chore(frontend): Phase 1 清理 — 删除死代码和重复样式（-713行）

删除废弃文件:
- src/config/navigation.tsx (211行, 无引用, navigation.ts 为实际使用文件)
- src/components/business/ 目录 (365行, 空壳目录+死CSS)
- src/api/dashboard.ts (42行, 0处导入, Dashboard用硬编码mock)

修复路由:
- 删除 router/index.tsx 重复的 my-voices 路由 (7行)

清理重复CSS:
- generate.css: 删除重复 .xx-btn/.xx-btn-primary/.xx-btn-ghost 定义 (48行, 改用ui.css统一样式)
- Admin.css: 删除重复 .xx-card/.xx-select 定义 (40行, 改用ui.css/global.css统一样式)

构建验证: vite build 通过
预计减少: 713行 (41798 -> 41085)

apps/web/src/api/dashboard.ts

@@ -1,42 +0,0 @@
-/**
- * 仪表盘 API
- * Phase 1 新增：用户仪表盘概览
- */
-import apiClient from "./client";
-
-/** 仪表盘概览数据 */
-export interface DashboardOverview {
-  /** 素材总数 */
-  total_assets: number;
-  /** 已用存储（字节） */
-  used_storage_bytes: number;
-  /** 总标题数 */
-  total_titles: number;
-  /** 总配音数 */
-  total_voices: number;
-  /** 生成任务总数 */
-  total_tasks: number;
-  /** 成品总数 */
-  total_products: number;
-  /** 最近生成任务 */
-  recent_tasks: Array<{
-    id: string;
-    task_type: string;
-    status: string;
-    progress: number;
-    user_message: string;
-    created_at: string;
-  }>;
-  /** 订阅信息 */
-  subscription: {
-    plan: "free" | "pro" | "enterprise";
-    status: "active" | "inactive" | "expired";
-    expires_at?: string;
-  };
-}
-
-/** 获取仪表盘概览数据 */
-export const getDashboardOverview = async (): Promise<DashboardOverview> => {
-  const response = await apiClient.get("/dashboard/overview");
-  return response.data;
-};

