The feed settings dialog says 0 means every episode, the whole back catalogue, and as the server's default it does. But merge_policy's cap() made only the server-wide 0 unlimited: a 0 set on a feed, or on one person's subscription, became a budget of 0, hold_back held every file, and nothing downloaded. Now 0 is unlimited at every level, as the dialog has always said. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>