优化后端代码质量基础

apps/backend/package-lock.json

@@ -15,6 +15,7 @@
         "@types/express": "^5.0.6",
         "@types/node": "^25.6.0",
         "@types/pg": "^8.20.0",
+        "prettier": "^3.8.3",
         "tsx": "^4.22.3",
         "typescript": "^6.0.2"
       }
@@ -1299,6 +1300,22 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/prettier": {
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.3.tgz",
+      "integrity": "sha512-7igPTM53cGHMW8xWuVTydi2KO233VFiTNyF5hLJqpilHfmn8C8gPf+PS7dUT64YcXFbiMGZxS9pCSxL/Dxm/Jw==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
     "node_modules/proxy-addr": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",