fix(home): 调整搜索栏右侧入口样式

lib/pages/home/widgets/home_grid_header.dart

@@ -143,13 +143,15 @@ class HomeGridHeader extends StatelessWidget {
           _headerAction(
             key: const Key('home-vip-entry'),
             icon: Icons.workspace_premium_outlined,
+            color: AppColors.homeCrownGold,
             tooltip: l10n.vipMembership,
             onTap: callbacks.onOpenVip,
           ),
-          const SizedBox(width: AppDimens.spaceXs),
+          const SizedBox(width: AppDimens.homeActionGap),
           _headerAction(
             key: const Key('home-wallet-entry'),
             icon: Icons.card_giftcard_rounded,
+            color: AppColors.homeGiftPink,
             tooltip: l10n.wallet,
             onTap: callbacks.onOpenWallet,
             badge: walletBadge,
@@ -162,12 +164,13 @@ class HomeGridHeader extends StatelessWidget {
   Widget _headerAction({
     required Key key,
     required IconData icon,
+    required Color color,
     required String tooltip,
     required VoidCallback onTap,
     int? badge,
   }) {
     return SizedBox.square(
-      dimension: AppDimens.homeIconSlot,
+      dimension: AppDimens.homeActionSlot,
       child: Stack(
         clipBehavior: Clip.none,
         children: [
@@ -175,16 +178,14 @@ class HomeGridHeader extends StatelessWidget {
             child: Tooltip(
               message: tooltip,
               child: Material(
-                color: AppColors.contentSurface,
-                borderRadius: BorderRadius.circular(AppDimens.inputRadius),
+                color: AppColors.transparent,
                 child: InkWell(
                   key: key,
-                  borderRadius: BorderRadius.circular(AppDimens.inputRadius),
                   onTap: onTap,
                   child: Icon(
                     icon,
-                    size: AppDimens.homeHeaderIcon,
-                    color: AppColors.navSelected,
+                    size: AppDimens.homeActionIcon,
+                    color: color,
                   ),
                 ),
               ),