diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..49a282b
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,94 @@
+stages:
+  - lint
+  - test
+  - build
+
+variables:
+  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
+  NPM_CONFIG_CACHE: "$CI_PROJECT_DIR/.cache/npm"
+
+# ─── Backend Jobs ────────────────────────────────────────────────
+
+backend-lint:
+  stage: lint
+  image: python:3.12-slim
+  only:
+    - main
+    - merge_requests
+  cache:
+    key: backend-pip
+    paths:
+      - .cache/pip
+  script:
+    - cd backend
+    - python3 -c "
+      import ast, sys, pathlib;
+      ok = True;
+      for p in sorted(pathlib.Path('.').rglob('*.py')):
+          try:
+              ast.parse(p.read_text());
+          except SyntaxError as e:
+              print(f'SyntaxError in {p}\u003a {e}');
+              ok = False;
+      if not ok:
+          sys.exit(1);
+      print(f'All {len(list(pathlib.Path(\".\").rglob(\"*.py\")))} Python files passed syntax check')
+      "
+
+backend-test:
+  stage: test
+  image: python:3.12-slim
+  only:
+    - main
+    - merge_requests
+  cache:
+    key: backend-pip
+    paths:
+      - .cache/pip
+  variables:
+    DATABASE_URL: "sqlite+aiosqlite:///./test.db"
+    SECRET_KEY: "ci-test-secret-key"
+  script:
+    - cd backend
+    - pip install -e ".[dev]" aiosqlite "bcrypt<5" --quiet
+    - pytest tests/ -x -q --tb=short
+
+# ─── Frontend Jobs ───────────────────────────────────────────────
+
+.frontend-base:
+  image: node:20-slim
+  only:
+    - main
+    - merge_requests
+  cache:
+    key: frontend-npm
+    paths:
+      - .cache/npm
+      - frontend/node_modules
+  before_script:
+    - cd frontend
+    - npm ci --prefer-offline
+
+frontend-lint:
+  extends: .frontend-base
+  stage: lint
+  script:
+    - npm run lint
+
+frontend-typecheck:
+  extends: .frontend-base
+  stage: lint
+  script:
+    - npx tsc --noEmit
+
+frontend-test:
+  extends: .frontend-base
+  stage: test
+  script:
+    - npm test -- --run
+
+frontend-build:
+  extends: .frontend-base
+  stage: build
+  script:
+    - npm run build
diff --git a/backend/app/middleware/rate_limit.py b/backend/app/middleware/rate_limit.py
index 163ff7d..7773f29 100644
--- a/backend/app/middleware/rate_limit.py
+++ b/backend/app/middleware/rate_limit.py
@@ -1,6 +1,6 @@
 """
-简单的速率限制中间件
-基于内存的滑动窗口计数器
+速率限制中间件
+基于内存的滑动窗口计数器，支持按路径自定义限制和标准响应头。
 """
 import time
 from collections import defaultdict
@@ -14,50 +14,111 @@ class RateLimitMiddleware(BaseHTTPMiddleware):
     速率限制中间件
 
     - 默认: 60 次/分钟 per IP
-    - 登录/注册: 10 次/分钟 per IP
+    - 按路径配置不同限制 (path_limits)
+    - 返回标准 X-RateLimit-* 响应头
     """
 
-    def __init__(self, app, default_limit: int = 60, window_seconds: int = 60):
+    # Path-specific rate limits (requests per window).
+    # Paths not listed here fall back to ``default_limit``.
+    DEFAULT_PATH_LIMITS: dict[str, int] = {
+        # Auth endpoints — prevent brute-force / abuse
+        "/api/v1/auth/login": 10,
+        "/api/v1/auth/register": 10,
+        "/api/v1/auth/send-code": 5,
+        "/api/v1/auth/reset-password": 5,
+        # Upload — bandwidth / storage cost
+        "/api/v1/upload/policy": 30,
+        # AI review — service cost + compute
+        "/api/v1/scripts/review": 10,
+        "/api/v1/videos/review": 5,
+    }
+
+    def __init__(
+        self,
+        app,
+        default_limit: int = 60,
+        window_seconds: int = 60,
+        path_limits: dict[str, int] | None = None,
+    ):
         super().__init__(app)
         self.default_limit = default_limit
         self.window_seconds = window_seconds
         self.requests: dict[str, list[float]] = defaultdict(list)
-        # Stricter limits for auth endpoints
-        self.strict_paths = {"/api/v1/auth/login", "/api/v1/auth/register"}
-        self.strict_limit = 10
+        # Merge caller-supplied overrides on top of the built-in defaults.
+        self.path_limits: dict[str, int] = {**self.DEFAULT_PATH_LIMITS}
+        if path_limits:
+            self.path_limits.update(path_limits)
+
+    def _get_limit(self, path: str) -> int:
+        """Return the rate limit for *path*, falling back to *default_limit*."""
+        return self.path_limits.get(path, self.default_limit)
+
+    def _make_key(self, client_ip: str, path: str) -> str:
+        """Build the bucket key.
+
+        Paths with a custom limit are bucketed per-IP per-path so that
+        hitting one endpoint does not consume the quota of another.
+        Default paths share a single per-IP bucket.
+        """
+        if path in self.path_limits:
+            return f"{client_ip}:{path}"
+        return client_ip
 
     async def dispatch(self, request: Request, call_next):
         client_ip = request.client.host if request.client else "unknown"
         path = request.url.path
         now = time.time()
 
-        # Determine rate limit
-        if path in self.strict_paths:
-            key = f"{client_ip}:{path}"
-            limit = self.strict_limit
-        else:
-            key = client_ip
-            limit = self.default_limit
+        limit = self._get_limit(path)
+        key = self._make_key(client_ip, path)
 
-        # Clean old entries
+        # Clean old entries outside the sliding window
         window_start = now - self.window_seconds
         self.requests[key] = [t for t in self.requests[key] if t > window_start]
 
+        current_count = len(self.requests[key])
+        remaining = max(0, limit - current_count)
+
+        # Seconds until the oldest request in the window expires
+        if self.requests[key]:
+            reset_seconds = int(self.requests[key][0] - window_start)
+        else:
+            reset_seconds = self.window_seconds
+
+        # Build common rate-limit headers
+        rate_headers = {
+            "X-RateLimit-Limit": str(limit),
+            "X-RateLimit-Remaining": str(max(0, remaining - 1) if remaining > 0 else 0),
+            "X-RateLimit-Reset": str(reset_seconds),
+        }
+
         # Check limit
-        if len(self.requests[key]) >= limit:
+        if current_count >= limit:
             return JSONResponse(
                 status_code=429,
                 content={"detail": "请求过于频繁，请稍后再试"},
+                headers={
+                    "X-RateLimit-Limit": str(limit),
+                    "X-RateLimit-Remaining": "0",
+                    "X-RateLimit-Reset": str(reset_seconds),
+                    "Retry-After": str(reset_seconds),
+                },
             )
 
         # Record request
         self.requests[key].append(now)
 
-        # Periodic cleanup (every 1000 requests to this key)
+        # Periodic cleanup (keep memory bounded)
         if len(self.requests) > 10000:
             self._cleanup(now)
 
         response = await call_next(request)
+
+        # Attach rate-limit headers to successful responses
+        response.headers["X-RateLimit-Limit"] = rate_headers["X-RateLimit-Limit"]
+        response.headers["X-RateLimit-Remaining"] = rate_headers["X-RateLimit-Remaining"]
+        response.headers["X-RateLimit-Reset"] = rate_headers["X-RateLimit-Reset"]
+
         return response
 
     def _cleanup(self, now: float):
diff --git a/backend/app/services/auth.py b/backend/app/services/auth.py
index e4c6bc2..97bfca5 100644
--- a/backend/app/services/auth.py
+++ b/backend/app/services/auth.py
@@ -4,7 +4,8 @@
 from datetime import datetime, timedelta
 from typing import Optional
 import secrets
-from jose import jwt, JWTError
+import jwt
+from jwt.exceptions import PyJWTError as JWTError
 from passlib.context import CryptContext
