Frank veto: DirectoryNotEmpty re-fires on every file event (GUI writes,
wallpaper shuffle) un-debounced -> hundreds of heartbeat spawns/day.
The sweep is cheap (57 ms CPU) but the trigger design was event spam.
Exposure-window fix is an open design question; timer unchanged.
Timer-only heartbeat left GUI dotfiles edits uncommitted for up to 59
minutes; a trunk-sync session clearing the dirty tree on 2026-10-18
destroyed a month of uncommitted noctalia bar layout inside that gap.
live-sync.path (DirectoryNotEmpty on dotfiles/) fires the existing
flock-guarded oneshot within seconds of any repo-side dotfiles write,
shrinking the exposure window from ~1h to ~2s. Timer stays as the
hourly catch-all for the machine tiers.
Documents the 16:46 layout loss (uncommitted GUI state stashed, stash
entry destroyed during trunk sync) and the git-fsck recovery landed in
c87b378. Lesson codified in managed skills.
Frank