add download service

backend/app/main.py

@@ -20,6 +20,8 @@ from .video_generator import VideoGenerator, check_ffmpeg
 from .database import init_db, async_session_maker
 from .db_models import Opening
 from .routers import openings, backgrounds
+from .openings_downloader.router import router as downloader_router
+from .openings_downloader import db_models as downloader_db_models  # noqa: F401 - import for table creation
 from sqlalchemy import select, update
 from datetime import datetime, timezone
 
@@ -55,6 +57,7 @@ app.add_middleware(
 # Include routers
 app.include_router(openings.router, prefix="/api")
 app.include_router(backgrounds.router, prefix="/api")
+app.include_router(downloader_router, prefix="/api")
 
 # Mount output directory for serving videos
 app.mount("/videos", StaticFiles(directory=str(settings.output_path)), name="videos")