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 8a0abe0..543b4e0 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -14,7 +14,7 @@ dependencies = [
     "httpx>=0.26.0",
     "pydantic[email]>=2.5.0",
     "pydantic-settings>=2.0.0",
-    "python-jose>=3.3.0",
+    "PyJWT>=2.8.0",
     "passlib>=1.7.4",
     "alembic>=1.13.0",
     "cryptography>=42.0.0",
@@ -57,6 +57,7 @@ markers = [
 ]
 filterwarnings = [
     "ignore::DeprecationWarning",
+    "ignore::jwt.warnings.InsecureKeyLengthWarning",
 ]
 
 [tool.coverage.run]
diff --git a/frontend/components/layout/MobileLayout.test.tsx b/frontend/components/layout/MobileLayout.test.tsx
index 9983bb2..5edfafa 100644
--- a/frontend/components/layout/MobileLayout.test.tsx
+++ b/frontend/components/layout/MobileLayout.test.tsx
@@ -59,7 +59,7 @@ describe('MobileLayout', () => {
         </MobileLayout>
       );
       const main = container.querySelector('main');
-      expect(main).toHaveClass('pb-[95px]');
+      expect(main).toHaveClass('pb-[80px]');
     });
 
     it('showBottomNav=false 时内容区域无底部 padding', () => {
diff --git a/frontend/components/navigation/Sidebar.test.tsx b/frontend/components/navigation/Sidebar.test.tsx
index e0f657a..422b465 100644
--- a/frontend/components/navigation/Sidebar.test.tsx
+++ b/frontend/components/navigation/Sidebar.test.tsx
@@ -30,7 +30,7 @@ describe('Sidebar', () => {
     it('渲染 agency 导航项', () => {
       render(<Sidebar role="agency" />);
       expect(screen.getByText('工作台')).toBeInTheDocument();
-      expect(screen.getByText('审核决策')).toBeInTheDocument();
+      expect(screen.getByText('审核台')).toBeInTheDocument();
       expect(screen.getByText('Brief 配置')).toBeInTheDocument();
       expect(screen.getByText('达人管理')).toBeInTheDocument();
       expect(screen.getByText('数据报表')).toBeInTheDocument();
@@ -38,7 +38,7 @@ describe('Sidebar', () => {
 
     it('渲染 brand 导航项', () => {
       render(<Sidebar role="brand" />);
-      expect(screen.getByText('数据看板')).toBeInTheDocument();
+      expect(screen.getByText('项目看板')).toBeInTheDocument();
       expect(screen.getByText('AI 配置')).toBeInTheDocument();
       expect(screen.getByText('规则配置')).toBeInTheDocument();
       expect(screen.getByText('终审台')).toBeInTheDocument();
diff --git a/frontend/contexts/AuthContext.test.tsx b/frontend/contexts/AuthContext.test.tsx
new file mode 100644
index 0000000..d44d48d
--- /dev/null
+++ b/frontend/contexts/AuthContext.test.tsx
@@ -0,0 +1,520 @@
+/**
+ * AuthContext Unit Tests
+ *
+ * Tests the AuthProvider, useAuth hook, and the exported USE_MOCK flag.
+ * Covers: initial state, login (mock + real), logout, register, and
+ * restoration of user from localStorage on mount.
+ */
+import React from 'react'
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
+import { renderHook, act, waitFor } from '@testing-library/react'
+
+// ---------------------------------------------------------------------------
+// Use vi.hoisted to create mock functions before vi.mock hoisting
+// ---------------------------------------------------------------------------
+
+const { mockApiLogin, mockApiRegister, mockClearTokens, mockGetAccessToken } = vi.hoisted(() => ({
+  mockApiLogin: vi.fn(),
+  mockApiRegister: vi.fn(),
+  mockClearTokens: vi.fn(),
+  mockGetAccessToken: vi.fn(() => null),
+}))
+
+vi.mock('@/lib/api', () => ({
+  api: {
+    login: mockApiLogin,
+    register: mockApiRegister,
+  },
+  clearTokens: mockClearTokens,
+  getAccessToken: mockGetAccessToken,
+  setTokens: vi.fn(),
+}))
+
+// ---------------------------------------------------------------------------
+// Import AuthContext after mocks are set up
+// ---------------------------------------------------------------------------
+import { AuthProvider, useAuth, USE_MOCK } from './AuthContext'
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+function mockLocalStorage() {
+  const store: Record<string, string> = {}
+  return {
+    getItem: vi.fn((key: string) => store[key] ?? null),
+    setItem: vi.fn((key: string, value: string) => {
+      store[key] = value
+    }),
+    removeItem: vi.fn((key: string) => {
+      delete store[key]
+    }),
+    clear: vi.fn(() => {
+      Object.keys(store).forEach((k) => delete store[k])
+    }),
+    get length() {
+      return Object.keys(store).length
+    },
+    key: vi.fn((index: number) => Object.keys(store)[index] ?? null),
+  }
+}
+
+const wrapper = ({ children }: { children: React.ReactNode }) => (
+  <AuthProvider>{children}</AuthProvider>
+)
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+describe('AuthContext', () => {
+  let storage: ReturnType<typeof mockLocalStorage>
+
+  beforeEach(() => {
+    storage = mockLocalStorage()
+    Object.defineProperty(window, 'localStorage', { value: storage, writable: true })
+    vi.clearAllMocks()
+    // Default: no stored token
+    mockGetAccessToken.mockReturnValue(null)
+  })
+
+  afterEach(() => {
+    storage.clear()
+  })
+
+  // ---- USE_MOCK flag ----
+
+  describe('USE_MOCK export', () => {
+    it('is exported as a boolean', () => {
+      expect(typeof USE_MOCK).toBe('boolean')
+    })
+
+    it('is true in test/development environment or based on env var', () => {
+      // vitest runs with NODE_ENV=test. The AuthContext checks for
+      // NODE_ENV === 'development' or NEXT_PUBLIC_USE_MOCK === 'true'.
+      // We verify the export exists and is a boolean.
+      expect([true, false]).toContain(USE_MOCK)
+    })
+  })
+
+  // ---- Initial state ----
+
+  describe('initial state', () => {
+    it('starts with user as null', async () => {
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+
+      expect(result.current.user).toBeNull()
+    })
+
+    it('starts with isAuthenticated as false', async () => {
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+
+      expect(result.current.isAuthenticated).toBe(false)
+    })
+
+    it('starts with isLoading true, then becomes false', async () => {
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+    })
+  })
+
+  // ---- Restoring user from localStorage ----
+
+  describe('restoring user from localStorage', () => {
+    it('restores user when token and stored user exist', async () => {
+      const storedUser = {
+        id: 'u1',
+        name: 'Restored User',
+        email: 'restored@test.com',
+        role: 'brand',
+        is_verified: true,
+      }
+
+      mockGetAccessToken.mockReturnValue('valid-token')
+      storage.setItem('miaosi_user', JSON.stringify(storedUser))
+
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+
+      expect(result.current.user).toEqual(storedUser)
+      expect(result.current.isAuthenticated).toBe(true)
+    })
+
+    it('does not restore user when token is missing', async () => {
+      const storedUser = { id: 'u1', name: 'No Token', role: 'brand', is_verified: true }
+      storage.setItem('miaosi_user', JSON.stringify(storedUser))
+      mockGetAccessToken.mockReturnValue(null)
+
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+
+      expect(result.current.user).toBeNull()
+      expect(result.current.isAuthenticated).toBe(false)
+    })
+
+    it('clears invalid JSON from localStorage gracefully', async () => {
+      mockGetAccessToken.mockReturnValue('some-token')
+      storage.setItem('miaosi_user', 'not-valid-json{{{')
+
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+
+      expect(mockClearTokens).toHaveBeenCalled()
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_user')
+      expect(result.current.user).toBeNull()
+    })
+  })
+
+  // ---- Login ----
+
+  describe('login', () => {
+    // When USE_MOCK is true, the AuthProvider uses mock login logic.
+    // When false, it calls api.login().
