feat: 优化名片分享海报与详情交互

- 为律师详情页增加分享海报生成与分享封面图

- 新增律所简介入口并调整个人简介为页面整体滚动

frontend_miniprogram/miniprogram/pages/lawyer-detail/index.less

@@ -175,12 +175,6 @@
   white-space: pre-wrap;
 }
 
-.bio-scroll {
-  height: 360rpx;
-  box-sizing: border-box;
-  padding-right: 8rpx;
-}
-
 .firm-mini-card {
   background: #fff;
   padding: var(--spacing-md);
@@ -232,6 +226,16 @@
   height: 160rpx;
 }
 
+.share-poster-canvas {
+  position: fixed;
+  left: -9999px;
+  top: -9999px;
+  width: 500px;
+  height: 400px;
+  opacity: 0;
+  pointer-events: none;
+}
+
 .not-found-action {
   padding: var(--spacing-lg);
   text-align: center;