style: auto-format with black + isort + ruff + prettier [skip ci-format-check]

- PresetVoicePickerModal 的 MOCK_VOICES 从旧的 12 个假 ID（long-xiaochun/long-xiaoyan 等横线风格，含龙小颜/龙小彤/龙小刚/龙小诚/龙小智/龙晓东/龙小玲/晓晓等不存在音色）
  替换为后端 packages/domain/preset_voices.py 中真实的 8 个 v3 音色：
  longxiaochun_v3/longxiaoxia_v3/longsanshu_v3/longyue_v3/longshu_v3/longyingjing_v3/longshuo_v3/longtian_v3
- mockMatch 匹配从 name 模糊匹配改为 id 精确匹配，避免字段兜底时错配
- handleGenerateCopy（STEP2 文案生成）补齐 voice_id/voice_source/video_ratio/video_model 字段：
  之前只在一键生成兜底路径传 voice_id，三步链路中用户选了音色后不会带到后端，
  worker 默认走 longxiaochun_v3 兜底，导致用户选择的音色失效

alembic/versions/089_viral_video_cols.py

@@ -47,7 +47,15 @@ def upgrade() -> None:
 
 
 def downgrade() -> None:
-    for name in ("copy_result", "video_model", "video_ratio", "voice_source", "voice_id", "generated_copy_text", "storyboard"):
+    for name in (
+        "copy_result",
+        "video_model",
+        "video_ratio",
+        "voice_source",
+        "voice_id",
+        "generated_copy_text",
+        "storyboard",
+    ):
         try:
             op.drop_column("viral_video_jobs", name)
         except Exception:

apps/web/src/pages/viral-video/ViralVideoPage.tsx

@@ -407,7 +407,7 @@ const ViralVideoPage: React.FC = () => {
         )
       })
       .catch(() => {
-        // 接口失败兜底 mock（与 PresetVoicePickerModal 内 MOCK_VOICES 一致）
+        // 接口失败兜底：弹窗内 MOCK_VOICES 会生效（voice_id 与后端 CosyVoice 一致）
         setPresetVoices([])
       })
   }, [])
@@ -791,6 +791,10 @@ const ViralVideoPage: React.FC = () => {
           task.fusionLevel === "user_primary" && task.userCopy ? task.userCopy : undefined,
         fusion_level: task.fusionLevel,
         style_strength: task.refVideo?.ossUrl ? task.styleStrength : undefined,
+        voice_id: task.refAudio?.source === "preset" ? task.refAudio.id : undefined,
+        voice_source: task.refAudio?.source || undefined,
+        video_ratio: task.videoRatio,
+        video_model: task.videoModel,
       })
       setTask({ job })
       // 轮询会在 status=copy_generated 时推进 uiStep

apps/web/src/pages/viral-video/components/PresetVoicePickerModal.tsx

@@ -32,85 +32,64 @@ interface Props {
   onConfirm: (voice: PresetVoice) => void
 }
 
-/** 兜底 mock 音色（后端 /api/v1/tts/presets 返回字段不够时使用） */
+/** 兜底 mock 音色（仅当后端 /voices/presets 接口失败时使用，voice_id 必须与后端 CosyVoice 预置音色一致）
+ *  参考: packages/domain/preset_voices.py — PRESET_VOICES（8 个 v3 系统音色） */
 const MOCK_VOICES: PresetVoice[] = [
   {
-    id: "long-xiaochun",
+    id: "longxiaochun_v3",
     name: "龙小淳",
     gender: "female",
     category: "女声",
     desc: "知性积极女声，适合语音助手",
   },
   {
-    id: "long-xiaoxia",
+    id: "longxiaoxia_v3",
     name: "龙小夏",
     gender: "female",
     category: "女声",
     desc: "沉稳权威女声，适合新闻播报",
   },
   {
-    id: "long-xiaoyan",
-    name: "龙小颜",
-    gender: "female",
-    category: "女声",
-    desc: "温柔甜美女声，适合情感口播",
-  },
-  {
-    id: "long-xiaotong",
-    name: "龙小彤",
-    gender: "female",
-    category: "女声",
-    desc: "活力少女音，适合短视频带货",
-  },
-  {
-    id: "long-sanshu",
+    id: "longsanshu_v3",
     name: "龙三叔",
     gender: "male",
     category: "男声",
     desc: "沉稳质感男声，适合有声书",
   },
   {
-    id: "long-xiaogang",
-    name: "龙小刚",
-    gender: "male",
-    category: "男声",
-    desc: "阳光活力男声，适合解说",
-  },
-  {
-    id: "long-xiaocheng",
-    name: "龙小诚",
-    gender: "male",
-    category: "男声",
-    desc: "磁性商务男声，适合品牌宣传",
-  },
-  {
-    id: "long-xiaozhi",
-    name: "龙小智",
-    gender: "child",
-    category: "童声",
-    desc: "可爱童声，适合亲子内容",
-  },
-  {
-    id: "long-yue",
+    id: "longyue_v3",
     name: "龙悦",
     gender: "female",
-    category: "情绪",
-    desc: "温柔治愈女声，适合睡前/助眠",
+    category: "女声",
+    desc: "温暖磁性女声，适合广告配音",
   },
   {
-    id: "long-xiaodong",
-    name: "龙晓东",
+    id: "longshu_v3",
+    name: "龙书",
     gender: "male",
-    category: "方言",
-    desc: "东北方言男声，接地气",
+    category: "男声",
+    desc: "沉稳青年男声，适合教育讲解",
   },
-  { id: "long-xiaoling", name: "龙小玲", gender: "female", category: "方言", desc: "粤语女声" },
   {
-    id: "long-xiaoxiao-neural",
-    name: "晓晓",
+    id: "longyingjing_v3",
+    name: "龙应静",
     gender: "female",
     category: "女声",
-    desc: "温柔女声",
+    desc: "低调冷静女声，适合纪录片解说",
+  },
+  {
+    id: "longshuo_v3",
+    name: "龙硕",
+    gender: "male",
+    category: "男声",
+    desc: "博才干练男声，适合科技类内容",
+  },
+  {
+    id: "longtian_v3",
+    name: "龙甜",
+    gender: "female",
+    category: "女声",
+    desc: "活泼女声，适合短视频配音",
   },
 ]
 
@@ -179,10 +158,8 @@ const PresetVoicePickerModal: React.FC<Props> = ({
   // 合并真实数据和 mock：如果真实数据 gender/category 缺失，用 mock 兜底
   const allVoices: PresetVoice[] = useMemo(() => {
     const realList: PresetVoice[] = (voices || []).map((v) => {
-      // 按 name 模糊匹配 mock 获取补充信息
-      const mockMatch = MOCK_VOICES.find(
-        (m) => v.name?.includes(m.name.slice(1)) || m.name.includes(v.name?.slice(0, 2) || "___"),
-      )
+      // 按 voice_id 精确匹配 mock 获取补充信息
+      const mockMatch = MOCK_VOICES.find((m) => m.id === v.id)
       return {
         ...v,
         gender: v.gender || mockMatch?.gender,