refactor(desktop): 从 Tauri 迁移到 Electrobun

- 移除 Tauri v2 代码 (src-tauri/, copy.ts)
- 添加 Electrobun 配置和入口 (electrobun.config.ts, src/bun/index.ts)
- 更新 package.json 使用 catalog 管理 electrobun 依赖
- 移除 server 中的 @tauri-apps/api 依赖
- 更新 AGENTS.md 文档

apps/desktop/package.json

@@ -4,16 +4,18 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "build": "bun run copy && tauri build",
-    "copy": "rm -rf binaries && bun --bun copy.ts",
-    "dev": "bun run copy && tauri dev"
+    "build": "electrobun build --env=canary",
+    "build:stable": "electrobun build --env=stable",
+    "dev": "electrobun dev",
+    "fix": "biome check --write",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "electrobun": "catalog:"
   },
   "devDependencies": {
-    "@effect/schema": "catalog:",
     "@furtherverse/tsconfig": "workspace:*",
-    "@tauri-apps/cli": "catalog:",
     "@types/bun": "catalog:",
-    "effect": "catalog:",
     "typescript": "catalog:"
   }
 }