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/cita/page.tsx

@@ -12,6 +12,7 @@ import { format } from 'date-fns'
 import { es } from 'date-fns/locale'
 import { useAuth } from '@/lib/auth/context'
 
+/** @description Booking confirmation and payment page component for completing appointment reservations. */
 export default function CitaPage() {
   const { user, loading: authLoading } = useAuth()
   const router = useRouter()