Add a background lane to the git process scheduler and run reconciliation
checkout reads, observation-driven workspace refreshes and background fetches
in it. Bound reconciliation checkout reads to four at a time. Stop the Linux
file observer's startup scan from reporting existing files as creates, which
made every cold diff compute and discard its first revision.
* fix(server): keep Git pressure from stalling daemon
Git process starts were refilled synchronously, so slow process spawning could monopolize the main loop long enough to trip connection liveness checks. Admit one process per event-loop turn and expose refresh/fetch provenance in runtime queue metrics.
* perf(server): avoid delaying isolated Git commands
Start the first command immediately when the scheduler is idle. Backlog admission and completion-driven refills still yield between spawns, preserving daemon liveness without adding a turn to normal sequential Git traffic.
* fix(server): keep Git admission outside fake clocks
Subprocess admission is event-loop ordering rather than simulated wall-clock behavior. Use the native Node immediate so service tests can fake debounce timers without deadlocking queued real Git processes.
* refactor(server): bind Git command provenance explicitly
* test(server): expect bound Git fetch runner
* perf(server): bound Git process starts
Git refresh bursts could keep creating short-lived processes at the concurrency ceiling, causing sustained process churn on constrained hosts. Apply one daemon-global start-rate and concurrency policy to every Git command while preserving the legacy concurrency environment variable.
* build(nix): update npm dependency hash
* fix(server): hold Git slots until process exit
* fix(server): enforce Git limits across process lifetime
* fix(server): align Git metrics with process exit
* Fix Git limiter test deadlocks
* Tune default Git process rate
Mohamed Boudra