From da5d6182972bf276c6dd0094b90edc24b6113921 Mon Sep 17 00:00:00 2001
From: lzkk <956449176@qq.com>
Date: Tue, 26 May 2026 00:29:01 +0800
Subject: [PATCH] =?UTF-8?q?fix(hooks):=20memory-guard=20=E8=BE=93=E5=87=BA?=
 =?UTF-8?q?=E5=90=88=E6=B3=95=20JSON=EF=BC=8C=E4=BF=AE=E5=A4=8D=E4=BC=9A?=
 =?UTF-8?q?=E8=AF=9D=E5=B4=A9=E6=BA=83?=
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SessionStart hook 要求 stdout 输出 JSON，但旧版 memory-guard.sh 只写
stderr，stdout 为空，导致 Claude Code hook runner JSON 解析异常后崩溃。
改为输出 {"continue": true} 并将警告注入 additionalContext。
---
 .claude/hooks/memory-guard.sh | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100755 .claude/hooks/memory-guard.sh

diff --git a/.claude/hooks/memory-guard.sh b/.claude/hooks/memory-guard.sh
new file mode 100755
index 00000000..ebf3f4a4
--- /dev/null
+++ b/.claude/hooks/memory-guard.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# 会话启动时的内存/进程守卫
+# 1. 检查可用内存，低于 2GB 时警告
+# 2. 检查是否有多个 claude 会话在运行
+# 输出 JSON 到 stdout，警告通过 additionalContext 注入
+
+AVAILABLE_MB=$(awk '/^MemAvailable:/ {print int($2/1024)}' /proc/meminfo 2>/dev/null || echo "0")
+CLAUDE_COUNT=$(pgrep -c -f "claude.*permission-mode" 2>/dev/null || echo "0")
+
+WARNINGS=""
+
+if [[ "$AVAILABLE_MB" -gt 0 && "$AVAILABLE_MB" -lt 2048 ]]; then
+  WARNINGS="${WARNINGS}- ⚠ 可用内存仅 ${AVAILABLE_MB}MB，建议关闭其他应用后再操作\n"
+fi
+
+if [[ "$CLAUDE_COUNT" -gt 2 ]]; then
+  WARNINGS="${WARNINGS}- ⚠ 检测到 ${CLAUDE_COUNT} 个 claude 会话在运行，多会话可能导致 OOM\n"
+fi
+
+if [[ -n "$WARNINGS" ]]; then
+  cat << EOF
+{
+  "continue": true,
+  "hookSpecificOutput": {
+    "hookEventName": "SessionStart",
+    "additionalContext": "## ⚠ 资源警告\n\n${WARNINGS}"
+  }
+}
+EOF
+else
+  echo '{"continue": true}'
+fi