Fix purge_seed_data type mismatch for access_permissions.user_id (#107)

AccessPermission.user_id is VARCHAR (stores username), not UUID.
Changed to compare with user.username instead of user.id.

CHANGELOG.md

@@ -6,6 +6,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Fixed purge_seed_data crash when deleting access permissions - was comparing UUID to VARCHAR column (#107)
+
 ### Changed
 - Upstream source connectivity test no longer follows redirects, fixing "Exceeded maximum allowed redirects" error with Artifactory proxies (#107)
 - Upstream sources table now has dedicated "Test" column with OK/Error status badges (#107)

backend/app/purge_seed_data.py

@@ -194,7 +194,8 @@ def purge_seed_data(db: Session) -> dict:
             synchronize_session=False
         )
         # Delete any access permissions for this user
-        db.query(AccessPermission).filter(AccessPermission.user_id == user.id).delete(
+        # Note: AccessPermission.user_id is VARCHAR (username), not UUID
+        db.query(AccessPermission).filter(AccessPermission.user_id == user.username).delete(
             synchronize_session=False
         )
         db.delete(user)