feat: 拼图功能增加自动导入最后N张照片功能

- 选择2x2模式时显示「自动导入最后4张照片」提示
- 选择3x3模式时显示「自动导入最后9张照片」提示
- 点击提示文字后自动从相册导入对应数量的最新照片

app/build/intermediates/incremental/packageDebug/tmp/debug/dex-renamer-state.txt

@@ -1,4 +1,4 @@
-#Sat Mar 07 00:02:01 CST 2026
+#Wed Mar 11 19:27:43 CST 2026
 path.4=14/classes.dex
 path.3=12/classes.dex
 path.2=10/classes.dex

app/build/kotlin/compileDebugKotlin/cacheable/caches-jvm/inputs/source-to-output.tab.values.s

@@ -1 +1 @@
-τ8ξ)ϊ*ψ'ί&θ%ή!ψω#ϋ#η#η#η#η#η#α#
+τ8ξ)ϊ*ψ'ί&θ%ή!ψω#ϋ#η#η#η#η#η#α#α#

app/build/kotlin/compileDebugKotlin/cacheable/caches-jvm/lookups/counters.tab

@@ -1,2 +1,2 @@
-47
+48
 0

app/build/kotlin/compileDebugKotlin/cacheable/caches-jvm/lookups/lookups.tab.values.s

@@ -1 +1 @@
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+ëXè¾
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app/src/main/java/com/inspection/camera/ui/merge/MergeScreen.kt

@@ -2,6 +2,7 @@ package com.inspection.camera.ui.merge
 
 import android.graphics.Bitmap
 import android.net.Uri
+import android.provider.MediaStore
 // java.io.File and FileOutputStream will be referenced with fully qualified names to avoid ambiguity
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
@@ -126,6 +127,52 @@ fun MergeScreen(
         }
     }
 
+    // 获取相册中最后N张照片
+    suspend fun getLatestImages(count: Int): List<Uri> {
+        return withContext(Dispatchers.IO) {
+            val images = mutableListOf<Uri>()
+            val projection = arrayOf(MediaStore.Images.Media._ID)
+            val sortOrder = "${MediaStore.Images.Media.DATE_ADDED} DESC"
+
+            context.contentResolver.query(
+                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
+                projection,
+                null,
+                null,
+                sortOrder
+            )?.use { cursor ->
+                val idColumn = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID)
+                var loadedCount = 0
+                while (cursor.moveToNext() && loadedCount < count) {
+                    val id = cursor.getLong(idColumn)
+                    val uri = Uri.withAppendedPath(
+                        MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
+                        id.toString()
+                    )
+                    images.add(uri)
+                    loadedCount++
+                }
+            }
+            images
+        }
+    }
+
+    // 自动导入最后N张照片
+    fun autoImportLatestImages(count: Int) {
+        scope.launch {
+            val latestUris = getLatestImages(count)
+            if (latestUris.isNotEmpty()) {
+                images.clear()
+                latestUris.forEach { uri ->
+                    val path = copyImageToCache(uri)
+                    if (path != null) {
+                        images.add(ImageWithCache(uri, path))
+                    }
+                }
+            }
+        }
+    }
+
     // 图片选择器
     val imagePickerLauncher = rememberLauncherForActivityResult(
         contract = ActivityResultContracts.GetMultipleContents()
@@ -242,6 +289,25 @@ fun MergeScreen(
                     }
                 }
 
+                // 自动导入提示
+                val autoImportText = when (layoutType) {
+                    MergeLayoutType.Grid2x2 -> "自动导入最后4张照片"
+                    MergeLayoutType.Grid3x3 -> "自动导入最后9张照片"
+                }
+                Text(
+                    text = autoImportText,
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = Primary,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp)
+                        .clickable { 
+                            autoImportLatestImages(layoutType.maxImages)
+                        }
+                )
+
+                Spacer(modifier = Modifier.height(8.dp))
+
                 // 质量选择
                 Row(
                     modifier = Modifier