feat(v029): MoveStatusModal — 사유 입력 + 4 status 버튼 + AI 자동 분류 placeholder

Cut B Task 7 — NoteCard 메뉴가 여는 modal.

- 사유 textarea (선택) + 활성/완료/보관/휴지통 버튼 (옮기기 즉시 setStatus + onMoved)
- 빈 사유 → null reason 전달 (trim 처리)
- AI 자동 분류 버튼 → classifyStatus(stub) 호출 + 추천 표시 + 확정 버튼
- statusLabel helper export (NoteCard 메뉴에서 재사용)
- 4 단위 테스트 (render / 버튼 클릭 / AI 추천 흐름 / 빈 사유 null)

tests/unit/MoveStatusModal.test.tsx

@@ -0,0 +1,102 @@
+// @vitest-environment jsdom
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import '@testing-library/jest-dom/vitest';
+import { render, screen, fireEvent, cleanup, waitFor } from '@testing-library/react';
+
+const { mockSetStatus, mockClassify } = vi.hoisted(() => ({
+  mockSetStatus: vi.fn(async () => ({ ok: true as const })),
+  mockClassify: vi.fn(async () => ({
+    recommended: 'completed' as const,
+    rationale: '결재 끝'
+  }))
+}));
+
+vi.mock('../../src/renderer/inbox/api.js', () => ({
+  inboxApi: {
+    setStatus: mockSetStatus,
+    classifyStatus: mockClassify
+  }
+}));
+
+import { MoveStatusModal } from '../../src/renderer/inbox/components/MoveStatusModal';
+
+describe('MoveStatusModal', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    cleanup();
+  });
+
+  it('renders reason textarea + 4 buttons + AI classify button', () => {
+    render(
+      <MoveStatusModal
+        noteId="n1"
+        rawText="t"
+        summary=""
+        initialTarget="completed"
+        onClose={vi.fn()}
+        onMoved={vi.fn()}
+      />
+    );
+    expect(screen.getByRole('textbox')).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: '완료' })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: '보관' })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: '휴지통' })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: /AI 자동 분류/ })).toBeInTheDocument();
+  });
+
+  it('clicking 완료 calls setStatus with reason', async () => {
+    const onMoved = vi.fn();
+    render(
+      <MoveStatusModal
+        noteId="n1"
+        rawText="t"
+        summary=""
+        initialTarget="completed"
+        onClose={vi.fn()}
+        onMoved={onMoved}
+      />
+    );
+    fireEvent.change(screen.getByRole('textbox'), { target: { value: '결재 끝' } });
+    fireEvent.click(screen.getByRole('button', { name: '완료' }));
+    await waitFor(() => {
+      expect(mockSetStatus).toHaveBeenCalledWith('n1', 'completed', '결재 끝');
+      expect(onMoved).toHaveBeenCalledWith('completed', '결재 끝');
+    });
+  });
+
+  it('AI 자동 분류 → recommendation 표시 + 확정 → setStatus', async () => {
+    const onMoved = vi.fn();
+    render(
+      <MoveStatusModal
+        noteId="n1"
+        rawText="t"
+        summary=""
+        initialTarget="completed"
+        onClose={vi.fn()}
+        onMoved={onMoved}
+      />
+    );
+    fireEvent.change(screen.getByRole('textbox'), { target: { value: '결재 끝' } });
+    fireEvent.click(screen.getByRole('button', { name: /AI 자동 분류/ }));
+    await screen.findByText(/AI 추천/);
+    expect(screen.getByText(/이유: 결재 끝/)).toBeInTheDocument();
+    fireEvent.click(screen.getByRole('button', { name: /확정/ }));
+    await waitFor(() => expect(onMoved).toHaveBeenCalledWith('completed', '결재 끝'));
+  });
+
+  it('빈 사유 → null reason 전달', async () => {
+    const onMoved = vi.fn();
+    render(
+      <MoveStatusModal
+        noteId="n1"
+        rawText="t"
+        summary=""
+        initialTarget="archived"
+        onClose={vi.fn()}
+        onMoved={onMoved}
+      />
+    );
+    fireEvent.click(screen.getByRole('button', { name: '보관' }));
+    await waitFor(() => expect(mockSetStatus).toHaveBeenCalledWith('n1', 'archived', null));
+  });
+});