expectedLeftChipSelector) as HTMLElement | null;
      expect(footerRow).not.toBeNull();
      expect(footerRow).toHaveClass("card-footer-row--chip-far-right");
      expect(trackingChip).not.toBeNull();
      expect(leftChip).not.toBeNull();
      expect(getComputedStyle(trackingChip as HTMLElement).order).toBe("2");
      expect(getComputedStyle(leftChip as HTMLElement).order).not.toBe("2");
    });

    it("does not force far-right modifier when in-progress card has files changed", () => {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "in-progress",
            sourceType: "dashboard_ui",
            modifiedFiles: ["src/file.ts"],
            githubTracking: { issue: trackedIssue },
            retrySummary: { total: 2 } as any,
          })}
          onOpenDetail={noop}
          addToast={noop}
          onOpenDetailWithTab={vi.fn()}
        />,
      );

      const footerRow = container.querySelector(".card-footer-row");
      expect(footerRow).not.toBeNull();
      expect(footerRow).not.toHaveClass("card-footer-row--chip-far-right");
    });

    it("does not force far-right modifier for in-review cards without files changed", () => {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "in-review",
            sourceType: "dashboard_ui",
            modifiedFiles: [],
            githubTracking: { issue: trackedIssue },
            retrySummary: { total: 2 } as any,
          })}
          onOpenDetail={noop}
          addToast={noop}
          onOpenDetailWithTab={vi.fn()}
        />,
      );

      const footerRow = container.querySelector(".card-footer-row");
      expect(footerRow).not.toBeNull();
      expect(footerRow).not.toHaveClass("card-footer-row--chip-far-right");
    });
  });

  it("does not render a GitHub tracking link when githubTracking is absent", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.queryByRole("link", { name: /Linked GitHub issue/i })).toBeNull();
  });

  it("renders both provenance marker and tracking chip for github_import tasks when the tracking issue is distinct from source", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "github_import",
          sourceMetadata: { issueUrl: "https://github.com/owner/repo/issues/42" },
          githubTracking: {
            issue: {
              owner: "other",
              repo: "tracking",
              number: 99,
              url: "https://github.com/other/tracking/issues/99",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByRole("link", { name: "Linked GitHub issue #99" })).toBeDefined();
    expect(screen.getByLabelText("Imported from GitHub")).toBeDefined();
  });

  it("hides tracking chip when github_import tracking issue matches source owner/repo/number", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "github_import",
          sourceMetadata: { issueUrl: "https://github.com/owner/repo/issues/42" },
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.queryByRole("link", { name: /Linked GitHub issue/i })).toBeNull();
    expect(screen.getByLabelText("Imported from GitHub")).toBeDefined();
  });

  it("does not render a GitHub tracking link when a matching issue badge is already shown", () => {
    render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
          issueInfo: {
            url: "https://github.com/owner/repo/issues/42",
            number: 42,
            state: "open",
            title: "Issue",
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.queryByRole("link", { name: /Linked GitHub issue/i })).toBeNull();
  });

  it("clicking the GitHub tracking link does not open the task detail modal", () => {
    const onOpenDetail = vi.fn();
    render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
          githubTracking: {
            issue: {
              owner: "owner",
              repo: "repo",
              number: 42,
              url: "https://github.com/owner/repo/issues/42",
              createdAt: "2026-05-12T00:00:00.000Z",
            },
          },
        })}
        onOpenDetail={onOpenDetail}
        addToast={noop}
      />,
    );

    fireEvent.click(screen.getByRole("link", { name: "Linked GitHub issue #42" }));
    expect(onOpenDetail).not.toHaveBeenCalled();
  });

  it("renders agent-created provenance badge for automation tasks and prefers sourceMetadata.agentName", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "automation",
          sourceAgentId: "agent-123",
          sourceMetadata: { agentName: "Task Robot" },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-agent-created-badge");
    expect(badge).not.toBeNull();
    expect(badge?.getAttribute("title")).toBe("Created by agent: Task Robot");
  });

