feat: multi-language interface (zh-CN/zh-TW/en/ja), multilingual offline changelog, settings robustness

i18n
- shared/i18n: dependency-free t() with flat per-namespace dictionaries
  (common/settings/workspace/terminal/ssh/panels/main), zh-CN fallback
- language picker in Settings -> System; antd ConfigProvider locale follows it
- main process tracks the language too: tray menu, close prompt, ssh/sftp/
  zmodem errors and the log TUI marker are translated; tray rebuilds on change

changelog
- CHANGELOG.md (zh-CN canonical) + .zh-TW/.en/.ja, bundled via ?raw and read
  per interface language with per-version fallback to zh-CN (no network)
- sync-changelog.cjs merges RELEASE_NOTES[.<lang>].md per release; release.cjs
  refuses to publish without a zh-CN entry for the version

settings robustness
- closeAction 'ask' survives the sanitizer (was silently coerced to 'tray',
  which made the 'ask every time' option dead)
- highlight rules are repaired instead of dropped: string priority, 0/1
  enabled, missing fg colour; unknown fields preserved
- load-time warnings are written to settings-warnings.log (deduped, capped)

terminal/UI
- configurable terminal toolbar: open working directory (default on), session
  log recording (off), open logs folder (off)
- global shortcut field records key combos (modifier or F-key required)
- input suggestions + command history default to off, with a one-time reset
  migration for existing installs
- settings dialog scrolling fixed (antd v6 renamed the tabs container), theme
  gallery nested scrollbar removed, joined segmented pickers with readable
  selected-state text

tests: settings-store.mjs (15 checks) added; commands-store.mjs updated for
the new off-by-default history setting

src/shared/i18n/dicts/zh-CN/main.ts

@@ -0,0 +1,56 @@
+/** 命名空间：main（主进程文案：托盘、关闭询问、更新器）。归属：主进程维护者。 */
+const main: Record<string, string> = {
+  'main.tray.showWindow': '显示主窗口',
+  'main.tray.closeAction': '关闭按钮行为',
+  'main.tray.askEveryTime': '每次询问',
+  'main.tray.minimizeToTray': '最小化到托盘',
+  'main.tray.exitDirectly': '直接退出',
+  'main.tray.exit': '退出',
+  'main.tray.balloonTitle': '已最小化到托盘',
+  'main.tray.balloonContent': '终端会话仍在后台运行，点击托盘图标可恢复窗口。',
+  'main.tray.closeTitle': '关闭 OpenTerminal',
+  'main.tray.closeMessage': '最小化到托盘，还是直接退出？',
+  'main.tray.closeDetail': '最小化到托盘时终端会话保持运行。',
+  'main.tray.rememberChoice': '记住我的选择，不再询问',
+
+  'main.updater.feedFailed': '国内源: {gitea}；GitHub: {github}',
+
+  'main.ssh.connectTimeout': '连接超时 ({host}:{port})',
+  'main.ssh.saveFingerprintFailed': '保存主机指纹失败: {detail}',
+  'main.ssh.hostKeyRejected': '用户拒绝了主机指纹',
+  'main.ssh.connectFailed': '连接失败 {host}:{port}: {detail}',
+  'main.ssh.shellOpenFailed': '无法打开 SSH shell ({host}:{port}): {detail}',
+  'main.ssh.initFailed': 'SSH 连接初始化失败 ({host}:{port}): {detail}',
+  'main.ssh.readKeyFailed': '无法读取私钥文件 {path}: {detail}',
+
+  'main.sftp.sessionGone': 'SSH 会话不存在或已断开',
+  'main.sftp.deleteFailed': '删除失败: {detail}',
+  'main.sftp.invalidMode': '非法权限值: {mode}',
+  'main.sftp.invalidUidGid': '非法 uid/gid',
+  'main.sftp.commandExitCode': '命令退出码 {code}',
+  'main.sftp.cancelled': '已取消',
+
+  'main.zmodem.transferFailed': '传输失败',
+  'main.zmodem.transferTimeout': '传输超时',
+  'main.zmodem.sendFailed': '发送失败',
+  'main.zmodem.uploadFailed': '上传失败',
+  'main.zmodem.receiveFailed': '接收失败',
+  'main.zmodem.abnormal': 'ZMODEM 传输异常',
+  'main.zmodem.cancelled': '已取消',
+  'main.zmodem.offerTimedOut': '未选择文件，已取消',
+  'main.zmodem.sessionInvalid': '会话已失效',
+  'main.zmodem.sessionCreateFailed': '无法建立 ZMODEM 会话',
+  'main.zmodem.noSaveDir': '未指定保存目录',
+  'main.zmodem.noFiles': '未选择文件',
+
+  'main.ipc.connectionMissing': '连接书签不存在 ({id})',
+
+  'main.sysinfo.sessionGone': 'SSH 会话不存在或已断开',
+  'main.sysinfo.execFailed': 'SSH exec 失败',
+  'main.sysinfo.parseFailed': '解析失败: {message}',
+  'main.pty.serviceNotReady': 'SSH 会话服务尚未初始化',
+  'main.pty.missingConnectionId': 'SSH 会话缺少 connectionId',
+  'main.log.tuiOmitted': '全屏界面(TUI)输出已省略'
+}
+
+export default main