feat(bookings): allow transferring bookings to another PIC

Add UI modal and button to reassign bookings to different contacts
Create API endpoint and repository method to handle PIC transfers

server/api/bookings/[id]/pic.patch.ts

@@ -0,0 +1,36 @@
+import type { TransferBookingPicResponse } from '~~/shared/booking'
+
+import { requireAuth } from '../../../utils/auth'
+import { updateBookingPersonInCharge } from '../../../utils/booking-repository'
+import { parseBookingPicTransferInput } from '../../../utils/bookings'
+import { getRequiredRouteParam, httpError } from '../../../utils/http'
+import { getPublicContactById } from '../../../utils/user-repository'
+
+export default defineEventHandler(async (event): Promise<TransferBookingPicResponse> => {
+  const auth = await requireAuth(event)
+  const bookingId = getRequiredRouteParam(event, 'id', 'Booking ID')
+  const body = await readBody<{
+    personInChargeId?: string | null
+  }>(event)
+
+  const input = parseBookingPicTransferInput(body)
+  const nextPersonInCharge = await getPublicContactById(input.personInChargeId)
+
+  if (!nextPersonInCharge) {
+    httpError(404, 'Selected person in charge is not available')
+  }
+
+  const booking = await updateBookingPersonInCharge({
+    bookingId,
+    nextPersonInChargeId: nextPersonInCharge.id,
+    currentPersonInChargeId: auth.user.role === 'super_admin' ? undefined : auth.user.id
+  })
+
+  if (!booking) {
+    httpError(404, 'Booking not found')
+  }
+
+  return {
+    booking
+  }
+})