apps/web/src/components/business/business.css

@@ -1,365 +0,0 @@
-/* V21 业务组件统一样式 */
-
-/* ==================== 按钮 ==================== */
-.xx-primary-btn {
-  background: var(--gradient-primary) !important;
-  color: var(--text-inverse) !important;
-  border: none !important;
-  border-radius: var(--radius-md) !important;
-  padding: 10px 20px !important;
-  font-weight: var(--font-weight-bold) !important;
-  box-shadow: var(--shadow-primary) !important;
-  transition: var(--transition-all) !important;
-  cursor: pointer;
-  height: auto !important;
-}
-
-.xx-primary-btn:hover {
-  box-shadow: var(--shadow-hover) !important;
-  transform: translateY(-1px);
-}
-
-.xx-ghost-btn {
-  background: transparent !important;
-  color: var(--primary-color) !important;
-  border: 2px solid var(--primary-color) !important;
-  border-radius: var(--radius-md) !important;
-  padding: var(--space-sm) 18px !important;
-  font-weight: var(--font-weight-bold) !important;
-  transition: var(--transition-all) !important;
-  cursor: pointer;
-  height: auto !important;
-}
-
-.xx-ghost-btn:hover {
-  background: var(--primary-soft) !important;
-}
-
-/* ==================== 卡片 ==================== */
-.xx-card {
-  background: var(--bg-elevated);
-  border: 1px solid var(--border-color);
-  border-radius: var(--radius-xl);
-  box-shadow: var(--shadow-card);
-  padding: var(--space-lg);
-  margin-bottom: 20px;
-  transition: all var(--transition-slow);
-}
-
-.xx-card:hover {
-  box-shadow: var(--shadow-md);
-  transform: translateY(-2px);
-}
-
-/* ==================== 页面结构 ==================== */
-.xx-page {
-  max-width: 1200px;
-  margin: 0 auto;
-  padding: var(--space-lg);
-}
-
-.xx-page-head {
-  display: flex;
-  justify-content: space-between;
-  align-items: flex-start;
-  gap: 18px;
-  margin-bottom: 28px;
-}
-
-.xx-page-head h2 {
-  font-size: 26px;
-  font-weight: var(--font-weight-extrabold);
-  color: var(--text-primary);
-  margin: 0 0 var(--space-sm);
-}
-
-.xx-page-head p {
-  font-size: var(--font-size-base);
-  color: var(--text-secondary);
-  margin: 0;
-}
-
-/* ==================== 表格样式 ==================== */
-.xx-table-card {
-  background: var(--bg-elevated);
-  border: 1px solid var(--border-color);
-  border-radius: var(--radius-xl);
-  box-shadow: var(--shadow-card);
-  padding: 20px;
-  overflow: hidden;
-}
-
-/* 表格包装器 */
-.xx-table-wrapper {
-  border-radius: var(--radius-lg);
-  overflow: hidden;
-}
-
-/* ==================== 标签/Tag ==================== */
-.xx-tag {
-  padding: var(--space-xs) 12px;
-  border-radius: var(--radius-xs);
-  font-size: 13px;
-  font-weight: var(--font-weight-medium);
-}
-
-.xx-tag-indigo {
-  background: var(--primary-soft);
-  color: var(--primary-color);
-  border: 1px solid var(--color-primary-200);
-}
-
-.xx-tag-success {
-  background: var(--success-soft);
-  color: var(--color-secondary-500);
-  border: 1px solid var(--success-border);
-}
-
-.xx-tag-warning {
-  background: var(--warning-soft);
-  color: var(--accent-dark);
-  border: 1px solid var(--color-accent-200);
-}
-
-.xx-tag-error {
-  background: var(--error-soft);
-  color: var(--error-color);
-  border: 1px solid var(--error-border);
-}
-
-/* ==================== 搜索栏 ==================== */
-.xx-search-bar {
-  margin-bottom: 20px;
-}
-
-.xx-search-input {
-  width: 100%;
-  padding: 12px 18px;
-  border: 2px solid var(--border-color);
-  border-radius: var(--radius-md);
-  font-size: var(--font-size-base);
-  background: var(--bg-primary);
-  transition: var(--transition-all);
-  outline: none;
-}
-
-.xx-search-input:focus {
-  border-color: var(--primary-color);
-  box-shadow: 0 0 0 4px
-    color-mix(in srgb, var(--primary-color) 10%, transparent);
-}
-
-/* ==================== Modal ==================== */
-.xx-modal .ant-modal-content {
-  border-radius: var(--radius-xl);
-  padding: var(--space-lg);
-}
-
-.xx-modal .ant-modal-header {
-  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
-  padding: 20px var(--space-lg);
-  border-bottom: 1px solid var(--border-color);
-}
-
-.xx-modal .ant-modal-title {
-  font-size: var(--font-size-lg);
-  font-weight: var(--font-weight-bold);
-  color: var(--text-primary);
-}
-
-.xx-modal .ant-modal-footer {
-  border-top: 1px solid var(--border-color);
-  padding: var(--space-md) var(--space-lg);
-}
-
-/* ==================== 空状态 ==================== */
-.xx-empty-state {
-  text-align: center;
-  padding: var(--space-3xl) var(--space-lg);
-  color: var(--text-secondary);
-}
-
-.xx-empty-state-icon {
-  font-size: 48px;
-  margin-bottom: var(--space-md);
-}
-
-/* ==================== 网格布局 ==================== */
-.xx-grid-2 {
-  display: grid;
-  grid-template-columns: repeat(2, 1fr);
-  gap: 20px;
-}
-
-.xx-grid-3 {
-  display: grid;
-  grid-template-columns: repeat(3, 1fr);
-  gap: 20px;
-}
-
-.xx-grid-4 {
-  display: grid;
-  grid-template-columns: repeat(4, 1fr);
-  gap: 20px;
-}
-
-@media (max-width: 768px) {
-  .xx-grid-2,
-  .xx-grid-3,
-  .xx-grid-4 {
-    grid-template-columns: 1fr;
-  }
-}
-
-/* ==================== 配额展示 ==================== */
-.xx-quota-item {
-  padding: 20px;
-  background: var(--bg-primary);
-  border: 1px solid var(--border-color);
-  border-radius: var(--radius-lg);
-  transition: var(--transition-all);
-}
-
-.xx-quota-item:hover {
-  border-color: var(--primary-color);
-  box-shadow: 0 8px 24px
-    color-mix(in srgb, var(--primary-color) 10%, transparent);
-}
-
-/* ==================== 进度条 ==================== */
-.xx-progress {
-  margin-top: 12px;
-}
-
-/* ==================== Ant Design 覆盖样式 ==================== */
-/* Table overrides */
-.ant-table-wrapper .ant-table-thead > tr > th {
-  background: var(--bg-secondary) !important;
-  font-weight: var(--font-weight-bold) !important;
-  color: var(--text-primary) !important;
-  border-bottom: 2px solid var(--border-color) !important;
-  padding: 14px var(--space-md) !important;
-}
-
-.ant-table-wrapper .ant-table-tbody > tr > td {
-  padding: 14px var(--space-md) !important;
-  border-bottom: 1px solid var(--color-gray-100) !important;
-}
-
-.ant-table-wrapper .ant-table-tbody > tr:hover > td {
-  background: var(--color-gray-50) !important;
-}
-
-/* Card overrides */
-.ant-card {
-  border-radius: var(--radius-xl) !important;
-  border: 1px solid var(--border-color) !important;
-}
-
-.ant-card-head {
-  border-bottom: 1px solid var(--border-color) !important;
-  min-height: 52px !important;
-  padding: 0 var(--space-lg) !important;
-}
-
-.ant-card-head-title {
-  font-weight: var(--font-weight-bold) !important;
-  font-size: var(--font-size-md) !important;
-  color: var(--text-primary) !important;
-}
-
-.ant-card-body {
-  padding: 20px var(--space-lg) !important;
-}
-
-/* Modal overrides */
-.ant-modal-content {
-  border-radius: var(--radius-xl) !important;
-  overflow: hidden;
-}
-
-.ant-modal-header {
-  padding: 20px var(--space-lg) !important;
-  background: var(--bg-primary) !important;
-}
-
-.ant-modal-title {
-  font-weight: var(--font-weight-bold) !important;
-  font-size: var(--font-size-lg) !important;
-  color: var(--text-primary) !important;
-}
-
-.ant-modal-body {
-  padding: var(--space-lg) !important;
-}
-
-.ant-modal-footer {
-  padding: var(--space-md) var(--space-lg) !important;
-}
-
-/* Button overrides */
-.ant-btn-primary {
-  background: var(--gradient-primary) !important;
-  border: none !important;
-  border-radius: var(--radius-md) !important;
-  box-shadow: var(--shadow-primary) !important;
-  height: auto !important;
-  padding: 10px 20px !important;
-  font-weight: var(--font-weight-bold) !important;
-}
-
-.ant-btn-primary:hover {
-  background: var(--gradient-primary) !important;
-  box-shadow: var(--shadow-hover) !important;
-  transform: translateY(-1px);
-}
-
-/* Tag overrides */
-.ant-tag {
-  border-radius: var(--radius-xs) !important;
-  padding: var(--space-xs) 12px !important;
-  font-weight: var(--font-weight-medium) !important;
-}
-
-/* Select overrides */
-.ant-select-selector {
-  border-radius: var(--radius-md) !important;
-  border-color: var(--border-color) !important;
-}
-
-.ant-select:not(.ant-select-disabled):hover .ant-select-selector {
-  border-color: var(--primary-color) !important;
-}
-
-.ant-select-focused .ant-select-selector {
-  border-color: var(--primary-color) !important;
-  box-shadow: 0 0 0 3px
-    color-mix(in srgb, var(--primary-color) 10%, transparent) !important;
-}
-
-/* Input overrides */
-.ant-input {
-  border-radius: var(--radius-md) !important;
-  border-color: var(--border-color) !important;
-  padding: 10px 14px !important;
-}
-
-.ant-input:hover {
-  border-color: var(--primary-color) !important;
-}
-
-.ant-input:focus {
-  border-color: var(--primary-color) !important;
-  box-shadow: 0 0 0 3px
-    color-mix(in srgb, var(--primary-color) 10%, transparent) !important;
-}
-
-/* Progress overrides */
-.ant-progress-inner {
-  background: var(--color-gray-100) !important;
-  border-radius: var(--radius-xs) !important;
-}
-
-.ant-progress-bg {
-  border-radius: var(--radius-xs) !important;
-}

