feat(mp+health): 小程序分包迁移 + 积分商城后台列表 API

- 小程序页面迁移到 pkg-health/pkg-mall/pkg-profile 分包目录
- 删除旧 pages/health/input、pages/mall/detail 等旧路径
- 导航路径更新为分包路径（/pages/pkg-mall/exchange/index 等）
- TrendChart 组件优化
- 后台添加 admin_list_products API（支持查看已下架商品）
- config/index.ts 添加 defineConstants 环境变量
- mp e2e check-readiness 路径修正

apps/miniprogram/src/pages/pkg-mall/exchange/index.scss

@@ -0,0 +1,218 @@
+@import '../../../styles/variables.scss';
+
+@mixin serif-number {
+  font-family: 'Georgia', 'Times New Roman', serif;
+  font-variant-numeric: tabular-nums;
+}
+
+@mixin section-title {
+  font-family: 'Georgia', 'Times New Roman', serif;
+  font-size: 30px;
+  font-weight: bold;
+  color: $tx;
+  margin-bottom: 20px;
+  display: block;
+}
+
+@mixin tag($bg, $color) {
+  display: inline-block;
+  padding: 4px 12px;
+  border-radius: 8px;
+  font-size: 20px;
+  font-weight: 500;
+  background: $bg;
+  color: $color;
+}
+
+@mixin flex-center {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.exchange-page {
+  min-height: 100vh;
+  background: $bg;
+  padding-bottom: 140px;
+}
+
+/* ===== 商品预览 ===== */
+.product-card {
+  display: flex;
+  align-items: center;
+  padding: 32px 24px;
+  background: $card;
+  margin: 20px 24px 16px;
+  border-radius: $r-lg;
+  box-shadow: $shadow-sm;
+}
+
+.product-icon-wrap {
+  width: 128px;
+  height: 128px;
+  border-radius: $r;
+  @include flex-center;
+  margin-right: 24px;
+  flex-shrink: 0;
+}
+
+.product-icon-char {
+  font-family: 'Georgia', 'Times New Roman', serif;
+  font-size: 52px;
+  font-weight: bold;
+  color: #FFFFFF;
+}
+
+.product-meta {
+  flex: 1;
+  min-width: 0;
+}
+
+.product-name {
+  font-size: 32px;
+  font-weight: bold;
+  color: $tx;
+  display: block;
+  margin-bottom: 12px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.product-type-tag {
+  @include tag($pri-l, $pri-d);
+}
+
+/* ===== 兑换明细 ===== */
+.detail-section {
+  padding: 0 24px;
+  margin-bottom: 16px;
+}
+
+.detail-section-title {
+  @include section-title;
+}
+
+.detail-card {
+  background: $card;
+  border-radius: $r;
+  box-shadow: $shadow-sm;
+  padding: 0 24px;
+}
+
+.detail-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 24px 0;
+  border-bottom: 1px solid $bd-l;
+
+  &.last {
+    border-bottom: none;
+  }
+}
+
+.detail-label {
+  font-size: 28px;
+  color: $tx2;
+}
+
+.detail-value {
+  @include serif-number;
+  font-size: 28px;
+  color: $tx;
+  font-weight: bold;
+
+  &.detail-cost {
+    color: $pri;
+    font-size: 34px;
+  }
+
+  &.detail-sufficient {
+    color: $acc;
+  }
+
+  &.detail-insufficient {
+    color: $dan;
+  }
+}
+
+/* ===== 温馨提示 ===== */
+.notice-section {
+  background: $card;
+  padding: 24px;
+  margin: 0 24px;
+  border-radius: $r;
+  box-shadow: $shadow-sm;
+}
+
+.notice-title {
+  @include section-title;
+  font-size: 28px;
+  margin-bottom: 12px;
+}
+
+.notice-text {
+  font-size: 24px;
+  color: $tx3;
+  display: block;
+  line-height: 1.7;
+  margin-bottom: 4px;
+}
+
+/* ===== 底部操作栏 ===== */
+.exchange-footer {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  display: flex;
+  align-items: center;
+  padding: 16px 24px;
+  padding-bottom: calc(16px + env(safe-area-inset-bottom));
+  background: $card;
+  box-shadow: 0 -2px 12px rgba(45, 42, 38, 0.06);
+  z-index: 10;
+}
+
+.footer-cost {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+}
+
+.footer-cost-label {
+  font-size: 22px;
+  color: $tx3;
+}
+
+.footer-cost-num {
+  @include serif-number;
+  font-size: 38px;
+  font-weight: bold;
+  color: $pri;
+}
+
+.footer-cost-unit {
+  font-size: 22px;
+  color: $tx2;
+  margin-left: 4px;
+}
+
+.confirm-btn {
+  background: $pri;
+  padding: 20px 48px;
+  border-radius: $r-pill;
+  transition: opacity 0.2s;
+
+  &.disabled {
+    background: $bd;
+    opacity: 0.7;
+  }
+}
+
+.confirm-btn-text {
+  font-size: 30px;
+  color: white;
+  font-weight: bold;
+}