feat: add reviewed postgres migration foundation

frontend/package.json

@@ -7,8 +7,10 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "test": "tsx --test tests/*.test.ts",
+    "test": "tsx --test --test-concurrency=1 tests/*.test.ts",
     "test:db": "tsx --test --test-concurrency=1 tests/database-*.test.ts",
+    "db:migrate": "node scripts/db-migrate.mjs",
+    "db:migrate:check": "node scripts/db-migrate.mjs --check",
     "lint": "eslint",
     "data:china": "node scripts/pull-china-locations.mjs"
   },
@@ -21,8 +23,10 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "date-fns": "^4.4.0",
+    "drizzle-orm": "^0.45.2",
     "lucide-react": "^1.24.0",
     "next": "16.2.10",
+    "pg": "^8.22.0",
     "react": "19.2.4",
     "react-day-picker": "^10.0.1",
     "react-dom": "19.2.4",
@@ -35,6 +39,7 @@
   },
   "devDependencies": {
     "@types/node": "^20",
+    "@types/pg": "^8.20.0",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "eslint": "^9",