修改媒体权限逻辑：创建checkshot文件夹，只读取该文件夹中的图片

- 修改GalleryScreen.kt中的loadImagesFromGallery函数，添加WHERE条件只读取checkshot文件夹中的图片
- 修改MergeScreen.kt中的getLatestImages函数，添加WHERE条件只读取checkshot文件夹中的图片
- 修改ImageProcessor.kt中的saveToGallery函数，将图片保存到checkshot文件夹（之前是InspectionCamera）

app/src/main/java/com/inspection/camera/ui/gallery/GalleryScreen.kt

@@ -274,11 +274,15 @@ private suspend fun loadImagesFromGallery(context: android.content.Context): Lis
         val projection = arrayOf(MediaStore.Images.Media._ID)
         val sortOrder = "${MediaStore.Images.Media.DATE_ADDED} DESC"
 
+        // 只读取checkshot文件夹中的图片
+        val selection = "${MediaStore.Images.Media.RELATIVE_PATH} LIKE ?"
+        val selectionArgs = arrayOf("%/checkshot/%")
+
         context.contentResolver.query(
             MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
             projection,
-            null,
-            null,
+            selection,
+            selectionArgs,
             sortOrder
         )?.use { cursor ->
             val idColumn = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID)

app/src/main/java/com/inspection/camera/ui/merge/MergeScreen.kt

@@ -138,11 +138,15 @@ fun MergeScreen(
             val projection = arrayOf(MediaStore.Images.Media._ID)
             val sortOrder = "${MediaStore.Images.Media.DATE_ADDED} DESC"
 
+            // 只读取checkshot文件夹中的图片
+            val selection = "${MediaStore.Images.Media.RELATIVE_PATH} LIKE ?"
+            val selectionArgs = arrayOf("%/checkshot/%")
+
             context.contentResolver.query(
                 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                 projection,
-                null,
-                null,
+                selection,
+                selectionArgs,
                 sortOrder
             )?.use { cursor ->
                 val idColumn = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID)

app/src/main/java/com/inspection/camera/util/ImageProcessor.kt

@@ -545,7 +545,7 @@ object ImageProcessor {
             put(MediaStore.Images.Media.DISPLAY_NAME, fileName)
             put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg")
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-                put(MediaStore.Images.Media.RELATIVE_PATH, Environment.DIRECTORY_PICTURES + "/InspectionCamera")
+                put(MediaStore.Images.Media.RELATIVE_PATH, Environment.DIRECTORY_PICTURES + "/checkshot")
                 put(MediaStore.Images.Media.IS_PENDING, 1)
             }
         }