* ⬆️ Update opencode and copilot deps
* 🐛 Decouple workspace-content from workspace-local to reduce scroll re-renders
Move workspace-local subscription from workspace-content* (parent) into
viewport* and viewport-classic* (children). workspace-content* now only
subscribes to the new workspace-vport derived atom, which changes only on
window resize — not on every scroll event. This prevents the sidebar,
palette and other workspace-content children from re-rendering on scroll.
* 🐛 Throttle wheel events to one state update per animation frame
Accumulate wheel event deltas in a mutable ref and flush them via
requestAnimationFrame, so that multiple wheel events between frames
produce a single state mutation instead of one per event. This prevents
the cascade of synchronous React re-renders (via useSyncExternalStore)
that can exceed the maximum update depth on rapid scrolling.
Both panning (scroll) and zoom (ctrl/mod+wheel) are throttled. Scroll
deltas are summed additively; zoom scales are compounded multiplicatively
with the latest cursor point used as the zoom center.
* ♻️ Extract schedule-zoom! and schedule-scroll! from on-mouse-wheel
* ♻️ Avoid zoom dep on on-mouse-wheel by using a ref
