Scaffold CommiTea: yarn workspaces, Electron shell, core label schema, design system

- apps/desktop: electron-vite + React + Tailwind mapped onto design tokens
  (preflight off; tokens/base.css owns the reset); boots to a Reginald
  placeholder proving fonts/tokens/core wiring
- packages/core: pure TS; gitea label schema (est/*, p/*, deadline/hard)
  with pessimistic conflict resolution + 15 unit tests
- docs/design: full design handoff (tokens, 16 component contracts,
  interactive 14-screen prototype, Reginald voice rules)
- docs/PLAN.md: product plan (purity rule, pm-state repo, deterministic
  scheduler + Monte Carlo, directive log)
- Deliberate deviation from novelpad stack: no ElectricSQL/PGlite — local
  store is a rebuildable cache over gitea REST/webhooks (better-sqlite3
  in main process, arriving in P1)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

apps/desktop/package.json

@@ -0,0 +1,30 @@
+{
+  "name": "@commitea/desktop",
+  "private": true,
+  "type": "module",
+  "main": "./out/main/index.js",
+  "scripts": {
+    "dev": "electron-vite dev 2>&1 | tee desktop.log",
+    "build": "electron-vite build",
+    "start": "electron-vite preview",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@commitea/core": "workspace:*",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@types/node": "^22.13.1",
+    "@types/react": "^18.3.18",
+    "@types/react-dom": "^18.3.5",
+    "@vitejs/plugin-react": "^4.3.4",
+    "autoprefixer": "^10.4.20",
+    "electron": "^34.0.0",
+    "electron-vite": "^3.1.0",
+    "postcss": "^8.5.1",
+    "tailwindcss": "^3.4.17",
+    "typescript": "^5.7.3",
+    "vite": "^6.1.0"
+  }
+}