Fix admin routing and Playwright smoke checks

src/TaxBaik.Web/Program.cs

@@ -395,12 +395,9 @@ app.MapHealthChecks("/healthz");
 app.MapRazorPages();  // Sitemap.cshtml, Rss.cshtml, Feed.cshtml
 app.MapStaticAssets();
 
-// Blazor WebAssembly - prerender: false 페이지 지원
-// 대시보드 등은 prerender: false이므로 MapRazorComponents 필수
-// AddAdditionalAssemblies: WASM 클라이언트의 모든 컴포넌트 명시적 등록 (필수!)
+// Blazor WebAssembly - prerender 지원
 app.MapRazorComponents<TaxBaik.WasmClient.Components.Admin.App>()
    .AddInteractiveWebAssemblyRenderMode()
-   .AddAdditionalAssemblies(typeof(TaxBaik.WasmClient.Components.Admin._Imports).Assembly)
    .AllowAnonymous();
 
 // SPA 라우팅 폴백

src/TaxBaik.Web/wwwroot/css/admin.css

@@ -1547,8 +1547,9 @@ textarea:focus-visible {
 }
 
 #blazor-loading.show {
-  display: flex;
-  animation: overlayFadeIn 0.15s ease-out;
+    display: flex;
+    animation: overlayFadeIn 0.15s ease-out;
+    pointer-events: none;
 }
 
 @keyframes overlayFadeIn {

src/TaxBaik.Web/wwwroot/js/admin-session.js

@@ -1,3 +1,14 @@
+// Debug 환경에서 .pdb 파일 요청 차단 (WASM 부팅 최적화)
+if (window.taxbaikBlockPdb) {
+    const originalFetch = window.fetch;
+    window.fetch = function(url, ...args) {
+        if (typeof url === 'string' && url.includes('.pdb')) {
+            return Promise.reject(new TypeError('Blocked: pdb'));
+        }
+        return originalFetch.apply(window, [url, ...args]);
+    };
+}
+
 window.taxbaikAdminSession = {
     clientLogState: {
         enabled: true,
@@ -348,7 +359,7 @@ window.taxbaikAdminSession = {
                 // Blazor가 대시보드 페이지를 로드할 때 CustomAuthenticationStateProvider가
                 // 자동으로 localStorage에서 토큰을 복원합니다
                 setTimeout(() => {
-                    window.location.href = '/admin/dashboard';
+                    window.location.href = '/taxbaik/admin/dashboard';
                 }, 200);
             } catch (error) {
                 window.taxbaikAdminSession.traceUiState('admin-login', `submit failed: ${error?.message || 'login failed'}`);