Initial commit: 91dj android client dev_1.0.0

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

analytics_sdk/lib/manager/event_persistence_web.dart

@@ -0,0 +1,35 @@
+import 'dart:collection';
+
+/// Web 平台事件持久化：内存 only，所有持久化操作为空实现。
+/// Web 会话通常短暂，不需要跨页面持久化事件。
+class EventPersistenceImpl {
+  Future<void> init() async {}
+
+  String? get debugReportEventLogFilePath => null;
+
+  void appendDebugReportEvent(Map<String, dynamic> event) {}
+
+  void bufferEvent(Map<String, dynamic> event) {}
+
+  void persistCriticalEvent(Map<String, dynamic> event) {}
+
+  Future<List<Map<String, dynamic>>> loadEvents({
+    required Queue<Map<String, dynamic>> queue,
+    required int maxQueueSize,
+    required int maxCacheLines,
+    required bool Function(String) isEventTypeEnabled,
+  }) async =>
+      const [];
+
+  Future<void> removeEvents(List<Map<String, dynamic>> events) async {}
+
+  Future<void> markInFlight(List<Map<String, dynamic>> events) async {}
+
+  Future<void> clearInFlight() async {}
+
+  Future<void> clearCache() async {}
+
+  void flushBuffer() {}
+
+  Future<void> flushBufferAsync() async {}
+}