Cloudflare R2 media offload manager for peptiderepo.com.
Built on WP Offload Media Lite. Supersedes the one-off migration script
and mu-plugin peptiderepo-r2-endpoint.php.
Features:
- Admin page under Peptide Repo > R2 Media Manager (shared umbrella menu)
- ensure_umbrella_menu() guard — safe for multi-plugin umbrella sharing
- Batch AJAX migration to R2 with pause/resume and progress bar
- Remove-local-copies batch with physical disk presence check
- Activity log table (wp_pr_r2_log) with self-healing on plugins_loaded
- Test R2 connection button
- R2 endpoint injection via as3cf_aws_s3_client_args filter