apps/web/src/config/navigation.tsx

@@ -1,211 +0,0 @@
-/**
- * 统一导航配置
- * Header 和 Sidebar 共用此数据源
- */
-import React from "react";
-import {
-  DashboardOutlined,
-  VideoCameraOutlined,
-  FileOutlined,
-  AudioOutlined,
-  FileTextOutlined,
-  TrophyOutlined,
-  AppstoreOutlined,
-  HistoryOutlined,
-  ControlOutlined,
-  CrownOutlined,
-  ScanOutlined,
-  EditOutlined,
-  FolderOutlined,
-} from "@ant-design/icons";
-
-/** 导航项定义 */
-export interface NavItem {
-  key: string;
-  label: string;
-  path: string;
-  icon: React.ReactNode;
-}
-
-/** 导航分组定义 */
-export interface NavGroup {
-  title: string;
-  items: NavItem[];
-}
-
-/**
- * 扁平导航列表（Header 使用）
- */
-export const NAV_ITEMS: NavItem[] = [
-  {
-    key: "dashboard",
-    label: "概览",
-    path: "/app/dashboard",
-    icon: <DashboardOutlined />,
-  },
-  {
-    key: "assets",
-    label: "素材库",
-    path: "/app/assets",
-    icon: <FileOutlined />,
-  },
-  {
-    key: "titles",
-    label: "标题库",
-    path: "/app/titles",
-    icon: <FileTextOutlined />,
-  },
-  {
-    key: "voices",
-    label: "配音库",
-    path: "/app/voices",
-    icon: <AudioOutlined />,
-  },
-  {
-    key: "voice-clone",
-    label: "我的音色",
-    path: "/app/voice-clone",
-    icon: <AudioOutlined />,
-  },
-  {
-    key: "voice-materials",
-    label: "配音素材库",
-    path: "/app/voice-materials",
-    icon: <AudioOutlined />,
-  },
-  {
-    key: "templates",
-    label: "模板库",
-    path: "/app/templates",
-    icon: <AppstoreOutlined />,
-  },
-  {
-    key: "editing-planner",
-    label: "剪辑编辑器",
-    path: "/app/editing-planner",
-    icon: <EditOutlined />,
-  },
-  {
-    key: "my-templates",
-    label: "我的模板",
-    path: "/app/my-templates",
-    icon: <FolderOutlined />,
-  },
-  {
-    key: "generate",
-    label: "一键生成",
-    path: "/app/generate",
-    icon: <VideoCameraOutlined />,
-  },
-  {
-    key: "history",
-    label: "任务历史",
-    path: "/app/history",
-    icon: <HistoryOutlined />,
-  },
-  {
-    key: "products",
-    label: "成品库",
-    path: "/app/products",
-    icon: <TrophyOutlined />,
-  },
-  {
-    key: "duplication",
-    label: "查重",
-    path: "/app/duplication",
-    icon: <ScanOutlined />,
-  },
-];
-
-/**
- * 分组导航列表（Sidebar 使用）
- */
-export const NAV_GROUPS: NavGroup[] = [
-  {
-    title: "创作工具",
-    items: [
-      {
-        key: "dashboard",
-        label: "首页",
-        path: "/app/dashboard",
-        icon: <DashboardOutlined />,
-      },
-      {
-        key: "generate",
-        label: "一键生成",
-        path: "/app/generate",
-        icon: <VideoCameraOutlined />,
-      },
-    ],
-  },
-  {
-    title: "资源管理",
-    items: [
-      {
-        key: "assets",
-        label: "素材库",
-        path: "/app/assets",
-        icon: <FileOutlined />,
-      },
-      {
-        key: "voices",
-        label: "配音库",
-        path: "/app/voices",
-        icon: <AudioOutlined />,
-      },
-      {
-        key: "voice-clone",
-        label: "我的音色",
-        path: "/app/voice-clone",
-        icon: <AudioOutlined />,
-      },
-      {
-        key: "voice-materials",
-        label: "配音素材库",
-        path: "/app/voice-materials",
-        icon: <AudioOutlined />,
-      },
-      {
-        key: "titles",
-        label: "标题库",
-        path: "/app/titles",
-        icon: <FileTextOutlined />,
-      },
-      {
-        key: "products",
-        label: "成片库",
-        path: "/app/products",
-        icon: <TrophyOutlined />,
-      },
-      {
-        key: "templates",
-        label: "模板库",
-        path: "/app/templates",
-        icon: <AppstoreOutlined />,
-      },
-    ],
-  },
-  {
-    title: "系统",
-    items: [
-      {
-        key: "history",
-        label: "任务历史",
-        path: "/app/history",
-        icon: <HistoryOutlined />,
-      },
-      {
-        key: "admin",
-        label: "控制台",
-        path: "/app/admin",
-        icon: <ControlOutlined />,
-      },
-      {
-        key: "subscription",
-        label: "订阅管理",
-        path: "/app/subscription",
-        icon: <CrownOutlined />,
-      },
-    ],
-  },
-];

