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const path = require('path');
/**
* 聊天日志 JSON 路径：环境变量 CHAT_LOG_PATH（绝对路径或相对项目根），未设置则为 <root>/chat_logs.json
*/
function resolveChatLogPath(rootDir) {
const raw = process.env.CHAT_LOG_PATH;
if (raw == null || !String(raw).trim()) {
return path.join(rootDir, 'chat_logs.json');
}
const p = String(raw).trim();
return path.isAbsolute(p) ? p : path.join(rootDir, p);
module.exports = { resolveChatLogPath };
