fix: Move drizzle-kit to dependencies for production use

drizzle.config.js imports from drizzle-kit, so it must be
installed in production for db:push to work on Coolify.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package.json

@@ -7,9 +7,9 @@
     "dev": "nodemon src/index.js",
     "start": "node src/index.js",
     "test": "node --experimental-vm-modules node_modules/.bin/jest",
-    "db:generate": "npx drizzle-kit generate",
-    "db:push": "npx drizzle-kit push",
-    "db:studio": "npx drizzle-kit studio",
+    "db:generate": "drizzle-kit generate",
+    "db:push": "drizzle-kit push",
+    "db:studio": "drizzle-kit studio",
     "db:seed": "node src/db/seeds/admin.seed.js",
     "db:seed:testuser": "node src/db/seeds/testuser.seed.js"
   },
@@ -36,13 +36,13 @@
     "uuid": "^13.0.0",
     "web-push": "^3.6.7",
     "xss-clean": "^0.1.4",
-    "zod": "^4.1.12"
+    "zod": "^4.1.12",
+    "drizzle-kit": "^0.31.7"
   },
   "devDependencies": {
     "@types/bcryptjs": "^2.4.6",
     "@types/jsonwebtoken": "^9.0.10",
     "@types/pg": "^8.15.6",
-    "drizzle-kit": "^0.31.7",
     "eslint": "latest",
     "jest": "^29.7.0",
     "nodemon": "^3.1.7",