diff --git a/build.ts b/build.ts
index 5a2ad896e..4c3717d65 100644
--- a/build.ts
+++ b/build.ts
@@ -48,7 +48,7 @@ const DEFAULT_BUILD_FEATURES = [
   // PR-package restored features
   'WORKFLOW_SCRIPTS',
   'HISTORY_SNIP',
-  'CONTEXT_COLLAPSE',
+  // 'CONTEXT_COLLAPSE', // 已禁用：实现是空壳 stub，启用后会抑制 auto compact 导致上下文管理完全失效
   'MONITOR_TOOL',
   'FORK_SUBAGENT',
 //   'UDS_INBOX',