- Fix RGBA→JPEG error: convert all images to RGB before saving
- Upload tracker: per-person breakdown in JSON, reset_person(), get_person_summary()
- mark_rejected() only fires on face-detection failures (not all HTTP 400s)
- New env vars: DRY_RUN, RETRY_REJECTED, RESET_PERSON
- Tracker summary printed at startup showing uploaded/rejected counts per person
- Document new env vars in compose.yml
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>