+
+    if (!USE_MOCK) {
+      it('calls api.login and sets user on success (real API path)', async () => {
+        const loginResponse = {
+          access_token: 'at',
+          refresh_token: 'rt',
+          token_type: 'bearer',
+          expires_in: 900,
+          user: {
+            id: 'u1',
+            name: 'API User',
+            email: 'api@test.com',
+            role: 'brand',
+            is_verified: true,
+          },
+        }
+        mockApiLogin.mockResolvedValueOnce(loginResponse)
+
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let loginResult: { success: boolean; error?: string }
+        await act(async () => {
+          loginResult = await result.current.login({
+            email: 'api@test.com',
+            password: 'pass123',
+          })
+        })
+
+        expect(loginResult!.success).toBe(true)
+        expect(result.current.user?.name).toBe('API User')
+        expect(result.current.isAuthenticated).toBe(true)
+        expect(storage.setItem).toHaveBeenCalledWith(
+          'miaosi_user',
+          expect.stringContaining('API User')
+        )
+      })
+
+      it('returns error on api.login failure (real API path)', async () => {
+        mockApiLogin.mockRejectedValueOnce(new Error('Invalid credentials'))
+
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let loginResult: { success: boolean; error?: string }
+        await act(async () => {
+          loginResult = await result.current.login({
+            email: 'bad@test.com',
+            password: 'wrong',
+          })
+        })
+
+        expect(loginResult!.success).toBe(false)
+        expect(loginResult!.error).toBe('Invalid credentials')
+        expect(result.current.user).toBeNull()
+      })
+    }
+
+    if (USE_MOCK) {
+      it('logs in with mock user for known email (mock path)', async () => {
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let loginResult: { success: boolean; error?: string }
+        await act(async () => {
+          loginResult = await result.current.login({
+            email: 'creator@demo.com',
+            password: 'demo123',
+          })
+        })
+
+        expect(loginResult!.success).toBe(true)
+        expect(result.current.user?.email).toBe('creator@demo.com')
+        expect(result.current.isAuthenticated).toBe(true)
+      })
+
+      it('returns error for unknown email in mock mode', async () => {
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let loginResult: { success: boolean; error?: string }
+        await act(async () => {
+          loginResult = await result.current.login({
+            email: 'unknown@demo.com',
+            password: 'demo123',
+          })
+        })
+
+        expect(loginResult!.success).toBe(false)
+        expect(loginResult!.error).toBeDefined()
+      })
+
+      it('returns error for wrong password in mock mode', async () => {
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let loginResult: { success: boolean; error?: string }
+        await act(async () => {
+          loginResult = await result.current.login({
+            email: 'creator@demo.com',
+            password: 'wrongpassword',
+          })
+        })
+
+        expect(loginResult!.success).toBe(false)
+        expect(loginResult!.error).toBe('密码错误')
+      })
+
+      it('allows email code login for known user in mock mode', async () => {
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let loginResult: { success: boolean; error?: string }
+        await act(async () => {
+          loginResult = await result.current.login({
+            email: 'brand@demo.com',
+            email_code: '123456',
+          })
+        })
+
+        expect(loginResult!.success).toBe(true)
+        expect(result.current.user?.email).toBe('brand@demo.com')
+        expect(result.current.user?.role).toBe('brand')
+      })
+    }
+  })
+
+  // ---- Register ----
+
+  describe('register', () => {
+    const registerData = {
+      email: 'new@example.com',
+      password: 'secure123',
+      name: 'New User',
+      role: 'creator' as const,
+      email_code: '123456',
+    }
+
+    if (!USE_MOCK) {
+      it('calls api.register and sets user on success (real API path)', async () => {
+        const registerResponse = {
+          access_token: 'at',
+          refresh_token: 'rt',
+          token_type: 'bearer',
+          expires_in: 900,
+          user: {
+            id: 'u2',
+            name: 'New User',
+            email: 'new@example.com',
+            role: 'creator',
+            is_verified: false,
+          },
+        }
+        mockApiRegister.mockResolvedValueOnce(registerResponse)
+
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let registerResult: { success: boolean; error?: string }
+        await act(async () => {
+          registerResult = await result.current.register(registerData)
+        })
+
+        expect(registerResult!.success).toBe(true)
+        expect(result.current.user?.name).toBe('New User')
+        expect(result.current.isAuthenticated).toBe(true)
+      })
+
+      it('returns error on api.register failure', async () => {
+        mockApiRegister.mockRejectedValueOnce(new Error('Email already exists'))
+
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let registerResult: { success: boolean; error?: string }
+        await act(async () => {
+          registerResult = await result.current.register(registerData)
+        })
+
+        expect(registerResult!.success).toBe(false)
+        expect(registerResult!.error).toBe('Email already exists')
+      })
+    }
+
+    if (USE_MOCK) {
+      it('creates a mock user on register in mock mode', async () => {
+        const { result } = renderHook(() => useAuth(), { wrapper })
+
+        await waitFor(() => {
+          expect(result.current.isLoading).toBe(false)
+        })
+
+        let registerResult: { success: boolean; error?: string }
+        await act(async () => {
+          registerResult = await result.current.register(registerData)
+        })
+
+        expect(registerResult!.success).toBe(true)
+        expect(result.current.user?.email).toBe('new@example.com')
+        expect(result.current.user?.name).toBe('New User')
+        expect(result.current.user?.role).toBe('creator')
+        expect(result.current.isAuthenticated).toBe(true)
+      })
+    }
+  })
+
+  // ---- Logout ----
+
+  describe('logout', () => {
+    it('clears user state, tokens, and localStorage', async () => {
+      const storedUser = {
+        id: 'u1',
+        name: 'Logged In',
+        email: 'in@test.com',
+        role: 'brand',
+        is_verified: true,
+      }
+      mockGetAccessToken.mockReturnValue('valid-token')
+      storage.setItem('miaosi_user', JSON.stringify(storedUser))
+
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+
+      expect(result.current.user).not.toBeNull()
+      expect(result.current.isAuthenticated).toBe(true)
+
+      act(() => {
+        result.current.logout()
+      })
+
+      expect(result.current.user).toBeNull()
+      expect(result.current.isAuthenticated).toBe(false)
+      expect(mockClearTokens).toHaveBeenCalled()
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_user')
+    })
+  })
+
+  // ---- switchRole ----
+
+  describe('switchRole', () => {
+    it('updates the user role and persists to localStorage', async () => {
+      const storedUser = {
+        id: 'u1',
+        name: 'Multi Role',
+        email: 'multi@test.com',
+        role: 'brand',
+        is_verified: true,
+      }
+      mockGetAccessToken.mockReturnValue('valid-token')
+      storage.setItem('miaosi_user', JSON.stringify(storedUser))
+
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+
+      expect(result.current.user?.role).toBe('brand')
+
+      act(() => {
+        result.current.switchRole('agency')
+      })
+
+      expect(result.current.user?.role).toBe('agency')
+      // Check localStorage was updated with new role
+      const storedCalls = storage.setItem.mock.calls.filter(
+        ([key]: [string, string]) => key === 'miaosi_user'
+      )
+      const lastStored = JSON.parse(storedCalls[storedCalls.length - 1][1])
+      expect(lastStored.role).toBe('agency')
+    })
+
+    it('does nothing when no user is logged in', async () => {
+      const { result } = renderHook(() => useAuth(), { wrapper })
+
+      await waitFor(() => {
+        expect(result.current.isLoading).toBe(false)
+      })
+
+      act(() => {
+        result.current.switchRole('creator')
+      })
+
+      expect(result.current.user).toBeNull()
+    })
+  })
+
+  // ---- useAuth outside provider ----
+
+  describe('useAuth outside AuthProvider', () => {
+    it('throws an error when used outside AuthProvider', () => {
+      const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+
+      expect(() => {
+        renderHook(() => useAuth())
+      }).toThrow('useAuth must be used within an AuthProvider')
+
+      consoleSpy.mockRestore()
+    })
+  })
+})
diff --git a/frontend/lib/api.test.ts b/frontend/lib/api.test.ts
new file mode 100644
index 0000000..08f0d11
--- /dev/null
+++ b/frontend/lib/api.test.ts
@@ -0,0 +1,599 @@
+/**
+ * API Client Unit Tests
+ *
+ * Tests the ApiClient singleton: axios configuration, token interceptors,
+ * 401 refresh flow, and key API method endpoint mappings.
+ */
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
+
+// ---------------------------------------------------------------------------
+// vi.hoisted() runs BEFORE vi.mock hoisting, so these variables are available
+// inside the vi.mock factory.
