Prune room images missing files on list

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

@@ -55,8 +55,26 @@ class RoomImages(
         @AuthenticationPrincipal principal: MyPrincipal?
     ): List<RoomImageResponse> {
         ensureRoom(propertyId, roomId)
-        return roomImageRepo.findByRoomIdOrdered(roomId)
-            .map { it.toResponse(publicBaseUrl) }
+        val images = roomImageRepo.findByRoomIdOrdered(roomId).toMutableList()
+        if (images.isEmpty()) return emptyList()
+        val missing = mutableListOf<RoomImage>()
+        val present = mutableListOf<RoomImage>()
+        for (img in images) {
+            val originalExists = Files.exists(Paths.get(img.originalPath))
+            if (!originalExists) {
+                missing.add(img)
+                try {
+                    Files.deleteIfExists(Paths.get(img.thumbnailPath))
+                } catch (_: Exception) {
+                }
+            } else {
+                present.add(img)
+            }
+        }
+        if (missing.isNotEmpty()) {
+            roomImageRepo.deleteAll(missing)
+        }
+        return present.map { it.toResponse(publicBaseUrl) }
     }
 
     @PostMapping