Buttons used to ignore `isMask` on every render path — the mask
shape drew as normal content instead of clipping the button's
other layers. Every entry point now routes button children through
`drawMaskedGroup`:
- `drawLayers` nested-button branch
- new `drawButtonFrame` (used by the mask-preview overlay in
button-edit mode so the preview reflects the button's own
stage instead of the main scene)
- `renderButtonThumbnail` so sidebar previews match the stage
- exported-runtime button branch mirrors the split; bumped
`RUNTIME_VERSION` to '11' so cached players reload
Also:
- Timeline clip-track dropzone hides until the library has at
least one clip, and the hint stays centred in the visible
ruler area instead of drifting with horizontal scroll.
- Regression tests pin positive/negative button masks in
`drawButtonFrame` and verify `drawSceneFrame` applies
button-internal masks when the button sits on the main stage.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Button assets
- Re-introduce button-asset type with 4 content states (normal/hover/
pressed/disabled) stored as keyframes at BUTTON_STATE_TIMES, plus a
separate hit-area editor mode.
- useButtonRuntime composable for per-instance state/disabled flags on
the main stage.
- Sidebar library lists button assets with live 80×80 thumbnails;
renderButtonThumbnail now accepts an images map so image-kind layers
inside a button render instead of producing a fully-transparent PNG.
- Compact (no-thumbnail) mode aligns button rows to the library-row
height.
Scope footer
- Button-edit mode now uses the same sidebar scope-footer pattern as
clip-edit (back button to "Main timeline" + active scope chip);
removed the inline exit button from the timeline scrub-bar.
Timeline
- Track-name column default bumped to 260px to match the assets sidebar
above it (storage key bumped to :v2 so stale values reset).
- scrub-bar z-index raised above sticky track-name columns so rows
scroll under it instead of over.
- scrub-handle flips z-index based on horizontal scroll: above
name-spacer when the playhead is in view (no half-clip at t=0),
below when the playhead has scrolled off the left edge (so the
toggle row cleanly covers it).
- name-spacer extends ±3/1px to fully cover the obscured handle.
- scrub-handle head pokes 3px above the ruler with rounded top corners
via clip-path path().
Track context menu
- Added missing i18n keys (renameScriptTrack / deleteScriptTrack /
renameScriptTrackDialog.{title,confirm}).
- Rename items show a visible pencil icon; empty .check slot removed
so items line up flush-left; toggle items place their active ✓ on
the right (kf-menu-trailing-check).
Dev HUD
- Test progress bar flips to --danger as soon as the first failure is
recorded, instead of only at the end of the run.
Regression tests
- renderButtonThumbnail: null on empty button, renders shape layers,
accepts custom images map.
- i18n: renameScriptTrack / deleteScriptTrack / dialog keys resolve.
- scrub-handle-obscured logic (visible at t=0, hidden when playhead is
scrolled off-screen, still visible when playhead is far to the
right of the scroll offset).
- Updated button state-scrubber expectations to match
BUTTON_STATE_TIMES (normal=1, hover=2, pressed=3, disabled=4) and
that hit-mode parks at normal=1 rather than 0.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
thandClaude Opus 4.7