  it("renders agent-created provenance badge for agent_heartbeat tasks", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "agent_heartbeat",
          sourceAgentId: "heartbeat-agent-1",
          sourceMetadata: { agentName: "Scheduler Bot" },
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-agent-created-badge");
    expect(badge).not.toBeNull();
    expect(badge?.getAttribute("title")).toBe("Created by agent: Scheduler Bot");
    expect(badge?.getAttribute("aria-label")).toBe("Created by agent: Scheduler Bot");
  });

  it("renders agent-created provenance badge for legacy sourceAgentId-only tasks", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceAgentId: "legacy-agent-1",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-agent-created-badge");
    expect(badge).not.toBeNull();
    expect(badge?.getAttribute("title")).toBe("Created by agent: legacy-agent-1");
  });

  it("does not render agent-created provenance badge for non-agent task sources", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "todo",
          sourceType: "dashboard_ui",
          sourceAgentId: undefined,
          sourceMetadata: undefined,
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-agent-created-badge")).toBeNull();
  });

  it("coexists with GitHub badge and timer metadata", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "done",
          sourceType: "github_import",
          sourceAgentId: "agent-42",
          sourceMetadata: { issueUrl: "https://github.com/owner/repo/issues/7" },
          issueInfo: {
            owner: "owner",
            repo: "repo",
            issueNumber: 7,
            state: "open",
            title: "Fix bug",
          } as any,
          executionStartedAt: "2026-04-25T13:00:00.000Z",
          executionCompletedAt: "2026-04-25T15:00:00.000Z",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-github-badge")).not.toBeNull();
    expect(container.querySelector(".card-source-provenance")).not.toBeNull();
    expect(container.querySelector(".card-agent-created-badge")).not.toBeNull();
    expect(container.querySelector(".card-time-indicator")).not.toBeNull();
  });

  it("FN-4511 keeps GitHub badge sizing tokens aligned with card-time-indicator", () => {
    const baseCss = loadAllAppCssBaseOnly();

    expect(baseCss).toMatch(/\.card-github-badge\s*\{[^}]*padding:\s*var\(--space-xs\)\s+var\(--space-sm\);[^}]*\}/);
    expect(baseCss).toMatch(/\.card-github-badge\s*\{[^}]*font-size:\s*0\.6875rem;[^}]*\}/);
    expect(baseCss).toMatch(/\.card-github-badge\s*\{[^}]*gap:\s*var\(--space-xs\);[^}]*\}/);
    expect(baseCss).toMatch(/\.card-github-badge\s*\{[^}]*font-family:\s*var\(--font-mono\);[^}]*\}/);

    const fullCss = loadAllAppCss();
    expect(fullCss).toMatch(/@media\s*\(max-width:\s*768px\)\s*\{[\s\S]*?\.card-github-badge\s*\{[^}]*font-size:\s*0\.625rem;[^}]*\}/);
  });

  it("FN-4525 defines shared card-chip height tokens and applies them to badges and chips", () => {
    const baseCss = loadAllAppCssBaseOnly();

    expect(baseCss).toMatch(/:root\s*\{[^}]*--card-chip-height:\s*22px;[^}]*--card-chip-height-mobile:\s*20px;[^}]*\}/);
    expect(baseCss).toMatch(/\.card-github-badge\s*\{[^}]*height:\s*var\(--card-chip-height\);[^}]*\}/);
    expect(baseCss).toMatch(/\.card-time-indicator\s*,\s*\.card-github-tracking-chip\s*,\s*\.card-retry-badge\s*\{[^}]*height:\s*var\(--card-chip-height\);[^}]*\}/);
  });

  it("FN-4525 applies shared mobile card-chip height token to badges and chips", () => {
    const fullCss = loadAllAppCss();

    expect(fullCss).toMatch(/@media\s*\(max-width:\s*768px\)\s*\{[\s\S]*?\.card-github-badge\s*\{[^}]*height:\s*var\(--card-chip-height-mobile\);[^}]*\}/);
    expect(fullCss).toMatch(/@media\s*\(max-width:\s*768px\)\s*\{[\s\S]*?\.card-time-indicator\s*,\s*\.card-github-tracking-chip\s*,\s*\.card-retry-badge\s*\{[^}]*height:\s*var\(--card-chip-height-mobile\);[^}]*\}/);
  });

