feat: migrar dashboard a React 19 + TypeScript + Vite + Tailwind v4

- Módulo HITL (/cases): 6 patrones de formularios dinámicos para 53 tipos de caso con validación Zod
- Módulo Monitor (/monitor): streaming token-a-token en tiempo real, auto-scroll y notas internas vía WebSocket
- Arquitectura híbrida: REST (canal autoritativo) + WebSocket (difusión/streaming)
- MSW para desarrollo sin backend, hooks de notificaciones/sonido/título preservados
- Backend legacy movido a legacy/, archivos residuales eliminados de raíz

package.json

@@ -1,19 +1,42 @@
 {
   "name": "claro-cases",
-  "version": "1.0.0",
-  "description": "Claro Cases tracking system with Postgres and live UI updates",
-  "main": "server.js",
+  "private": true,
+  "version": "2.0.0",
+  "type": "module",
+  "description": "Claro Cases - Dashboard de gestión de casos y monitoreo",
   "scripts": {
-    "start": "node server.js",
-    "dev": "nodemon server.js"
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "preview": "vite preview",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "lint": "tsc --noEmit"
   },
   "dependencies": {
-    "better-sqlite3": "^12.11.1",
-    "cors": "^2.8.5",
-    "dotenv": "^16.4.5",
-    "express": "^4.19.2"
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
+    "react-router-dom": "^7.5.0",
+    "zustand": "^5.0.4",
+    "zod": "^3.24.4",
+    "date-fns": "^4.1.0",
+    "lucide-react": "^0.511.0"
   },
   "devDependencies": {
-    "nodemon": "^3.1.0"
+    "@tailwindcss/vite": "^4.1.6",
+    "@testing-library/jest-dom": "^6.6.3",
+    "@testing-library/react": "^16.3.0",
+    "@types/react": "^19.1.2",
+    "@types/react-dom": "^19.1.2",
+    "@vitejs/plugin-react": "^4.4.1",
+    "msw": "^2.7.5",
+    "tailwindcss": "^4.1.6",
+    "typescript": "~5.7.2",
+    "vite": "^6.3.2",
+    "vitest": "^3.1.2"
+  },
+  "msw": {
+    "workerDirectory": [
+      "public"
+    ]
   }
 }