refactor: migrate entire project to TypeScript

package.json

@@ -1,12 +1,14 @@
+{
 {
   "name": "trace-backend",
   "version": "1.0.0",
   "description": "浙江贝凡企业授权管理系统 - 后端服务",
-  "main": "server.js",
+  "main": "dist/server.js",
   "scripts": {
-    "start": "node server.js",
-    "dev": "nodemon server.js",
-    "init-db": "node scripts/init-db.js"
+    "start": "node dist/server.js",
+    "dev": "nodemon --exec tsx server.ts",
+    "build": "tsc",
+    "init-db": "tsx scripts/init-db.ts"
   },
   "dependencies": {
     "bcryptjs": "^3.0.3",
@@ -17,7 +19,14 @@
     "jsonwebtoken": "^9.0.2"
   },
   "devDependencies": {
-    "nodemon": "^3.0.1"
+    "@types/cors": "^2.8.19",
+    "@types/express": "^5.0.6",
+    "@types/jsonwebtoken": "^9.0.10",
+    "@types/node": "^25.2.1",
+    "nodemon": "^3.0.1",
+    "ts-node": "^10.9.2",
+    "tsx": "^4.21.0",
+    "typescript": "^5.9.3"
   },
   "author": "",
   "license": "MIT"