Add logout and fixed user specific requirements retrieval

backend/src/controller.py

@@ -126,13 +126,25 @@ class AuthController:
     @staticmethod
     def logout() -> JSONResponse:
         """
-        Logout the user by clearing the authentication cookie.
+        Logout the user by clearing the authentication cookie and returning
+        the Keycloak logout URL for full session termination.
 
         Returns:
-            JSONResponse: Success message with cookie cleared.
+            JSONResponse: Contains the Keycloak logout URL and clears the cookie.
         """
+        # Build Keycloak logout URL
+        keycloak_logout_url = (
+            f"{settings.keycloak_external_url}realms/{settings.keycloak_realm}"
+            f"/protocol/openid-connect/logout"
+            f"?client_id={settings.keycloak_client_id}"
+            f"&post_logout_redirect_uri={settings.frontend_url}"
+        )
+        
         response = JSONResponse(
-            content={"message": "Successfully logged out"},
+            content={
+                "message": "Successfully logged out",
+                "logout_url": keycloak_logout_url
+            },
             status_code=status.HTTP_200_OK
         )