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/i18n/locales/zh-Hant.json

@@ -2875,13 +2875,13 @@
   "Replace the selected shot with the current view": "用當前視角替換所選鏡頭",
   "Click a shot to select it, double-click to rename.": "單擊鏡頭即可選中，雙擊可重命名。",
   "scene|PLAY": "播放",
-  "Play the whole scene from its first shot": "從第一個鏡頭開始播放整個場景",
   "Stop playback (Esc)": "停止播放（Esc）",
-  "Play only the shot after the selected one": "僅播放所選鏡頭的下一個鏡頭",
   "SAVE & SHARE": "保存與分享",
   "Download every scene as a JSON file you can import later": "將所有場景下載為 JSON 文件，以便日後導入",
   "Load scenes from an exported JSON file": "從導出的 JSON 文件加載場景",
   "Download the timing log of the last play": "下載上次播放的計時日誌",
-  "Edit the scene title and description": "編輯場景標題和描述",
-  "Share this scene as a link or file": "以鏈接或文件形式分享此場景"
+  "Play from this scene through the rest of the project": "從此場景開始播放項目中的其餘場景",
+  "Play the shot after the selected one, moving on to the next scene when needed": "播放所選鏡頭的下一個鏡頭，必要時進入下一個場景",
+  "Edit anchors, data packs and shot details": "編輯錨點、數據包和鏡頭詳情",
+  "Download this scene as JSON or an asset bundle": "將此場景下載為 JSON 或資源包"
 }