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Neil
e1599c94b8
* perf(terminals): let idle panes share one process-table capture instead of forking their own Every visible local pane runs an agent-completion cadence that resolves through `getStrictProcessTableSnapshot`, and the inspection queue already collapses every shared-observation task enqueued in the same tick onto a single whole-host `ps`. Independent ±10% jitter per pane defeated that: the jitter was re-rolled on each reschedule, so panes drifted permanently apart, each landing in its own tick and each missing the snapshot's 500 ms TTL. Four idle panes cost four captures where one would have served all of them. Idle panes now aim at a deadline grid anchored at the epoch. The pull-forward is clamped to the snapshot TTL, so no interval is ever longer than its tier and none is more than 500 ms shorter: a pane off the grid walks onto it over at most `tier / TTL` steps, costs at most one extra inspection in total, and no inspection is ever delayed. Scoped deliberately. A pane with a foreground agent, or one still inside the 10 s post-activity hot window, keeps its exact interval and its own phase, so the bounded hot cadence is unchanged. The error-backoff path keeps its jitter, where spreading retries across panes is the point. Measured by `pnpm bench:agent-inspection-cadence` — whole-host `ps` captures over 60 s at the 2 s idle tier, median of 21 rounds: | visible panes | before | after | reduction | | --- | --- | --- | --- | | 1 | 29 | 29 | 0% | | 2 | 42 | 30 | 29% | | 4 | 62 | 31 | 50% | | 8 | 82 | 32 | 61% | `process-table-snapshot-reader.ts` measures the `command=` column at 1.15 s of work for 1,948 processes, so these are captures a quiet app was paying for continuously. All 4,202 existing terminal-pane tests pass unchanged, including the no-evidence cadence suite that pins the relaxed and hot intervals. * test(terminals): report n/a instead of dividing by a zero baseline in the cadence benchmark A window shorter than one cadence tier leaves the baseline capture count at zero, and the reduction line then divided by it and printed a meaningless percentage. Reported by CodeRabbit on #18742.