CSS pulse animations restored — they run at ~0% CPU on WebKitGTK's
native compositor. The --disable-gpu flags in electrobun.config.ts
only apply in CEF mode (AGOR_CEF=1) for E2E testing.
User mode (WebKitGTK): full GPU, full animations, full transitions
Test mode (CEF): GPU disabled, animations still CSS but no human watching
- electrobun.config.ts: add --disable-gpu --disable-gpu-compositing to CEF
flags (GLXBadWindow X11 errors cause continuous recovery loop)
- StatusBar.svelte: replace @keyframes pulse with CSS transition + JS toggle
- app.css: remove @keyframes pulse-dot (continuous compositor repaint)
CSS animations on small elements cause 10-30% CPU in both CEF and WebKitGTK.
JS class toggle with transition: opacity 0.3s uses near-zero CPU.
