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

apps/DEMO-miniprogram/miniprogram/assets/icons/heart-filled.svg

@@ -0,0 +1,22 @@
+<!-- 实心爱心 - 华丽版 -->
+<svg width="48" height="48" viewBox="0 0 48 48" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <!-- 外发光 -->
+  <defs>
+    <filter id="glow">
+      <feGaussianBlur stdDeviation="2" result="coloredBlur"/>
+      <feMerge>
+        <feMergeNode in="coloredBlur"/>
+        <feMergeNode in="SourceGraphic"/>
+      </feMerge>
+    </filter>
+    <linearGradient id="heartGradient" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#ff6b9d;stop-opacity:1" />
+      <stop offset="50%" style="stop-color:#e34d59;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#c9184a;stop-opacity:1" />
+    </linearGradient>
+  </defs>
+  <!-- 主体爱心 -->
+  <path d="M24 42L20.55 38.85C11.4 30.48 5.25 24.87 5.25 18C5.25 12.39 9.39 8.25 15 8.25C18.09 8.25 21.06 9.69 23.25 12C25.44 9.69 28.41 8.25 31.5 8.25C37.11 8.25 41.25 12.39 41.25 18C41.25 24.87 35.1 30.48 25.95 38.85L24 42Z" fill="url(#heartGradient)" filter="url(#glow)"/>
+  <!-- 高光 -->
+  <path d="M15 8.25C12.5 8.25 10.3 9.2 8.8 10.8C10.5 9.5 12.6 8.8 15 8.8C17.5 8.8 19.8 9.8 21.5 11.5C20 9.5 17.7 8.25 15 8.25Z" fill="white" opacity="0.4"/>
+</svg>