fix(analytics): exclude chat send button tracking

src/app/chat/components/__tests__/tailwind-components.test.tsx

@@ -96,7 +96,8 @@ describe("chat Tailwind components", () => {
     );
 
     expect(activeHtml).toContain('aria-label="Send message"');
-    expect(activeHtml).toContain('data-analytics-key="chat.send_message"');
+    expect(activeHtml).toContain('data-analytics-ignore="true"');
+    expect(activeHtml).not.toContain("data-analytics-key");
     expect(activeHtml).toContain("size-(--chat-send-button-size,40px)");
     expect(activeHtml).toContain(
       "bg-[linear-gradient(to_right,var(--color-button-gradient-start,#ff67e0),var(--color-button-gradient-end,#ff52a2))]",

src/app/chat/components/chat-send-button.tsx

@@ -1,15 +1,4 @@
 "use client";
-/**
- * ChatSendButton 发送按钮
- *
- * 
- *
- * 视觉：
- *   - 默认：粉色背景 + 渐变边缘
- *   - 聚焦 / 激活：完整 primaryGradient（accent → 透明）
- *
- * 图标：固定显示 <ArrowUp />，按钮只负责发送消息。
- */
 import { ArrowUp } from "lucide-react";
 
 export interface ChatSendButtonProps {
@@ -29,8 +18,7 @@ export function ChatSendButton({
   return (
     <button
       type="button"
-      data-analytics-key="chat.send_message"
+      data-analytics-ignore
-      data-analytics-label="Send message"
       className={[
         "flex aspect-square size-(--chat-send-button-size,40px) shrink-0 cursor-pointer items-center justify-center rounded-full border-0 bg-(--color-button-gradient-end,#fc69df) text-white transition-[background,transform] duration-200 disabled:cursor-not-allowed disabled:opacity-40 focus-visible:bg-[linear-gradient(to_right,var(--color-button-gradient-start,#ff67e0),var(--color-button-gradient-end,#ff52a2))]",
         isActive