#!/usr/bin/env node
/**
 * patch-r5-claudemd-doc.js · 2026-04-26
 *
 * R5: CLAUDE.md §上下文管理 追加 Agent 隔离软门控说明
 *
 * 幂等: sentinel "Agent 隔离软门控"
 */
'use strict';
const fs = require('fs');
const path = require('path');

const TARGET = path.join(__dirname, '..', '..', 'CLAUDE.md');
const SENTINEL = 'Agent 隔离软门控';

const ANCHOR = '- 重型任务（代码审计/系统自检）优先委托 Agent 子进程（隔离上下文）';
const NEW = '- 重型任务（代码审计/系统自检）优先委托 Agent 子进程（隔离上下文）— R5 **Agent 隔离软门控** 已自动检测 Bash 循环 (≥6 项)/seq/&&-链 (≥6) 与短期 Write/Edit 累计 (90s 内 ≥5 次), 触发时通过 systemMessage 提示改派 Agent';

function main() {
  const src = fs.readFileSync(TARGET, 'utf8');
  if (src.includes(SENTINEL)) {
    console.log('[r5-doc] already applied, skip');
    return;
  }
  if (!src.includes(ANCHOR)) {
    console.error('[r5-doc] anchor not found, manual review needed');
    process.exit(1);
  }
  const next = src.replace(ANCHOR, NEW);
  const bak = TARGET + '.bak.r5doc.' + Date.now();
  fs.copyFileSync(TARGET, bak);
  const tmp = TARGET + '.tmp.' + process.pid;
  fs.writeFileSync(tmp, next, 'utf8');
  fs.renameSync(tmp, TARGET);
  console.log('[r5-doc] OK, bak:', path.basename(bak));
}

main();