This commit fixes multiple issues in the comic metadata test suite that were causing test failures:
1. UUID Byte-Order Corruption
- Fixed byte-order corruption when converting library IDs
- Previously used [16]byte(uuid.MustParse(libraryID)) which corrupted bytes
- Now parse UUID once and reuse the parsed UUID variable
- Matches pattern used successfully in calibre_integration_test.go
2. Test Isolation
- Each sub-test now creates its own isolated library
- Previously all sub-tests shared one library, causing cross-test pollution
- ListMediaItemsByLibrary returns items from previous tests
- New libraries: "RTL Manga Test Library", "Western Comic Test Library", "Minimal Metadata Test Library"
3. Query Function Selection
- Replaced SearchMediaItems with ListMediaItemsByLibrary
- SearchMediaItems requires search_pattern parameter which was missing
- ListMediaItemsByLibrary is simpler and more appropriate for these tests
4. Explicit Default Values
- MangaType and ReadingDirection now explicitly set to expected defaults
- Database defaults not applied when pgtype fields have Valid: false
- "Comic with minimal metadata" test now sets: MangaType="unknown", ReadingDirection="auto"
5. Library Naming for Cleanup
- All library names now include "Test" for proper cleanup
- Test cleanup deletes libraries with "test" in name (case-insensitive)
- Prevents orphaned libraries from accumulating in database
All tests in TestComicMetadataExtraction now pass:
- CBZ with RTL manga ✓
- CBZ with Western comic ✓
- Comic with minimal metadata ✓