+// ---------------------------------------------------------------------------
+
+const {
+  mockAxiosInstance,
+  requestInterceptorHolder,
+  responseErrorInterceptorHolder,
+} = vi.hoisted(() => {
+  const requestInterceptorHolder: { fn: ((config: any) => any) | null } = { fn: null }
+  const responseErrorInterceptorHolder: { fn: ((error: any) => any) | null } = { fn: null }
+
+  const mockAxiosInstance = {
+    get: vi.fn(),
+    post: vi.fn(),
+    put: vi.fn(),
+    delete: vi.fn(),
+    interceptors: {
+      request: {
+        use: vi.fn((onFulfilled: any) => {
+          requestInterceptorHolder.fn = onFulfilled
+        }),
+      },
+      response: {
+        use: vi.fn((_onFulfilled: any, onRejected: any) => {
+          responseErrorInterceptorHolder.fn = onRejected
+        }),
+      },
+    },
+  }
+
+  return { mockAxiosInstance, requestInterceptorHolder, responseErrorInterceptorHolder }
+})
+
+vi.mock('axios', () => {
+  return {
+    default: {
+      create: vi.fn(() => mockAxiosInstance),
+      post: vi.fn(),
+    },
+  }
+})
+
+// ---------------------------------------------------------------------------
+// Import the module under test AFTER mocking axios
+// ---------------------------------------------------------------------------
+import axios from 'axios'
+import { api, getAccessToken, getRefreshToken, setTokens, clearTokens } from './api'
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+function mockLocalStorage() {
+  const store: Record<string, string> = {}
+  return {
+    getItem: vi.fn((key: string) => store[key] ?? null),
+    setItem: vi.fn((key: string, value: string) => {
+      store[key] = value
+    }),
+    removeItem: vi.fn((key: string) => {
+      delete store[key]
+    }),
+    clear: vi.fn(() => {
+      Object.keys(store).forEach((k) => delete store[k])
+    }),
+    get length() {
+      return Object.keys(store).length
+    },
+    key: vi.fn((index: number) => Object.keys(store)[index] ?? null),
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+describe('API Client', () => {
+  let storage: ReturnType<typeof mockLocalStorage>
+
+  beforeEach(() => {
+    storage = mockLocalStorage()
+    Object.defineProperty(window, 'localStorage', { value: storage, writable: true })
+
+    // Reset all mock call counts but preserve the interceptor captures
+    vi.clearAllMocks()
+  })
+
+  afterEach(() => {
+    storage.clear()
+  })
+
+  // ---- Axios instance configuration ----
+
+  describe('axios instance configuration', () => {
+    it('creates axios instance with correct baseURL and timeout', () => {
+      // axios.create is called at module load time before vi.clearAllMocks().
+      // Instead of checking call count, verify the singleton `api` exists and
+      // that axios.create was invoked (the mock instance is connected).
+      // We confirm indirectly: if api.login calls mockAxiosInstance.post,
+      // that proves axios.create returned our mock.
+      expect(api).toBeDefined()
+      // Also verify the interceptor callbacks were captured (proves setup ran)
+      expect(requestInterceptorHolder.fn).not.toBeNull()
+      expect(responseErrorInterceptorHolder.fn).not.toBeNull()
+    })
+
+    it('captures request and response interceptors during setup', () => {
+      // The interceptor functions were captured during module initialization.
+      // Verify they are functions that we can invoke.
+      expect(typeof requestInterceptorHolder.fn).toBe('function')
+      expect(typeof responseErrorInterceptorHolder.fn).toBe('function')
+    })
+  })
+
+  // ---- Token management helpers ----
+
+  describe('token management helpers', () => {
+    it('getAccessToken returns null when no token stored', () => {
+      expect(getAccessToken()).toBeNull()
+    })
+
+    it('getAccessToken returns the stored token', () => {
+      storage.setItem('miaosi_access_token', 'test-access-token')
+      expect(getAccessToken()).toBe('test-access-token')
+    })
+
+    it('getRefreshToken returns null when no token stored', () => {
+      expect(getRefreshToken()).toBeNull()
+    })
+
+    it('getRefreshToken returns the stored refresh token', () => {
+      storage.setItem('miaosi_refresh_token', 'test-refresh-token')
+      expect(getRefreshToken()).toBe('test-refresh-token')
+    })
+
+    it('setTokens stores both access and refresh tokens', () => {
+      setTokens('access-123', 'refresh-456')
+      expect(storage.setItem).toHaveBeenCalledWith('miaosi_access_token', 'access-123')
+      expect(storage.setItem).toHaveBeenCalledWith('miaosi_refresh_token', 'refresh-456')
+    })
+
+    it('clearTokens removes both tokens from storage', () => {
+      storage.setItem('miaosi_access_token', 'a')
+      storage.setItem('miaosi_refresh_token', 'b')
+      clearTokens()
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_access_token')
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_refresh_token')
+    })
+  })
+
+  // ---- Request interceptor ----
+
+  describe('request interceptor', () => {
+    it('adds Authorization header when access token exists', () => {
+      storage.setItem('miaosi_access_token', 'my-token')
+      const config = { headers: {} as Record<string, string> }
+      const result = requestInterceptorHolder.fn!(config)
+      expect(result.headers.Authorization).toBe('Bearer my-token')
+    })
+
+    it('does not add Authorization header when no token', () => {
+      const config = { headers: {} as Record<string, string> }
+      const result = requestInterceptorHolder.fn!(config)
+      expect(result.headers.Authorization).toBeUndefined()
+    })
+
+    it('always adds X-Tenant-ID header', () => {
+      const config = { headers: {} as Record<string, string> }
+      const result = requestInterceptorHolder.fn!(config)
+      expect(result.headers['X-Tenant-ID']).toBeDefined()
+    })
+  })
+
+  // ---- Response interceptor: 401 refresh ----
+
+  describe('response interceptor - 401 refresh', () => {
+    it('attempts token refresh on 401 response', async () => {
+      storage.setItem('miaosi_refresh_token', 'valid-refresh')
+
+      const newAccessToken = 'new-access-token-123';
+
+      (axios.post as ReturnType<typeof vi.fn>).mockResolvedValueOnce({
+        data: { access_token: newAccessToken, token_type: 'bearer', expires_in: 900 },
+      })
+
+      const error = {
+        response: { status: 401 },
+        config: { headers: {} as Record<string, string>, _retry: false },
+      }
+
+      // The response interceptor will:
+      // 1. Call axios.post to refresh the token
+      // 2. Try to call this.client(originalRequest) to retry
+      // Since mockAxiosInstance is an object (not callable), step 2 throws.
+      // We catch that and verify step 1 happened correctly.
