0.8.3: custom tooltips, editor-hide, pack script, settings reshuffle

Tooltips
- New v-tooltip directive + TooltipHost floating panel replace the
  native title attribute across 95+ sites (topbar, timeline, sidebar,
  properties, stage overlays, fullscreen preview, export dialog,
  clipart drawer, modals). Styled dark card with a configurable
  label + optional help line for inline documentation; screen
  readers still get an aria-label when the panel is disabled.
- Settings → Interface toggle (`ruwio:tooltipsEnabled`) hides the
  visual panel for users who know the app. IconButton now routes
  its title prop through v-tooltip so every existing call site is
  tooltip-aware without churn.

Editor-hide + export filter
- New `Layer.editorHidden` flag, eye toggle per layer row, skipped
  by the Konva stage and the mask-preview canvas path but honoured
  by exports and fullscreen preview (runtime untouched).
- Export dialog gets a "Skip hidden tracks" switch that strips
  editor-hidden layers from every format (scene JS, runtime,
  example HTML, MP4, WebM) on opt-in. Disabled when the scene has
  no hidden layers.

Button editor
- `+` buttons appear on empty state slots in button-timeline rows
  and duplicate the nearest keyframe (prev by preference, next
  otherwise) onto that slot. New `duplicateKeyframeAt` store
  action carries props, easing, hold, and bezier handles across.

Stage / interaction
- Plain left-click on the empty content view pans the viewport,
  but only when the pointer isn't over a Konva shape — transformer
  handles, vertex dots, and selection boxes that extend past the
  canvas edge keep their drag.

Settings reshuffle
- Timeline tab merged into Document (Duration + FPS sit under a
  new "Timing" sub-heading). New Interface tab gathers three
  global prefs: Show tooltips, Show locked tracks, Asset
  thumbnails — driven by shared composables so the existing
  toolbar toggles stay in sync. Interface-tab CSS defensively
  resets the scoped label flex-column + uppercase rule that was
  making the toggle row look like an accident.

Project identity + UX polish
- Favicon wired up (moved to public/favicon.ico, linked from
  index.html); scripts/pack.sh packs the minimum Vue project
  (src, index.html, configs, public) into a tarball with the
  right version in the filename, and `npm run pack` drives it.
- About dialog now credits Torsten Hoeltge.

Test infra
- Progress bar turns red mid-run on the first failure: runAll
  gets an onResult callback that TestOverlay uses to push each
  result into the reactive array incrementally.
- mountComponent in the test harness registers v-tooltip on the
  isolated app instance so IconButton's aria-label contract
  actually fires under test.

Regression tests
- duplicateKeyframeAt: copy fidelity (props, easing, hold),
  collision refusal, unknown-id guards, separated-track targeting.
- Shared composables: useTooltipPref and useAssetThumbsPref both
  return the same ref across calls and persist to localStorage.
- Tooltip contract: IconButton ships `aria-label` (not title);
  live-DOM smoke tests match on aria-label selectors now.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/devtools/TestOverlay.vue

@@ -141,7 +141,7 @@ async function run() {
   startedAt.value = performance.now()
   const snapshot = JSON.parse(JSON.stringify(store.$state))
   try {
-    results.value = await runAll(registerAllTests, {
+    await runAll(registerAllTests, {
       onProgress: (d, t) => {
         done.value = d
         total.value = t
@@ -150,6 +150,12 @@ async function run() {
         currentSuite.value = suiteName
         currentTest.value = testName
       },
+      // Push each result as it arrives so `failedSoFar` updates live
+      // — that's what drives the progress bar turning red the moment
+      // any test fails, instead of only at the end of the run.
+      onResult: (r) => {
+        results.value.push(r)
+      },
       interTestDelayMs: 80,
     })
   } finally {
@@ -230,16 +236,16 @@ onBeforeUnmount(() => document.removeEventListener('keydown', onKeyDown))
               <button
                 class="tbtn"
                 :disabled="!results.length"
-                :title="clipboardStatus === 'copied' ? t('tests.copiedTooltip') : t('tests.copyTooltip')"
+                v-tooltip="clipboardStatus === 'copied' ? t('tests.copiedTooltip') : t('tests.copyTooltip')"
                 :class="{ copied: clipboardStatus === 'copied', failed: clipboardStatus === 'failed' }"
                 @click="copyReport"
               >
                 <PhClipboardText :size="14" />
               </button>
-              <button class="tbtn" :title="t('tests.runAgain')" @click="run">
+              <button class="tbtn" v-tooltip="t('tests.runAgain')" @click="run">
                 <PhArrowClockwise :size="14" />
               </button>
-              <button class="tbtn" :title="t('tests.close')" @click="close">
+              <button class="tbtn" v-tooltip="t('tests.close')" @click="close">
                 <PhX :size="14" weight="bold" />
               </button>
             </div>