feat: chat integration, tenant admin spec, backend chat service, miniprogram updates, DEMO moved to tmp, XCX-TEST removed, migrations & docs

tmp/DEMO-miniprogram/miniprogram/assets/images/stamp-badge.svg

@@ -0,0 +1,69 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 95 95" width="95" height="95">
+  <defs>
+    <filter id="textBlur">
+      <feGaussianBlur stdDeviation="0.73"/>
+    </filter>
+    <!-- 内圆填充：从边框向圆心的单向光路，边缘不透明→圆心透明 -->
+    <radialGradient id="innerLight" cx="50%" cy="50%" r="50%" gradientUnits="objectBoundingBox">
+      <stop offset="0%" stop-color="white" stop-opacity="0"/>
+      <stop offset="60%" stop-color="white" stop-opacity="0.18"/>
+      <stop offset="82%" stop-color="white" stop-opacity="0.38"/>
+      <stop offset="95%" stop-color="white" stop-opacity="0.75"/>
+      <stop offset="100%" stop-color="white" stop-opacity="0.95"/>
+    </radialGradient>
+  </defs>
+
+  <rect width="95" height="95" fill="transparent"/>
+
+  <!-- 外圆：更鲜艳红色 -->
+  <circle cx="47.5" cy="47.5" r="44.75"
+    fill="transparent"
+    stroke="rgb(255, 45, 45)"
+    stroke-width="5.5"/>
+
+  <!-- 内圆填充：从边框向圆心的光路渐变 -->
+  <circle cx="47.5" cy="47.5" r="40.25"
+    fill="url(#innerLight)"/>
+
+  <!-- 内圆：纯白描边，无发光 -->
+  <circle cx="47.5" cy="47.5" r="40.25"
+    fill="none"
+    stroke="rgb(255, 255, 255)"
+    stroke-width="3.65"/>
+
+  <!-- 👍 Emoji -->
+  <text x="47.5" y="33"
+    font-size="33"
+    text-anchor="middle"
+    dominant-baseline="middle"
+    fill="#000">👍</text>
+
+  <!-- 白色描边层 -->
+  <text x="47.5" y="72"
+    font-family="sans-serif, -apple-system, BlinkMacSystemFont"
+    font-size="20"
+    font-weight="bold"
+    text-anchor="middle"
+    fill="rgba(255,255,255,0.95)"
+    stroke="rgba(255,255,255,0.95)"
+    stroke-width="4"
+    paint-order="stroke">已完成</text>
+
+  <!-- 模糊白色光晕层 -->
+  <text x="47.5" y="72"
+    font-family="sans-serif, -apple-system, BlinkMacSystemFont"
+    font-size="20"
+    font-weight="bold"
+    text-anchor="middle"
+    fill="rgba(255,255,255,0.9)"
+    opacity="0.9"
+    filter="url(#textBlur)">已完成</text>
+
+  <!-- 红色文字主体：更鲜艳 -->
+  <text x="47.5" y="72"
+    font-family="sans-serif, -apple-system, BlinkMacSystemFont"
+    font-size="20"
+    font-weight="bold"
+    text-anchor="middle"
+    fill="rgb(235, 25, 25)">已完成</text>
+</svg>