fix(ui): open app deep links from chat after confirmation (#2932)

* fix(ui): open app deep links from chat after confirmation

DOMPurify's default URI policy stripped href from anchors with custom
application schemes (obsidian://, vscode://, ...), so every app link
rendered in chat was dead across web, desktop, VS Code, and mobile.

- Classify safe app-link schemes in lib/url.ts (browser-handled,
  scriptable, webview-internal, network, and self-deep-link schemes
  stay excluded) and let openExternalUrl accept them
- Keep app-link hrefs through the markdown sanitize hook
- Intercept app-link clicks in the markdown renderer and route them
  through a confirmation dialog (Trust and open / Open once, dismiss
  to cancel) mounted in the desktop/web app root and the mobile shell
- Persist per-device trusted schemes in a zustand store; trusted
  schemes open without asking again

* feat(settings): manage trusted app link schemes in General

Add an App links section to Settings > General listing the application
schemes trusted on this device with a delete action; removing a scheme
restores the confirmation dialog for it. Register the section in
settings search.

* fix(ui): enforce app link confirmation

* fix(ui): handle app links by runtime

* fix(vscode): keep app links unsupported

* fix(settings): clarify trusted app links

---------

Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

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

@@ -1551,6 +1551,12 @@ export const dict: Record<I18nKey, string> = {
   'diffView.reviewDialog.toast.noSessionDirectory': '세션 디렉터리를 사용할 수 없습니다',
   'diffView.reviewDialog.toast.startFailed': '리뷰 흐름을 시작하지 못했습니다',
   'chat.history.loadOlder': '이전 메시지 불러오기',
+  'chat.appLink.confirm.title': '이 링크를 다른 앱에서 열까요?',
+  'chat.appLink.confirm.description': '이 채팅 링크는 {scheme} 프로토콜을 사용하며 다른 앱에서 열립니다.',
+  'chat.appLink.confirm.descriptionPlain': '이 채팅 링크는 다른 앱에서 열립니다.',
+  'chat.appLink.confirm.cancel': '취소',
+  'chat.appLink.confirm.open': '한 번만 열기',
+  'chat.appLink.confirm.trustAndOpen': '신뢰하고 열기',
   'chat.autoReview.title': '코드 리뷰 루프 실행 중',
   'chat.autoReview.status.waitingForReviewer': '리뷰어를 기다리는 중',
   'chat.autoReview.status.waitingForImplementer': '구현 에이전트를 기다리는 중',