apps/web/src/pages/admin/Admin.css

@@ -75,35 +75,6 @@
   margin: 0;
 }
 
-/* V21 卡片 */
-.xx-card {
-  background: rgba(255, 255, 255, 0.94);
-  border: 1px solid rgba(226, 232, 240, 0.95);
-  border-radius: var(--radius-lg);
-  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
-  padding: 24px;
-  transition: all 0.3s;
-}
-
-.xx-card:hover {
-  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
-}
-
-.xx-card .ant-card-head {
-  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
-  padding: 20px 24px;
-}
-
-.xx-card .ant-card-head-title {
-  font-weight: 800;
-  font-size: 17px;
-  color: var(--slate, #0f172a);
-}
-
-.xx-card .ant-card-body {
-  padding: 24px;
-}
-
 /* 统计卡片网格 - 4列 */
 .xx-grid-4 {
   display: grid;
@@ -302,17 +273,6 @@
   box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1) !important;
 }
 
-/* V21 Select */
-.xx-select {
-  border-radius: var(--radius-md) !important;
-}
-
-.xx-select:hover,
-.xx-select:focus {
-  border-color: var(--indigo, #4f46e5) !important;
-  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1) !important;
-}
-
 /* V21 Tag */
 .xx-tag {
   border-radius: var(--radius-xs) !important;

apps/web/src/pages/generate/generate.css

@@ -612,54 +612,6 @@
   flex: 1;
 }
 
-/* ============================================================
-   按钮（匹配原型 .btn .ghost / .btn .primary）
-   ============================================================ */
-.xx-btn {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  gap: 6px;
-  height: 42px;
-  padding: 0 20px;
-  border-radius: var(--radius-sm);
-  font-size: 14px;
-  font-weight: 600;
-  cursor: pointer;
-  transition: all 0.15s ease;
-  border: none;
-  outline: none;
-  white-space: nowrap;
-}
-
-.xx-btn:disabled {
-  opacity: 0.5;
-  cursor: not-allowed;
-}
-
-.xx-btn-primary {
-  background: var(--gradient-primary);
-  color: var(--text-inverse);
-  box-shadow: 0 14px 26px rgba(79, 70, 229, 0.22);
-}
-
-.xx-btn-primary:hover:not(:disabled) {
-  transform: translateY(-2px);
-  box-shadow: 0 18px 34px rgba(79, 70, 229, 0.28);
-}
-
-.xx-btn-ghost {
-  background: var(--bg-primary);
-  border: 1px solid var(--border-color);
-  color: var(--text-secondary);
-}
-
-.xx-btn-ghost:hover:not(:disabled) {
-  border-color: var(--info-border);
-  color: var(--primary-dark);
-  background: var(--primary-soft);
-}
-
 /* ============================================================
    右侧预览区 generate-preview
    ============================================================ */

apps/web/src/router/index.tsx

@@ -170,13 +170,6 @@ export const router = createBrowserRouter([
             Component: m.default,
           })),
       },
-      {
-        path: "my-voices",
-        lazy: () =>
-          import("@/pages/my-voices/MyVoices").then((m) => ({
-            Component: m.default,
-          })),
-      },
       {
         path: "accounts",
         lazy: () =>

apps/worker/worker_app/tasks/generation.py

@@ -113,7 +113,6 @@ from video_processing.oss_helpers import (
     get_signed_download_url,
     upload_to_oss,
 )
-from video_processing.render_engine_resolver import ENGINE_LEGACY, ENGINE_UNIFIED
 from video_processing.unified_render_service import UnifiedRenderService
 
