DESIGN.md §15 reads satisfaction off the files, so a `satisfied` attempt
row whose sidecar was just deleted by hand is a stale claim that hides
the gap from the reconcile loop's work list. `unsatisfy` withdraws only
that claim: the attempt count and timestamp stay, because the backoff is
a fact about what providers were already asked and a delete does not
un-ask them.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>