feat: batch update - gift card breakdown spec, backend APIs, miniprogram pages, ETL finance recharge, docs & migrations

apps/DEMO-miniprogram/miniprogram/components/heart-icon/heart-icon.json

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+{
+  "component": true,
+  "usingComponents": {}
+}

apps/DEMO-miniprogram/miniprogram/components/heart-icon/heart-icon.ts

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+Component({
+  properties: {
+    /** 评分 0-10，超出范围自动 clamp */
+    score: {
+      type: Number,
+      value: 0,
+    },
+  },
+
+  data: {
+    heartEmoji: '💙',
+  },
+
+  observers: {
+    score(val: number) {
+      const s = val < 0 ? 0 : val > 10 ? 10 : val
+      let emoji: string
+      if (s > 8.5) {
+        emoji = '💖'  // 粉红色 - 很好
+      } else if (s >= 6) {
+        emoji = '🧡'  // 橙色 - 良好
+      } else if (s >= 3.5) {
+        emoji = '💛'  // 黄色 - 一般
+      } else {
+        emoji = '💙'  // 蓝色 - 待发展
+      }
+      this.setData({ heartEmoji: emoji })
+    },
+  },
+})

apps/DEMO-miniprogram/miniprogram/components/heart-icon/heart-icon.wxml

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+<text class="heart-icon">{{heartEmoji}}</text>

apps/DEMO-miniprogram/miniprogram/components/heart-icon/heart-icon.wxss

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+.heart-icon {
+  font-size: 22rpx;
+  line-height: 1;
+  position: relative;
+  top: -4rpx;
+}