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.

docs/CURRENT-STATE.md

@@ -1176,12 +1176,14 @@ The panel is titled Authoring and is laid out in four labelled steps: SCENE
 (picker on its own row, NEW SCENE, DELETE), SHOTS (+ CAPTURE SHOT, UPDATE SHOT,
 the numbered shot list and a select/rename hint), PREVIEW (PLAY, STOP, NEXT) and
 SAVE & SHARE (EXPORT, IMPORT, RUN LOG, then the EDIT DETAILS / SHARE SCENE row).
-Every button in the panel's step rows has a tooltip, and the status line is a
-polite live region. Outside
-playback a button that would do nothing is disabled: DELETE and CAPTURE SHOT
-without a scene, UPDATE SHOT without a selected shot, PLAY and NEXT on a scene
-with no shots. During playback everything but STOP stays disabled as before.
-PLAY uses the `scene|PLAY` catalog entry, apart from the radio's PLAY.
+Every button in the step rows has a tooltip, and the status line is a polite
+live region. Outside playback a button that would do nothing is disabled:
+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). During playback the authoring and file actions stay disabled
+and STOP is enabled, as before; RUN LOG follows the last run, and EDIT DETAILS /
+SHARE SCENE keep their own checks. PLAY uses the `scene|PLAY` catalog entry,
+apart from the radio's PLAY.
 
 Director clock listeners, interaction observers and scene release failures no
 longer leave the director inconsistent, and a phase error is kept when cleanup

docs/DIRECTOR-SHARING.md

@@ -42,7 +42,7 @@ field definitions. This is a basic draft editor, not a node graph or path editor
 SHARE SCENE exports only the selected scene. Download scene JSON preserves its
 camera, timing, layers, anchors, manifests, interactions and attribution, but
 contains no asset bytes. The recipient needs the referenced source registrations
-and files. Existing EXPORT PRESETS continues to export the entire project.
+and files. EXPORT (formerly EXPORT PRESETS) continues to export the entire project.
 
 For a bundle, select the declared pack files or a folder, then Download asset
 bundle. Folder paths match a manifest path either directly or after removing the