Add ordered categories for room images

src/main/kotlin/com/android/trisolarisserver/repo/RoomImageRepo.kt

@@ -1,10 +1,20 @@
 package com.android.trisolarisserver.repo
 
 import com.android.trisolarisserver.models.room.RoomImage
+import org.springframework.data.jpa.repository.Query
+import org.springframework.data.repository.query.Param
 import org.springframework.data.jpa.repository.JpaRepository
 import java.util.UUID
 
 interface RoomImageRepo : JpaRepository<RoomImage, UUID> {
-    fun findByRoomIdOrderByCreatedAtDesc(roomId: UUID): List<RoomImage>
+    @Query(
+        """
+        select ri
+        from RoomImage ri
+        where ri.room.id = :roomId
+        order by (ri.sortOrder is null), ri.sortOrder asc, ri.createdAt desc
+        """
+    )
+    fun findByRoomIdOrdered(@Param("roomId") roomId: UUID): List<RoomImage>
     fun findByIdAndRoomIdAndPropertyId(id: UUID, roomId: UUID, propertyId: UUID): RoomImage?
 }