davewiner's OPML left config.toml before retire_group existed, so its
derived rows were skipped by every scan but never cleared. At startup the
daemon now retires every group whose parent is gone from config. And
retire_group unmanages a feed that has its own config entry instead of
dropping it: eleven of davewiner's were promoted without being unmanaged,
and dropping them as derived would have deleted their entries. That also
covers removing an OPML or Patreon subscription from the page.
Closes#3.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
rays
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