fix: per-page WASM render mode, Contact checkbox binding, Telegram inquiry channel

- Admin: replace the global @rendermode on <Routes>/<Router> with per-page
  render mode. Login.razor now prerenders (form visible before WASM loads);
  every other [Authorize] page stays prerender: false to avoid the
  AuthorizeRouteView blank-render regression from earlier attempts. Adds a
  "준비 중" -> "로그인" splash tied to WASM boot completion, and lets the
  authenticated-shell loading overlay stay up until AdminShell actually renders.
- Contact.cshtml: fix the "Agree" checkbox missing value="true" - a checked
  box sent the browser-default "on", which bool model binding can't parse,
  so ModelState.IsValid silently went false and OnPostAsync returned a blank
  form with no visible error on every submission. Validation summary widened
  from ModelOnly to All so this class of failure isn't silent again.
- TelegramInquiryNotificationService: read Telegram:InquiryChatId (falling
  back to ChatId) instead of only ChatId, matching the channel routing
  CLAUDE.md documents and deploy.yml already provisions as separate secrets.
- Reconcile CLAUDE.md's self-contradicting Phase 8 prerender notes (Phase 9),
  rewrite validate_admin_render.sh for the per-page design, and add a
  SmartAdmin 5.5 design reference section to DOUZONE_UX_GUIDE.md for future
  admin screens (existing screens unchanged, tracked as WBS P4-03).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CLAUDE.md

@@ -134,7 +134,24 @@ export DOTNET_PRINT_TELEMETRY_MESSAGE=false
 
 **완료**: 2026-07-03 / WebAssembly 기반 아키텍처 확정 + 프로덕션 검증
 
-**현재 상태**: **✅ Phase 1-8 COMPLETE & VERIFIED (2026-07-03)**
+**⚠️ Phase 8 알려진 한계 (Phase 9에서 수정됨)**:
+Phase 8에서는 `<Routes>`(App.razor)와 `<Router>`(Routes.razor)에 전역 `@rendermode`를 지정해 `prerender: false`로 고정했다. 그 결과 로그인 화면을 포함한 모든 어드민 페이지가 WASM 다운로드 완료 전까지 빈 화면/스피너만 보여주는 문제가 있었다(`scripts/validate_admin_render.sh`에 이 트레이드오프가 "기능 우선, 흰 화면 0.5~2초 감수"로 기록되어 있었음). 이는 `docs/ENGINEERING_HARNESS.md`의 "로그인 화면은 예외적으로 서버 프리렌더 허용" 규칙을 충족하지 못한 상태였다. Phase 9에서 페이지별 개별 렌더모드 지정으로 교체했다.
+
+#### Phase 9: 어드민 페이지별 렌더모드 정상화 ✅ (2026-07-03)
+- [x] `App.razor`/`Routes.razor`에서 전역 `@rendermode` 제거 (Router/Routes 자체는 렌더모드를 강제하지 않음)
+- [x] `Login.razor`만 `@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: true))`로 명시 → 로그인 폼이 최초 HTML 응답에 정적으로 포함되어 WASM 다운로드 중에도 즉시 표시됨
+- [x] 나머지 `[Authorize]` 어드민 페이지는 `@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))`로 명시 유지 → 인증 컨텍스트 없이 prerender될 때 `AuthorizeRouteView`가 빈 화면을 그리는 문제(Phase 8 초기에 겪었던 문제) 재발 방지
+- [x] WASM 부팅 완료 전 로그인 버튼은 "준비 중" 비활성 상태로 표시, 부팅 완료 시 정상 상태로 전환(업데이트 스플래시)
+
+**핵심 원칙**: Blazor Web App은 "전역 렌더모드" 또는 "페이지별 렌더모드" 중 하나만 선택할 수 있다. Router/Routes에 렌더모드를 지정하면 그 하위 모든 페이지의 개별 `@rendermode` 지시자는 무시된다. 로그인만 예외적으로 prerender가 필요하므로 전역 방식을 버리고 페이지별 방식으로 전환했다.
+
+**완료**: 2026-07-03 / 로그인 흰 화면 제거 + 인증 페이지 안정성 유지
+
+**보류된 결정 (2026-07-03, 향후 별도 Phase)**:
+- 공개 홈페이지 Razor Pages → MVC(Controller+View) 전면 재작성: 기능적 이득 없이 운영 중인 SEO 트래픽 페이지 전체를 기계적으로 재작성하는 고비용 작업이라 이번엔 보류. 필요 시 Phase 10으로 별도 진행.
+- 포털(고객용, `Pages/Portal/*`, 현재 Razor Pages + 쿠키/OAuth) → 어드민과 동일한 MudBlazor+WASM 전환: 완전히 새로운 프로젝트 구조가 필요해 이번 범위에서 제외. 필요 시 Phase 11로 별도 진행.
+
+**현재 상태**: **✅ Phase 1-9 COMPLETE & VERIFIED (2026-07-03)**
 - ✅ 모든 API 엔드포인트 구현됨
 - ✅ 모든 Browser Client 구현됨
 - ✅ 16개 Blazor 페이지 API-First 마이그레이션 완료
@@ -2035,7 +2052,7 @@ else
 
