feat(renderer): GitStatusPanel sidebar tab + git.refresh event

tests/component/sidebar/GitStatusPanel.test.tsx

@@ -0,0 +1,73 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { GitStatusPanel } from '@/components/sidebar/GitStatusPanel';
+import { useFileStore } from '@/stores/file-store';
+
+vi.mock('@/lib/ipc', () => ({
+  ipc: {
+    file: {
+      gitStatus: vi.fn(),
+    },
+  },
+}));
+
+import { ipc } from '@/lib/ipc';
+
+describe('GitStatusPanel', () => {
+  beforeEach(() => {
+    localStorage.clear();
+    vi.clearAllMocks();
+  });
+
+  it('shows "No folder open" when rootPath is null', () => {
+    useFileStore.setState({ rootPath: null } as any);
+    render(<GitStatusPanel />);
+    expect(screen.getByText(/no folder open/i)).toBeInTheDocument();
+  });
+
+  it('fetches and shows git status', async () => {
+    (ipc.file.gitStatus as any).mockResolvedValueOnce({
+      ok: true,
+      data: [
+        { filePath: '/project/a.md', status: 'modified' },
+        { filePath: '/project/b.md', status: 'added' },
+      ],
+    });
+    useFileStore.setState({ rootPath: '/project' } as any);
+    render(<GitStatusPanel />);
+    expect(await screen.findByText('a.md')).toBeInTheDocument();
+    expect(await screen.findByText('b.md')).toBeInTheDocument();
+  });
+
+  it('shows "Working tree clean" when no changes', async () => {
+    (ipc.file.gitStatus as any).mockResolvedValueOnce({ ok: true, data: [] });
+    useFileStore.setState({ rootPath: '/project' } as any);
+    render(<GitStatusPanel />);
+    expect(await screen.findByText(/working tree clean/i)).toBeInTheDocument();
+  });
+
+  it('shows error state when gitStatus fails', async () => {
+    (ipc.file.gitStatus as any).mockResolvedValueOnce({
+      ok: false,
+      error: { code: 'IPC_ERROR', message: 'Not a git repository' },
+    });
+    useFileStore.setState({ rootPath: '/project' } as any);
+    render(<GitStatusPanel />);
+    // The helper text appears in a <p> element distinct from the error heading
+    expect(await screen.findByText('Not a git repository, or git not installed.')).toBeInTheDocument();
+  });
+
+  it('opens file on click', async () => {
+    const openFile = vi.fn();
+    (ipc.file.gitStatus as any).mockResolvedValueOnce({
+      ok: true,
+      data: [{ filePath: '/project/a.md', status: 'modified' }],
+    });
+    useFileStore.setState({ rootPath: '/project', openFile } as any);
+    render(<GitStatusPanel />);
+    const row = await screen.findByTestId('git-status-row');
+    await userEvent.click(row);
+    expect(openFile).toHaveBeenCalledWith('/project/a.md');
+  });
+});

tests/component/sidebar/Sidebar.test.tsx

@@ -13,6 +13,7 @@ vi.mock('@/lib/ipc', () => ({
       pickFile: vi.fn(),
       read: vi.fn(),
       write: vi.fn(),
+      gitStatus: vi.fn().mockResolvedValue({ ok: true, data: [] }),
     },
   },
 }));

tests/integration/phase5-smoke.test.tsx

@@ -36,6 +36,7 @@ vi.mock('@/lib/ipc', () => ({
       pickFolder: vi.fn().mockResolvedValue({ ok: true, data: '/root' }),
       pickFile: vi.fn().mockResolvedValue({ ok: true, data: '/root/README.md' }),
       onChange: vi.fn(() => () => {}),
+      gitStatus: vi.fn().mockResolvedValue({ ok: true, data: [] }),
     },
     menu: {
       on: vi.fn(() => () => {}),
@@ -54,6 +55,8 @@ describe('Phase 5 integration', () => {
       activeTabId: null,
     });
     useEditorStore.setState({ buffers: new Map(), activeId: null });
+    // Also clear the active buffer so breadcrumb symbols won't show stale heading text
+    useEditorStore.getState().buffers.clear();
     useAppStore.setState({
       sidebarVisible: true,
       previewVisible: true,
@@ -128,12 +131,14 @@ describe('Phase 5 integration', () => {
       ],
       activeTabId: '/a.md',
     });
+    // Use a buffer content that won't conflict with tab title in breadcrumb symbols
+    useEditorStore.setState({ buffers: new Map([['/a.md', { id: '/a.md', path: '/a.md', content: '# Hello', dirty: false }], ['/b.md', { id: '/b.md', path: '/b.md', content: '# World', dirty: false }]]), activeId: '/a.md' });
     render(<AppShell />);
-    const aTab = screen.getByText('a.md').closest('[role="tab"]')!;
-    const bTab = screen.getByText('b.md').closest('[role="tab"]')!;
-    expect(aTab).toHaveAttribute('aria-current', 'page');
+    // Use role="tab" to find tabs specifically, avoiding breadcrumb "a.md" text
+    const tabs = screen.getAllByRole('tab');
+    expect(tabs[0]).toHaveAttribute('aria-current', 'page');
     await act(async () => {
-      fireEvent.click(bTab);
+      fireEvent.click(tabs[1]);
     });
     expect(useFileStore.getState().activeTabId).toBe('/b.md');
   });

tests/integration/phase6-smoke.test.tsx

@@ -35,6 +35,7 @@ vi.mock('@/lib/ipc', () => ({
       pickFolder: vi.fn().mockResolvedValue({ ok: true, data: '/root' }),
       pickFile: vi.fn().mockResolvedValue({ ok: true, data: '/root/README.md' }),
       onChange: vi.fn(() => () => {}),
+      gitStatus: vi.fn().mockResolvedValue({ ok: true, data: [] }),
     },
     menu: {
       on: vi.fn((channel: string, cb: (...args: unknown[]) => void) => {