fix: include is_admin and household_name in get_user_by_callback_token query

The auto-login route needs these fields to populate the session, but the
query only selected id, username, household_id. Added JOIN with
households table and selected is_admin + household_name.

models.py

@@ -233,7 +233,9 @@ def get_user_by_callback_token(token: str) -> dict | None:
     """Look up a user by their ntfy callback token."""
     with get_db() as db:
         row = db.execute(
-            "SELECT id, username, household_id FROM users WHERE callback_token = ?",
+            "SELECT u.id, u.username, u.is_admin, u.household_id, h.name AS household_name "
+            "FROM users u JOIN households h ON u.household_id = h.id "
+            "WHERE u.callback_token = ?",
             (token,),
         ).fetchone()
         return dict(row) if row else None