refactor(mobile-app): 树转让入口从"我"页面迁移至"实名认证"页面

将"发起转让"和"转让记录"按钮从 ProfilePage 顶部移除，
归类为"树服务"放入 KycEntryPage（实名认证入口页），
位于"其他操作 > 验证/更换手机号"的下方。

变更详情：
- profile_page.dart:
  · 移除 _buildTransferButtons() 方法及其调用
  · 移除 _goToTransferInitiate() / _goToTransferList() 导航方法
- kyc_entry_page.dart:
  · 在"验证/更换手机号"下方新增"树服务"分类标题
  · 新增"发起转让"操作卡片 → /transfer/initiate
  · 新增"转让记录"操作卡片 → /transfer/list
  · 复用页面已有的 _buildActionCard 样式，保持 UI 一致

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/mobile-app/lib/features/kyc/presentation/pages/kyc_entry_page.dart

@@ -136,6 +136,34 @@ class KycEntryPage extends ConsumerWidget {
 
           SizedBox(height: 24.h),
 
+          // 树服务
+          Text(
+            '树服务',
+            style: TextStyle(
+              fontSize: 16.sp,
+              fontWeight: FontWeight.w600,
+              color: const Color(0xFF333333),
+            ),
+          ),
+          SizedBox(height: 12.h),
+          _buildActionCard(
+            context: context,
+            icon: Icons.swap_horiz,
+            title: '发起转让',
+            description: '向其他用户发起树转让',
+            onTap: () => context.push(RoutePaths.transferInitiate),
+          ),
+          SizedBox(height: 8.h),
+          _buildActionCard(
+            context: context,
+            icon: Icons.receipt_long_outlined,
+            title: '转让记录',
+            description: '查看树转让历史记录',
+            onTap: () => context.push(RoutePaths.transferList),
+          ),
+
+          SizedBox(height: 24.h),
+
           // 说明文字
           _buildInfoCard(),
         ],

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

@@ -1366,16 +1366,6 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
     context.push(RoutePaths.prePlantingPosition);
   }
 
-  /// [2026-02-19] 进入转让发起页
-  void _goToTransferInitiate() {
-    context.push(RoutePaths.transferInitiate);
-  }
-
-  /// [2026-02-19] 进入转让记录页
-  void _goToTransferList() {
-    context.push(RoutePaths.transferList);
-  }
-
   /// 谷歌验证器
   void _goToGoogleAuth() {
     context.push(RoutePaths.googleAuth);
@@ -1567,8 +1557,6 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
                       _buildPrePlantingButtons(),
                       const SizedBox(height: 8),
                     ],
-                    // [2026-02-19] 纯新增：树转让按钮（发起转让 + 转让记录）
-                    _buildTransferButtons(),
                     const SizedBox(height: 16),
                     // 主要内容卡片（懒加载：收益数据）
                     VisibilityDetector(
@@ -2140,91 +2128,6 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
     );
   }
 
-  /// [2026-02-19] 构建树转让按钮行（发起转让 + 转让记录）
-  ///
-  /// 复用预种按钮的样式，使用绿色系配色区分
-  Widget _buildTransferButtons() {
-    return Row(
-      children: [
-        // 发起转让按钮
-        Expanded(
-          child: GestureDetector(
-            onTap: _goToTransferInitiate,
-            child: Container(
-              height: 44,
-              decoration: BoxDecoration(
-                color: const Color(0xFF2E7D32).withValues(alpha: 0.15),
-                borderRadius: BorderRadius.circular(8),
-                border: Border.all(
-                  color: const Color(0xFF2E7D32).withValues(alpha: 0.4),
-                  width: 1,
-                ),
-              ),
-              child: const Row(
-                mainAxisAlignment: MainAxisAlignment.center,
-                children: [
-                  Icon(
-                    Icons.swap_horiz,
-                    color: Color(0xFF4CAF50),
-                    size: 18,
-                  ),
-                  SizedBox(width: 6),
-                  Text(
-                    '发起转让',
-                    style: TextStyle(
-                      fontSize: 14,
-                      fontFamily: 'Inter',
-                      fontWeight: FontWeight.w600,
-                      color: Color(0xFF4CAF50),
-                    ),
-                  ),
-                ],
-              ),
-            ),
-          ),
-        ),
-        const SizedBox(width: 8),
-        // 转让记录按钮
-        Expanded(
-          child: GestureDetector(
-            onTap: _goToTransferList,
-            child: Container(
-              height: 44,
-              decoration: BoxDecoration(
-                color: const Color(0xFF1565C0).withValues(alpha: 0.1),
-                borderRadius: BorderRadius.circular(8),
-                border: Border.all(
-                  color: const Color(0xFF1565C0).withValues(alpha: 0.25),
-                  width: 1,
-                ),
-              ),
-              child: const Row(
-                mainAxisAlignment: MainAxisAlignment.center,
-                children: [
-                  Icon(
-                    Icons.receipt_long_outlined,
-                    color: Color(0xFF42A5F5),
-                    size: 18,
-                  ),
-                  SizedBox(width: 6),
-                  Text(
-                    '转让记录',
-                    style: TextStyle(
-                      fontSize: 14,
-                      fontFamily: 'Inter',
-                      fontWeight: FontWeight.w600,
-                      color: Color(0xFF42A5F5),
-                    ),
-                  ),
-                ],
-              ),
-            ),
-          ),
-        ),
-      ],
-    );
-  }
-
   /// 构建主要内容卡片
   Widget _buildMainContentCard() {
     // Widget 结构始终保持，数据值根据状态显示 "0" 或实际值