Initial scaffold: pnpm workspace monorepo with backend + frontend

- Backend: Express + WebSocket proxy (tsx watch, strict TS, ESM)
- Frontend: React 19 + Vite + Monaco + Tailwind v4 + Tauri v2
- pnpm workspace at root for single-install workflow
- AGENTS.md with architectural constraints and commands
- Removed Tauri greet demo, added minimal App shell
- No external database, Git-as-Database philosophy

typst-leaf-frontend/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "typst-leaf-frontend",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "tauri": "tauri",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@monaco-editor/react": "^4.7.0",
+    "@tauri-apps/api": "^2",
+    "@tauri-apps/plugin-opener": "^2",
+    "monaco-languageclient": "^10.7.0",
+    "monaco-vim": "^0.4.4",
+    "react": "^19.1.0",
+    "react-dom": "^19.1.0",
+    "vscode-ws-jsonrpc": "^3.5.0",
+    "zod": "^3.24.5"
+  },
+  "devDependencies": {
+    "@tailwindcss/vite": "^4.1.6",
+    "@types/react": "^19.1.8",
+    "@types/react-dom": "^19.1.6",
+    "@vitejs/plugin-react": "^4.6.0",
+    "tailwindcss": "^4.1.6",
+    "typescript": "~5.8.3",
+    "vite": "^7.0.4",
+    "@tauri-apps/cli": "^2"
+  },
+  "packageManager": "pnpm@10.23.0"
+}