- MetricsTicked broadcast event (channel 'metrics', as 'tick') + a
clusev:mock-metrics command (dev placeholder for the SSH MetricsPoller),
broadcasting a rolling CPU value every 2s.
- Echo + pusher-js client in app.js with an env-driven Reverb connection
(VITE_REVERB_*). metricsChart Alpine island seeds from server data, appends
each tick and redraws the sparkline; the indicator reflects the real WS state.
- Published config/reverb.php + config/broadcasting.php.
- Backend verified: the queue processes MetricsTicked every 2s with no errors.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>