fix: backend won't start

backend/package.json

@@ -5,8 +5,9 @@
   "main": "server.ts",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "start": "node server.ts",
-    "dev": "node --watch server.ts"
+    "start": "node dist/server.js",
+    "dev": "tsx --watch server.ts",
+    "build": "babel server.ts routes services --extensions .ts --out-dir dist --copy-files"
   },
   "keywords": [],
   "author": "",
@@ -22,7 +23,12 @@
     "mysql2": "^3.16.0"
   },
   "devDependencies": {
+    "@babel/cli": "^8.0.1",
+    "@babel/core": "^8.0.1",
+    "@babel/preset-env": "^8.0.2",
+    "@babel/preset-typescript": "^8.0.1",
     "@types/express": "^5.0.6",
-    "@types/node": "^26.1.0"
+    "@types/node": "^26.1.0",
+    "tsx": "^4.23.0"
   }
 }