 | 항목 | 이전 | 현재 | 개선 |
 |------|------|------|------|
-| **Blazor 프리렌더링** | `prerender: false` | `prerender: true` | 흰 화면 제거 |
+| **Blazor 프리렌더링** | 전역 `prerender: false` (로그인 포함 전체 흰 화면) | 페이지별 지정 (로그인만 `prerender: true`, 나머지 `false`) | 로그인 흰 화면 제거, 인증 페이지는 그대로 안정 |
 | **배포 헬스 체크** | 40 × 3초 = 120초 | 20 × 3초 = 60초 | -50% |
 | **E2E 배포 대기** | 30 × 5초 = 150초 | 20 × 3초 = 60초 | -60% |
 | **Playwright 병렬** | `fullyParallel: false` | CI에서 `true` | 테스트 병렬화 |

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

@@ -35,8 +35,17 @@
             <p>로드 중...</p>
         </div>
     </div>
+    <script>
+        // 로그인 화면은 prerender로 즉시 표시되므로 스피너가 필요 없다.
+        // 그 외 인증 화면은 WASM 부팅이 끝날 때까지(AdminShell.OnAfterRenderAsync에서 hideLoading 호출)
+        // 스피너를 "업데이트 스플래시"로 보여준다.
+        if (!document.documentElement.classList.contains('admin-login-route')) {
+            var loadingOverlay = document.getElementById('blazor-loading');
+            if (loadingOverlay) loadingOverlay.classList.add('show');
+        }
+    </script>
     <MudThemeProvider @bind-IsDarkMode="isDarkMode" Theme="mudTheme" />
-    <Routes @rendermode="new InteractiveWebAssemblyRenderMode(prerender: false)" />
+    <Routes />
     <script src="/taxbaik/_content/MudBlazor/MudBlazor.min.js"></script>
     <script src="/taxbaik/js/admin-session.js"></script>
     <script src="/taxbaik/_framework/blazor.web.js"></script>

TaxBaik.Web.Client/Components/Admin/Pages/AdminIndex.razor

@@ -1,5 +1,5 @@
 @page "/admin"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @inject NavigationManager NavigationManager
 

TaxBaik.Web.Client/Components/Admin/Pages/Announcements/AnnouncementEdit.razor

@@ -1,6 +1,6 @@
 @page "/admin/announcements/create"
 @page "/admin/announcements/{Id:int}/edit"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Application.DTOs
 @using TaxBaik.Web.Services

TaxBaik.Web.Client/Components/Admin/Pages/Announcements/AnnouncementList.razor

@@ -1,5 +1,5 @@
 @page "/admin/announcements"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @using TaxBaik.Domain.Entities

