Link guest by phone on booking create

src/main/kotlin/com/android/trisolarisserver/controller/BookingFlow.kt

@@ -77,8 +77,11 @@ class BookingFlow(
 
         val now = nowForProperty(property.timezone)
         val shouldCheckIn = !expectedCheckInAt.isBefore(now)
+        val phone = request.guestPhoneE164?.trim()?.takeIf { it.isNotBlank() }
+        val guest = resolveGuestForBooking(propertyId, property, actor, now, phone)
         val booking = com.android.trisolarisserver.models.booking.Booking(
             property = property,
+            primaryGuest = guest,
             status = if (shouldCheckIn) BookingStatus.CHECKED_IN else BookingStatus.OPEN,
             source = request.source?.trim().takeIf { !it.isNullOrBlank() } ?: "WALKIN",
             checkinAt = if (shouldCheckIn) expectedCheckInAt else null,
@@ -99,19 +102,10 @@ class BookingFlow(
         )
 
         val saved = bookingRepo.save(booking)
-        val guest = com.android.trisolarisserver.models.booking.Guest(
-            property = property,
-            createdBy = actor,
-            updatedAt = now
-        )
-        val savedGuest = guestRepo.save(guest)
-        saved.primaryGuest = savedGuest
-        saved.updatedAt = now
-        bookingRepo.save(saved)
         return BookingCreateResponse(
             id = saved.id!!,
             status = saved.status.name,
-            guestId = savedGuest.id,
+            guestId = guest.id,
             checkInAt = saved.checkinAt?.toString(),
             expectedCheckInAt = saved.expectedCheckinAt?.toString(),
             expectedCheckOutAt = saved.expectedCheckoutAt?.toString()
@@ -241,6 +235,28 @@ class BookingFlow(
         roomBoardEvents.emit(propertyId)
     }
 
+    private fun resolveGuestForBooking(
+        propertyId: UUID,
+        property: com.android.trisolarisserver.models.property.Property,
+        actor: com.android.trisolarisserver.models.property.AppUser?,
+        now: OffsetDateTime,
+        phone: String?
+    ): com.android.trisolarisserver.models.booking.Guest {
+        if (phone != null) {
+            val existing = guestRepo.findByPropertyIdAndPhoneE164(propertyId, phone)
+            if (existing != null) {
+                return existing
+            }
+        }
+        val guest = com.android.trisolarisserver.models.booking.Guest(
+            property = property,
+            phoneE164 = phone,
+            createdBy = actor,
+            updatedAt = now
+        )
+        return guestRepo.save(guest)
+    }
+
     @PostMapping("/{bookingId}/cancel")
     @ResponseStatus(HttpStatus.NO_CONTENT)
     @Transactional

src/main/kotlin/com/android/trisolarisserver/controller/dto/BookingDtos.kt

@@ -17,6 +17,7 @@ data class BookingCreateRequest(
     val source: String? = null,
     val expectedCheckInAt: String,
     val expectedCheckOutAt: String,
+    val guestPhoneE164: String? = null,
     val transportMode: String? = null,
     val adultCount: Int? = null,
     val totalGuestCount: Int? = null,