fix: auto-fix code quality [skip ci]

services/backend/package.json

@@ -2,16 +2,22 @@
   "name": "discord-moderation-backend",
   "version": "1.0.0",
   "description": "Backend service for Discord moderation monitoring",
+  "private": true,
   "type": "module",
   "main": "dist/index.js",
+  "packageManager": "pnpm@11.20.0",
+  "engines": {
+    "node": ">=22.12.0",
+    "pnpm": ">=9.0.0"
+  },
   "scripts": {
-    "dev": "tsx watch src/index.ts",
-    "start": "node dist/index.js",
     "build": "tsc",
-    "typecheck": "tsc --noEmit",
-    "lint": "biome check --diagnostic-level=error .",
+    "dev": "tsx watch src/index.ts",
     "format": "biome format --write .",
-    "test": "vitest run"
+    "lint": "biome check --diagnostic-level=error .",
+    "start": "node dist/index.js",
+    "test": "vitest run",
+    "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "@discordjs/voice": "^0.19.2",
@@ -29,13 +35,13 @@
     "zod": "^4.5.4"
   },
   "devDependencies": {
-    "@biomejs/biome": "latest",
+    "@biomejs/biome": "^2.5.12",
     "@types/express": "^5.0.6",
     "@types/node": "^26.4.1",
     "@types/pg": "^8.23.1",
     "@types/ws": "^8.18.1",
     "tsx": "^4.23.13",
     "typescript": "^7.0.2",
-    "vitest": "latest"
+    "vitest": "^5.0.0"
   }
 }