rss feed cleaner
  GET /clean?url=<feed>&token=<token>[&clean=&summarize=&filter=&fulltext=&summary=&refresh=]
  GET /feeds/<slug>?token=<token>[&clean=&summarize=&filter=&fulltext=&summary=&refresh=]
  GET /t/<token>/feeds/<slug>                                  (Reeder-safe token-in-path URL)
  GET /feeds/<slug>/status?token=<token>
  GET /feeds/<slug>/preview?token=<token>
  POST /admin/feeds/<slug>/(refresh|purge|reprocess)?token=<token>
  GET  /admin/ai-budget/status?token=<token>
  POST /admin/maintenance/run?token=<token>
  GET /feeds?token=<token>
  GET /feeds/digest?token=<token>                              (daily roundup of digest:true feeds)
  GET /feeds/saved/digest?token=<token>                        (daily digest of Wallabag saved articles)
  GET /feeds/saved/weekly-cleanup?token=<token>                (weekly Wallabag cleanup buckets)
  GET /feeds/saved/inbox-zero?token=<token>                    (current Wallabag inbox-zero buckets)
  POST /t/<token>/admin/saved-links                            (save one URL for AI clean/summarize)
  DELETE /t/<token>/admin/saved-links/by-url?url=<article>      (remove one URL from the saved-links feed)
  GET /t/<token>/admin/saved-links/exists?url=<article>         (check if a URL is already saved)
  GET /t/<token>/admin/saved-links/<id>                        (poll saved-link processing status)
  DELETE /t/<token>/admin/saved-links/<id>                     (remove one saved-link item from the feed)
  GET /t/<token>/reader/saved-links/<id>                       (processed reader page for Reeder)
  GET /audio/<id>.mp3?token=<token>                            (on-demand narration; referenced by feed enclosures when a feed sets audio:true)
  GET /podcast/<id>.mp3?token=<token>                          (pre-extracted YouTube episode audio; referenced by feed enclosures when a feed sets podcast:true)