feat(auth): implement better authentication system with user sessions and password management

- Added user, session, account, and verification models to Prisma schema.
- Integrated better-auth for user authentication with email and password.
- Created auth middleware for session validation.
- Implemented auth context and client in frontend for managing user sessions.
- Added login and settings pages for user authentication and password management.
- Updated routes to include authentication checks and user-specific content.
- Enhanced UI components to reflect authentication state.

package.json

@@ -2,7 +2,7 @@
   "name": "personal-admin",
   "private": true,
   "scripts": {
-    "dev": "concurrently -n backend,frontend -c blue,green \"bun run --cwd apps/backend dev\" \"bun run --cwd apps/frontend dev\"",
+    "dev": "conc -n backend,frontend -c blue,green \"bun run --cwd apps/backend dev\" \"bun run --cwd apps/frontend dev\"",
     "build": "bun run --cwd apps/frontend build"
   },
   "workspaces": [
@@ -11,5 +11,8 @@
   ],
   "devDependencies": {
     "concurrently": "^9.1.0"
+  },
+  "dependencies": {
+    "@noble/ciphers": "^2.2.0"
   }
 }