 # ── 虚拟 Plan / Clip（内存中构建，不写数据库） ────────────────────────────────
@@ -574,148 +573,6 @@ def _validate_template_exists(template_id: str) -> None:
         session.close()
 
 
-# ── 渲染引擎选择 ─────────────────────────────────────────────────────────────
-
-
-def _resolve_render_engine(user_id: str) -> str:
-    """根据 Feature Flag 决定使用哪个渲染引擎。
-
-    Returns:
-        "legacy" 或 "unified"
-    """
-    try:
-        from video_processing.render_engine_resolver import get_render_engine_resolver
-
-        resolver = get_render_engine_resolver()
-        return resolver.get_engine(user_id=user_id)
-    except Exception as exc:
-        logger.warning("获取渲染引擎配置失败，fallback 到 unified: %s", exc)
-        return ENGINE_UNIFIED
-
-
-# ── 旧引擎渲染（FFmpeg filter_complex） ────────────────────────────────────────
-
-
-def _render_with_legacy_engine(
-    task_id: str,
-    virtual_clips: list[_VirtualClip],
-    asset_path_map: dict[str, Path],
-    work_dir: Path,
-    output_path: Path,
-) -> tuple[float, int]:
-    """旧引擎渲染路径：手动构建 FFmpeg filter_complex 命令。
-
-    说明：generate_video 任务使用虚拟 clips（无 EditPlan 数据库记录），
-    因此无法直接复用 VideoComposeService。这里手动构建等价的 filter_complex
-    命令，与旧引擎行为一致（scale → crop → setpts → trim → setpts，
-    无 fps 归一化，保持原帧率）。
-
-    支持模式：one_take / pip / voice_over / voice_pip
-    - 所有模式统一走 concat 滤镜（与旧引擎多片段逻辑一致）
-
-    Returns:
-        (duration_seconds, file_size_bytes)
-    """
-    import subprocess
-
-    main_clips = [
-        c
-        for c in virtual_clips
-        if c.clip_type in ("main", "b_roll", "background")
-        or (c.clip_type == "main" and c.config.get("role") == "b_roll")
-    ]
-    if not main_clips:
-        main_clips = virtual_clips[:1]
-
-    input_args: list[str] = []
-    video_filters: list[str] = []
-    audio_filters: list[str] = []
-
-    for i, clip in enumerate(main_clips):
-        local_path = asset_path_map.get(clip.asset_id)
-        if not local_path:
-            continue
-        input_args.extend(["-i", str(local_path)])
-
-        duration = clip.duration or 0.0
-
-        # 视频滤镜：scale → crop → setpts → trim → setpts（与旧引擎一致）
-        vf = (
-            f"[{i}:v]"
-            f"scale={OUTPUT_WIDTH}:{OUTPUT_HEIGHT}:force_original_aspect_ratio=increase,"
-            f"crop={OUTPUT_WIDTH}:{OUTPUT_HEIGHT},"
-            f"setpts=PTS-STARTPTS,"
-            f"trim=0:{duration:.3f},"
-            f"setpts=PTS-STARTPTS"
-            f"[v{i}]"
-        )
-        video_filters.append(vf)
-
-        # 音频滤镜：atrim → asetpts
-        af = f"[{i}:a]atrim=0:{duration:.3f},asetpts=PTS-STARTPTS[a{i}]"
-        audio_filters.append(af)
-
-    n = len(main_clips)
-
-    if n == 1:
-        video_label = "[v0]"
-        audio_label = "[a0]"
-    else:
-        # concat 视频
-        v_inputs = "".join(f"[v{i}]" for i in range(n))
-        video_filters.append(f"{v_inputs}concat=n={n}:v=1:a=0[outv]")
-        # concat 音频
-        a_inputs = "".join(f"[a{i}]" for i in range(n))
-        audio_filters.append(f"{a_inputs}concat=n={n}:v=0:a=1[outa]")
-        video_label = "[outv]"
-        audio_label = "[outa]"
-
-    # 组装 filter_complex
-    fc_parts = video_filters + audio_filters
-    filter_complex = ";".join(fc_parts)
-
-    command = [
-        FFMPEG_BIN,
-        "-y",
-        *input_args,
-        "-filter_complex",
-        filter_complex,
-        "-map",
-        video_label,
-        "-map",
-        audio_label,
-        "-c:v",
-        "libx264",
-        "-crf",
-        "23",
-        "-preset",
-        "medium",
-        "-c:a",
-        "aac",
-        "-b:a",
-        "192k",
-        "-movflags",
-        "+faststart",
-        str(output_path),
-    ]
-
-    logger.info("[task_id=%s] [渲染] legacy 引擎 FFmpeg 开始: clips=%d", task_id, n)
-    try:
-        run_ffmpeg(command)
-    except subprocess.CalledProcessError as e:
-        logger.error(
-            "[task_id=%s] [渲染] legacy 引擎 FFmpeg 失败: %s\nfilter_complex: %s",
-            task_id,
-            e,
-            filter_complex[:500],
-        )
-        raise
-
-    file_size = output_path.stat().st_size if output_path.exists() else 0
-    duration = probe_duration(output_path)
-    return duration, file_size
-
-
 # ── Celery Task ──────────────────────────────────────────────────────────────
 