TaxBaik.Web.Client/Components/Admin/Pages/Blog/BlogCreate.razor

@@ -1,5 +1,5 @@
 @page "/admin/blog/create"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Application.DTOs
 @using TaxBaik.WasmClient.Components.Admin.Pages.Blog

TaxBaik.Web.Client/Components/Admin/Pages/Blog/BlogEdit.razor

@@ -1,5 +1,5 @@
 @page "/admin/blog/{id:int}/edit"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Application.DTOs
 @using TaxBaik.WasmClient.Components.Admin.Pages.Blog

TaxBaik.Web.Client/Components/Admin/Pages/Blog/BlogList.razor

@@ -1,5 +1,5 @@
 @page "/admin/blog"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @inject IBlogBrowserClient BlogClient
 @inject ISnackbar Snackbar

TaxBaik.Web.Client/Components/Admin/Pages/Clients/ClientDetail.razor

@@ -1,5 +1,5 @@
 @page "/admin/clients/{ClientId:int}"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @using TaxBaik.Web.Services.AdminClients

TaxBaik.Web.Client/Components/Admin/Pages/Clients/ClientEdit.razor

@@ -1,6 +1,6 @@
 @page "/admin/clients/create"
 @page "/admin/clients/{Id:int}/edit"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Application.DTOs
 @using TaxBaik.Web.Services

TaxBaik.Web.Client/Components/Admin/Pages/Clients/ClientList.razor

@@ -1,5 +1,5 @@
 @page "/admin/clients"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @using TaxBaik.Domain.Entities

TaxBaik.Web.Client/Components/Admin/Pages/CommonCodes.razor

@@ -1,5 +1,5 @@
 @page "/admin/common-codes"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @using TaxBaik.Web.Services.AdminClients
 @using TaxBaik.Domain.Entities
 @attribute [Authorize]

TaxBaik.Web.Client/Components/Admin/Pages/Companies/CompanyCreate.razor

@@ -1,5 +1,5 @@
 @page "/admin/companies/create"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.WasmClient.Components.Admin.Forms
 @inject IApiClient ApiClient

TaxBaik.Web.Client/Components/Admin/Pages/Companies/CompanyEdit.razor

@@ -1,5 +1,5 @@
 @page "/admin/companies/{id:int}/edit"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.WasmClient.Components.Admin.Forms
 @inject IApiClient ApiClient

TaxBaik.Web.Client/Components/Admin/Pages/Companies/CompanyList.razor

@@ -1,5 +1,5 @@
 @page "/admin/companies"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @inject IApiClient ApiClient
 @inject ISnackbar Snackbar

TaxBaik.Web.Client/Components/Admin/Pages/ConsultingActivities.razor

@@ -1,5 +1,5 @@
 @page "/admin/consulting-activities"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @using TaxBaik.Web.Services.AdminClients
 @using TaxBaik.WasmClient.Components.Admin.Shared
 @inject IConsultingActivityBrowserClient ActivityClient

TaxBaik.Web.Client/Components/Admin/Pages/Contracts.razor

@@ -1,5 +1,5 @@
 @page "/admin/contracts"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @using TaxBaik.Web.Services.AdminClients
 @using TaxBaik.WasmClient.Components.Admin.Shared
 @inject IContractBrowserClient ContractClient

TaxBaik.Web.Client/Components/Admin/Pages/Dashboard.razor

@@ -1,5 +1,5 @@
 @page "/admin/dashboard"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @using TaxBaik.WasmClient.Components.Admin.Shared

TaxBaik.Web.Client/Components/Admin/Pages/Faqs/FaqEdit.razor

@@ -1,6 +1,6 @@
 @page "/admin/faqs/create"
 @page "/admin/faqs/{Id:int}/edit"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @using TaxBaik.Domain.Entities

