我的页面：次数并入会员卡、兑换 CDK 统一、邀请积分并入推广板块

1. 可执行次数并入会员卡那一行
   - 普通用户：显示「可执行次数 N」，右侧按钮「兑换 CDK」
   - VIP 用户：仍显示「VIP 会员 + 有效期/剩余天数」，
     下方额外显示「可执行次数 不限」

2. 兑换入口统一
   - 原「开通 VIP / 续费」按钮改为「兑换 CDK」，既能兑 VIP 也能兑次数
   - 后端本就是同一接口：handleRedeem 依据响应 data.type
     （'vip' / 次数）分别处理，故后端无需改动
   - 兑换弹窗标题/标签统一为「兑换 CDK」「CDK 兑换码」，
     移除 redeemKind 状态（已无分支）

3. 删除下方数据三宫格
   - 不再单独显示「可执行次数」格子（已并入会员卡）
   - 删除「已邀请 N 位同学」格子

4. 邀请积分并入推广板块
   - 在邀请卡内展示「邀请积分 N」+「免费换次数」按钮
   - 原「换次数」文案改为「免费换次数」
   - 积分不足时按钮禁用并显示「满 1 可换」
   - 兑换弹窗内的引导文案同步指向新位置

顺带清理：移除随三宫格一起不再使用的 Users 图标导入。

npm run build 与 vue-tsc 均通过。

frondend/src/views/profile/ProfileView.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { ref, computed, onMounted } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
-import { LogOut, RefreshCw, Gift, X, Dices, TriangleAlert, SunMoon, Sun, Moon, Crown, Copy, ChevronRight, Smartphone, Users, Coins, UserPlus, GraduationCap, Headset, ShoppingCart, Flame } from 'lucide-vue-next'
+import { LogOut, RefreshCw, Gift, X, Dices, TriangleAlert, SunMoon, Sun, Moon, Crown, Copy, ChevronRight, Smartphone, Coins, UserPlus, GraduationCap, Headset, ShoppingCart, Flame } from 'lucide-vue-next'
 import { themeMode, setThemeMode, type ThemeMode } from '@/composables/useTheme'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
@@ -80,7 +80,6 @@ const redeemCodeText = ref('')
 const redeeming = ref(false)
 const redeemError = ref('')
 // 弹窗打开来源：count=兑换次数 / vip=开通或续费VIP（仅影响标题文案）
-const redeemKind = ref<'count' | 'vip'>('count')
 // VIP 信息
 const isVip = ref(false)
 const vipExpireAt = ref('')
@@ -271,8 +270,7 @@ async function confirmRandomBind() {
 }
 
 // ---- 兑换弹窗 ----
-function openRedeemModal(kind: 'count' | 'vip' = 'count') {
-  redeemKind.value = kind
+function openRedeemModal() {
   showRedeemModal.value = true
   redeemCodeText.value = ''
   redeemError.value = ''
@@ -465,13 +463,19 @@ async function handleRedeemInvite() {
               <template v-if="isVip">{{ vipExpireShort ? `有效期至 ${vipExpireShort}` : '会员生效中' }}<template v-if="vipDaysLeft !== null"> · 剩 {{ vipDaysLeft }} 天</template></template>
               <template v-else>开通后执行任务不限次数</template>
             </p>
+            <!-- 可执行次数：普通用户与 VIP 都显示（VIP 为不限次数时显示「不限」） -->
+            <p class="member-sub text-xs mt-1 flex items-center gap-1">
+              <span class="opacity-75">可执行次数</span>
+              <span class="font-bold tabular-nums">{{ isVip ? '不限' : fmtCount(userInfo?.signCount ?? 0) }}</span>
+            </p>
           </div>
+          <!-- 统一为「兑换 CDK」：既能兑 VIP 也能兑次数，由 CDK 类型自动判断 -->
           <button
             data-guide="profile-vip-btn"
             class="vip-btn press flex-shrink-0 text-sm font-semibold px-4 py-2 rounded-full shadow-md"
-            @click="openRedeemModal('vip')"
+            @click="openRedeemModal()"
           >
-            {{ isVip ? '续费' : '开通 VIP' }}
+            兑换 CDK
           </button>
         </div>
       </div>
@@ -503,33 +507,6 @@ async function handleRedeemInvite() {
         </span>
       </button>
 
