The Directory showed a catalogue feed only once someone subscribed, and a feed left the
catalogue with its last subscriber, so nothing could be put there for others to find.
- A feed has a listed flag, set by ipx add --list (with --category for the Directory's chip).
The web page keeps a listed feed in the catalogue when its last subscriber leaves.
- The Directory lists every catalogue feed; Popular still only what people subscribe to.
popular() reads titles, artwork and categories through Db::feed_list, not three queries a
feed. Subscribing from the Directory scans the feed at once.
- A feed nobody subscribes to is checked once a day at most.
- clean_directory, in the sweep before each scan, removes from the catalogue and the database
a feed nobody subscribes to, with no file on disk and not from an OPML, that has failed for
30 days or published nothing in a year. Run against production first: it removes nothing.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>