+      try {
+        await responseErrorInterceptorHolder.fn!(error)
+      } catch {
+        // Expected: this.client is not a function (mockAxiosInstance is not callable)
+      }
+
+      expect(axios.post).toHaveBeenCalledWith(
+        expect.stringContaining('/auth/refresh'),
+        { refresh_token: 'valid-refresh' }
+      )
+      // Verify the new access token was stored
+      expect(storage.setItem).toHaveBeenCalledWith('miaosi_access_token', newAccessToken)
+    })
+
+    it('clears tokens and redirects to /login when refresh fails', async () => {
+      storage.setItem('miaosi_refresh_token', 'expired-refresh')
+
+      ;(axios.post as ReturnType<typeof vi.fn>).mockRejectedValueOnce(new Error('Token expired'))
+
+      const originalHref = window.location.href
+      Object.defineProperty(window, 'location', {
+        value: { href: '' },
+        writable: true,
+        configurable: true,
+      })
+
+      const error = {
+        response: { status: 401 },
+        config: { headers: {} as Record<string, string>, _retry: false },
+      }
+
+      await expect(responseErrorInterceptorHolder.fn!(error)).rejects.toThrow()
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_access_token')
+      expect(window.location.href).toBe('/login')
+
+      // Restore
+      Object.defineProperty(window, 'location', {
+        value: { href: originalHref },
+        writable: true,
+        configurable: true,
+      })
+    })
+
+    it('rejects with error message for non-401 errors', async () => {
+      const error = {
+        response: { status: 500, data: { detail: 'Internal Server Error' } },
+        config: { headers: {} as Record<string, string> },
+        message: 'Request failed',
+      }
+
+      await expect(responseErrorInterceptorHolder.fn!(error)).rejects.toThrow('Internal Server Error')
+    })
+
+    it('falls through to error handler when _retry is already true', async () => {
+      const error = {
+        response: { status: 401 },
+        config: { headers: {} as Record<string, string>, _retry: true },
+        message: 'Unauthorized',
+      }
+
+      await expect(responseErrorInterceptorHolder.fn!(error)).rejects.toThrow()
+      expect(axios.post).not.toHaveBeenCalled()
+    })
+
+    it('rejects when no refresh token is available', async () => {
+      // No refresh token in storage
+      const error = {
+        response: { status: 401 },
+        config: { headers: {} as Record<string, string>, _retry: false },
+      }
+
+      Object.defineProperty(window, 'location', {
+        value: { href: '' },
+        writable: true,
+        configurable: true,
+      })
+
+      await expect(responseErrorInterceptorHolder.fn!(error)).rejects.toThrow()
+      // refresh should not have been called since there's no token
+      expect(axios.post).not.toHaveBeenCalled()
+    })
+  })
+
+  // ---- API methods: endpoint mapping ----
+
+  describe('api.login()', () => {
+    it('calls POST /auth/login with credentials and stores tokens', async () => {
+      const mockResponse = {
+        data: {
+          access_token: 'at',
+          refresh_token: 'rt',
+          token_type: 'bearer',
+          expires_in: 900,
+          user: { id: 'u1', name: 'Test', role: 'brand', is_verified: true },
+        },
+      }
+      mockAxiosInstance.post.mockResolvedValueOnce(mockResponse)
+
+      const result = await api.login({ email: 'test@example.com', password: 'pass123' })
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith('/auth/login', {
+        email: 'test@example.com',
+        password: 'pass123',
+      })
+      expect(result.access_token).toBe('at')
+      expect(result.user.name).toBe('Test')
+      expect(storage.setItem).toHaveBeenCalledWith('miaosi_access_token', 'at')
+      expect(storage.setItem).toHaveBeenCalledWith('miaosi_refresh_token', 'rt')
+    })
+  })
+
+  describe('api.register()', () => {
+    it('calls POST /auth/register with user data and stores tokens', async () => {
+      const registerData = {
+        email: 'new@example.com',
+        password: 'secure123',
+        name: 'New User',
+        role: 'creator' as const,
+        email_code: '123456',
+      }
+      const mockResponse = {
+        data: {
+          access_token: 'new-at',
+          refresh_token: 'new-rt',
+          token_type: 'bearer',
+          expires_in: 900,
+          user: { id: 'u2', name: 'New User', email: 'new@example.com', role: 'creator', is_verified: false },
+        },
+      }
+      mockAxiosInstance.post.mockResolvedValueOnce(mockResponse)
+
+      const result = await api.register(registerData)
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith('/auth/register', registerData)
+      expect(result.user.email).toBe('new@example.com')
+      expect(storage.setItem).toHaveBeenCalledWith('miaosi_access_token', 'new-at')
+      expect(storage.setItem).toHaveBeenCalledWith('miaosi_refresh_token', 'new-rt')
+    })
+  })
+
+  describe('api.listTasks()', () => {
+    it('calls GET /tasks with pagination params', async () => {
+      mockAxiosInstance.get.mockResolvedValueOnce({
+        data: { items: [], total: 0, page: 1, page_size: 20 },
+      })
+
+      const result = await api.listTasks(1, 20)
+
+      expect(mockAxiosInstance.get).toHaveBeenCalledWith('/tasks', {
+        params: { page: 1, page_size: 20, stage: undefined },
+      })
+      expect(result.total).toBe(0)
+    })
+
+    it('passes stage filter when provided', async () => {
+      mockAxiosInstance.get.mockResolvedValueOnce({
+        data: { items: [], total: 0, page: 1, page_size: 10 },
+      })
+
+      await api.listTasks(1, 10, 'script_upload' as any)
+
+      expect(mockAxiosInstance.get).toHaveBeenCalledWith('/tasks', {
+        params: { page: 1, page_size: 10, stage: 'script_upload' },
+      })
+    })
+  })
+
+  describe('api.getUploadPolicy()', () => {
+    it('calls POST /upload/policy with file type', async () => {
+      mockAxiosInstance.post.mockResolvedValueOnce({
+        data: {
+          x_tos_algorithm: 'algo',
+          x_tos_credential: 'cred',
+          x_tos_date: '2024-01-01',
+          x_tos_signature: 'sig',
+          policy: 'base64policy',
+          host: 'https://oss.example.com',
+          dir: 'uploads/',
+          expire: 3600,
+          max_size_mb: 100,
+        },
+      })
+
+      const result = await api.getUploadPolicy('video')
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith('/upload/policy', {
+        file_type: 'video',
+      })
+      expect(result.host).toBe('https://oss.example.com')
+    })
+
+    it('defaults to "general" file type when not specified', async () => {
+      mockAxiosInstance.post.mockResolvedValueOnce({ data: {} })
+
+      await api.getUploadPolicy()
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith('/upload/policy', {
+        file_type: 'general',
+      })
+    })
+  })
+
+  describe('api.getProfile()', () => {
+    it('calls GET /profile', async () => {
+      mockAxiosInstance.get.mockResolvedValueOnce({
+        data: {
+          id: 'u1',
+          name: 'Test User',
+          email: 'test@example.com',
+          role: 'brand',
+          is_verified: true,
+        },
+      })
+
+      const result = await api.getProfile()
+
+      expect(mockAxiosInstance.get).toHaveBeenCalledWith('/profile')
+      expect(result.name).toBe('Test User')
+    })
+  })
+
+  describe('api.getMessages()', () => {
+    it('calls GET /messages with params', async () => {
+      mockAxiosInstance.get.mockResolvedValueOnce({
+        data: { items: [], total: 0, page: 1, page_size: 20 },
+      })
+
+      const params = { page: 1, page_size: 20, is_read: false }
+      const result = await api.getMessages(params)
+
+      expect(mockAxiosInstance.get).toHaveBeenCalledWith('/messages', { params })
+      expect(result.total).toBe(0)
+    })
+
+    it('calls GET /messages without params when none provided', async () => {
+      mockAxiosInstance.get.mockResolvedValueOnce({
+        data: { items: [], total: 0, page: 1, page_size: 20 },
+      })
+
+      await api.getMessages()
+
+      expect(mockAxiosInstance.get).toHaveBeenCalledWith('/messages', { params: undefined })
+    })
+  })
+
+  describe('api.getUnreadCount()', () => {
+    it('calls GET /messages/unread-count', async () => {
+      mockAxiosInstance.get.mockResolvedValueOnce({ data: { count: 5 } })
+
+      const result = await api.getUnreadCount()
+
+      expect(mockAxiosInstance.get).toHaveBeenCalledWith('/messages/unread-count')
+      expect(result.count).toBe(5)
+    })
+  })
+
+  describe('api.logout()', () => {
+    it('calls POST /auth/logout and clears tokens', async () => {
+      storage.setItem('miaosi_access_token', 'at')
+      storage.setItem('miaosi_refresh_token', 'rt')
+      mockAxiosInstance.post.mockResolvedValueOnce({ data: undefined })
+
+      await api.logout()
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith('/auth/logout')
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_access_token')
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_refresh_token')
+    })
+
+    it('clears tokens even when POST /auth/logout fails', async () => {
+      mockAxiosInstance.post.mockRejectedValueOnce(new Error('Network error'))
+
+      await api.logout().catch(() => {})
+
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_access_token')
+      expect(storage.removeItem).toHaveBeenCalledWith('miaosi_refresh_token')
+    })
+  })
+
+  describe('api.sendEmailCode()', () => {
+    it('calls POST /auth/send-code', async () => {
+      mockAxiosInstance.post.mockResolvedValueOnce({
+        data: { message: 'Code sent', expires_in: 300 },
+      })
+
+      const result = await api.sendEmailCode({ email: 'a@b.com', purpose: 'login' })
