Added 3 MPO format tests per v1.5.0 Phase 5 requirements:
- test_mpo_detection_and_conversion: Verify MPO->JPEG conversion
- test_mpo_dimensions_preserved: Verify dimensions maintained
- test_mpo_full_upload_flow: Test complete upload workflow
MPO (Multi-Picture Object) format handling was implemented in v1.4.2
but was previously untested. These tests ensure the format detection
and JPEG conversion work correctly for iPhone portrait/depth photos.
Test count: 924 -> 927 tests (all passing)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Phil Skentelbery
975046abc7