feat(ChatPage): 新增链接卡片消息渲染（支持解析 XML 并展示标题 / 描述 / 图标），采用 flexbox 优化消息气泡布局，添加文本截断、响应式样式及悬浮效果。

src/pages/ChatPage.scss

@@ -370,9 +370,23 @@
       }
 
       .message-bubble {
-        max-width: 65%;
+        display: flex;
+        gap: 12px;
+        max-width: 80%;
+        margin-bottom: 4px;
+        align-items: flex-start;
+
+        .bubble-body {
+          display: flex;
+          flex-direction: column;
+          max-width: 100%;
+          min-width: 0; // 允许收缩
+          width: fit-content; // 让气泡宽度由内容决定
+        }
 
         &.sent {
+          flex-direction: row-reverse;
+
           .bubble-content {
             background: var(--primary-gradient);
             color: #fff;
@@ -436,6 +450,11 @@
         font-size: 12px;
         color: var(--text-secondary);
         margin-bottom: 4px;
+        // 防止名字撑开气泡宽度
+        max-width: 100%;
+        overflow: hidden;
+        text-overflow: ellipsis;
+        white-space: nowrap;
       }
 
       .quoted-message {
@@ -798,6 +817,99 @@
 }
 
 // 右侧消息区域
+// ... (previous content) ...
+
+// 链接卡片消息样式
+.link-message {
+  cursor: pointer;
+  background: var(--card-bg);
+  border-radius: 8px;
+  overflow: hidden;
+  border: 1px solid var(--border-color);
+  transition: all 0.2s ease;
+  max-width: 300px;
+  margin-top: 4px;
+
+  &:hover {
+    background: var(--bg-hover);
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
+  }
+
+  .link-header {
+    display: flex;
+    align-items: flex-start;
+    padding: 12px;
+    gap: 12px;
+  }
+
+  .link-content {
+    flex: 1;
+    min-width: 0;
+  }
+
+  .link-title {
+    font-size: 14px;
+    font-weight: 500;
+    color: var(--text-primary);
+    margin-bottom: 4px;
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    line-clamp: 2;
+    -webkit-box-orient: vertical;
+    overflow: hidden;
+    line-height: 1.4;
+  }
+
+  .link-desc {
+    font-size: 12px;
+    color: var(--text-secondary);
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    line-clamp: 2;
+    -webkit-box-orient: vertical;
+    overflow: hidden;
+    line-height: 1.4;
+    opacity: 0.8;
+  }
+
+  .link-icon {
+    flex-shrink: 0;
+    width: 40px;
+    height: 40px;
+    background: var(--bg-tertiary);
+    border-radius: 6px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: var(--text-secondary);
+
+    svg {
+      opacity: 0.8;
+    }
+  }
+}
+
+// 适配发送出去的消息中的链接卡片
+.message-bubble.sent .link-message {
+  background: rgba(255, 255, 255, 0.1);
+  border-color: rgba(255, 255, 255, 0.2);
+
+  .link-title,
+  .link-desc {
+    color: #fff;
+  }
+
+  .link-icon {
+    background: rgba(255, 255, 255, 0.2);
+    color: #fff;
+  }
+
+  &:hover {
+    background: rgba(255, 255, 255, 0.2);
+  }
+}
+
 .message-area {
   flex: 1 1 70%;
   display: flex;
@@ -1493,6 +1605,11 @@
   font-size: 12px;
   color: var(--text-tertiary);
   margin-bottom: 4px;
+  // 防止名字撑开气泡宽度
+  max-width: 100%;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
 }
 
 // 引用消息样式
@@ -1541,7 +1658,11 @@
   display: flex;
   flex-direction: column;
   max-width: 100%;
+  min-width: 0; // 允许收缩
   -webkit-app-region: no-drag;
+  
+  // 让气泡宽度由内容决定，而不是被父容器撑开
+  width: fit-content;
 }
 
 .bubble-content {
@@ -1956,4 +2077,92 @@
     width: 14px;
     height: 14px;
   }
+}
+
+/* 链接消息样式 (Link Card/App Message) */
+.link-message {
+  background: var(--card-bg);
+  border: 1px solid var(--border-color);
+  border-radius: 8px;
+  padding: 12px;
+  width: 280px;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  overflow: hidden;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
+
+  &:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+    border-color: var(--primary-light);
+  }
+
+  .link-header {
+    display: flex;
+    gap: 12px;
+    align-items: flex-start;
+  }
+
+  .link-content {
+    flex: 1;
+    min-width: 0;
+  }
+
+  .link-title {
+    font-size: 14px;
+    font-weight: 600;
+    color: var(--text-primary);
+    margin-bottom: 4px;
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+    line-clamp: 2;
+    overflow: hidden;
+    line-height: 1.4;
+  }
+
+  .link-desc {
+    font-size: 12px;
+    color: var(--text-secondary);
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+    line-clamp: 2;
+    overflow: hidden;
+    line-height: 1.4;
+  }
+
+  .link-icon {
+    width: 40px;
+    height: 40px;
+    background: var(--bg-tertiary);
+    border-radius: 4px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: var(--text-tertiary);
+    flex-shrink: 0;
+
+    svg {
+      opacity: 0.6;
+    }
+  }
+}
+
+/* 适配发送方的背景，使其从气泡颜色中脱离出来，看起来像个独立的卡片 */
+.message-bubble.sent .link-message {
+  background: #fff;
+  border: 1px solid rgba(0, 0, 0, 0.1);
+
+  .link-title {
+    color: #333;
+  }
+
+  .link-desc {
+    color: #666;
+  }
+
+  .link-icon {
+    background: #f5f5f5;
+  }
 }