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith('/auth/send-code', {
+        email: 'a@b.com',
+        purpose: 'login',
+      })
+      expect(result.expires_in).toBe(300)
+    })
+  })
+
+  describe('api.resetPassword()', () => {
+    it('calls POST /auth/reset-password', async () => {
+      mockAxiosInstance.post.mockResolvedValueOnce({
+        data: { message: 'Password reset' },
+      })
+
+      const result = await api.resetPassword({
+        email: 'a@b.com',
+        email_code: '123456',
+        new_password: 'newpass',
+      })
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith('/auth/reset-password', {
+        email: 'a@b.com',
+        email_code: '123456',
+        new_password: 'newpass',
+      })
+      expect(result.message).toBe('Password reset')
+    })
+  })
+
+  describe('api.updateProfile()', () => {
+    it('calls PUT /profile with update data', async () => {
+      const updateData = { name: 'Updated Name' }
+      mockAxiosInstance.put.mockResolvedValueOnce({
+        data: { id: 'u1', name: 'Updated Name', role: 'brand', is_verified: true },
+      })
+
+      const result = await api.updateProfile(updateData)
+
+      expect(mockAxiosInstance.put).toHaveBeenCalledWith('/profile', updateData)
+      expect(result.name).toBe('Updated Name')
+    })
+  })
+
+  describe('api.changePassword()', () => {
+    it('calls PUT /profile/password', async () => {
+      mockAxiosInstance.put.mockResolvedValueOnce({
+        data: { message: 'Password changed' },
+      })
+
+      const result = await api.changePassword({
+        old_password: 'old',
+        new_password: 'new',
+      })
+
+      expect(mockAxiosInstance.put).toHaveBeenCalledWith('/profile/password', {
+        old_password: 'old',
+        new_password: 'new',
+      })
+      expect(result.message).toBe('Password changed')
+    })
+  })
+
+  describe('api.markMessageAsRead()', () => {
+    it('calls PUT /messages/:id/read', async () => {
+      mockAxiosInstance.put.mockResolvedValueOnce({ data: undefined })
+
+      await api.markMessageAsRead('msg-001')
+
+      expect(mockAxiosInstance.put).toHaveBeenCalledWith('/messages/msg-001/read')
+    })
+  })
+
+  describe('api.markAllMessagesAsRead()', () => {
+    it('calls PUT /messages/read-all', async () => {
+      mockAxiosInstance.put.mockResolvedValueOnce({ data: undefined })
+
+      await api.markAllMessagesAsRead()
+
+      expect(mockAxiosInstance.put).toHaveBeenCalledWith('/messages/read-all')
+    })
+  })
+
+  describe('api.setTenantId()', () => {
+    it('updates the tenant ID used in subsequent requests', () => {
+      api.setTenantId('BR002')
+      const config = { headers: {} as Record<string, string> }
+      const result = requestInterceptorHolder.fn!(config)
+      expect(result.headers['X-Tenant-ID']).toBe('BR002')
+
+      // Reset for other tests
+      api.setTenantId('default')
+    })
+  })
+
+  describe('api.healthCheck()', () => {
+    it('calls GET /health', async () => {
+      mockAxiosInstance.get.mockResolvedValueOnce({
+        data: { status: 'ok', version: '1.0.0' },
+      })
+
+      const result = await api.healthCheck()
+
+      expect(mockAxiosInstance.get).toHaveBeenCalledWith('/health')
+      expect(result.status).toBe('ok')
+    })
+  })
+})
diff --git a/frontend/lib/taskStageMapper.test.ts b/frontend/lib/taskStageMapper.test.ts
new file mode 100644
index 0000000..e433136
--- /dev/null
+++ b/frontend/lib/taskStageMapper.test.ts
@@ -0,0 +1,802 @@
+import { describe, it, expect } from 'vitest'
+import { mapTaskToUI } from './taskStageMapper'
+import type { TaskResponse, TaskStage, TaskStatus } from '@/types/task'
+
+/**
+ * Helper: create a minimal TaskResponse with sensible defaults.
+ * Pass overrides for fields you care about.
+ */
+function mockTask(overrides: Partial<TaskResponse> = {}): TaskResponse {
+  return {
+    id: 'TK000001',
+    name: '测试任务',
+    sequence: 1,
+    stage: 'script_upload' as TaskStage,
+    project: { id: 'PJ000001', name: '测试项目' },
+    agency: { id: 'AG000001', name: '测试代理商' },
+    creator: { id: 'CR000001', name: '测试达人' },
+    script_file_url: null,
+    script_file_name: null,
+    script_uploaded_at: null,
+    script_ai_score: null,
+    script_ai_result: null,
+    script_agency_status: null,
+    script_agency_comment: null,
+    script_brand_status: null,
+    script_brand_comment: null,
+    video_file_url: null,
+    video_file_name: null,
+    video_duration: null,
+    video_thumbnail_url: null,
+    video_uploaded_at: null,
+    video_ai_score: null,
+    video_ai_result: null,
+    video_agency_status: null,
+    video_agency_comment: null,
+    video_brand_status: null,
+    video_brand_comment: null,
+    appeal_count: 0,
+    is_appeal: false,
+    appeal_reason: null,
+    created_at: '2026-01-01T00:00:00Z',
+    updated_at: '2026-01-01T00:00:00Z',
+    ...overrides,
+  }
+}
+
+// ---------------------------------------------------------------------------
+// 1. script_upload stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — script_upload', () => {
+  const task = mockTask({ stage: 'script_upload' })
+  const ui = mapTaskToUI(task)
+
+  it('scriptStage.submit should be "current"', () => {
+    expect(ui.scriptStage.submit).toBe('current')
+  })
+
+  it('remaining script steps should be "pending"', () => {
+    expect(ui.scriptStage.ai).toBe('pending')
+    expect(ui.scriptStage.agency).toBe('pending')
+    expect(ui.scriptStage.brand).toBe('pending')
+  })
+
+  it('all video steps should be "pending"', () => {
+    expect(ui.videoStage.submit).toBe('pending')
+    expect(ui.videoStage.ai).toBe('pending')
+    expect(ui.videoStage.agency).toBe('pending')
+    expect(ui.videoStage.brand).toBe('pending')
+  })
+
+  it('currentPhase should be "script"', () => {
+    expect(ui.currentPhase).toBe('script')
+  })
+
+  it('buttonText should be "上传脚本"', () => {
+    expect(ui.buttonText).toBe('上传脚本')
+  })
+
+  it('buttonType should be "primary"', () => {
+    expect(ui.buttonType).toBe('primary')
+  })
+
+  it('statusLabel should be "待上传"', () => {
+    expect(ui.statusLabel).toBe('待上传')
+  })
+
+  it('filterCategory should be "pending"', () => {
+    expect(ui.filterCategory).toBe('pending')
+  })
+
+  it('scriptColor should be "blue" (no errors, brand not done)', () => {
+    expect(ui.scriptColor).toBe('blue')
+  })
+
+  it('videoColor should be "blue"', () => {
+    expect(ui.videoColor).toBe('blue')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 2. script_ai_review stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — script_ai_review', () => {
+  it('ai step should be "current" when no result yet', () => {
+    const task = mockTask({ stage: 'script_ai_review', script_ai_result: null })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.submit).toBe('done')
+    expect(ui.scriptStage.ai).toBe('current')
+    expect(ui.scriptStage.agency).toBe('pending')
+    expect(ui.scriptStage.brand).toBe('pending')
+  })
+
+  it('ai step should be "done" when result is present', () => {
+    const task = mockTask({
+      stage: 'script_ai_review',
+      script_ai_result: { score: 85, violations: [], soft_warnings: [] },
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.ai).toBe('done')
+  })
+
+  it('statusLabel should be "AI 审核中"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_ai_review' }))
+    expect(ui.statusLabel).toBe('AI 审核中')
+  })
+
+  it('buttonText should be "审核中" and buttonType "disabled"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_ai_review' }))
+    expect(ui.buttonText).toBe('审核中')
+    expect(ui.buttonType).toBe('disabled')
+  })
+
+  it('filterCategory should be "reviewing"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_ai_review' }))
+    expect(ui.filterCategory).toBe('reviewing')
+  })
+
+  it('currentPhase should be "script"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_ai_review' }))
+    expect(ui.currentPhase).toBe('script')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 3. script_agency_review stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — script_agency_review', () => {
+  it('agency step defaults to "current" when status is null/pending', () => {
+    const task = mockTask({ stage: 'script_agency_review' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.submit).toBe('done')
+    expect(ui.scriptStage.ai).toBe('done')
+    expect(ui.scriptStage.agency).toBe('current')
+    expect(ui.scriptStage.brand).toBe('pending')
+  })
+
+  it('agency step is "current" when status is "processing"', () => {
+    const task = mockTask({ stage: 'script_agency_review', script_agency_status: 'processing' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.agency).toBe('current')
+  })
+
+  it('agency step is "done" when status is "passed"', () => {
+    const task = mockTask({ stage: 'script_agency_review', script_agency_status: 'passed' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.agency).toBe('done')
+  })
+
+  it('agency step is "done" when status is "force_passed"', () => {
+    const task = mockTask({ stage: 'script_agency_review', script_agency_status: 'force_passed' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.agency).toBe('done')
+  })
+
+  it('statusLabel should be "代理商审核中"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_agency_review' }))
+    expect(ui.statusLabel).toBe('代理商审核中')
+  })
+
+  it('buttonText should be "审核中", buttonType "disabled"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_agency_review' }))
+    expect(ui.buttonText).toBe('审核中')
+    expect(ui.buttonType).toBe('disabled')
+  })
+
+  it('filterCategory should be "reviewing"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_agency_review' }))
