feat: 重构 IdentifyFace.vue 为 Hooks 架构

- 新增 hooks/ 目录，包含三个专用 Hook：
  * useVoiceGeneration - 语音生成和校验逻辑
  * useDigitalHumanGeneration - 数字人视频生成逻辑
  * useIdentifyFaceController - 协调两个子 Hook 的控制器

- 新增 types/identify-face.ts 完整类型定义

- 重构 IdentifyFace.vue 使用 hooks 架构：
  * 视图层与业务逻辑分离
  * 状态管理清晰化
  * 模块解耦，逻辑清晰

- 遵循单一职责原则，每个 Hook 只负责一个领域
- 提升代码可测试性和可维护性
- 支持两种视频素材来源：素材库选择和直接上传
- 实现语音生成优先校验的业务规则

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/app/web-gold/src/router/index.js

@@ -43,10 +43,8 @@ const routes = [
         name: '数字人',
         children: [
           { path: '', redirect: '/digital-human/voice-copy' },
-          { path: 'kling', name: '可灵数字人', component: () => import('../views/kling/IdentifyFace.vue') },
+          { path: 'kling', name: '数字人生成', component: () => import('../views/kling/IdentifyFace.vue') },
           { path: 'voice-copy', name: '人声克隆', component: () => import('../views/dh/VoiceCopy.vue') },
-          { path: 'avatar', name: '生成数字人', component: () => import('../views/dh/Avatar.vue') },
-          { path: 'video', name: '数字人视频', component: () => import('../views/dh/Video.vue') },
         ]
       },
       {