Add desktop (Electron) packaging and release distribution (#1147)

* Add desktop packaging workflow

* Add desktop package homepage

* Fix desktop default credential prompt

* Suppress default credential prompt on desktop

* Publish desktop artifacts on release; reduce CI to PR smoke test

Add desktop-release.yml triggered on release publish (mirroring
docker-publish.yml) to build all platforms and upload .dmg/.exe/
.AppImage/.deb to the GitHub Release.

Trim build.yml desktop job to a PR-only Linux x64 smoke test, since
release artifacts are now produced by desktop-release.yml. This drops
per-push and macOS/Windows packaging from regular CI.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* Fix desktop Hermes data home on Windows

---------

Co-authored-by: xingzhi <chuzihao.czh@alibaba-inc.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

packages/desktop/tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "CommonJS",
+    "moduleResolution": "node",
+    "outDir": "dist",
+    "rootDir": "src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "sourceMap": true,
+    "declaration": false
+  },
+  "include": ["src/**/*"]
+}