feat(host-stats): host pressure dashboard pane (Node + Rust parity) - #700
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…3/LB7/LB9/LB13-LB16)
…ixture, deadline param, cgroup unlimited fallback, serde null-vs-absent, subscribed reducer, clock-offset sign, crate direction, targeted delivery, RED procs, e2e matrix)
…te, pids-limit semantics, disk aggregation, inotify reader, darwin CPU, refresh cooldown, surface tests, WsState sweep, cadence ownership, rust test-validity, RED sequencing, exact staging, a11y age label, doc verification)
…ngle-flight refresh
…iber-gated sampling + registry getMaxTerminals
Widen RegistryPaneKindSchema (+Node/Rust mirrors) with 'host-stats' so tabs.sync registry records carrying host-stats panes round-trip (resolves the known typecheck:client error at tab-registry-snapshot.ts:87), and expose hostStats: true on POST /api/tabs, POST /api/panes/:id/split, and MCP new-tab/split-pane as a cheap content kind (no terminal spawned), mirroring the browser/editor precedents in both servers.
…dge, interest-gated cadence, targeted send, refresh floor
… + per-section watchdog coverage
…ode .finally parity)
…md pane-kind list
…e host-stats delta
…l-suite-only reach)
…est (workspace-load flake)
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What
Adds a Host Stats pane (kind
host-stats, picker shortcut H, gated byhostStatsAvailable— Linux/WSL/macOS only): an at-a-glance host load dashboard with a 9-tile live tier (CPU/load/memory/paging/PSI/disk-IO/network/limits/freshell-itself) streaming at 2s/5s cadences only while at least one client is subscribed (zero server cost otherwise), and a request-only tier (top processes, process health, inotify, disks, thermals/battery) refreshed solely via an explicit "Refresh measurements" button with single-flight + per-connection and cross-connection rate floors. Unavailable or never-measured values render as—(never zeros); stale on-request data desaturates on a shared 30s→5min ramp.Both servers implement it: Node (
server/host-stats/readers + service, ws-handler wiring) and Rust (freshell-platform readers, freshell-ws interest registry + trait bridge + terminal.rs dispatch, freshell-server concrete collector with targeted per-connection delivery — neverbroadcast_tx). Wire contract pinned three ways: zod schemas + regenerated frozen contract artifacts + Rust field-level shape tests. REST (POST /api/tabs,/api/panes/:id/split) and MCP (new-tab/split-pane) accepthostStats: true. On refresh failure the pane keeps previous values and timestamp; refresh completion is announced accessibly (one-shot sr-only status, no per-second live regions).Coverage
/proc+/sysfixture files; cgroup v2 leaf semantics (Freshell's own unlimited-cgroup case exercised); disk aggregation worst-device-wins; darwin CPU viaos.cpus()deltas (Node), Rust darwin cpu unavailable (noted divergence).test/server/ws-hoststats.test.ts(subscriber gating, auth gate, both rate floors, last-subscriber teardown).host-stats-pane.spec.tsin MATRIX_SPECS — green on both legs (Node 5/5 ~30s, Rust 5/5 ~28s).Also in this PR (disclosed)
test(codex): close fork/exec /proc cmdline race in sidecar identity test— pre-existing workspace-load flake root-caused during gate debugging (post-fork/pre-exec cmdline reads parent argv), fixed test-only. The test is feature-gated (real-transport), so it only exists undercargo test --workspace.Verification (final integration gate at HEAD)
focused lanes 82/82 & 9/9 & 516/516 · typecheck 0 · lint 0 errors · coordinated full suite success (the first run's 5 failures were 2 real Gauge-mock gaps — fixed — plus 3 environment-only proxy-warning pollution) ·
cargo test --workspace --locked0 · strict clippy (-D warnings) 0 · contract regen idempotent · e2e both legs at final HEAD ·npm run build0.