Addresses the follow-up review on the foundation fixes:
- Re-read the task via store.getTask immediately before merging the per-repo
entry, so a concurrent sibling-repo acquisition that landed since the initial
read isn't clobbered by updateTask's wholesale map replace (narrows the
read-modify-write window to the store lock; a fully atomic per-repo store-level
merge remains a follow-up).
- Normalize the inline FNXC comment to the FNXC:Area yyyy-MM-dd-hh:mm: convention.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>