  it("FN-4511 keeps GitHub badge and timer chip geometry in parity", () => {
    const cleanupCss = mountCssForBadgeTests();
    try {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "done",
            issueInfo: {
              owner: "owner",
              repo: "repo",
              issueNumber: 7,
              state: "open",
              title: "Fix bug",
            } as any,
            executionStartedAt: "2026-04-25T13:00:00.000Z",
            executionCompletedAt: "2026-04-25T15:00:00.000Z",
          })}
          onOpenDetail={noop}
          addToast={noop}
        />,
      );

      const githubBadge = container.querySelector(".card-github-badge") as HTMLElement;
      const timeIndicator = container.querySelector(".card-time-indicator") as HTMLElement;
      expect(githubBadge).toBeDefined();
      expect(timeIndicator).toBeDefined();

      const githubStyles = getComputedStyle(githubBadge);
      const timeStyles = getComputedStyle(timeIndicator);

      expect(githubStyles.padding).toBe(timeStyles.padding);
      expect(githubStyles.fontSize).toBe(timeStyles.fontSize);
      expect(githubStyles.lineHeight).toBe(timeStyles.lineHeight);
      const githubBorderTopWidth = githubStyles.borderTopWidth || "1px";
      const timeBorderTopWidth = timeStyles.borderTopWidth || "1px";
      const githubBorderBottomWidth = githubStyles.borderBottomWidth || "1px";
      const timeBorderBottomWidth = timeStyles.borderBottomWidth || "1px";
      expect(githubBorderTopWidth).toBe(timeBorderTopWidth);
      expect(githubBorderBottomWidth).toBe(timeBorderBottomWidth);
      expect(githubStyles.gap).toBe(timeStyles.gap);

      if (githubBadge.offsetHeight > 0 || timeIndicator.offsetHeight > 0) {
        expect(githubBadge.offsetHeight).toBe(timeIndicator.offsetHeight);
      } else {
        expect(githubStyles.height).not.toBe("");
        expect(githubStyles.height).toBe(timeStyles.height);
      }
    } finally {
      cleanupCss();
    }
  });

  it("FN-4511 preserves transparent border slot on .card-github-badge", () => {
    const css = loadAllAppCssBaseOnly();
    expect(css).toMatch(/\.card-github-badge\s*\{[^}]*border:\s*1px\s+solid\s+transparent;[^}]*\}/);
  });

  it.each([
    {
      name: "uses live diff stats over stale mergeDetails",
      diff: { stats: { filesChanged: 2, additions: 4, deletions: 1 }, loading: false },
      mergeDetails: { filesChanged: 108 },
      expectedLabel: "2 files changed",
    },
    {
      name: "uses mergeDetails as transient placeholder while loading",
      diff: { stats: null, loading: true },
      mergeDetails: { filesChanged: 108 },
      expectedLabel: "108 files changed",
    },
    {
      name: "hides badge when fetch resolved null",
      diff: { stats: null, loading: false },
      mergeDetails: { filesChanged: 108 },
      expectedLabel: null,
    },
    {
      name: "hides badge when live diff resolves zero",
      diff: { stats: { filesChanged: 0, additions: 0, deletions: 0 }, loading: false },
      mergeDetails: { filesChanged: 108 },
      expectedLabel: null,
    },
    {
      name: "uses singular grammar for one live file",
      diff: { stats: { filesChanged: 1, additions: 1, deletions: 0 }, loading: false },
      mergeDetails: undefined,
      expectedLabel: "1 file changed",
    },
  ])("FN-4527 done-task files changed contract: $name", ({ diff, mergeDetails, expectedLabel }) => {
    useTaskDiffStatsMock.mockReturnValue(diff);

    render(
      <TaskCard
        task={makeTask({
          column: "done",
          mergeDetails: mergeDetails
            ? {
                commitSha: "abc123",
                insertions: 10,
                deletions: 2,
                mergedAt: "2026-04-25T15:00:00.000Z",
                mergeConfirmed: true,
                ...mergeDetails,
              }
            : undefined,
        })}
        onOpenDetail={noop}
        addToast={noop}
        onOpenDetailWithTab={vi.fn()}
      />,
    );

    if (expectedLabel) {
      expect(screen.getByRole("button", { name: expectedLabel })).toBeDefined();
      return;
    }

    const filesChangedButton = document.querySelector(".card-session-files");
    expect(filesChangedButton).toBeNull();
  });

  it("renders files-changed metadata and timer chip in footer row", () => {
    useTaskDiffStatsMock.mockReturnValue({
      stats: { filesChanged: 4, additions: 10, deletions: 2 },
      loading: false,
    });

