fix: 修复定时群总结时avatar_getter参数名错误导致图片渲染失败

src/infrastructure/reporting/dispatcher.py

@@ -68,7 +68,7 @@ class ReportDispatcher:
         html_content = None
         try:
             # 定义头像获取回调，请求小尺寸头像以优化性能
-            async def avatar_getter(user_id: str):
+            async def avatar_url_getter(user_id: str):
                 if not platform_id:
                     return None
                 adapter = self.message_sender.bot_manager.get_adapter(platform_id)
@@ -80,7 +80,7 @@ class ReportDispatcher:
                 analysis_result,
                 group_id,
                 self._html_render_func,
-                avatar_getter=avatar_getter,
+                avatar_url_getter=avatar_url_getter,
             )
         except Exception as e:
             logger.error(f"[{trace_id}] Failed to generate image report: {e}")