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

components/kiosk/ResourceAssignment.tsx

@@ -16,6 +16,9 @@ interface ResourceAssignmentProps {
   end_time: string
 }
 
+/**
+ * ResourceAssignment component that displays available resources for booking.
+ */
 export function ResourceAssignment({ resources, start_time, end_time }: ResourceAssignmentProps) {
   const formatDateTime = (dateTime: string) => {
     const date = new Date(dateTime)