-      <!-- ======== 数据三宫格：可执行次数 / 邀请积分 / 已邀请 ======== -->
-      <div class="grid grid-cols-3 gap-2.5 rise-in" style="animation-delay: 120ms">
-        <button class="press stat-cell bg-white rounded-2xl border border-gray-100/80 shadow-sm py-3 text-center" @click="openRedeemModal('count')">
-          <p class="text-xl font-bold tabular-nums text-gray-900 leading-tight">{{ isVip ? '∞' : fmtCount(userInfo?.signCount ?? 0) }}</p>
-          <p class="text-xs text-gray-500 mt-0.5">{{ isVip ? '不限次数' : '可执行次数' }}</p>
-          <p class="mt-1.5 inline-flex items-center gap-0.5 text-xs font-semibold text-brand-600"><Gift class="w-3 h-3" />兑换</p>
-        </button>
-        <button
-          data-guide="profile-invite-redeem"
-          class="press stat-cell bg-white rounded-2xl border border-gray-100/80 shadow-sm py-3 text-center disabled:active:scale-100"
-          :disabled="redeemingInvite"
-          @click="onRedeemInviteTap"
-        >
-          <p class="text-xl font-bold tabular-nums text-gray-900 leading-tight">{{ fmtReward(inviteReward) }}</p>
-          <p class="text-xs text-gray-500 mt-0.5">邀请积分</p>
-          <p class="mt-1.5 inline-flex items-center gap-0.5 text-xs font-semibold" :class="canRedeem ? 'text-amber-600' : 'text-gray-400'">
-            <RefreshCw v-if="redeemingInvite" class="w-3 h-3 animate-spin" />
-            <template v-else><Coins class="w-3 h-3" />{{ canRedeem ? '换次数' : '满 1 可换' }}</template>
-          </p>
-        </button>
-        <div class="stat-cell bg-white rounded-2xl border border-gray-100/80 shadow-sm py-3 text-center">
-          <p class="text-xl font-bold tabular-nums text-gray-900 leading-tight">{{ invitedCount }}</p>
-          <p class="text-xs text-gray-500 mt-0.5">已邀请</p>
-          <p class="mt-1.5 inline-flex items-center gap-0.5 text-xs font-medium text-gray-400"><Users class="w-3 h-3" />位同学</p>
-        </div>
-      </div>
-
       <!-- ======== 邀请好友卡 ======== -->
       <div data-guide="profile-invite-row" class="invite-card relative overflow-hidden hero-clip rounded-3xl p-4 rise-in" style="animation-delay: 160ms">
         <div class="pointer-events-none absolute -right-6 -bottom-10 w-32 h-32 rounded-full invite-glow" />
@@ -541,6 +518,22 @@ async function handleRedeemInvite() {
               <span class="font-semibold text-purple-600">{{ inviterRewardPerInvite !== null ? fmtReward(inviterRewardPerInvite) : '一定' }}</span>
               积分<template v-if="inviteeRewardPerInvite !== null">，TA 得 <span class="font-semibold text-purple-600">{{ fmtReward(inviteeRewardPerInvite) }}</span> 积分</template>
             </p>
+            <!-- 邀请积分（原三宫格内容并入推广板块）：积分 + 免费换次数 -->
+            <div class="flex items-center gap-2 mt-2">
+              <span class="text-xs text-gray-400">邀请积分</span>
+              <span class="text-base font-bold tabular-nums text-purple-600 leading-none">{{ fmtReward(inviteReward) }}</span>
+              <button
+                data-guide="profile-invite-redeem"
+                class="press flex items-center gap-1 h-7 px-2.5 rounded-lg text-xs font-semibold disabled:opacity-60"
+                :class="canRedeem ? 'invite-btn text-white shadow-sm shadow-purple-500/30' : 'bg-gray-100 text-gray-400'"
+                :disabled="redeemingInvite || !canRedeem"
+                @click="onRedeemInviteTap"
+              >
+                <RefreshCw v-if="redeemingInvite" class="w-3 h-3 animate-spin" />
+                <Coins v-else class="w-3 h-3" />
+                {{ canRedeem ? '免费换次数' : '满 1 可换' }}
+              </button>
+            </div>
           </div>
         </div>
         <!-- 邀请码 + 复制 -->
@@ -669,13 +662,13 @@ async function handleRedeemInvite() {
       wrapper-class="px-4"
       panel-class="max-w-sm"
       :fade="true"
-      :title="redeemKind === 'vip' ? '续费 VIP' : '兑换签到次数'"
+      :title="'兑换 CDK'"
       @update:open="(v: boolean) => { if (!v) closeRedeemModal() }"
     >
       <!-- 弹窗头部 -->
       <div class="flex items-center justify-between px-5 pt-5 pb-2">
         <h3 class="text-base font-semibold text-gray-900">
-          {{ redeemKind === 'vip' ? '续费 VIP' : '兑换签到次数' }}
+          兑换 CDK
         </h3>
         <button class="w-7 h-7 rounded-full bg-gray-100 flex items-center justify-center text-gray-400 hover:text-gray-600" @click="closeRedeemModal">
           <X class="w-4 h-4" />
@@ -686,18 +679,18 @@ async function handleRedeemInvite() {
       <div class="px-5 pb-5 space-y-4">
         <!-- 邀请积分可免费兑换提示：引导用户关闭本弹窗，改用下方邀请信息的兑换按钮 -->
         <div
-          v-if="redeemKind === 'count' && canRedeem"
+          v-if="canRedeem"
           class="rounded-lg bg-amber-50 border border-amber-200 px-3 py-2.5"
         >
           <p class="text-xs text-amber-700 leading-relaxed">
             你的邀请奖励积分已满 1（当前 <span class="font-semibold">{{ fmtReward(inviteReward) }}</span>），
-            可免费兑换签到次数。请关闭本弹窗，点击下方「邀请信息」处的「兑换」按钮即可用积分兑换，无需兑换码。
+            可免费兑换签到次数。请关闭本弹窗，点击上方推广板块中的「免费换次数」按钮即可用积分兑换，无需兑换码。
           </p>
         </div>
 
         <!-- 兑换码输入 -->
         <div>
-          <label class="block text-xs font-medium text-gray-500 mb-1.5">{{ redeemKind === 'vip' ? 'VIP 兑换码' : '兑换码' }}</label>
+          <label class="block text-xs font-medium text-gray-500 mb-1.5">CDK 兑换码</label>
           <Input
             v-model="redeemCodeText"
             placeholder="请输入 CDK 兑换码"