Adds a Radix UI slider below the zoom preset buttons allowing any scale
between 1.0x and 5.0x. When the slider value matches a preset exactly,
that preset button also shows as active.
- Add `customScale?: number` to `ZoomRegion` and `getZoomScale()` helper
that returns customScale when set, falling back to ZOOM_DEPTH_SCALES[depth]
- Overlay indicator, playback renderer, and frame exporter all use
getZoomScale() so preview, playback, and export are consistent
- Fix focus clamping in zoomRegionUtils and frameRenderer to use actual
scale instead of depth-based preset scale, preventing zoom drift with
custom values
- Fix drag boundary in VideoPlayback to use clampFocusToScale with the
actual scale so the full canvas is clickable at high custom zoom levels
- Timeline item label shows custom scale value when set
- Slider styled dark with green thumb/fill when a custom (non-preset) value is active
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
makaradam
37215531c2