The PostgreSQL implementation returns 'PAT not found' when no rows match,
while SQLite/MySQL return 'sql: no rows in result set' from QueryRowContext.

Both behaviors are correct - the key fix is that PostgreSQL no longer
throws JSONB errors on missing/malformed data.

Changes:
- Update test assertions to accept either error type
- Fix comment punctuation for godot linter
- Maintain backward compatibility across all database drivers