feat: add TypeScript definitions and utility functions for date formatting

- Created a global TypeScript declaration for the txadmin interface on the Window object.
- Implemented date formatting utilities using date-fns with Spanish locale support.
- Added TypeScript configuration files for app, Electron, and Node environments.
- Set up Vite configuration for React application.

txadmin/package.json

@@ -0,0 +1,58 @@
+{
+  "name": "txadmin",
+  "private": true,
+  "version": "0.0.0",
+  "main": "dist-electron/main.js",
+  "scripts": {
+    "dev": "concurrently -k \"vite\" \"tsc -p tsconfig.electron.json --watch --preserveWatchOutput\" \"wait-on tcp:5173 dist-electron/main.js && cross-env VITE_DEV_SERVER_URL=http://localhost:5173 electron .\"",
+    "desktop": "npm run build && electron .",
+    "typecheck": "tsc -b && tsc -p tsconfig.electron.json --noEmit",
+    "build": "npm run typecheck && vite build && tsc -p tsconfig.electron.json",
+    "package:win": "npm run build && cross-env CSC_IDENTITY_AUTO_DISCOVERY=false electron-builder --win portable --config.directories.output=release-portable",
+    "lint": "oxlint",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "axios": "^1.18.1",
+    "date-fns": "^4.4.0",
+    "framer-motion": "^12.42.2",
+    "lucide-react": "^1.24.0",
+    "react": "^19.2.7",
+    "react-dom": "^19.2.7",
+    "react-router-dom": "^7.18.1"
+  },
+  "devDependencies": {
+    "@types/node": "^24.13.2",
+    "@types/react": "^19.2.17",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.3",
+    "oxlint": "^1.71.0",
+    "typescript": "~6.0.2",
+    "concurrently": "^9.2.1",
+    "cross-env": "^10.1.0",
+    "electron": "^39.2.7",
+    "electron-builder": "^26.0.12",
+    "vite": "^8.1.1",
+    "wait-on": "^9.0.3"
+  },
+  "build": {
+    "appId": "com.turnosxpress.txadmin",
+    "productName": "txadmin",
+    "asar": false,
+    "directories": {
+      "output": "release"
+    },
+    "files": [
+      "dist/**/*",
+      "dist-electron/**/*",
+      "build/**/*",
+      "package.json"
+    ],
+    "win": {
+      "icon": "build/icon.png",
+      "target": [
+        "portable"
+      ]
+    }
+  }
+}