fix(home): 使用图片渲染搜索栏入口

docs/plans/PROGRESS.md

@@ -1115,7 +1115,7 @@ $ flutter test
 - 四类卡片去底板/描边，封面统一 3:4、8 圆角、行距 10、封底标题间距 6；状态角标为右上角紧凑异形丝带。
 - 标题下方恢复左对齐题材文字，使用 `|` 分隔、灰色小字，与封面状态角标保持独立。
 - 首页搜索栏到一级、一级到二级、二级到网格间距为 8/8/10；非精选 tab 直接以 10 衔接网格。
-- 搜索框右侧皇冠与礼物改为 40 热区、28 彩色图标，透明背景、间距 12，保留礼物角标。
+- 搜索框右侧皇冠与礼物使用 28 图片图标，缺图时回退原彩色 Icon；透明热区、间距和角标不变。
 - 播放量贴封面右下角（底 2、右 6），火焰图标 11 + 12/w400 纯文字，间距 4，并保留极淡底部渐变。
 - 修复二级 chip 运行时颜色误用 `const TextStyle` 的编译错误，并校正相关测试 Finder 类型。
 - 全部短剧的地区、字幕、配音筛选 UI 已占位；以下接口待补：地区、字幕/配音筛选数据。

lib/pages/home/widgets/home_grid_header.dart

@@ -143,7 +143,9 @@ class HomeGridHeader extends StatelessWidget {
           _headerAction(
             key: const Key('home-vip-entry'),
             frameKey: const Key('home-vip-icon-frame'),
-            icon: Icons.workspace_premium_outlined,
+            imageKey: const Key('home-vip-image'),
+            assetPath: 'assets/icon/crown.png',
+            fallbackIcon: Icons.workspace_premium_outlined,
             color: AppColors.homeCrownGold,
             tooltip: l10n.vipMembership,
             onTap: callbacks.onOpenVip,
@@ -152,7 +154,9 @@ class HomeGridHeader extends StatelessWidget {
           _headerAction(
             key: const Key('home-wallet-entry'),
             frameKey: const Key('home-wallet-icon-frame'),
-            icon: Icons.card_giftcard_rounded,
+            imageKey: const Key('home-wallet-image'),
+            assetPath: 'assets/icon/gift.png',
+            fallbackIcon: Icons.card_giftcard_rounded,
             color: AppColors.homeGiftPink,
             tooltip: l10n.wallet,
             onTap: callbacks.onOpenWallet,
@@ -166,7 +170,9 @@ class HomeGridHeader extends StatelessWidget {
   Widget _headerAction({
     required Key key,
     required Key frameKey,
-    required IconData icon,
+    required Key imageKey,
+    required String assetPath,
+    required IconData fallbackIcon,
     required Color color,
     required String tooltip,
     required VoidCallback onTap,
@@ -189,10 +195,17 @@ class HomeGridHeader extends StatelessWidget {
                     child: SizedBox.square(
                       key: frameKey,
                       dimension: AppDimens.homeActionIcon,
-                      child: Icon(
-                        icon,
-                        size: AppDimens.homeActionIcon,
-                        color: color,
+                      child: Image.asset(
+                        assetPath,
+                        key: imageKey,
+                        width: AppDimens.homeActionIcon,
+                        height: AppDimens.homeActionIcon,
+                        fit: BoxFit.contain,
+                        errorBuilder: (_, _, _) => Icon(
+                          fallbackIcon,
+                          size: AppDimens.homeActionIcon,
+                          color: color,
+                        ),
                       ),
                     ),
                   ),

pubspec.yaml

@@ -81,6 +81,7 @@ flutter:
   # the material Icons class.
   uses-material-design: true
   assets:
+    - assets/icon/
     - assets/icon/splash_logo.png
     - assets/icon/splash_logo_android12.png
     - assets/icon/rail/

test/home/home_nav_ui_test.dart

@@ -74,6 +74,14 @@ void main() {
       tester.getCenter(find.byKey(const Key('home-vip-icon-frame'))).dy,
       tester.getCenter(find.byKey(const Key('home-wallet-icon-frame'))).dy,
     );
+    final crownImage = tester.widget<Image>(
+      find.byKey(const Key('home-vip-image')),
+    );
+    final giftImage = tester.widget<Image>(
+      find.byKey(const Key('home-wallet-image')),
+    );
+    expect((crownImage.image as AssetImage).assetName, 'assets/icon/crown.png');
+    expect((giftImage.image as AssetImage).assetName, 'assets/icon/gift.png');
     expect(
       tester.getCenter(vipEntry).dy,
       closeTo(tester.getCenter(searchEntry).dy, 0.1),