Add user authentication and admin roles to manage application access

Implement user login, session management, and role-based access control for users and administrators. Includes new admin pages for user management and SQL query execution.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/HPCBgsr

package.json

@@ -42,9 +42,11 @@
     "@radix-ui/react-toggle-group": "^1.1.3",
     "@radix-ui/react-tooltip": "^1.2.0",
     "@tanstack/react-query": "^5.60.5",
+    "@types/bcrypt": "^6.0.0",
     "@types/multer": "^2.0.0",
     "@types/node-cron": "^3.0.11",
     "@types/pg": "^8.15.5",
+    "bcrypt": "^6.0.0",
     "class-variance-authority": "^0.7.1",
     "cloudinary": "^2.7.0",
     "clsx": "^2.1.1",