* perf(dashboard): fill the hero rotation dot on the compositor
The active hero dot animated `width` 0 → 18px for every 8 s rotation, so
an idle dashboard with two or more slides ran style, layout and paint on
every frame. The fill is now a full-width bar that slides in with
`transform` under the pill's rounded clip. The `animationend` advance,
the pause and reduced-motion behaviour are unchanged.
Measured on the E2E build (visible, four slides, 120 s): layouts
10,405-10,677 -> 366-369, renderer process CPU 14.2-16.4 s -> 3.7-4.1 s,
GPU process CPU 14.8-18.8 s -> 14.0-14.8 s.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* test(e2e): drive the real hero rotation animation
The unit specs dispatch `animationend` on the dot span by hand, so a fill
whose real event no longer reached the handler would still pass. The new
Electron spec shortens `--hero-rotation-ms` and checks that the running
`::before` fill advances the slide, that pause holds it and that Play
resumes it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: 4gray <fourgray@proton.me>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
