diff --git a/.claude/hooks/stop-guard.sh b/.claude/hooks/stop-guard.sh
new file mode 100755
index 00000000..6db2e014
--- /dev/null
+++ b/.claude/hooks/stop-guard.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+# 智能 Stop hook：仅 src/ 有未提交改动时提醒门禁
+cd "$(dirname "$0")/../.." 2>/dev/null || true
+
+count=$( (git diff --name-only HEAD; git diff --cached --name-only) 2>/dev/null | grep -c '^src/')
+
+if [ "${count:-0}" = "0" ]; then
+  echo '{"continue": true}'
+else
+  echo "{\"continue\": true, \"hookSpecificOutput\": {\"hookEventName\": \"Stop\", \"additionalContext\": \"## ${count} 个源文件未提交\\n\\n快门禁通过？\"}}"
+fi
diff --git a/.claude/settings.json b/.claude/settings.json
index f93334d4..c6f00da4 100644
--- a/.claude/settings.json
+++ b/.claude/settings.json
@@ -45,9 +45,9 @@
         "matcher": "",
         "hooks": [
           {
-            "type": "prompt",
-            "prompt": "在结束本次会话之前，请确认以下事项：\n1. 快门禁是否通过？（./2026test.sh -c functional -x && ./2026test.sh -c h_functional -x）\n2. 指令数是否有退化？（如有优化改动，跑 ./count_asm.sh）\n3. 本次有效的优化是否已记录到 优化记录.md？\n4. 是否有未提交的改动需要处理？\n5. 如有重要经验教训，是否已写入 memory？\n\n请简要回答每个问题（是/否/不适用），然后正常结束。",
-            "timeout": 15000
+            "type": "command",
+            "command": "bash .claude/hooks/stop-guard.sh",
+            "timeout": 3000
           }
         ]
       }