feat(ui,server): surface active instance service URLs in About settings (#2669)

Show the running instance's local server URL and tunnel URL (when a
tunnel is active) as labeled, click-to-open buttons on the About page.
/api/system/info now reports the instance port and tunnel URL, resolved
lazily from the tunnel runtime so each Git-worktree instance identifies
itself in the UI without parsing terminal output.

Refs OPE-194

packages/ui/src/lib/i18n/messages/ko.settings.ts

@@ -431,6 +431,9 @@ export const settingsDict = {
   'settings.openchamber.about.title': 'OpenChamber 정보',
   'settings.openchamber.about.field.version': '버전',
   'settings.openchamber.about.field.openCodeVersion': 'OpenCode 버전',
+  'settings.openchamber.about.field.instanceUrls': '인스턴스 URL',
+  'settings.openchamber.about.field.applicationUrl': '애플리케이션',
+  'settings.openchamber.about.field.tunnelUrl': '터널',
   'settings.openchamber.about.state.checking': '확인 중...',
   'settings.openchamber.about.state.upToDate': '최신 상태',
   'settings.openchamber.about.state.unknown': '알 수 없음',