- AssignRoles: wrap DeleteByUserID + BatchCreate in DB transaction (P1)
- GetUserRoles: use GetByIDs batch query instead of per-role GetByID loop (N+1 fix)
- ListAdmins: use GetByIDs batch query instead of per-user GetByID loop (N+1 fix)
- Add WithTx/DB methods to UserRoleRepository for transaction support
- Add GetByIDs to UserRepository (batch user lookup)
- Add .gitattributes to normalize line endings to LF (P2)
- G115 (integer overflow): Added nosec comments for safe type conversions
where values are bounded by design (e.g., rng.Intn(255) returns 0-254)
- G118 (context.Background): Added nosec for intentional async goroutines
that use WithTimeout for bounded execution after request completes
Note: G101 (hardcoded credentials) warnings are low-confidence false
positives - OAuth fields use getEnv() to read from environment.
