Refactor admin dashboard and standardize UI shells

src/TaxBaik.Web.Client/Components/Admin/Pages/RevenueTrackings.razor

@@ -9,13 +9,7 @@
 
 <PageTitle>수익 추적 관리</PageTitle>
 
-<section class="admin-page-hero">
-    <div>
-        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM & 세무관리</MudText>
-        <MudText Typo="Typo.h4" Class="admin-page-title">수익 추적 관리</MudText>
-        <MudText Typo="Typo.body2" Class="admin-page-subtitle">초기 렌더 진단용 최소 화면입니다.</MudText>
-    </div>
-</section>
+<AdminPageHeader Title="수익 추적 관리" Eyebrow="CRM & 세무관리" Subtitle="청구 기록과 수익 흐름을 확인합니다." />
 
 <AdminDataPanel Loading="@(revenues is null)" SkeletonContent="@RevenueSkeleton">
     @if (revenues is null)