    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "done",
          columnMovedAt: "2026-04-25T15:00:00.000Z",
          updatedAt: "2026-04-25T15:00:00.000Z",
          createdAt: "2026-04-25T13:00:00.000Z",
          workflowStepResults: [
            {
              workflowStepId: "step-1",
              workflowStepName: "Plan",
              phase: "pre-merge" as const,
              status: "passed" as const,
              startedAt: "2026-04-25T13:00:00.000Z",
              completedAt: "2026-04-25T15:00:00.000Z",
            },
          ],
          mergeDetails: {
            commitSha: "abc123",
            filesChanged: 4,
            insertions: 10,
            deletions: 2,
            mergedAt: "2026-04-25T15:00:00.000Z",
            mergeConfirmed: true,
          },
        })}
        onOpenDetail={noop}
        addToast={noop}
        onOpenDetailWithTab={vi.fn()}
      />,
    );

    const header = container.querySelector(".card-header");
    const footerRow = container.querySelector(".card-footer-row");
    const filesChanged = container.querySelector(".card-session-files");
    const timer = container.querySelector(".card-time-indicator");

    expect(header).not.toBeNull();
    expect(footerRow).not.toBeNull();
    expect(filesChanged).not.toBeNull();
    expect(timer).not.toBeNull();
    expect(footerRow?.contains(filesChanged)).toBe(true);
    expect(footerRow?.contains(timer)).toBe(true);
    expect(header?.contains(timer)).toBe(false);
    expect(Array.from(footerRow?.children ?? [])).toEqual([filesChanged, timer]);
  });

  it("shows timer chip for in-review cards", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          workflowStepResults: [
            {
              workflowStepId: "step-1",
              workflowStepName: "Plan",
              phase: "pre-merge" as const,
              status: "passed" as const,
              startedAt: "2026-04-25T12:00:00.000Z",
              completedAt: "2026-04-25T12:08:00.000Z",
            },
          ],
          log: [
            {
              timestamp: "2026-04-25T12:09:00.000Z",
              action: "[timing] llm_call in 240000ms",
              outcome: "",
            } as unknown as Task["log"][number],
          ],
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer).not.toBeNull();
    expect(timer?.textContent).toContain("12m");
    expect(timer?.getAttribute("title")).toContain("Execution time 12m");
    expect(timer?.getAttribute("title")).not.toContain("Completed");
  });

  it("keeps the in-review timer live from executionStartedAt when present", () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date("2026-04-25T12:30:00.000Z"));

    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          executionStartedAt: "2026-04-25T12:00:00.000Z",
          columnMovedAt: "2026-04-25T12:12:00.000Z",
          updatedAt: "2026-04-25T12:30:00.000Z",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer).not.toBeNull();
    expect(timer?.textContent).toContain("30m");
    expect(timer?.getAttribute("title")).toBe("Execution time 30m");

    act(() => {
      vi.advanceTimersByTime(5 * 60_000);
    });

    expect(container.querySelector(".card-time-indicator")?.textContent).toContain("35m");
    expect(container.querySelector(".card-time-indicator")?.getAttribute("title")).toBe("Execution time 35m");
  });

  it("shows cumulative runtime across a user reopen", () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date("2026-05-15T13:17:00.000Z"));

    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          firstExecutionAt: "2026-05-15T08:42:00.000Z",
          cumulativeActiveMs: 6 * 60_000,
          executionStartedAt: "2026-05-15T13:15:00.000Z",
          columnMovedAt: "2026-05-15T13:17:00.000Z",
          updatedAt: "2026-05-15T13:17:00.000Z",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer).not.toBeNull();
    expect(timer?.textContent).toContain("6m");
    expect(timer?.getAttribute("title")).toBe("Execution time 6m");
  });

