feat: final integration — all routers, CORS, seed data, deploy ready

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/main.py

@@ -1,6 +1,7 @@
 from contextlib import asynccontextmanager
 
 from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
 from sqlalchemy import select
 
 from app.api.auth import router as auth_router
@@ -37,6 +38,15 @@ async def lifespan(app: FastAPI):
 
 
 app = FastAPI(title="Meeting Protocol Service", lifespan=lifespan)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
 app.include_router(auth_router)
 app.include_router(recordings_router)
 app.include_router(protocols_router)