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/availability/blocks/route.ts

@@ -17,6 +17,9 @@ async function validateAdmin(request: NextRequest) {
   return true
 }
 
+/**
+ * @description Creates a booking block for a resource
+ */
 export async function POST(request: NextRequest) {
   try {
     const isAdmin = await validateAdmin(request)
@@ -76,6 +79,9 @@ export async function POST(request: NextRequest) {
   }
 }
 
+/**
+ * @description Retrieves booking blocks with filters
+ */
 export async function GET(request: NextRequest) {
   try {
     const isAdmin = await validateAdmin(request)
@@ -151,6 +157,9 @@ export async function GET(request: NextRequest) {
   }
 }
 
+/**
+ * @description Deletes a booking block by ID
+ */
 export async function DELETE(request: NextRequest) {
   try {
     const isAdmin = await validateAdmin(request)

app/api/availability/staff-unavailable/route.ts

@@ -17,6 +17,9 @@ async function validateAdminOrStaff(request: NextRequest) {
   return true
 }
 
+/**
+ * @description Marks staff as unavailable for a time period
+ */
 export async function POST(request: NextRequest) {
   try {
     const hasAccess = await validateAdminOrStaff(request)
@@ -119,6 +122,9 @@ export async function POST(request: NextRequest) {
   }
 }
 
+/**
+ * @description Retrieves staff unavailability records
+ */
 export async function GET(request: NextRequest) {
   try {
     const hasAccess = await validateAdminOrStaff(request)

app/api/availability/staff/route.ts

@@ -1,6 +1,9 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { supabaseAdmin } from '@/lib/supabase/client'
 
+/**
+ * @description Retrieves available staff for a time range
+ */
 export async function GET(request: NextRequest) {
   try {
     const { searchParams } = new URL(request.url)

app/api/availability/time-slots/route.ts

@@ -1,6 +1,9 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { supabaseAdmin } from '@/lib/supabase/client'
 
+/**
+ * @description Retrieves detailed availability time slots for a date
+ */
 export async function GET(request: NextRequest) {
   try {
     const { searchParams } = new URL(request.url)