* fix(reader): gate route View Transitions on the API, turns on groups (READEST-9)
Reverts #4949, which opened books through the plain router to dodge the
"Transition was aborted because of timeout in DOM update" TimeoutError
(Sentry READEST-9). Rather than carve the transition out of one flow, gate it
at the router: useAppRouter routes through the View Transition router only
where the engine has the View Transitions API, and every into-reader path
(including the reverted ones) goes back through useAppRouter.
The base View Transitions API and nested view-transition groups reach very
different browsers, so they become two separate appService capability flags,
each backed by a probe in utils/viewTransition:
* supportsViewTransitionsAPI (document.startViewTransition): the baseline a
route crossfade needs, landing on Chrome 111+, Safari 18+, recent WebView.
Gates the router.
* supportsViewTransitionGroup (view-transition-group: nearest, Chrome/WebView
140+): the far narrower target the paginator's layered turns require. Gates
the turn-style options and the captured-turn fallback.
Both flags fold in the Linux WebKitGTK carve-out because it crashes on the
snapshot, matching the supportsCanvasContext2DFilter precedent.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(tts): enlarge the Now Playing bar and scale its controls responsively
Grow the collapsed bar to h-14 with a 10x10 cover and symmetric px-2 padding,
drive the play/pause and close icons through useResponsiveSize instead of fixed
pixel sizes, and cut the bottom safe-area contribution to a third so the bar
sits closer to the screen edge.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>