Phase 1 fix auth redirect API handling and route issues

app/core/security/session_auth.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 from datetime import datetime, timedelta, timezone
-from fastapi import Request, Depends
+from fastapi import Request, Depends, HTTPException
 from sqlalchemy.orm import Session
 from sqlalchemy import select
 
@@ -48,5 +48,5 @@ def get_current_user(request: Request, db: Session = Depends(get_common_db)) ->
 
 def require_login(user: User | None = Depends(get_current_user)) -> User:
     if not user:
-        raise PermissionError("Not authenticated")
+        raise HTTPException(status_code=401, detail="Not authenticated")
     return user