  it("keeps legacy wall-clock timers after firstExecutionAt migration backfill", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "done",
          executionStartedAt: "2026-04-25T12:00:00.000Z",
          executionCompletedAt: "2026-04-25T12:30:00.000Z",
          firstExecutionAt: "2026-04-25T12:00:00.000Z",
          cumulativeActiveMs: undefined,
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer).not.toBeNull();
    expect(timer?.textContent).toContain("30m");
  });

  it.each(["merging", "merging-fix"] as const)("shows live merge elapsed in timer chip while task.status is %s", (status) => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date("2026-04-25T13:45:00.000Z"));

    try {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "in-review",
            status,
            executionStartedAt: "2026-04-25T13:00:00.000Z",
            updatedAt: "2026-04-25T13:44:30.000Z",
            workflowStepResults: [
              {
                workflowStepId: "step-1",
                workflowStepName: "Plan",
                phase: "pre-merge" as const,
                status: "passed" as const,
                startedAt: "2026-04-25T12:00:00.000Z",
                completedAt: "2026-04-25T12:03:00.000Z",
              },
            ],
          })}
          onOpenDetail={noop}
          addToast={noop}
        />,
      );

      const timer = container.querySelector(".card-time-indicator");
      expect(timer).not.toBeNull();
      expect(timer?.textContent).toContain("45m");
      expect(timer?.getAttribute("title")).toBe("Execution time 45m. Merge phase <1m");
    } finally {
      vi.useRealTimers();
    }
  });

  it("does not render timer chip for in-review cards without instrumentation data", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-review",
          workflowStepResults: undefined,
          log: [],
          timedExecutionMs: undefined,
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-time-indicator")).toBeNull();
  });

  it.each(["triage", "todo", "archived"] as const)(
    "does not render timer chip for %s cards",
    (column) => {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column,
            workflowStepResults: [
              {
                workflowStepId: "step-1",
                workflowStepName: "Plan",
                phase: "pre-merge" as const,
                status: "passed" as const,
                startedAt: "2026-04-25T13:00:00.000Z",
                completedAt: "2026-04-25T15:00:00.000Z",
              },
            ],
          })}
          onOpenDetail={noop}
          addToast={noop}
        />,
      );

      expect(container.querySelector(".card-time-indicator")).toBeNull();
    },
  );

  it("shows wall-clock timer for in-progress cards when columnMovedAt is available", () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date("2026-04-25T12:05:00.000Z"));

    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-progress",
          columnMovedAt: "2026-04-25T12:00:00.000Z",
          updatedAt: "2026-04-25T12:00:00.000Z",
          createdAt: "2026-04-25T11:58:00.000Z",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer?.textContent).toContain("5m");
    expect(timer?.getAttribute("title")).toContain("In progress 5m");
  });

  it("prefers executionStartedAt over a newer columnMovedAt for in-progress timers", () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date("2026-04-25T12:10:00.000Z"));

    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-progress",
          columnMovedAt: "2026-04-25T12:08:00.000Z",
          executionStartedAt: "2026-04-25T12:00:00.000Z",
          updatedAt: "2026-04-25T12:08:00.000Z",
          createdAt: "2026-04-25T11:58:00.000Z",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer?.textContent).toContain("10m");
    expect(timer?.getAttribute("title")).toContain("In progress 10m");
  });

  it("does not render timer chip on done card without instrumentation, even with old timestamps", () => {
    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "done",
          createdAt: "2026-04-25T10:00:00.000Z",
          columnMovedAt: "2026-04-25T12:30:00.000Z",
          updatedAt: "2026-04-25T12:30:00.000Z",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(container.querySelector(".card-time-indicator")).toBeNull();
  });

  describe("formatElapsedDuration rounding for done tasks", () => {
    it.each([
      [59_999, "1m"],
      [60_000, "1m"],
      [90_000, "2m"],
      [3_540_000, "1h"],
      [3_600_000, "1h"],
      [86_400_000, "1d"],
    ])("formats %dms as %s for done tasks", (elapsedMs, expected) => {
      expect(formatElapsedDurationDone(elapsedMs)).toBe(expected);
    });

    it("keeps in-progress rounding with floor semantics", () => {
      vi.useFakeTimers();
      vi.setSystemTime(new Date("2026-04-25T12:01:30.000Z"));

