feat: shortcut recorder, configurable terminal toolbar, offline changelog

- Global shortcut setting: press-to-record input (Esc cancels, Backspace
  clears); requires a modifier or F-key so plain typing can't be hijacked
- Terminal toolbar: three settings-gated buttons — session-log record
  (default off), open logs dir (default off), open working directory
  (default on, new; local sessions only, cwd tracked via cd/OSC 7)
- Input suggestions + command history now default off, with a one-time
  migration that resets persisted true values for existing installs
- Settings dialog: fix broken scrolling — antd v6 renamed the Tabs scroll
  container to .ant-tabs-body-holder; theme gallery drops its nested
  scroll (single outer scrollbar)
- Offline changelog: CHANGELOG.md at repo root bundled via ?raw; About tab
  reads it first, network sources stay as fallback; scripts/sync-changelog.cjs
  merges RELEASE_NOTES.md per release (release.cjs fails without an entry)
- commands.ts history prefs default aligned with new off-by-default

scripts/sync-changelog.cjs

@@ -0,0 +1,39 @@
+/* Merge RELEASE_NOTES.md into CHANGELOG.md as the section for the current
+   package.json version. Idempotent: skips if the version is already present.
+   Run BEFORE `npm run dist` — the changelog is bundled into the app.
+   Usage: node scripts/sync-changelog.cjs */
+const fs = require('node:fs')
+const path = require('node:path')
+
+const ROOT = path.join(__dirname, '..')
+const pkgVersion = JSON.parse(fs.readFileSync(path.join(ROOT, 'package.json'), 'utf8')).version
+const notesPath = path.join(ROOT, 'RELEASE_NOTES.md')
+const changelogPath = path.join(ROOT, 'CHANGELOG.md')
+const HEADER = '# OpenTerminal 更新日志'
+
+const notes = fs.readFileSync(notesPath, 'utf8')
+  // Drop the notes' own leading title / `## vX` heading — the section heading
+  // is constructed here so CHANGELOG stays uniform (`## vX.Y.Z - date`).
+  .replace(/^#.*\n/gm, '')
+  .replace(new RegExp(`^## v${pkgVersion}.*\\n`), '')
+  .replace(/^\s+/, '')
+  .trimEnd()
+
+if (!notes) {
+  console.error('RELEASE_NOTES.md is empty — write release notes first')
+  process.exit(1)
+}
+
+const section = `## v${pkgVersion} - ${new Date().toISOString().slice(0, 10)}\n\n${notes}\n`
+const existing = fs.existsSync(changelogPath) ? fs.readFileSync(changelogPath, 'utf8') : ''
+if (existing.includes(`## v${pkgVersion} `)) {
+  console.log(`CHANGELOG.md already has v${pkgVersion} — nothing to do`)
+  process.exit(0)
+}
+
+const updated = existing
+  ? existing.replace(new RegExp(`^(${HEADER}\\n\\n)`), `$1${section}\n`)
+  : `${HEADER}\n\n${section}`
+
+fs.writeFileSync(changelogPath, updated, 'utf8')
+console.log(`CHANGELOG.md: added v${pkgVersion} (${notes.split('\n').length} lines)`)