更新服务器信息为新的 IP 地址，调整相关文档和代码中的默认配置，确保部署和连接的一致性。同时，优化订单管理界面，增强商品信息的格式化逻辑，提升用户体验。

app/api/db/users/route.ts

@@ -128,13 +128,13 @@ export async function POST(request: NextRequest) {
     const userId = generateUserId()
     const referralCode = generateReferralCode(openId || phone || userId)
 
-    // 创建用户
+    // 创建用户（注意：不再使用 referred_by 字段）
     await query(`
       INSERT INTO users (
         id, open_id, phone, nickname, password, wechat_id, avatar,
-        referral_code, referred_by, has_full_book, is_admin,
+        referral_code, has_full_book, is_admin,
         earnings, pending_earnings, referral_count
-      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, FALSE, ?, 0, 0, 0)
+      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, FALSE, ?, 0, 0, 0)
     `, [
       userId,
       openId || null,
@@ -144,7 +144,6 @@ export async function POST(request: NextRequest) {
       wechatId || null,
       avatar || null,
       referralCode,
-      referredBy || null,
       is_admin || false
     ])