Rename the Scenes panel to Authoring and lay it out in steps

The panel reads AUTHORING and groups its controls under SCENE, SHOTS,
PREVIEW and SAVE & SHARE headings, with the EDIT DETAILS / SHARE SCENE
row moved beside EXPORT / IMPORT. Text is larger with more contrast,
shots are numbered, every action has a tooltip and the status line is a
live region. Outside playback, buttons that would do nothing are
disabled. New labels are translated in every shipped language; PLAY
uses its own catalog context apart from the radio's PLAY.

src/i18n/locales/zh-Hant.json

@@ -2710,13 +2710,7 @@
   "ALL": "全部",
   "FLAT": "平面",
   "SINCE": "起始時間",
-  "SCENES": "場景",
-  "Scene recipe": "場景方案",
-  "NEW": "新建",
-  "CAPTURE SHOT": "保存鏡頭",
   "UPDATE SHOT": "更新鏡頭",
-  "START": "啟動",
-  "EXPORT PRESETS": "導出預設",
   "IMPORT": "導入",
   "RUN LOG": "運行日誌",
   "POWER UP": "增強",
@@ -2866,5 +2860,28 @@
   },
   "S2 Underground publishes these KMZ products to GitHub. New uploads are detected within seconds and replace the previous edition automatically. Click a marker for its report.": "S2 Underground 在 GitHub 發布這些 KMZ 產品。新上傳的內容會在數秒內被檢測到，並自動替換舊版本。點擊標記查看報告。",
   "routing busy — too many routes at once": "路線服務繁忙：同時請求的路線過多",
-  "route proxy error": "路線代理出錯"
+  "route proxy error": "路線代理出錯",
+  "AUTHORING": "創作",
+  "Create and edit scenes": "建立和編輯場景",
+  "SCENE": "場景",
+  "Scene": "場景",
+  "NEW SCENE": "新建場景",
+  "Start a new, empty scene": "新建一個空場景",
+  "DELETE": "刪除",
+  "Delete this scene and all of its shots": "刪除此場景及其所有鏡頭",
+  "SHOTS": "鏡頭",
+  "+ CAPTURE SHOT": "+ 保存鏡頭",
+  "Add the current view, style and layers as the next shot": "將當前視角、樣式和圖層添加為下一個鏡頭",
+  "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"
 }