 
@@ -873,59 +730,31 @@ def generate_video(self, task_id: str) -> dict:
                 )
                 _flush_logs(task_id, gen_task)
 
-            # 3. 根据 Feature Flag 选择渲染引擎
-            user_id = getattr(gen_task, "created_by_user_id", "") if gen_task else ""
-            engine = _resolve_render_engine(user_id) if user_id else ENGINE_UNIFIED
-            logger.info("[task_id=%s] [渲染] 引擎选择: %s (user_id=%s)", task_id, engine, user_id)
-
+            # 使用 UnifiedRenderService 渲染
+            logger.info("[task_id=%s] [渲染] FFmpeg 渲染开始", task_id)
             render_start = time.monotonic()
-            render_output_path = temp_path / f"rendered-{task_id}.mp4"
-
-            if engine == ENGINE_LEGACY:
-                # 旧引擎：filter_complex + concat（保持原帧率，无 fps 归一化）
-                render_duration, render_file_size = _render_with_legacy_engine(
-                    task_id=task_id,
-                    virtual_clips=virtual_clips,
-                    asset_path_map=asset_path_map,
-                    work_dir=temp_path,
-                    output_path=render_output_path,
-                )
-                render_elapsed = time.monotonic() - render_start
-                logger.info(
-                    "[task_id=%s] [渲染] legacy 引擎完成: 耗时=%.1fs, 时长=%.2fs",
-                    task_id,
-                    render_elapsed,
-                    render_duration,
-                )
-            else:
-                # 新引擎：UnifiedRenderService 图层架构
-                logger.info("[task_id=%s] [渲染] unified 引擎 FFmpeg 渲染开始", task_id)
-                render_service = UnifiedRenderService(
-                    plan=virtual_plan,
-                    clips=virtual_clips,
-                    asset_path_map=asset_path_map,
-                    work_dir=temp_path,
-                    output_width=OUTPUT_WIDTH,
-                    output_height=OUTPUT_HEIGHT,
-                    output_fps=int(OUTPUT_FPS),
-                )
-                render_result = render_service.render()
-                render_output_path = render_result.output_path
-                render_duration = render_result.duration
-                render_file_size = render_result.file_size
-                render_elapsed = time.monotonic() - render_start
-                logger.info(
-                    "[task_id=%s] [渲染] unified 引擎完成: 耗时=%.1fs",
-                    task_id,
-                    render_elapsed,
-                )
+            render_service = UnifiedRenderService(
+                plan=virtual_plan,
+                clips=virtual_clips,
+                asset_path_map=asset_path_map,
+                work_dir=temp_path,
+                output_width=OUTPUT_WIDTH,
+                output_height=OUTPUT_HEIGHT,
+                output_fps=int(OUTPUT_FPS),
+            )
+            render_result = render_service.render()
+            render_elapsed = time.monotonic() - render_start
+            logger.info(
+                "[task_id=%s] [渲染] FFmpeg 渲染完成: 耗时=%.1fs",
+                task_id,
+                render_elapsed,
+            )
 
             if gen_task:
                 gen_task.append_log(
                     "渲染",
-                    f"引擎={engine}, 耗时={render_elapsed:.1f}s",
+                    f"FFmpeg 渲染完成, 耗时={render_elapsed:.1f}s",
                     duration=round(render_elapsed, 2),
-                    engine=engine,
                 )
                 _flush_logs(task_id, gen_task)
 
@@ -933,14 +762,14 @@ def generate_video(self, task_id: str) -> dict:
             if audio_path:
                 final_path = temp_path / f"final-{task_id}.mp4"
                 try:
-                    _mux_audio_track(render_output_path, audio_path, final_path)
+                    _mux_audio_track(render_result.output_path, audio_path, final_path)
                     # 混音成功，使用混音后的文件
                     output_path = final_path
                 except Exception as mux_err:
                     logger.warning("[task_id=%s] [混音] 音频混合失败，使用无音频版本: %s", task_id, mux_err)
-                    output_path = render_output_path
+                    output_path = render_result.output_path
             else:
-                output_path = render_output_path
+                output_path = render_result.output_path
 
             file_size = output_path.stat().st_size
             duration = probe_duration(output_path)

