fix(h5): show TKMind as the user-facing product name

Keep the chat chrome, page title, and related copy aligned with the existing TKMind brand.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/FeedbackSubmitView.tsx

@@ -8,6 +8,7 @@ import {
   CHAT_IMAGE_MAX_SIDE,
   compressImageForUpload,
 } from '../utils/imageUpload';
+import { APP_DISPLAY_NAME } from '../utils/appBrand';
 import { FeedbackPageHeader } from './FeedbackPageHeader';
 import { VoiceInputButton } from './VoiceInputButton';
 
@@ -277,7 +278,7 @@ export function FeedbackSubmitView({
           >
             <div className="feedback-board-toolbar">
               <div className="feedback-board-toolbar-copy">
-                <p className="feedback-submit-eyebrow">帮助我们改进 Memind</p>
+                <p className="feedback-submit-eyebrow">帮助我们改进 {APP_DISPLAY_NAME}</p>
                 <h1>提交 Bug 或需求</h1>
                 <p className="feedback-submit-desc feedback-board-desc">
                   你可以用文字描述、上传截图，或点击麦克风口述问题。我们会自动附带当前页面与设备信息，便于定位问题。

src/utils/appBrand.ts

@@ -1,5 +1,5 @@
 /** User-facing product name shown in nav, login, and page chrome. */
-export const APP_DISPLAY_NAME = 'Memind';
+export const APP_DISPLAY_NAME = 'TKMind';
 
 /** Branded tagline suffix used on welcome and marketing surfaces. */
 export const APP_DISPLAY_TAGLINE = `${APP_DISPLAY_NAME} 智趣`;