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/api/kiosk/bookings/route.ts

@@ -18,6 +18,9 @@ async function validateKiosk(request: NextRequest) {
   return kiosk
 }
 
+/**
+ * @description Retrieves pending/confirmed bookings for kiosk
+ */
 export async function GET(request: NextRequest) {
   try {
     const kiosk = await validateKiosk(request)
@@ -72,6 +75,9 @@ export async function GET(request: NextRequest) {
   }
 }
 
+/**
+ * @description Creates a new booking for kiosk
+ */
 export async function POST(request: NextRequest) {
   try {
     const kiosk = await validateKiosk(request)