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/referral/bind/route.ts

@@ -68,7 +68,7 @@ export async function POST(request: NextRequest) {
     
     // 检查用户是否存在
     const users = await query(
-      'SELECT id, referred_by FROM users WHERE id = ? OR open_id = ?',
+      'SELECT id FROM users WHERE id = ? OR open_id = ?',
       [effectiveUserId, openId || effectiveUserId]
     ) as any[]
     
@@ -90,35 +90,28 @@ export async function POST(request: NextRequest) {
       ORDER BY binding_date DESC LIMIT 1
     `, [user.id]) as any[]
     
-    let action = 'new' // new=新绑定, renew=续期, takeover=抢夺
+    let action = 'new' // new=新绑定, renew=续期, switch=立即切换
     let oldReferrerId = null
     
     if (existingBindings.length > 0) {
       const existing = existingBindings[0]
-      const expiryDate = new Date(existing.expiry_date)
       
-      // 同一个推荐人 - 续期
+      // 同一个推荐人 - 续期（刷新30天）
       if (existing.referrer_id === referrer.id) {
         action = 'renew'
       } 
-      // 不同推荐人 - 检查是否可以抢夺
-      else if (expiryDate < now) {
-        // 已过期，可以被抢夺
-        action = 'takeover'
+      // 不同推荐人 - 立即切换（新逻辑：无条件切换）
+      else {
+        action = 'switch'
         oldReferrerId = existing.referrer_id
         
-        // 将旧绑定标记为过期
+        // 将旧绑定标记为 cancelled（被切换）
         await query(
-          "UPDATE referral_bindings SET status = 'expired' WHERE id = ?",
+          "UPDATE referral_bindings SET status = 'cancelled' WHERE id = ?",
           [existing.id]
         )
-      } else {
-        // 未过期，不能被抢夺
-        return NextResponse.json({
-          success: false,
-          error: '用户已绑定其他推荐人，绑定有效期内无法更换',
-          expiryDate: expiryDate.toISOString()
-        }, { status: 400 })
+        
+        console.log(`[Referral Bind] 立即切换: ${user.id}: ${oldReferrerId} -> ${referrer.id}`)
       }
     }
     
@@ -137,9 +130,9 @@ export async function POST(request: NextRequest) {
         WHERE referee_id = ? AND referrer_id = ? AND status = 'active'
       `, [expiryDate, user.id, referrer.id])
       
-      console.log(`[Referral Bind] 续期: ${user.id} -> ${referrer.id}`)
+      console.log(`[Referral Bind] 续期: ${user.id} -> ${referrer.id}，新过期时间: ${expiryDate.toISOString()}`)
     } else {
-      // 新绑定或抢夺
+      // 新绑定或切换
       await query(`
         INSERT INTO referral_bindings (
           id, referrer_id, referee_id, referral_code, status, expiry_date, binding_date
@@ -152,11 +145,7 @@ export async function POST(request: NextRequest) {
           status = 'active'
       `, [bindingId, referrer.id, user.id, referralCode, expiryDate])
       
-      // 更新用户的推荐人
-      await query(
-        'UPDATE users SET referred_by = ? WHERE id = ?',
-        [referrer.id, user.id]
-      )
+      // 注意：不再更新 users.referred_by（已弃用，只使用 referral_bindings）
       
       // 更新推荐人的推广数量（仅新绑定时）
       if (action === 'new') {
@@ -164,17 +153,22 @@ export async function POST(request: NextRequest) {
           'UPDATE users SET referral_count = referral_count + 1 WHERE id = ?',
           [referrer.id]
         )
+        console.log(`[Referral Bind] 新绑定: ${user.id} -> ${referrer.id}`)
       }
       
