fix: add ApiClient__BaseUrl environment variable for Dashboard API calls

PROBLEM: Dashboard page was stuck loading forever
ROOT CAUSE:
- AdminDashboardClient requires ApiClient:BaseUrl configuration
- deploy_gb.sh was missing ApiClient__BaseUrl environment variable
- HttpClient had no BaseAddress, causing all API calls to fail

SOLUTION:
- Remove timeout bandaid from App.razor
- Add ApiClient__BaseUrl to deploy_gb.sh environment variables
- API requests will now properly route to http://127.0.0.1:${TARGET_PORT}/taxbaik/api/

EXPECTED RESULT:
- Dashboard API calls succeed
- Dashboard page loads normally
- Blog management page becomes clickable

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/TaxBaik.Web/Components/Admin/App.razor

@@ -42,18 +42,6 @@
         if (!document.documentElement.classList.contains('admin-login-route')) {
             var loadingOverlay = document.getElementById('blazor-loading');
             if (loadingOverlay) loadingOverlay.classList.add('show');
-
-            // WASM 부팅 타임아웃 (30초): 강제로 로딩 숨김
-            window._wasmBootTimeout = setTimeout(function() {
-                if (loadingOverlay && loadingOverlay.classList.contains('show')) {
-                    console.warn('[Admin] WASM boot timeout - forcing hideLoading');
-                    if (window.taxbaikAdminSession && window.taxbaikAdminSession.hideLoading) {
-                        window.taxbaikAdminSession.hideLoading();
-                    } else {
-                        loadingOverlay.classList.remove('show');
-                    }
-                }
-            }, 30000);  // 30초 후 강제 숨김
         }
     </script>
     <MudThemeProvider @bind-IsDarkMode="isDarkMode" Theme="mudTheme" />