The mirror kept its creation-time base forever. eternitas #167 was stacked
on fix/one-hallway, retargeted to main after #166 merged; ci.yml
(pull_request: branches [main]) then silently never ran for it, while
unfiltered workflows did. An edited event triggers nothing, so close the
stale mirror and open a fresh one on the new base (runs CI at once).
An unknown base is left alone, never guessed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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