const fs = require('fs');
const file = 'd:/workspace/code/fms/demo.html';
const panelFile = 'd:/workspace/code/fms/.tmp-panel.html';
const lines = fs.readFileSync(file, 'utf8').split('\n');
const panel = fs.readFileSync(panelFile, 'utf8').replace(/\n$/, '').split('\n');

// 替换第 108..211 行（1-based）为新的权限面板；保留第 212 行的 </div>
const before = lines.slice(0, 107);
const after = lines.slice(211);
console.log('第108行原内容:', JSON.stringify(lines[107]));
console.log('第211行原内容:', JSON.stringify(lines[210]));
console.log('第212行原内容:', JSON.stringify(lines[211]));
fs.writeFileSync(file, before.concat(panel).concat(after).join('\n'), 'utf8');
console.log('done, total lines:', before.length + panel.length + after.length);