feat(db): Drizzle DAL with withUser/asAdmin GUC wrapper (Phase 2)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -15,11 +15,13 @@
     "@anthropic-ai/sdk": "^0.111.0",
     "@supabase/ssr": "^0.12.0",
     "@supabase/supabase-js": "^2.110.2",
+    "drizzle-orm": "^0.45.2",
     "file-type": "^22.0.1",
     "idb": "^8.0.3",
     "next": "^15.5.20",
     "openai": "^6.46.0",
     "pdf-lib": "^1.17.1",
+    "pg": "^8.22.0",
     "react": "^19.2.7",
     "react-dom": "^19.2.7",
     "resend": "^6.17.2"
@@ -29,10 +31,12 @@
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
     "@types/node": "^20",
+    "@types/pg": "^8.20.0",
     "@types/qrcode": "^1.5.6",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "@vitejs/plugin-react": "^6.0.3",
+    "drizzle-kit": "^0.31.10",
     "eslint": "^9",
     "eslint-config-next": "16.2.10",
     "jsdom": "^29.1.1",