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Brennan Benson
552b99298b
On repos where `git status --untracked-files=all` takes tens of seconds, the background status poll restarted a fresh scan 3s after the previous one finished, keeping a git process at high CPU almost continuously while the workspace sat idle (#7983). The coalesced poll runner now paces reruns by the previous run's duration, split by trigger class: - Evidence-free timer ticks wait 5x the last refresh duration (capped at 5 minutes), bounding idle polling to ~1/6 duty cycle. - Change signals (file-watch events, repo metadata pushes, finished terminal commands, window reveal after hidden) wait only 1x, so real changes in a slow repo still surface promptly; a change signal can pull an already-scheduled tick run earlier, and the strongest pending trigger wins for trailing reruns. - Backoff-deferred scans are skipped while the window is hidden; the becoming-visible run catches up on the short lane. Fast repos keep the exact 3s cadence (the multiplier never drops the gap below the existing floor), and user-triggered refreshes are unaffected (they bypass the poll runner). The stale-conflict poll gets the same pacing, which also spaces slow remote SSH probe chains. Fixes #7983