+    expect(ui.filterCategory).toBe('reviewing')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 4. script_brand_review stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — script_brand_review', () => {
+  it('brand step defaults to "current" when status is null/pending', () => {
+    const task = mockTask({ stage: 'script_brand_review' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.submit).toBe('done')
+    expect(ui.scriptStage.ai).toBe('done')
+    expect(ui.scriptStage.agency).toBe('done')
+    expect(ui.scriptStage.brand).toBe('current')
+  })
+
+  it('brand step is "current" when status is "processing"', () => {
+    const task = mockTask({ stage: 'script_brand_review', script_brand_status: 'processing' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.brand).toBe('current')
+  })
+
+  it('brand step is "done" when status is "passed"', () => {
+    const task = mockTask({ stage: 'script_brand_review', script_brand_status: 'passed' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.brand).toBe('done')
+  })
+
+  it('statusLabel should be "品牌方审核中"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_brand_review' }))
+    expect(ui.statusLabel).toBe('品牌方审核中')
+  })
+
+  it('buttonText should be "审核中", buttonType "disabled"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_brand_review' }))
+    expect(ui.buttonText).toBe('审核中')
+    expect(ui.buttonType).toBe('disabled')
+  })
+
+  it('filterCategory should be "reviewing"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'script_brand_review' }))
+    expect(ui.filterCategory).toBe('reviewing')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 5. video_upload stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — video_upload', () => {
+  const task = mockTask({ stage: 'video_upload' })
+  const ui = mapTaskToUI(task)
+
+  it('all script steps should be "done"', () => {
+    expect(ui.scriptStage.submit).toBe('done')
+    expect(ui.scriptStage.ai).toBe('done')
+    expect(ui.scriptStage.agency).toBe('done')
+    expect(ui.scriptStage.brand).toBe('done')
+  })
+
+  it('videoStage.submit should be "current"', () => {
+    expect(ui.videoStage.submit).toBe('current')
+  })
+
+  it('remaining video steps should be "pending"', () => {
+    expect(ui.videoStage.ai).toBe('pending')
+    expect(ui.videoStage.agency).toBe('pending')
+    expect(ui.videoStage.brand).toBe('pending')
+  })
+
+  it('currentPhase should be "video"', () => {
+    expect(ui.currentPhase).toBe('video')
+  })
+
+  it('buttonText should be "上传视频"', () => {
+    expect(ui.buttonText).toBe('上传视频')
+  })
+
+  it('buttonType should be "primary"', () => {
+    expect(ui.buttonType).toBe('primary')
+  })
+
+  it('statusLabel should be "待上传"', () => {
+    expect(ui.statusLabel).toBe('待上传')
+  })
+
+  it('filterCategory should be "pending"', () => {
+    expect(ui.filterCategory).toBe('pending')
+  })
+
+  it('scriptColor should be "green" (brand done)', () => {
+    expect(ui.scriptColor).toBe('green')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 6. video_ai_review stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — video_ai_review', () => {
+  it('video ai step should be "current" when no result', () => {
+    const task = mockTask({ stage: 'video_ai_review', video_ai_result: null })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.submit).toBe('done')
+    expect(ui.videoStage.ai).toBe('current')
+    expect(ui.videoStage.agency).toBe('pending')
+    expect(ui.videoStage.brand).toBe('pending')
+  })
+
+  it('video ai step should be "done" when result is present', () => {
+    const task = mockTask({
+      stage: 'video_ai_review',
+      video_ai_result: { score: 90, violations: [], soft_warnings: [] },
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.ai).toBe('done')
+  })
+
+  it('currentPhase should be "video"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_ai_review' }))
+    expect(ui.currentPhase).toBe('video')
+  })
+
+  it('all script steps should be "done"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_ai_review' }))
+    expect(ui.scriptStage.submit).toBe('done')
+    expect(ui.scriptStage.ai).toBe('done')
+    expect(ui.scriptStage.agency).toBe('done')
+    expect(ui.scriptStage.brand).toBe('done')
+  })
+
+  it('statusLabel should be "AI 审核中"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_ai_review' }))
+    expect(ui.statusLabel).toBe('AI 审核中')
+  })
+
+  it('buttonText should be "审核中", buttonType "disabled"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_ai_review' }))
+    expect(ui.buttonText).toBe('审核中')
+    expect(ui.buttonType).toBe('disabled')
+  })
+
+  it('filterCategory should be "reviewing"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_ai_review' }))
+    expect(ui.filterCategory).toBe('reviewing')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 7. video_agency_review stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — video_agency_review', () => {
+  it('video agency step defaults to "current" when status is null', () => {
+    const task = mockTask({ stage: 'video_agency_review' })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.submit).toBe('done')
+    expect(ui.videoStage.ai).toBe('done')
+    expect(ui.videoStage.agency).toBe('current')
+    expect(ui.videoStage.brand).toBe('pending')
+  })
+
+  it('video agency step is "current" when status is "processing"', () => {
+    const task = mockTask({ stage: 'video_agency_review', video_agency_status: 'processing' })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.agency).toBe('current')
+  })
+
+  it('video agency step is "done" when status is "passed"', () => {
+    const task = mockTask({ stage: 'video_agency_review', video_agency_status: 'passed' })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.agency).toBe('done')
+  })
+
+  it('currentPhase should be "video"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_agency_review' }))
+    expect(ui.currentPhase).toBe('video')
+  })
+
+  it('statusLabel should be "代理商审核中"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_agency_review' }))
+    expect(ui.statusLabel).toBe('代理商审核中')
+  })
+
+  it('buttonText should be "审核中", buttonType "disabled"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_agency_review' }))
+    expect(ui.buttonText).toBe('审核中')
+    expect(ui.buttonType).toBe('disabled')
+  })
+
+  it('filterCategory should be "reviewing"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_agency_review' }))
+    expect(ui.filterCategory).toBe('reviewing')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 8. video_brand_review stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — video_brand_review', () => {
+  it('video brand step defaults to "current" when status is null', () => {
+    const task = mockTask({ stage: 'video_brand_review' })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.submit).toBe('done')
+    expect(ui.videoStage.ai).toBe('done')
+    expect(ui.videoStage.agency).toBe('done')
+    expect(ui.videoStage.brand).toBe('current')
+  })
+
+  it('video brand step is "current" when status is "processing"', () => {
+    const task = mockTask({ stage: 'video_brand_review', video_brand_status: 'processing' })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.brand).toBe('current')
+  })
+
+  it('video brand step is "done" when status is "passed"', () => {
+    const task = mockTask({ stage: 'video_brand_review', video_brand_status: 'passed' })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.brand).toBe('done')
+  })
+
+  it('currentPhase should be "video"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_brand_review' }))
+    expect(ui.currentPhase).toBe('video')
+  })
+
+  it('statusLabel should be "品牌方审核中"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_brand_review' }))
+    expect(ui.statusLabel).toBe('品牌方审核中')
+  })
+
+  it('filterCategory should be "reviewing"', () => {
+    const ui = mapTaskToUI(mockTask({ stage: 'video_brand_review' }))
+    expect(ui.filterCategory).toBe('reviewing')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 9. completed stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — completed', () => {
+  const task = mockTask({ stage: 'completed' })
+  const ui = mapTaskToUI(task)
+
+  it('all script steps should be "done"', () => {
+    expect(ui.scriptStage.submit).toBe('done')
+    expect(ui.scriptStage.ai).toBe('done')
+    expect(ui.scriptStage.agency).toBe('done')
+    expect(ui.scriptStage.brand).toBe('done')
+  })
+
+  it('all video steps should be "done"', () => {
+    expect(ui.videoStage.submit).toBe('done')
+    expect(ui.videoStage.ai).toBe('done')
+    expect(ui.videoStage.agency).toBe('done')
+    expect(ui.videoStage.brand).toBe('done')
+  })
+
+  it('currentPhase should be "completed"', () => {
+    expect(ui.currentPhase).toBe('completed')
+  })
+
+  it('buttonText should be "已完成"', () => {
+    expect(ui.buttonText).toBe('已完成')
+  })
+
+  it('buttonType should be "success"', () => {
+    expect(ui.buttonType).toBe('success')
+  })
+
+  it('statusLabel should be "已完成"', () => {
+    expect(ui.statusLabel).toBe('已完成')
+  })
+
+  it('filterCategory should be "completed"', () => {
+    expect(ui.filterCategory).toBe('completed')
+  })
+
+  it('scriptColor should be "green"', () => {
+    expect(ui.scriptColor).toBe('green')
+  })
+
+  it('videoColor should be "green"', () => {
+    expect(ui.videoColor).toBe('green')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 10. rejected stage
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — rejected', () => {
+  const task = mockTask({ stage: 'rejected' })
+  const ui = mapTaskToUI(task)
+
+  it('buttonText should be "重新提交"', () => {
+    expect(ui.buttonText).toBe('重新提交')
+  })
+
+  it('buttonType should be "warning"', () => {
+    expect(ui.buttonType).toBe('warning')
+  })
+
+  it('statusLabel should be "已驳回"', () => {
+    expect(ui.statusLabel).toBe('已驳回')
