feat(#1893): 注册 scripts_ai_router 到主路由 + requirements.txt 添加 yt-dlp

- router.py: import scripts_ai_router 并 include_router(prefix='/scripts')
- requirements.txt: 添加 yt-dlp>=2024.1.0(api-base/worker-base 均消费此文件)

apps/api/app/api/router.py

@@ -21,6 +21,7 @@ from app.api.routes.lipsync import router as lipsync_router
 from app.api.routes.points import points_router, usage_router
 from app.api.routes.projects import router as projects_router
 from app.api.routes.scripts import router as scripts_router
+from app.api.routes.scripts_ai import router as scripts_ai_router
 from app.api.routes.share import router as share_router
 from app.api.routes.subscription import router as subscription_router
 from app.api.routes.tags import router as tags_router
@@ -190,6 +191,11 @@ api_router.include_router(
     prefix="/scripts",
     tags=["ScriptLibrary"],
 )
+api_router.include_router(
+    scripts_ai_router,
+    prefix="/scripts",
+    tags=["ScriptLibrary AI"],
+)
 api_router.include_router(
     ai_avatar_render_router,
     prefix="/ai-avatar/render",

requirements.txt

@@ -17,3 +17,6 @@ python-dotenv==1.0.1
 # AI 数字人封面智能选帧（cover_frame_scorer 用 cv2/numpy 做清晰度/亮度/色彩评分）
 numpy==1.26.4
 opencv-python-headless==4.10.0.84
+
+# yt-dlp: 抖音视频下载（#1893 文案提取）
+yt-dlp>=2024.1.0