feat: switch panel database to sqlite

package.json

@@ -13,9 +13,10 @@
   "dependencies": {
     "@base-ui/react": "^1.4.1",
     "@marsidev/react-turnstile": "^1.5.0",
-    "@prisma/adapter-pg": "^7.7.0",
+    "@prisma/adapter-better-sqlite3": "^7.7.0",
     "@prisma/client": "^7.7.0",
     "bcryptjs": "^3.0.3",
+    "better-sqlite3": "^12.5.0",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "date-fns": "^4.1.0",
@@ -26,7 +27,6 @@
     "next-auth": "^4.24.14",
     "next-themes": "^0.4.6",
     "nodemailer": "^7.0.13",
-    "pg": "^8.20.0",
     "qrcode.react": "^4.2.0",
     "react": "19.2.4",
     "react-dom": "19.2.4",
@@ -41,6 +41,7 @@
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
+    "@types/better-sqlite3": "^7.6.13",
     "@types/node": "^20",
     "@types/nodemailer": "^8.0.0",
     "@types/react": "^19",