      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "in-progress",
            workflowStepResults: [
              {
                workflowStepId: "step-1",
                workflowStepName: "Plan",
                phase: "pre-merge" as const,
                status: "pending" as const,
                startedAt: "2026-04-25T12:00:00.000Z",
              },
            ],
          })}
          onOpenDetail={noop}
          addToast={noop}
        />,
      );

      expect(container.querySelector(".card-time-indicator")?.textContent).toContain("1m");
    });

    it("renders done-card timer with ceiling rounding for fractional minutes", () => {
      const { container } = render(
        <TaskCard
          task={makeTask({
            column: "done",
            createdAt: "2026-04-25T12:00:00.000Z",
            columnMovedAt: "2026-04-25T12:04:30.000Z",
            updatedAt: "2026-04-25T12:04:30.000Z",
            workflowStepResults: [
              {
                workflowStepId: "step-1",
                workflowStepName: "Plan",
                phase: "pre-merge" as const,
                status: "passed" as const,
                startedAt: "2026-04-25T12:00:00.000Z",
                completedAt: "2026-04-25T12:04:30.000Z",
              },
            ],
          })}
          onOpenDetail={noop}
          addToast={noop}
        />,
      );

      expect(container.querySelector(".card-time-indicator")?.textContent).toContain("5m");
    });
  });

  it("live-ticks workflow runtime for in-progress steps", () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date("2026-04-25T12:00:30.000Z"));

    const { container } = render(
      <TaskCard
        task={makeTask({
          column: "in-progress",
          workflowStepResults: [
            {
              workflowStepId: "step-1",
              workflowStepName: "Plan",
              phase: "pre-merge" as const,
              status: "pending" as const,
              startedAt: "2026-04-25T12:00:00.000Z",
            },
          ],
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const timer = container.querySelector(".card-time-indicator");
    expect(timer?.textContent).toContain("<1m");

    act(() => {
      vi.advanceTimersByTime(30_000);
    });

    expect(container.querySelector(".card-time-indicator")?.textContent).toContain("1m");
  });
});

describe("TaskCard provider icons on agent row", () => {
  it("renders provider icons when task has model overrides", () => {
    render(
      <TaskCard
        task={makeTask({ modelProvider: "anthropic", assignedAgentId: "agent-1" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByTestId("card-provider-icons")).toBeDefined();
    expect(screen.getByTestId("provider-icon-anthropic")).toBeDefined();
  });

  it("keeps assigned agent badge accessible when label is visually collapsible", async () => {
    vi.mocked(fetchAgent).mockResolvedValue({
      id: "agent-robot",
      name: "Task Robot",
      role: "executor",
      state: "active",
      metadata: {},
      heartbeatHistory: [],
      completedRuns: [],
      createdAt: "2026-01-01T00:00:00.000Z",
      updatedAt: "2026-01-01T00:00:00.000Z",
    } as any);

    const { container } = render(
      <TaskCard
        task={makeTask({ modelProvider: "anthropic", assignedAgentId: "agent-robot" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    await waitFor(() => {
      const badge = container.querySelector(".card-agent-badge");
      expect(badge).not.toBeNull();
      expect(badge?.getAttribute("title")).toBe("Assigned to Task Robot");
      expect(badge?.querySelector(".visually-hidden")?.textContent).toContain("Assigned to Task Robot");
    });
  });

  it("deduplicates when executor and validator use same provider", () => {
    render(
      <TaskCard
        task={makeTask({
          modelProvider: "openai",
          validatorModelProvider: "openai",
          planningModelProvider: "anthropic",
        })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const icons = screen.getByTestId("card-provider-icons");
    expect(icons.querySelectorAll("[data-testid^='provider-icon-']").length).toBe(2);
    expect(screen.getByTestId("provider-icon-openai")).toBeDefined();
    expect(screen.getByTestId("provider-icon-anthropic")).toBeDefined();
  });

  it("renders agent row with provider icons even without assignedAgentId", () => {
    render(
      <TaskCard
        task={makeTask({ modelProvider: "anthropic", assignedAgentId: undefined })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.getByTestId("card-provider-icons")).toBeDefined();
    expect(screen.getByTestId("provider-icon-anthropic")).toBeDefined();
  });

