feat(bookings): implement ticket receipts and seat sharing system

Add receipt tokens and booking_seats table to track individual tickets
Create receipt and seat view pages with QR code generation

server/api/public/receipts/[token].get.ts

@@ -0,0 +1,23 @@
+import type { PublicBookingReceipt } from '~~/shared/booking'
+
+import { getBookingReceiptByReceiptToken } from '../../../utils/booking-repository'
+import { buildAppUrl } from '../../../utils/app-url'
+import { getRequiredRouteParam, httpError } from '../../../utils/http'
+
+export default defineEventHandler(async (event): Promise<PublicBookingReceipt> => {
+  const token = getRequiredRouteParam(event, 'token', 'Receipt token')
+  const receipt = await getBookingReceiptByReceiptToken(token)
+
+  if (!receipt) {
+    httpError(404, 'Receipt not found')
+  }
+
+  return {
+    booking: receipt.booking,
+    receiptUrl: buildAppUrl(event, `/receipt/${receipt.booking.receiptToken}`),
+    seats: receipt.seats.map((seat) => ({
+      ...seat,
+      seatUrl: buildAppUrl(event, `/seat/${seat.seatToken}`)
+    }))
+  }
+})

server/api/public/receipts/[token]/seats/[seatId].patch.ts

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+import type { PublicBookingSeatWithUrl } from '~~/shared/booking'
+
+import { updateBookingSeatShareByReceiptToken } from '../../../../../utils/booking-repository'
+import { parseSeatShareInput } from '../../../../../utils/bookings'
+import { buildAppUrl } from '../../../../../utils/app-url'
+import { getRequiredRouteParam, httpError } from '../../../../../utils/http'
+
+export default defineEventHandler(async (event): Promise<{ seat: PublicBookingSeatWithUrl }> => {
+  const token = getRequiredRouteParam(event, 'token', 'Receipt token')
+  const seatId = getRequiredRouteParam(event, 'seatId', 'Seat')
+  const body = await readBody<{
+    shared?: boolean
+    recipientName?: string | null
+    recipientPhone?: string | null
+  }>(event)
+
+  const input = parseSeatShareInput(body)
+  const seat = await updateBookingSeatShareByReceiptToken({
+    receiptToken: token,
+    seatId,
+    ...input
+  })
+
+  if (!seat) {
+    httpError(404, 'Seat not found')
+  }
+
+  return {
+    seat: {
+      ...seat,
+      seatUrl: buildAppUrl(event, `/seat/${seat.seatToken}`)
+    }
+  }
+})

server/api/public/seats/[token].get.ts

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+import type { PublicSeatReceipt } from '~~/shared/booking'
+
+import { getSeatReceiptBySeatToken } from '../../../utils/booking-repository'
+import { buildAppUrl } from '../../../utils/app-url'
+import { getRequiredRouteParam, httpError } from '../../../utils/http'
+
+export default defineEventHandler(async (event): Promise<PublicSeatReceipt> => {
+  const token = getRequiredRouteParam(event, 'token', 'Seat token')
+  const receipt = await getSeatReceiptBySeatToken(token)
+
+  if (!receipt) {
+    httpError(404, 'Seat ticket not found')
+  }
+
+  return {
+    booking: receipt.booking,
+    receiptUrl: buildAppUrl(event, `/receipt/${receipt.booking.receiptToken}`),
+    seat: {
+      ...receipt.seat,
+      seatUrl: buildAppUrl(event, `/seat/${receipt.seat.seatToken}`)
+    }
+  }
+})