fix(mobile-app): 待领取奖励卡片也去掉重复的权益类型前缀

与可结算卡片保持一致，只显示"来自用户xxx的认种"部分

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mobile-app/lib/features/profile/presentation/pages/profile_page.dart

@@ -2205,18 +2205,29 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
                       ),
                     ),
                   ),
-                  // 第三行：备注信息
+                  // 第三行：来源信息（从 memo 中提取，去掉权益类型前缀）
                   if (item.memo.isNotEmpty) ...[
                     const SizedBox(height: 4),
-                    Text(
+                    Builder(
-                      item.memo,
+                      builder: (context) {
-                      style: const TextStyle(
+                        // memo 格式如 "分享权益：来自用户D25122400000的认种"
-                        fontSize: 11,
+                        // 去掉前缀，只显示 "来自用户xxx的认种" 部分
-                        fontFamily: 'Inter',
+                        String displayMemo = item.memo;
-                        color: Color(0x995D4037),
+                        final colonIndex = displayMemo.indexOf('：');
-                      ),
+                        if (colonIndex != -1 && colonIndex < displayMemo.length - 1) {
-                      maxLines: 2,
+                          displayMemo = displayMemo.substring(colonIndex + 1);
-                      overflow: TextOverflow.ellipsis,
+                        }
+                        return Text(
+                          displayMemo,
+                          style: const TextStyle(
+                            fontSize: 11,
+                            fontFamily: 'Inter',
+                            color: Color(0x995D4037),
+                          ),
+                          maxLines: 2,
+                          overflow: TextOverflow.ellipsis,
+                        );
+                      },
                     ),
                   ],
                 ],