  it("does not render provider icons when no model overrides set", () => {
    render(
      <TaskCard
        task={makeTask({ assignedAgentId: "agent-1" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.queryByTestId("card-provider-icons")).toBeNull();
  });
});

describe("TaskCard memo comparator provenance behavior", () => {
  it("returns false when disableDrag changes", () => {
    const task = makeTask();

    expect(
      __test_areTaskCardPropsEqual(
        { task, onOpenDetail: noop, addToast: noop, disableDrag: false } as any,
        { task, onOpenDetail: noop, addToast: noop, disableDrag: true } as any,
      ),
    ).toBe(false);
  });

  it("returns false when sourceMetadata.agentName changes", () => {
    const previousTask = makeTask({ sourceType: "automation", sourceMetadata: { agentName: "Agent One" } });
    const nextTask = makeTask({ sourceType: "automation", sourceMetadata: { agentName: "Agent Two" } });

    const previousProps = {
      task: previousTask,
      onOpenDetail: noop,
      addToast: noop,
    };
    const nextProps = {
      task: nextTask,
      onOpenDetail: noop,
      addToast: noop,
    };

    expect(__test_areTaskCardPropsEqual(previousProps as any, nextProps as any)).toBe(false);
  });

  it("returns false when sourceType changes", () => {
    const previousTask = makeTask({ sourceType: "automation", sourceMetadata: { agentName: "Agent" } });
    const nextTask = makeTask({ sourceType: "dashboard_ui", sourceMetadata: { agentName: "Agent" } });

    expect(
      __test_areTaskCardPropsEqual(
        { task: previousTask, onOpenDetail: noop, addToast: noop } as any,
        { task: nextTask, onOpenDetail: noop, addToast: noop } as any,
      ),
    ).toBe(false);
  });

  it("returns false when sourceAgentId changes", () => {
    const previousTask = makeTask({ sourceType: "automation", sourceAgentId: "agent-a" });
    const nextTask = makeTask({ sourceType: "automation", sourceAgentId: "agent-b" });

    expect(
      __test_areTaskCardPropsEqual(
        { task: previousTask, onOpenDetail: noop, addToast: noop } as any,
        { task: nextTask, onOpenDetail: noop, addToast: noop } as any,
      ),
    ).toBe(false);
  });

  it("returns false when branch changes", () => {
    const previousTask = makeTask({ branch: "feature/old", baseBranch: "main" });
    const nextTask = makeTask({ branch: "feature/new", baseBranch: "main" });

    expect(
      __test_areTaskCardPropsEqual(
        { task: previousTask, onOpenDetail: noop, addToast: noop } as any,
        { task: nextTask, onOpenDetail: noop, addToast: noop } as any,
      ),
    ).toBe(false);
  });

  it("returns false when baseBranch changes", () => {
    const previousTask = makeTask({ branch: "fusion/fn-001", baseBranch: "main" });
    const nextTask = makeTask({ branch: "fusion/fn-001", baseBranch: "release/2026-05" });

    expect(
      __test_areTaskCardPropsEqual(
        { task: previousTask, onOpenDetail: noop, addToast: noop } as any,
        { task: nextTask, onOpenDetail: noop, addToast: noop } as any,
      ),
    ).toBe(false);
  });
});

describe("TaskCard mission badge", () => {
  // Access the internal cache reset helper
  let clearCache: () => void;

  beforeAll(async () => {
    const mod = await import("../TaskCard");
    clearCache = (mod as any).__test_clearMissionTitleCache;
  });

  beforeEach(() => {
    clearCache?.();
    vi.mocked(fetchMission).mockReset();
  });

  it("displays mission title instead of missionId", async () => {
    vi.mocked(fetchMission).mockResolvedValue({
      id: "M-ABC123",
      title: "Database Optimization",
      status: "active",
      interviewState: "completed",
      milestones: [],
      createdAt: "2026-01-01T00:00:00.000Z",
      updatedAt: "2026-01-01T00:00:00.000Z",
    });

    const { container } = render(
      <TaskCard
        task={makeTask({ missionId: "M-ABC123" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-mission-badge");
    expect(badge).not.toBeNull();

    await waitFor(() => {
      // MAX_MISSION_TITLE_LENGTH is 12, so first 9 chars + "..."
      expect(badge?.textContent).toContain("Database ...");
    });
  });