-      // 如果是抢夺，减少原推荐人的推广数量
-      if (action === 'takeover' && oldReferrerId) {
+      // 如果是立即切换，更新双方的推广数量
+      if (action === 'switch' && oldReferrerId) {
+        // 减少旧推荐人的数量
         await query(
           'UPDATE users SET referral_count = GREATEST(referral_count - 1, 0) WHERE id = ?',
           [oldReferrerId]
         )
-        console.log(`[Referral Bind] 抢夺: ${user.id}: ${oldReferrerId} -> ${referrer.id}`)
-      } else {
-        console.log(`[Referral Bind] 新绑定: ${user.id} -> ${referrer.id}`)
+        // 增加新推荐人的数量
+        await query(
+          'UPDATE users SET referral_count = referral_count + 1 WHERE id = ?',
+          [referrer.id]
+        )
+        console.log(`[Referral Bind] 立即切换完成: ${user.id}: ${oldReferrerId} -> ${referrer.id}`)
       }
     }
     
@@ -188,15 +182,23 @@ export async function POST(request: NextRequest) {
       // 访问日志表可能不存在，忽略错误
     }
     
+    const messages = {
+      new: '绑定成功',
+      renew: '绑定已续期',
+      switch: '已切换推荐人'
+    }
+    
     return NextResponse.json({
       success: true,
-      message: action === 'renew' ? '绑定已续期' : (action === 'takeover' ? '绑定已更新' : '绑定成功'),
+      message: messages[action] || '绑定成功',
       action,
       expiryDate: expiryDate.toISOString(),
+      bindingDays,
       referrer: {
         id: referrer.id,
         nickname: referrer.nickname
-      }
+      },
+      ...(oldReferrerId && { oldReferrerId })
     })
     
   } catch (error) {
@@ -238,9 +240,9 @@ export async function GET(request: NextRequest) {
     }
     
     if (userId) {
-      // 查询用户的推荐关系
+      // 查询用户是否存在
       const users = await query(
-        'SELECT id, referred_by FROM users WHERE id = ?',
+        'SELECT id FROM users WHERE id = ?',
         [userId]
       ) as any[]
       
@@ -251,25 +253,50 @@ export async function GET(request: NextRequest) {
         }, { status: 404 })
       }
       
-      const user = users[0]
-      
-      // 如果有推荐人，获取推荐人信息
+      // 从 referral_bindings 查询当前有效的推荐人
       let referrer = null
-      if (user.referred_by) {
-        const referrers = await query(
-          'SELECT id, nickname, avatar FROM users WHERE id = ?',
-          [user.referred_by]
-        ) as any[]
-        if (referrers.length > 0) {
-          referrer = referrers[0]
+      const activeBinding = await query(`
+        SELECT 
+          rb.referrer_id,
+          u.nickname,
+          u.avatar,
+          rb.expiry_date,
+          rb.purchase_count
+        FROM referral_bindings rb
+        JOIN users u ON rb.referrer_id = u.id
+        WHERE rb.referee_id = ? 
+          AND rb.status = 'active' 
+          AND rb.expiry_date > NOW()
+        ORDER BY rb.binding_date DESC
+        LIMIT 1
+      `, [userId]) as any[]
+      
+      if (activeBinding.length > 0) {
+        referrer = {
+          id: activeBinding[0].referrer_id,
+          nickname: activeBinding[0].nickname,
+          avatar: activeBinding[0].avatar,
+          expiryDate: activeBinding[0].expiry_date,
+          purchaseCount: activeBinding[0].purchase_count
         }
       }
       
-      // 获取该用户推荐的人
-      const referees = await query(
-        'SELECT id, nickname, avatar, created_at FROM users WHERE referred_by = ?',
-        [userId]
-      ) as any[]
+      // 获取该用户推荐的人（所有活跃绑定）
+      const referees = await query(`
+        SELECT 
+          u.id,
+          u.nickname,
+          u.avatar,
+          rb.binding_date as created_at,
+          rb.purchase_count,
+          rb.total_commission
+        FROM referral_bindings rb
+        JOIN users u ON rb.referee_id = u.id
+        WHERE rb.referrer_id = ? 
+          AND rb.status = 'active' 
+          AND rb.expiry_date > NOW()
+        ORDER BY rb.binding_date DESC
+      `, [userId]) as any[]
       
       return NextResponse.json({
         success: true,