+  })
+
+  it('filterCategory should be "rejected"', () => {
+    expect(ui.filterCategory).toBe('rejected')
+  })
+
+  it('all script steps should be "done" (stageIndex >= 4)', () => {
+    expect(ui.scriptStage.submit).toBe('done')
+    expect(ui.scriptStage.ai).toBe('done')
+    expect(ui.scriptStage.agency).toBe('done')
+    expect(ui.scriptStage.brand).toBe('done')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 11. Script agency rejected
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — script agency rejected', () => {
+  it('scriptStage.agency should be "error" even during script_agency_review', () => {
+    const task = mockTask({
+      stage: 'script_agency_review',
+      script_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.agency).toBe('error')
+  })
+
+  it('scriptColor should be "red" when agency is error', () => {
+    const task = mockTask({
+      stage: 'script_agency_review',
+      script_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptColor).toBe('red')
+  })
+
+  it('filterCategory should be "rejected" when agency rejected', () => {
+    const task = mockTask({
+      stage: 'script_agency_review',
+      script_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.filterCategory).toBe('rejected')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 12. Script brand rejected
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — script brand rejected', () => {
+  it('scriptStage.brand should be "error"', () => {
+    const task = mockTask({
+      stage: 'script_brand_review',
+      script_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.brand).toBe('error')
+  })
+
+  it('scriptColor should be "red" when brand is error', () => {
+    const task = mockTask({
+      stage: 'script_brand_review',
+      script_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptColor).toBe('red')
+  })
+
+  it('filterCategory should be "rejected"', () => {
+    const task = mockTask({
+      stage: 'script_brand_review',
+      script_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.filterCategory).toBe('rejected')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 13. Video agency rejected
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — video agency rejected', () => {
+  it('videoStage.agency should be "error"', () => {
+    const task = mockTask({
+      stage: 'video_agency_review',
+      video_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.agency).toBe('error')
+  })
+
+  it('videoColor should be "red" when video agency is error', () => {
+    const task = mockTask({
+      stage: 'video_agency_review',
+      video_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoColor).toBe('red')
+  })
+
+  it('filterCategory should be "rejected"', () => {
+    const task = mockTask({
+      stage: 'video_agency_review',
+      video_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.filterCategory).toBe('rejected')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 13b. Video brand rejected
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — video brand rejected', () => {
+  it('videoStage.brand should be "error"', () => {
+    const task = mockTask({
+      stage: 'video_brand_review',
+      video_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.brand).toBe('error')
+  })
+
+  it('videoColor should be "red"', () => {
+    const task = mockTask({
+      stage: 'video_brand_review',
+      video_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoColor).toBe('red')
+  })
+
+  it('filterCategory should be "rejected"', () => {
+    const task = mockTask({
+      stage: 'video_brand_review',
+      video_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.filterCategory).toBe('rejected')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 14. filterCategory across different stages
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — filterCategory for different stages', () => {
+  const cases: Array<{ stage: TaskStage; expected: string; desc: string }> = [
+    { stage: 'script_upload', expected: 'pending', desc: 'script_upload => pending' },
+    { stage: 'video_upload', expected: 'pending', desc: 'video_upload => pending' },
+    { stage: 'script_ai_review', expected: 'reviewing', desc: 'script_ai_review => reviewing' },
+    { stage: 'script_agency_review', expected: 'reviewing', desc: 'script_agency_review => reviewing' },
+    { stage: 'script_brand_review', expected: 'reviewing', desc: 'script_brand_review => reviewing' },
+    { stage: 'video_ai_review', expected: 'reviewing', desc: 'video_ai_review => reviewing' },
+    { stage: 'video_agency_review', expected: 'reviewing', desc: 'video_agency_review => reviewing' },
+    { stage: 'video_brand_review', expected: 'reviewing', desc: 'video_brand_review => reviewing' },
+    { stage: 'completed', expected: 'completed', desc: 'completed => completed' },
+    { stage: 'rejected', expected: 'rejected', desc: 'rejected => rejected' },
+  ]
+
+  cases.forEach(({ stage, expected, desc }) => {
+    it(desc, () => {
+      const task = mockTask({ stage })
+      const ui = mapTaskToUI(task)
+      expect(ui.filterCategory).toBe(expected)
+    })
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 15. Rejection override: any rejected status forces filterCategory to rejected
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — rejection status overrides filterCategory', () => {
+  it('video_brand_review with script_agency_status=rejected => filterCategory=rejected', () => {
+    const task = mockTask({
+      stage: 'video_brand_review',
+      script_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.filterCategory).toBe('rejected')
+  })
+
+  it('video_ai_review with video_agency_status=rejected => filterCategory=rejected', () => {
+    const task = mockTask({
+      stage: 'video_ai_review',
+      video_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.filterCategory).toBe('rejected')
+  })
+
+  it('completed stage ignores past rejections (filterCategory stays completed)', () => {
+    // The source code: if (stage !== 'completed') filterCategory = 'rejected'
+    const task = mockTask({
+      stage: 'completed',
+      script_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.filterCategory).toBe('completed')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 16. statusToStep — internal mapping via statusToStep through mapTaskToUI
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — statusToStep mapping via agency/brand statuses', () => {
+  it('force_passed maps to done', () => {
+    const task = mockTask({
+      stage: 'script_brand_review',
+      script_brand_status: 'force_passed',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.brand).toBe('done')
+  })
+
+  it('processing maps to current', () => {
+    const task = mockTask({
+      stage: 'video_brand_review',
+      video_brand_status: 'processing',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.brand).toBe('current')
+  })
+
+  it('null status defaults to current (pending fallback to current)', () => {
+    const task = mockTask({
+      stage: 'video_agency_review',
+      video_agency_status: null,
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.agency).toBe('current')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 17. Color logic
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — color logic', () => {
+  it('scriptColor is "green" when script brand is done and no errors', () => {
+    const task = mockTask({ stage: 'video_upload' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptColor).toBe('green')
+  })
+
+  it('scriptColor is "blue" when script brand is not yet done and no errors', () => {
+    const task = mockTask({ stage: 'script_ai_review' })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptColor).toBe('blue')
+  })
+
+  it('scriptColor is "red" when script agency has error', () => {
+    const task = mockTask({
+      stage: 'script_agency_review',
+      script_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptColor).toBe('red')
+  })
+
+  it('scriptColor is "red" when script brand has error', () => {
+    const task = mockTask({
+      stage: 'script_brand_review',
+      script_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptColor).toBe('red')
+  })
+
+  it('videoColor is "green" when completed', () => {
+    const task = mockTask({ stage: 'completed' })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoColor).toBe('green')
+  })
+
+  it('videoColor is "blue" when video is in progress with no errors', () => {
+    const task = mockTask({ stage: 'video_ai_review' })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoColor).toBe('blue')
+  })
+
+  it('videoColor is "red" when video brand has error', () => {
+    const task = mockTask({
+      stage: 'video_brand_review',
+      video_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoColor).toBe('red')
+  })
+})
+
+// ---------------------------------------------------------------------------
+// 18. Edge case: rejected stage with various rejection sources
+// ---------------------------------------------------------------------------
+describe('mapTaskToUI — rejected stage with rejection source details', () => {
+  it('rejected stage with script_brand_status=rejected shows error on script brand', () => {
+    const task = mockTask({
+      stage: 'rejected',
+      script_brand_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.scriptStage.brand).toBe('error')
+    expect(ui.scriptColor).toBe('red')
+  })
+
+  it('rejected stage with video_agency_status=rejected shows error on video agency', () => {
+    const task = mockTask({
+      stage: 'rejected',
+      video_agency_status: 'rejected',
+    })
+    const ui = mapTaskToUI(task)
+    expect(ui.videoStage.agency).toBe('error')
+    expect(ui.videoColor).toBe('red')
+  })
+})