0.10.3: preloader + multi-scene export parity, jumpToScene rewinds

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

src/stores/scene.ts

@@ -1973,11 +1973,13 @@ export const useSceneStore = defineStore('scene', {
     /** Activate a page by id. Clears any drill-down state (clip-edit,
      *  button-edit, selections, drawing) so the new page isn't shown
      *  through the lens of a context that belongs to another page.
-     *  Playback state is left alone — in the editor, flipping scenes
-     *  is a navigation gesture and shouldn't force play. The fullscreen
-     *  preview takes care of auto-playing on its own (the activeSceneId
-     *  watcher re-mounts the preview player with play enabled). */
-    switchScene(id: string): boolean {
+     *  Playback state is left alone by default — in the editor,
+     *  flipping scenes is a navigation gesture and shouldn't force
+     *  play or rewind. Script-fired or button-fired jumps use
+     *  `{ resetPlayhead: true }` instead so the incoming scene starts
+     *  at its own in-point rather than inheriting the previous
+     *  scene's paused frame. */
+    switchScene(id: string, options?: { resetPlayhead?: boolean }): boolean {
       if (!this.project.scenes.find((s) => s.id === id)) return false
       this.project.activeSceneId = id
       this.activeClipId = null
@@ -1990,6 +1992,9 @@ export const useSceneStore = defineStore('scene', {
       this.drawingMode = null
       this.drawingAssetId = null
       this.drawingLayerId = null
+      if (options?.resetPlayhead) {
+        this.playhead = this.playbackIn
+      }
       return true
     },
     renameScene(id: string, name: string): boolean {
@@ -2623,7 +2628,10 @@ export const useSceneStore = defineStore('scene', {
           self.pause()
         },
         switchScene(sceneId: string) {
-          self.switchScene(sceneId)
+          // Script/button jumps restart the target scene at its in-point.
+          // Drawer clicks go through store.switchScene directly and keep
+          // the current playhead — navigation vs. transition.
+          self.switchScene(sceneId, { resetPlayhead: true })
         },
         warn(msg: string) {
           // eslint-disable-next-line no-console