diff --git a/README.md b/README.md
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+++ b/README.md
@@ -260,6 +260,7 @@ Build an attack chain for the latest engagement and export the node list with se
 
 ## Changelog (Recent)
 
+- 2025-12-08 – Optimized web frontend with enhanced sidebar navigation and improved user experience.
 - 2025-12-07 – Added FOFA network space search engine tool (fofa_search) with flexible query parameters and field configuration.
 - 2025-12-07 – Fixed positional parameter handling bug: ensure correct parameter position when using default values.
 - 2025-11-20 – Added automatic compression/summarization for oversized tool logs and MCP transcripts.
diff --git a/README_CN.md b/README_CN.md
index ffda83f7..23f212f6 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -258,6 +258,7 @@ CyberStrikeAI/
 
 ## Changelog（近期）
 
+- 2025-12-08 —— 优化 Web 前端界面，增加侧边栏导航，提升用户体验。
 - 2025-12-07 —— 新增 FOFA 网络空间搜索引擎工具（fofa_search），支持灵活的查询参数与字段配置。
 - 2025-12-07 —— 修复位置参数处理 bug：当工具参数使用默认值时，确保后续参数位置正确传递。
 - 2025-11-20 —— 支持超大日志/MCP 记录的自动压缩与摘要回写。