docs: add comprehensive code comments, update README and TASKS, create training and troubleshooting guides

- Add JSDoc comments to API routes and business logic functions
- Update README.md with Phase 2 status and deployment/production notes
- Enhance TASKS.md with estimated timelines and dependencies
- Create docs/STAFF_TRAINING.md for team onboarding
- Create docs/CLIENT_ONBOARDING.md for customer experience
- Create docs/OPERATIONAL_PROCEDURES.md for daily operations
- Create docs/TROUBLESHOOTING.md for common setup issues
- Fix TypeScript errors in hq/page.tsx

app/booking/login/page.tsx

@@ -8,6 +8,7 @@ import { Label } from '@/components/ui/label'
 import { Mail, CheckCircle } from 'lucide-react'
 import { useAuth } from '@/lib/auth/context'
 
+/** @description Login page component for customer authentication using magic link emails. */
 export default function LoginPage() {
   const { signIn } = useAuth()
   const [email, setEmail] = useState('')