feat(sso): replace local auth with Keycloak OIDC callback flow

backend/app/main.py

@@ -1,9 +1,12 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from starlette.middleware.sessions import SessionMiddleware
 from app.api import auth, configs, zones, interfaces, policies, rules, masq
+from app.database import settings
 
 app = FastAPI(title="Shorefront", version="0.1.0")
 
+app.add_middleware(SessionMiddleware, secret_key=settings.jwt_secret_key)
 app.add_middleware(
     CORSMiddleware,
     allow_origins=["http://localhost:5173", "http://localhost:80"],