TaxBaik.Web.Client/Components/Admin/Pages/Faqs/FaqList.razor

@@ -1,5 +1,5 @@
 @page "/admin/faqs"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @using TaxBaik.Domain.Entities

TaxBaik.Web.Client/Components/Admin/Pages/Inquiries/InquiryCreate.razor

@@ -1,5 +1,5 @@
 @page "/admin/inquiries/create"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Application.DTOs
 @using TaxBaik.WasmClient.Components.Admin.Forms

TaxBaik.Web.Client/Components/Admin/Pages/Inquiries/InquiryDetail.razor

@@ -1,5 +1,5 @@
 @page "/admin/inquiries/{InquiryId:int}"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @inject IInquiryBrowserClient InquiryClient

TaxBaik.Web.Client/Components/Admin/Pages/Inquiries/InquiryEdit.razor

@@ -1,5 +1,5 @@
 @page "/admin/inquiries/{id:int}/edit"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Application.DTOs
 @using TaxBaik.WasmClient.Components.Admin.Forms

TaxBaik.Web.Client/Components/Admin/Pages/Inquiries/InquiryList.razor

@@ -1,5 +1,5 @@
 @page "/admin/inquiries"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @inject IInquiryBrowserClient InquiryClient

TaxBaik.Web.Client/Components/Admin/Pages/Login.razor

@@ -1,6 +1,6 @@
 @page "/admin/login"
 @layout TaxBaik.WasmClient.Components.Admin.Layout.BlankLayout
 @attribute [AllowAnonymous]
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: true))
 <PageTitle>로그인</PageTitle>
 <AdminLoginForm />

TaxBaik.Web.Client/Components/Admin/Pages/Logout.razor

@@ -1,5 +1,5 @@
 @page "/admin/logout"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @using TaxBaik.Web.Services
 @inject CustomAuthenticationStateProvider AuthStateProvider
 @inject NavigationManager NavigationManager

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

@@ -1,5 +1,5 @@
 @page "/admin/revenue-trackings"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @using TaxBaik.Web.Services.AdminClients
 @using TaxBaik.WasmClient.Components.Admin.Shared
 @inject IRevenueTrackingBrowserClient RevenueClient

TaxBaik.Web.Client/Components/Admin/Pages/SeasonSimulator.razor

@@ -1,5 +1,5 @@
 @page "/admin/season-simulator"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Application.Seasonal
 @using TaxBaik.Application.Services

TaxBaik.Web.Client/Components/Admin/Pages/Settings/SiteSettings.razor

@@ -1,5 +1,5 @@
 @page "/admin/settings"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using System.ComponentModel.DataAnnotations
 @using System.Collections.Generic

TaxBaik.Web.Client/Components/Admin/Pages/TaxFilingSchedules.razor

@@ -1,5 +1,5 @@
 @page "/admin/tax-filing-schedules"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @using TaxBaik.Web.Services.AdminClients
 @using TaxBaik.Domain.Entities
 @using TaxBaik.WasmClient.Components.Admin.Shared

TaxBaik.Web.Client/Components/Admin/Pages/TaxFilings/TaxFilingList.razor

@@ -1,5 +1,5 @@
 @page "/admin/tax-filings"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @attribute [Authorize]
 @using TaxBaik.Web.Services
 @using TaxBaik.Domain.Entities

TaxBaik.Web.Client/Components/Admin/Pages/TaxProfiles.razor

@@ -1,5 +1,5 @@
 @page "/admin/tax-profiles"
-@rendermode InteractiveWebAssembly
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
 @using TaxBaik.Web.Services.AdminClients
 @using TaxBaik.WasmClient.Components.Admin.Shared
 @inject ITaxProfileBrowserClient TaxProfileClient

TaxBaik.Web.Client/Components/Admin/Routes.razor

@@ -1,7 +1,7 @@
 @namespace TaxBaik.WasmClient.Components.Admin
 @using Microsoft.AspNetCore.Components.Routing
 