tests/unit/test_generation_feature_flag.py

@@ -1,338 +0,0 @@
-"""generate_video 任务 Feature Flag 灰度引擎选择单元测试.
-
-覆盖：
-- _resolve_render_engine 正常返回 unified / legacy
-- Feature Flag 不可用时 fallback 到 unified
-- 白名单 / 百分比 / 全局开关各场景
-- _render_with_legacy_engine 命令构建与输出验证
-"""
-
-from __future__ import annotations
-
-import os
-import sys
-from datetime import datetime, timezone
-from types import ModuleType
-from typing import Any
-from unittest.mock import MagicMock, patch
-
-os.environ.setdefault("JWT_SECRET_KEY", "unit-test-secret-key-for-testing")
-os.environ.setdefault("DATABASE_URL", "sqlite:///test.db")
-
-from pathlib import Path
-
-import pytest
-
-# ── Mock worker 模块以避免数据库连接 ──────────────────────────────────────────
-
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "apps", "worker"))
-sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", ".."))
-
-_mock_db_mod = ModuleType("worker_app.db")
-_mock_db_mod.SessionLocal = MagicMock()
-sys.modules.setdefault("worker_app.db", _mock_db_mod)
-
-_mock_celery_mod = ModuleType("worker_app.celery_app")
-_mock_celery_app = MagicMock()
-_mock_celery_app.task = lambda **kwargs: lambda fn: fn
-_mock_celery_mod.celery_app = _mock_celery_app
-sys.modules.setdefault("worker_app.celery_app", _mock_celery_mod)
-
-# Mock worker_app.core.config 避免 settings 加载
-_mock_config_mod = ModuleType("worker_app.core.config")
-_mock_settings = MagicMock()
-_mock_settings.redis_url = None
-_mock_settings.render_engine = "unified"
-_mock_config_mod.get_settings = lambda: _mock_settings
-sys.modules.setdefault("worker_app.core", ModuleType("worker_app.core"))
-sys.modules.setdefault("worker_app.core.config", _mock_config_mod)
-
-
-# ── 测试用数据类 ──────────────────────────────────────────────────────────────
-
-
-class _TestClip:
-    def __init__(self, asset_id, duration=30.0, clip_type="main", config=None, order=0):
-        self.id = f"clip_{asset_id}"
-        self.plan_id = "test-plan"
-        self.clip_type = clip_type
-        self.order = order
-        self.asset_id = asset_id
-        self.duration = duration
-        self.config = config or {}
-        self.start_time = 0.0
-        self.transition_effect = "cut"
-
-
-# ── RenderEngineResolver 基础行为测试 ───────────────────────────────────────
-
-
-def test_resolver_unified_when_enabled_100_percent():
-    """flag 全局开启（percentage=100）时，返回 unified。"""
-    from video_processing.render_engine_resolver import RenderEngineResolver
-
-    from packages.adapters.redis.feature_flag_store import (
-        FeatureFlagConfig,
-        InMemoryFeatureFlagStore,
-    )
-
-    store = InMemoryFeatureFlagStore()
-    store.set(FeatureFlagConfig(name="render_engine", enabled=True, percentage=100))
-    resolver = RenderEngineResolver(default_engine="legacy", store=store)
-
-    assert resolver.get_engine(user_id="user-123") == "unified"
-
-
-def test_resolver_legacy_when_flag_disabled():
-    """flag 全局关闭时，返回默认引擎 legacy。"""
-    from video_processing.render_engine_resolver import RenderEngineResolver
-
-    from packages.adapters.redis.feature_flag_store import (
-        FeatureFlagConfig,
-        InMemoryFeatureFlagStore,
-    )
-
-    store = InMemoryFeatureFlagStore()
-    store.set(FeatureFlagConfig(name="render_engine", enabled=False, percentage=100))
-    resolver = RenderEngineResolver(default_engine="legacy", store=store)
-
-    assert resolver.get_engine(user_id="user-123") == "legacy"
-
-
-def test_resolver_whitelist_overrides_percentage_0():
-    """白名单用户即使 percentage=0 也走 unified。"""
-    from video_processing.render_engine_resolver import RenderEngineResolver
-
-    from packages.adapters.redis.feature_flag_store import (
-        FeatureFlagConfig,
-        InMemoryFeatureFlagStore,
-    )
-
-    store = InMemoryFeatureFlagStore()
-    store.set(
-        FeatureFlagConfig(
-            name="render_engine",
-            enabled=True,
-            percentage=0,
-            whitelist={"user-vip"},
-        )
-    )
-    resolver = RenderEngineResolver(default_engine="legacy", store=store)
-
-    assert resolver.get_engine(user_id="user-vip") == "unified"
-    assert resolver.get_engine(user_id="user-other") == "legacy"
-
-
-def test_resolver_percentage_0_all_legacy():
-    """percentage=0 且无白名单时，全部走 legacy。"""
-    from video_processing.render_engine_resolver import RenderEngineResolver
-
-    from packages.adapters.redis.feature_flag_store import (
-        FeatureFlagConfig,
-        InMemoryFeatureFlagStore,
-    )
-
-    store = InMemoryFeatureFlagStore()
-    store.set(FeatureFlagConfig(name="render_engine", enabled=True, percentage=0))
-    resolver = RenderEngineResolver(default_engine="legacy", store=store)
-
-    for i in range(50):
-        assert resolver.get_engine(user_id=f"user-{i}") == "legacy"
-
-
-def test_resolver_default_unified_when_flag_off():
-    """默认引擎设为 unified 且 flag 关闭时，返回 unified。"""
-    from video_processing.render_engine_resolver import RenderEngineResolver
-
-    from packages.adapters.redis.feature_flag_store import (
-        FeatureFlagConfig,
-        InMemoryFeatureFlagStore,
-    )
-
-    store = InMemoryFeatureFlagStore()
-    store.set(FeatureFlagConfig(name="render_engine", enabled=False, percentage=0))
-    resolver = RenderEngineResolver(default_engine="unified", store=store)
-
-    assert resolver.get_engine(user_id="user-123") == "unified"
-
-
-# ── _render_with_legacy_engine 集成测试 ──────────────────────────────────────
-
