Harden server state and config persistence

src/server/subscription.js

@@ -2,6 +2,7 @@ import crypto from 'node:crypto';
 import fs from 'node:fs';
 import { settings } from './config.js';
 import { HarborError } from '../shared/errors.js';
+import { atomicWriteFile } from './services/stateStore.js';
 
 const PROXY_TYPES = new Set(['vless', 'vmess', 'trojan', 'shadowsocks', 'hysteria2']);
 
@@ -11,7 +12,7 @@ export function getHwid() {
     return fs.readFileSync(settings.hwidPath, 'utf8').trim();
   }
   const hwid = crypto.randomBytes(8).toString('hex');
-  fs.writeFileSync(settings.hwidPath, hwid, 'utf8');
+  atomicWriteFile(settings.hwidPath, hwid);
   return hwid;
 }