-<Router AppAssembly="@typeof(TaxBaik.WasmClient._Imports).Assembly" @rendermode="new InteractiveWebAssemblyRenderMode(prerender: false)">
+<Router AppAssembly="@typeof(TaxBaik.WasmClient._Imports).Assembly">
     <Found Context="routeData">
         <AuthorizeRouteView RouteData="@routeData" DefaultLayout="@typeof(TaxBaik.WasmClient.Components.Admin.Layout.MainLayout)">
             <NotAuthorized>

TaxBaik.Web.Client/Components/Admin/Shared/AdminLoginForm.razor

@@ -28,9 +28,11 @@
             <div class="mud-alert mud-alert-filled-error mb-4 login-error-message" style="display:none;">로그인 중 오류가 발생했습니다.</div>
 
             <button type="submit"
+                    id="admin-login-submit"
+                    disabled
                     class="mud-button-root mud-button mud-button-filled mud-button-filled-primary mud-elevation-0"
                     style="width: 100%; min-height: 52px; border: 0; border-radius: 4px; color: white;">
-                <span>로그인</span>
+                <span>준비 중...</span>
             </button>
         </form>
     </MudPaper>

TaxBaik.Web/Pages/Contact.cshtml

@@ -38,7 +38,7 @@
 
     <form method="post" id="contactForm">
         @Html.AntiForgeryToken()
-        <div asp-validation-summary="ModelOnly" class="text-danger mb-3"></div>
+        <div asp-validation-summary="All" class="text-danger mb-3"></div>
 
         <div class="mb-3">
             <label for="name" class="form-label">이름 <span class="text-danger">*</span></label>
@@ -73,7 +73,7 @@
         </div>
 
         <div class="mb-3 form-check">
-            <input type="checkbox" class="form-check-input" id="agree" name="Agree" required />
+            <input type="checkbox" class="form-check-input" id="agree" name="Agree" value="true" required />
             <label class="form-check-label" for="agree">
                 개인정보 수집·이용에 동의합니다
             </label>

TaxBaik.Web/Services/TelegramInquiryNotificationService.cs

@@ -23,10 +23,12 @@ public class TelegramInquiryNotificationService : IInquiryNotificationService
     public async Task NotifyCreatedAsync(int inquiryId, string name, string phone, string serviceType, string message, string? ipAddress, DateTime createdAtUtc, CancellationToken ct = default)
     {
         var botToken = _configuration["Telegram:BotToken"];
-        var chatId = _configuration["Telegram:ChatId"];
+        var chatId = _configuration["Telegram:InquiryChatId"];
+        if (string.IsNullOrWhiteSpace(chatId))
+            chatId = _configuration["Telegram:ChatId"];
         if (string.IsNullOrWhiteSpace(botToken) || string.IsNullOrWhiteSpace(chatId))
         {
-            _logger.LogWarning("텔레그램 새 문의 알림 설정이 누락되었습니다. Telegram:BotToken 또는 Telegram:ChatId를 확인하세요.");
+            _logger.LogWarning("텔레그램 새 문의 알림 설정이 누락되었습니다. Telegram:BotToken 또는 Telegram:InquiryChatId/ChatId를 확인하세요.");
             return;
         }
 
@@ -80,10 +82,12 @@ public class TelegramInquiryNotificationService : IInquiryNotificationService
     public async Task NotifyStatusChangedAsync(int inquiryId, string name, string phone, string serviceType, string previousStatus, string newStatus, string? changedBy = null, CancellationToken ct = default)
     {
         var botToken = _configuration["Telegram:BotToken"];
-        var chatId = _configuration["Telegram:ChatId"];
+        var chatId = _configuration["Telegram:InquiryChatId"];
+        if (string.IsNullOrWhiteSpace(chatId))
+            chatId = _configuration["Telegram:ChatId"];
         if (string.IsNullOrWhiteSpace(botToken) || string.IsNullOrWhiteSpace(chatId))
         {
-            _logger.LogWarning("텔레그램 상태 변경 알림 설정이 누락되었습니다. Telegram:BotToken 또는 Telegram:ChatId를 확인하세요.");
+            _logger.LogWarning("텔레그램 상태 변경 알림 설정이 누락되었습니다. Telegram:BotToken 또는 Telegram:InquiryChatId/ChatId를 확인하세요.");
             return;
         }
 

