- Add TESTING_GUIDE.md with step-by-step testing instructions
- Add test-complete-setup.js for automated setup verification
- Cover all aspects: infrastructure, XML import, file upload, matching, playback, export
- Include troubleshooting section and expected results
- Provide verification checklist and success criteria
The testing guide covers 7 phases of testing from basic setup
to advanced features, ensuring complete validation of the
S3 music storage and matching system.
