feat(points): 积分消耗系统全链路集成

后端:
- 简化积分服务: 删除 freeze/settle/refund, 保留 consume/recharge/expire
- 计费配置化: config/points-config.yaml 驱动 fixed/duration/free 三种模式
- TTS 时长探测: app/utils/audio_utils.py (httpx + mutagen 纯 Python)
- Python 层扣费: script(5)/polish(1)/title(1)/voice_clone(200)/tts(按秒)/video(按秒)
- 字幕 free_services: caption/auto_align 不扣费
- 新增 POST /points/consume 端点(402余额预检)
- 新增 check_balance + /points/cost 返回 sufficient/balance/required
- 新增 expire_batches 定时回收, 接入 scheduler main(每5分钟)
- 删除废弃 tts_handler.py
- Alembic 迁移: 删除 frozen/total_refunded 字段
- 同步 requirements.lock 添加 mutagen

前端:
- Rust/IPC 层扣费: compose(5)/subtitle_burn(2)/cover_design(2)
- 字幕打轴改异步: 走 scheduler subtitle handler
- 对口型传 duration: VideoGeneration 传 actualDuration
- 创建 pointStore: 全局余额 + fetchBalance + 充值弹窗控制
- 402 欠费弹 RechargeModal: VideoGeneration/SubtitleBurning/CoverDesign
- 修复 VoiceDubbing.tsx 类型错误 (alignResult never)
- 同步 PointBalance 类型(删除 frozen/available/totalRefunded)

Refs: 积分消耗集成收尾

python-api/app/api/v1/script.py

@@ -10,8 +10,11 @@ from __future__ import annotations
 import asyncio
 import logging
 
-from fastapi import APIRouter
+from fastapi import APIRouter, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
 
+from app.api.deps import get_current_user
+from app.db.session import get_db
 from app.ai.model_router import get_model_router
 from app.ai.prompts import list_categories, load_prompt, render_template
 from app.schemas.common import ApiResponse, success_response
@@ -25,6 +28,8 @@ from app.schemas.script import (
     TestModelResponse,
 )
 from app.services.script_service import get_script_service
+from app.services import point_service as ps
+from app.models.user import User
 
 router = APIRouter()
 logger = logging.getLogger(__name__)
@@ -45,7 +50,11 @@ async def get_categories():
 
 
 @router.post("/polish", response_model=ApiResponse[str])
-async def polish_content(request: PolishRequest):
+async def polish_content(
+    request: PolishRequest,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
     """
     AI 润色文案/画面描述
 
@@ -65,6 +74,17 @@ async def polish_content(request: PolishRequest):
             shot_type=request.shot_type or "segment",
         )
 
+        # 扣费
+        points = ps._calculate_cost("polish")
+        await ps.consume(
+            db,
+            user_id=current_user.id,
+            points=points,
+            source_type="polish",
+            source_id=f"polish_{current_user.id}_{asyncio.get_event_loop().time()}",
+            description=f"润色 {request.polish_type}",
+        )
+
         return success_response(
             data=polished,
             message=f"{type_name}润色完成",
@@ -118,7 +138,11 @@ async def test_model(request: TestModelRequest):
 
 
 @router.post("/generate-title", response_model=ApiResponse[GenerateTitleResponse])
-async def generate_title(request: GenerateTitleRequest):
+async def generate_title(
+    request: GenerateTitleRequest,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
     """
     根据脚本内容智能生成标题
 
@@ -178,6 +202,17 @@ async def generate_title(request: GenerateTitleRequest):
         if len(title) > request.max_length:
             title = title[:request.max_length]
 
+        # 扣费
+        points = ps._calculate_cost("title")
+        await ps.consume(
+            db,
+            user_id=current_user.id,
+            points=points,
+            source_type="title",
+            source_id=f"title_{current_user.id}_{asyncio.get_event_loop().time()}",
+            description=f"生成{request.title_type}标题",
+        )
+
         return success_response(
             data=GenerateTitleResponse(title=title),
             message="标题生成成功",