Address review: playable PLAY/NEXT, visible rename editor, accurate copy

- PLAY and NEXT continue into the following scenes, so they stay
  enabled while any scene in the project has a shot, not only the
  selected one.
- Renaming a shot drops the number and ellipsis so the editor is no
  longer hidden; qa-scene-controls checks a long rename stays visible.
- PLAY, NEXT, EDIT DETAILS and SHARE SCENE tooltips describe what the
  buttons do, translated in every shipped language.
- The primary actions and the file row keep a hover state.
- Docs: the EXPORT rename in DIRECTOR-SHARING and the playback button
  states in CURRENT-STATE are accurate.
- Test the voice "authoring" alias through set_panel_open.

src/ui/sceneControls.js

@@ -220,7 +220,11 @@ export class SceneControls {
     const shots = scene?.shots ?? [];
     presentSceneButtons(this.elements, running, state.hasRun, {
       hasScene: !!scene,
-      shotCount: shots.length,
+      // PLAY and NEXT run on into the following scenes.
+      playableShots: (state.scenes ?? []).reduce(
+        (total, item) => total + (item.shots?.length ?? 0),
+        0,
+      ),
       hasSelectedShot: shots.some((shot) => shot.id === state.selectedShotId),
     });
     this.elements.panel?.classList.toggle('has-shots', shots.length > 0);

src/ui/sceneControls.test.mjs

@@ -184,7 +184,16 @@ test('Authoring disables idle actions that would do nothing', () => {
     assert.equal(f.elements.update.disabled, true);
     assert.equal(f.elements.start.disabled, false);
 
+    // PLAY and NEXT run on into the following scenes, so an empty selected
+    // scene beside one with shots keeps them available.
     f.state.scenes[0].shots = [];
+    f.state.scenes.push({ id: 'scene-b', title: 'B', shots: [{ id: 'b1' }] });
+    f.owner.setButtons(false);
+    assert.equal(f.elements.start.disabled, false);
+    assert.equal(f.elements.next.disabled, false);
+    assert.equal(f.elements.update.disabled, true);
+
+    f.state.scenes.pop();
     f.owner.setButtons(false);
     assert.equal(f.elements.start.disabled, true);
     assert.equal(f.elements.next.disabled, true);

src/ui/scenePresentation.js

@@ -173,22 +173,24 @@ export function presentSceneSelection(element, selectedShotId) {
 }
 
 /**
- * Everything but STOP is off while a scene plays. Otherwise a button is off
- * when it would do nothing: DELETE and CAPTURE SHOT without a scene, UPDATE
- * SHOT without a selected shot, PLAY and NEXT on a scene with no shots.
+ * While a scene plays, the authoring and file actions here are off and STOP
+ * is on. Otherwise a button is off when it would do nothing: DELETE and
+ * CAPTURE SHOT without a scene, UPDATE SHOT without a selected shot, PLAY and
+ * NEXT when no scene in the project has a shot (both continue into the
+ * following scenes).
  */
 export function presentSceneButtons(
   elements,
   running,
   hasRun,
-  { hasScene = true, shotCount = 1, hasSelectedShot = true } = {},
+  { hasScene = true, playableShots = 1, hasSelectedShot = true } = {},
 ) {
   const idleOff = {
     delete: !hasScene,
     capture: !hasScene,
     update: !hasSelectedShot,
-    start: shotCount === 0,
-    next: shotCount === 0,
+    start: playableShots === 0,
+    next: playableShots === 0,
   };
   for (const name of [
     'start',

src/ui/sceneSharing.js

@@ -181,8 +181,12 @@ export function mountSceneSharing(
   bar.dataset.directorAuthoring = '';
   bar.className = 'scene-controls';
   const entries = [
-    [t('EDIT DETAILS'), t('Edit the scene title and description'), edit],
-    [t('SHARE SCENE'), t('Share this scene as a link or file'), share],
+    [t('EDIT DETAILS'), t('Edit anchors, data packs and shot details'), edit],
+    [
+      t('SHARE SCENE'),
+      t('Download this scene as JSON or an asset bundle'),
+      share,
+    ],
   ];
   const removers = [];
   for (const [text, title, fn] of entries) {

src/ui/styles/scenes.css

@@ -223,6 +223,14 @@ html:not([lang='en']) #scene-panel .scene-controls .scene-btn {
   background: transparent;
 }
 
+/* Keep the shared hover on the restyled actions. */
+#scene-panel .scene-btn-primary:hover:not(:disabled),
+#scene-panel .scene-file-controls .scene-btn:hover:not(:disabled) {
+  color: var(--accent);
+  border-color: var(--accent);
+  background: color-mix(in srgb, var(--accent) 16%, transparent);
+}
+
 .scene-shot-hint {
   margin: 0 0 8px;
   font-size: 11px;
@@ -311,6 +319,16 @@ html:not([lang='en']) #scene-panel .scene-controls .scene-btn {
   color: var(--text-primary);
 }
 
+/* While renaming, the label holds only the editor at full width. */
+.scene-shot-label:has(.scene-shot-rename) {
+  overflow: visible;
+  white-space: normal;
+}
+
+.scene-shot-label:has(.scene-shot-rename)::before {
+  content: none;
+}
+
 /* Shots are numbered 01, 02… in playback order. */
 .scene-shot-label::before {
   content: counter(scene-shot, decimal-leading-zero);

src/ui/templates/layer-panels.html

@@ -166,9 +166,9 @@
       <p class="scene-shot-hint" data-i18n>Click a shot to select it, double-click to rename.</p>
       <p class="scene-step-heading" data-i18n>PREVIEW</p>
       <div class="scene-controls">
-        <button id="scene-start-btn" type="button" class="gev-action-button scene-btn scene-btn-primary" title="Play the whole scene from its first shot" data-i18n-title data-i18n-runtime>PLAY</button>
+        <button id="scene-start-btn" type="button" class="gev-action-button scene-btn scene-btn-primary" title="Play from this scene through the rest of the project" data-i18n-title data-i18n-runtime>PLAY</button>
         <button id="scene-stop-btn" type="button" class="gev-action-button gev-action-button--danger scene-btn scene-btn-danger" title="Stop playback (Esc)" data-i18n data-i18n-title>STOP</button>
-        <button id="scene-next-btn" type="button" class="gev-action-button scene-btn" title="Play only the shot after the selected one" data-i18n data-i18n-title>NEXT</button>
+        <button id="scene-next-btn" type="button" class="gev-action-button scene-btn" title="Play the shot after the selected one, moving on to the next scene when needed" data-i18n data-i18n-title>NEXT</button>
       </div>
       <p class="scene-step-heading" data-i18n>SAVE &amp; SHARE</p>
       <div class="scene-controls scene-file-controls">