A contact on two servers at once was marked seen by each in turn: a sighting
announced a contact change, every connection re-applied its contacts, and
each re-application recorded the contact on its own server — another change,
round and round, rewriting contacts.txt every time. Re-applying now only marks
a contact that was never seen; the last sighting moves when the client appears.
Sightings no longer write the file on their own either: they reach it in one
save half a minute later, or with the next edit's save, and are flushed when
the client closes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ericek111
9f2e5087ce