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

@@ -239,11 +239,12 @@ window.taxbaikAdminSession = {
         window.addEventListener('hashchange', window.taxbaikAdminSession.syncRouteClass);
 
         if (document.documentElement.classList.contains('admin-login-route')) {
+            // Login prerenders immediately; no boot splash needed.
             window.taxbaikAdminSession.hideLoading();
         }
-
-        // Keep the initial overlay hidden unless explicitly enabled elsewhere.
-        window.taxbaikAdminSession.hideLoading();
+        // Non-login routes: leave the overlay showing until AdminShell's
+        // OnAfterRenderAsync(firstRender) calls hideLoading once WASM has
+        // actually rendered the authenticated shell.
 
         const modal = document.getElementById('components-reconnect-modal');
         if (!modal) return;
@@ -266,6 +267,16 @@ window.taxbaikAdminSession = {
 
         form.dataset.bound = '1';
         window.taxbaikAdminSession.traceUiState('admin-login', 'bindLoginForm attached');
+
+        // 업데이트 스플래시: 제출 핸들러가 실제로 붙기 전까지는 버튼을 "준비 중" 상태로 두고,
+        // 여기서 활성화해 사용자가 로그인 가능 시점을 알 수 있게 한다.
+        const readyButton = form.querySelector('#admin-login-submit');
+        if (readyButton) {
+            readyButton.disabled = false;
+            const label = readyButton.querySelector('span');
+            if (label) label.textContent = '로그인';
+        }
+
         form.addEventListener('submit', async function (event) {
             event.preventDefault();
 

docs/ADMIN_PATTERN_CRITIQUE_WBS.md

@@ -78,6 +78,7 @@ Razor Page/Form
 | P5-01 | CI gate 명문화 | workflow 체크 목록 | 6개 gate 모두 required |
 | P5-02 | 배포본 API smoke 확장 | workflow curl 추가 | Blog/Inquiry create-read-update test 2xx |
 | P5-03 | 운영 회귀 대시보드 | test report/version endpoint | 배포 커밋과 E2E 결과 추적 가능 |
+| P4-03 | 기존 20개+ 어드민 화면을 SmartAdmin 5.5 참조(`legacy/smartadmin/`, `DOUZONE_UX_GUIDE.md`)로 재단장 (2026-07-03 시점 미착수, 향후 별도 진행) | 각 화면의 색상/카드/타이포그래피 갱신 | SmartAdmin 매핑 표 기준 적용 화면 수 / 전체 화면 수 100% |
 
 ## Immediate Refactor Order
 

docs/DOUZONE_UX_GUIDE.md

@@ -65,6 +65,29 @@ ContentSurface
 - 색상은 의미를 유지한다.
 - 동일 상태는 동일 색을 사용한다.
 