-
-def test_legacy_engine_single_clip_keeps_original_fps():
-    """单 clip 场景：输出保持原帧率（不做 fps 归一化），分辨率缩放正确。"""
-    import subprocess
-    import tempfile
-
-    from video_processing.ffmpeg_utils import probe_video_info
-
-    from apps.worker.worker_app.tasks.generation import _render_with_legacy_engine
-
-    with tempfile.TemporaryDirectory() as tmpdir:
-        tmp_path = Path(tmpdir)
-        input_path = tmp_path / "input.mp4"
-        output_path = tmp_path / "output.mp4"
-
-        # 生成 1 秒 30fps 测试视频（带音频）
-        subprocess.run(
-            [
-                "ffmpeg",
-                "-y",
-                "-f",
-                "lavfi",
-                "-i",
-                "color=c=red:s=640x360:d=1:r=30",
-                "-f",
-                "lavfi",
-                "-i",
-                "anullsrc=r=44100:cl=stereo:d=1",
-                "-c:v",
-                "libx264",
-                "-pix_fmt",
-                "yuv420p",
-                "-c:a",
-                "aac",
-                "-shortest",
-                str(input_path),
-            ],
-            check=True,
-            capture_output=True,
-        )
-
-        clip = _TestClip(asset_id="asset-1", duration=1.0)
-        asset_path_map = {"asset-1": input_path}
-
-        duration, file_size = _render_with_legacy_engine(
-            task_id="test-task",
-            virtual_clips=[clip],
-            asset_path_map=asset_path_map,
-            work_dir=tmp_path,
-            output_path=output_path,
-        )
-
-        assert output_path.exists()
-        assert file_size > 0
-        assert duration > 0
-
-        # 旧引擎保持原帧率（30fps），不做 fps 归一化
-        info = probe_video_info(str(output_path))
-        assert abs(info.get("fps", 0) - 30.0) < 0.5
-        assert info.get("width") == 1280
-        assert info.get("height") == 720
-
-
-def test_legacy_engine_two_clips_concat_duration():
-    """多 clip 场景：concat 后时长为两片段之和。"""
-    import subprocess
-    import tempfile
-
-    from video_processing.ffmpeg_utils import probe_duration
-
-    from apps.worker.worker_app.tasks.generation import _render_with_legacy_engine
-
-    with tempfile.TemporaryDirectory() as tmpdir:
-        tmp_path = Path(tmpdir)
-        input1 = tmp_path / "input1.mp4"
-        input2 = tmp_path / "input2.mp4"
-        output_path = tmp_path / "output.mp4"
-
-        for idx, inp in enumerate([input1, input2]):
-            color = "red" if idx == 0 else "blue"
-            subprocess.run(
-                [
-                    "ffmpeg",
-                    "-y",
-                    "-f",
-                    "lavfi",
-                    "-i",
-                    f"color=c={color}:s=640x360:d=1:r=30",
-                    "-f",
-                    "lavfi",
-                    "-i",
-                    "anullsrc=r=44100:cl=stereo:d=1",
-                    "-c:v",
-                    "libx264",
-                    "-pix_fmt",
-                    "yuv420p",
-                    "-c:a",
-                    "aac",
-                    "-shortest",
-                    str(inp),
-                ],
-                check=True,
-                capture_output=True,
-            )
-
-        clip1 = _TestClip(asset_id="asset-1", duration=1.0, clip_type="main", order=0)
-        clip2 = _TestClip(asset_id="asset-2", duration=1.0, clip_type="main", order=1)
-        asset_path_map = {"asset-1": input1, "asset-2": input2}
-
-        duration, file_size = _render_with_legacy_engine(
-            task_id="test-task",
-            virtual_clips=[clip1, clip2],
-            asset_path_map=asset_path_map,
-            work_dir=tmp_path,
-            output_path=output_path,
-        )
-
-        assert output_path.exists()
-        assert file_size > 0
-        assert abs(duration - 2.0) < 0.2
-
-
-def test_legacy_engine_broll_mode_supported():
-    """b_roll 类型的 clip 也被正确识别为主图层并渲染。"""
-    import subprocess
-    import tempfile
-
-    from apps.worker.worker_app.tasks.generation import _render_with_legacy_engine
-
-    with tempfile.TemporaryDirectory() as tmpdir:
-        tmp_path = Path(tmpdir)
-        input_path = tmp_path / "input.mp4"
-        output_path = tmp_path / "output.mp4"
-
-        subprocess.run(
-            [
-                "ffmpeg",
-                "-y",
-                "-f",
-                "lavfi",
-                "-i",
-                "color=c=green:s=640x360:d=1:r=30",
-                "-f",
-                "lavfi",
-                "-i",
-                "anullsrc=r=44100:cl=stereo:d=1",
-                "-c:v",
-                "libx264",
-                "-pix_fmt",
-                "yuv420p",
-                "-c:a",
-                "aac",
-                "-shortest",
-                str(input_path),
-            ],
-            check=True,
-            capture_output=True,
-        )
-
-        clip = _TestClip(
-            asset_id="asset-1",
-            duration=1.0,
-            clip_type="main",
-            config={"role": "b_roll"},
-        )
-        asset_path_map = {"asset-1": input_path}
-
-        duration, file_size = _render_with_legacy_engine(
-            task_id="test-task",
-            virtual_clips=[clip],
-            asset_path_map=asset_path_map,
-            work_dir=tmp_path,
-            output_path=output_path,
-        )
-
-        assert output_path.exists()
-        assert file_size > 0
-        assert duration > 0