Initial commit

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lib/tools_base/image/image_disk_cache.dart

@@ -0,0 +1,32 @@
+import 'dart:io';
+
+import 'package:path_provider/path_provider.dart';
+
+import '../debug_log.dart';
+
+//图片磁盘缓存目录（2025-07 ~ 2026-06 的版本经 loadAndDecrypt 往里存过原图，当前无写入方，保留统计和清理给老用户兜底）
+class ImageDiskCache {
+  static Future<String> findSavePath() async {
+    final directory = await getTemporaryDirectory();
+
+    String saveDir = '${directory.path}/cacheImage';
+    Directory root = Directory(saveDir);
+    if (!root.existsSync()) {
+      debugLog(saveDir);
+      await root.create();
+    }
+    return saveDir;
+  }
+
+  static Future<void> emptyCache() async {
+    try {
+      String saveDir = await findSavePath();
+      Directory root = Directory(saveDir);
+      if (root.existsSync()) {
+        await root.delete(recursive: true);
+      }
+    } catch (e) {
+      debugLog(e);
+    }
+  }
+}