Image handling improvements:
- Convert PNG and images >500KB to WebP format
- Resize images wider than 1600px maintaining aspect ratio
- Check for .webp version before falling back to original
- WebP quality set to 80 (equivalent to JPEG 90%)
Garbage collection for disk space management:
- New MLS_Garbage_Collector class runs after each sync
- Only active when MLS_GC_DISK_THRESHOLD defined in wp-config
- Deletes image directories older than 24 hours, oldest first
- Stops when free space reaches 5GB or 2GB deleted per run
- Protects recently accessed images from deletion
Documentation:
- Added Garbage Collection section to README
- Updated Features list and File Structure
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>