  it("abbreviates long mission titles with ellipsis", async () => {
    vi.mocked(fetchMission).mockResolvedValue({
      id: "M-LONG1",
      title: "This Is A Very Long Mission Title That Exceeds Twenty Characters",
      status: "active",
      interviewState: "completed",
      milestones: [],
      createdAt: "2026-01-01T00:00:00.000Z",
      updatedAt: "2026-01-01T00:00:00.000Z",
    });

    const { container } = render(
      <TaskCard
        task={makeTask({ missionId: "M-LONG1" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-mission-badge");
    expect(badge).not.toBeNull();

    await waitFor(() => {
      // MAX_MISSION_TITLE_LENGTH is 12, so first 9 chars + "..."
      expect(badge?.textContent).toContain("This Is A...");
    });
  });

  it("falls back to missionId on fetch error", async () => {
    vi.mocked(fetchMission).mockRejectedValue(new Error("Network error"));

    const { container } = render(
      <TaskCard
        task={makeTask({ missionId: "M-ERR99" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-mission-badge");
    expect(badge).not.toBeNull();

    await waitFor(() => {
      expect(badge?.textContent).toContain("M-ERR99");
    });
  });

  it("shows mission title in title attribute", async () => {
    vi.mocked(fetchMission).mockResolvedValue({
      id: "M-TITLE",
      title: "Refactor Auth",
      status: "active",
      interviewState: "completed",
      milestones: [],
      createdAt: "2026-01-01T00:00:00.000Z",
      updatedAt: "2026-01-01T00:00:00.000Z",
    });

    const { container } = render(
      <TaskCard
        task={makeTask({ missionId: "M-TITLE" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-mission-badge");
    expect(badge).not.toBeNull();

    await waitFor(() => {
      expect(badge?.getAttribute("title")).toBe("Mission: Refactor Auth");
    });
  });

  it("shows short mission title without abbreviation", async () => {
    vi.mocked(fetchMission).mockResolvedValue({
      id: "M-SHORT",
      title: "Auth Fix",
      status: "active",
      interviewState: "completed",
      milestones: [],
      createdAt: "2026-01-01T00:00:00.000Z",
      updatedAt: "2026-01-01T00:00:00.000Z",
    });

    const { container } = render(
      <TaskCard
        task={makeTask({ missionId: "M-SHORT" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    const badge = container.querySelector(".card-mission-badge");
    expect(badge).not.toBeNull();

    await waitFor(() => {
      // "Auth Fix" is 8 chars, well under 20 — no abbreviation needed
      expect(badge?.textContent).toContain("Auth Fix");
      expect(badge?.textContent).not.toContain("...");
    });
  });
});

describe("TaskCard agent badge", () => {
  let clearAgentCache: () => void;

  beforeAll(async () => {
    const mod = await import("../TaskCard");
    clearAgentCache = (mod as { __test_clearAgentNameCache?: () => void }).__test_clearAgentNameCache ?? (() => undefined);
  });

  beforeEach(() => {
    clearAgentCache?.();
    vi.mocked(fetchAgent).mockReset();
  });

  it("renders agent badge when task has assignedAgentId", async () => {
    vi.mocked(fetchAgent).mockResolvedValue({
      id: "agent-001",
      name: "Task Robot",
      role: "executor",
      state: "active",
      metadata: {},
      heartbeatHistory: [],
      completedRuns: [],
      createdAt: "2026-01-01T00:00:00.000Z",
      updatedAt: "2026-01-01T00:00:00.000Z",
    } as any);

    render(
      <TaskCard
        task={makeTask({ assignedAgentId: "agent-001" })}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    await waitFor(() => {
      const badge = screen.getByTitle("Assigned to Task Robot");
      expect(badge).toBeDefined();
      expect(badge.querySelector(".visually-hidden")?.textContent).toContain("Assigned to Task Robot");
    });
  });

  it("does not render agent badge when assignedAgentId is undefined", () => {
    render(
      <TaskCard
        task={makeTask()}
        onOpenDetail={noop}
        addToast={noop}
      />,
    );

    expect(screen.queryByTitle(/Assigned to/)).toBeNull();
  });
});