Keep Authoring within its stack and theme, and cover its wiring

- Keep the documented 72px / flex-grow 1 action sizing and the 360px
  panel width; the larger type applies to the Authoring panel only, so
  CCTV and Street Level buttons are unchanged.
- Scope the primary and file-row styles to the panel so Cyber's shared
  button surface no longer overrides them.
- Shorten the scene PLAY in Spanish and Russian so it does not break
  mid-word, and fix two translation inconsistencies.
- Map the spoken name "authoring" to the panel.
- Clear the has-shots marker when the controls are destroyed.
- Test the idle button states through published changes, the PLAY
  translation context, and where the sharing row is placed.

src/ui/sceneControls.js

@@ -272,6 +272,7 @@ export class SceneControls {
     ])
       remove();
     if (this.elements.shots) this.elements.shots.textContent = '';
+    this.elements.panel?.classList.toggle('has-shots', false);
     presentSceneRuntime(this.elements.runtime, '');
     this.setPlaybackActive(false);
   }