update CHANGELOG.md

Signed-off-by: 82Flex <82flex@gmail.com>

Author: Lessica

CHANGELOG.md

@@ -1,5 +1,27 @@
 # Changelog
 
+## 4.3 Build 246 (2026-04-16)
+
+修复二次注入时可能误选已注入动态库作为目标 Mach-O 的问题。
+
+### 修复
+
+- 注入目标选取：修复追加注入时，上次注入的动态库可能被误选为注入目标的问题。  
+  新增三层防御：从注入前备份读取原始 Load Commands 以还原真实依赖链；枚举阶段跳过 `.troll-fools.bak` 备份文件；通过备份差分精确识别并排除已注入的动态库。
+
+------
+
+## 4.3 Build 246 (2026-04-16) [EN]
+
+Fixed an issue where re-injection could incorrectly select a previously-injected dylib as the target Mach-O.
+
+### Fixed
+
+- Target selection: Fixed re-injection potentially picking a previously-injected dylib as the injection target.  
+  Added three-layer defense: read original load commands from pre-injection backup to restore the true dependency chain; skip `.troll-fools.bak` backup files during enumeration; use backup-diff to precisely identify and exclude previously-injected dylibs.
+
+------
+
 ## 4.3 (2026-04-13)
 
 本次版本聚焦于“动态加载框架兼容性”和“页面说明可理解性”，并包含插件管理流程调整与资源清理。