fix: allow email inbox setup from SMTP env without old mail config

.gitignore

@@ -13,3 +13,5 @@ var/
 
 # 子项目自带的 git 历史
 libredesk/.git/
+
+.agent-credentials

scripts/add-email-inbox.js

@@ -78,7 +78,17 @@ const data = (j) => (j && j.data !== undefined ? j.data : j);
 
 async function main() {
   const env = loadEnv(path.join(ROOT, '.env'));
-  const old = JSON.parse(fs.readFileSync(OLD_MAIL_CFG, 'utf8'));
+  const old = fs.existsSync(OLD_MAIL_CFG)
+    ? JSON.parse(fs.readFileSync(OLD_MAIL_CFG, 'utf8'))
+    : {
+        imap: { auth: { user: env.SMTP_USER, pass: env.SMTP_PASS } },
+        smtp: {
+          host: env.SMTP_HOST || 'smtp.163.com',
+          port: Number(env.SMTP_PORT || 465),
+          auth: { user: env.SMTP_USER, pass: env.SMTP_PASS },
+        },
+      };
+  if (!old.imap?.auth?.user || !old.imap?.auth?.pass) throw new Error('缺少 IMAP/SMTP 凭据（设置 SMTP_USER/SMTP_PASS 或提供旧 mail.config.json）');
   const base = (env.LIBREDESK_BASE_URL || 'http://localhost:9000').replace(/\/+$/, '');
   const c = createClient(base);
   await c.post('/api/v1/auth/login', { email: env.LIBREDESK_SYSTEM_EMAIL || 'System', password: env.LIBREDESK_SYSTEM_USER_PASSWORD });