feat: migrate from PocketBase to PostgreSQL with Drizzle ORM

- Add @project-e/db package with Drizzle schema and migrations
- Replace PocketBase client with PostgreSQL-based database client
- Migrate auth from custom to NextAuth.js
- Add Docker Compose with PostgreSQL container
- Update worker to use new database client
- Remove PocketBase-specific files and migrations
- Add drizzle config and initial migration

worker/package.json

@@ -9,11 +9,14 @@
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
-    "pocketbase": "^0.25.0",
-    "@project-e/shared": "*"
+    "@project-e/db": "^0.1.0",
+    "@project-e/shared": "*",
+    "drizzle-orm": "^0.45.2",
+    "postgres": "^3.4.9",
+    "tsx": "^4.23.1"
   },
   "devDependencies": {
-    "typescript": "^5.9.3",
-    "@types/node": "^22.19.0"
+    "@types/node": "^22.19.0",
+    "typescript": "^5.9.3"
   }
 }