+## SmartAdmin 5.5 Design Reference (2026-07-03, 신규 화면부터 적용)
+
+이 섹션은 어드민의 **시각적 스킨**(색상, 카드 크롬, 로그인 화면 스타일, 셸 레이아웃) 기준이다. 위 UX Principles(고밀도, 표준 동선, 더존 정신)는 그대로 유지하고, SmartAdmin 5.5는 그 위에 입히는 룩앤필만 담당한다.
+
+- 소스: `legacy/smartadmin/`(로컬에 이미 포함된 v5.5 HTML/CSS 데모 패키지, Bootstrap 5 기반). 정확한 색상/여백 값이 필요하면 이 디렉터리를 직접 참조한다(추측 금지).
+- 적용 범위: **향후 신규 어드민 화면부터**. 기존 20개+ 화면(Dashboard, Blog, Inquiry, Client 등)은 이번엔 재단장하지 않는다. 기존 화면을 다른 이유로 수정할 때 자연스럽게 이 기준으로 수렴시킨다.
+
+### 매핑 표
+
+| SmartAdmin 5.5 참조 | 파일 | TaxBaik MudBlazor 대응 |
+| --- | --- | --- |
+| 상단 `<header>` 툴바 | `dashboard-control-center.html` | `AdminShell`의 `MudAppBar` |
+| `<aside class="app-sidebar">` (로고 + 필터 입력 + 메뉴) | `dashboard-control-center.html` | `AdminShell`의 `MudDrawer` (검색/필터 입력 포함) |
+| 로그인 카드 (`rounded-4`, 반투명 다크 글래스, `bg-dark bg-opacity-50`) | `auth-login.html` | `AdminLoginForm.razor`의 `MudPaper` 카드 — 반투명/블러 배경 톤 참고 |
+| 색상 팔레트 | `colorpalette.html`, `css/smartapp.min.css` | `App.razor`의 `MudTheme.Palette` (Primary/Secondary/Tertiary 등) |
+| 카드형 위젯 | `dashboard-*.html` | `AdminMetricCard`, `MudPaper` 기반 카드 |
+
+### 적용 규칙
+
+- 새 어드민 화면을 만들 때: 레이아웃/동선/밀도는 `DOUZONE_UX_GUIDE.md` 상단 원칙을 따르고, 색상·카드 모서리·그림자·로그인류 화면의 톤은 `legacy/smartadmin/`을 참조해 `MudTheme`/CSS 변수로 반영한다.
+- SmartAdmin 원본은 jQuery/Bootstrap 5 기반이므로 JS/DOM 구조를 그대로 이식하지 않는다. **시각적 토큰(색, 반경, 여백, 타이포그래피)만** 가져오고, 동작은 MudBlazor 컴포넌트로 구현한다.
+- 기존 화면을 SmartAdmin 스타일로 일괄 재단장하는 작업은 별도 WBS로 `docs/ADMIN_PATTERN_CRITIQUE_WBS.md`에 등록한 뒤 진행한다(이번 범위 아님).
+
 ## Text And Labels
 
 - 라벨은 짧게 쓴다.

scripts/validate_admin_render.sh

@@ -1,57 +1,75 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-# Phase 8: WebAssembly 마이그레이션 - 기능 우선 아키텍처 (2026-07-03)
+# Phase 9: 어드민 페이지별 렌더모드 정상화 (2026-07-03)
 #
-# DESIGN DECISION: prerender: false (not true)
+# DESIGN: Router/Routes에는 렌더모드를 지정하지 않고, 페이지별로 개별 지정한다.
 #
 # RATIONALE:
-# - prerender: true = SSR (Server-Side Rendering) - 서버가 정적 HTML 미리 생성
-# - InteractiveWebAssembly = CSR (Client-Side Rendering) - 클라이언트에서 동적 렌더링
-# - These are contradictory: cannot prerender interactive WebAssembly content
+# - Blazor Web App은 "전역 렌더모드"와 "페이지별 렌더모드" 중 하나만 선택할 수 있다.
+# - Router/Routes에 @rendermode를 지정하면 하위 모든 페이지의 개별 @rendermode는 무시된다.
+# - 로그인만 prerender: true가 필요하고(흰 화면 방지), 나머지 [Authorize] 페이지는
+#   prerender: false가 필요하다(인증 컨텍스트 없이 prerender 시 AuthorizeRouteView가
+#   빈 화면을 그리는 문제를 피하기 위함). 이 둘을 동시에 만족하려면 전역 지정을 버리고
+#   페이지별 지정으로 가야 한다.
 #
-# OBSERVED PROBLEM with prerender: true:
-# 1. Unauthenticated users see prerendered HTML (no auth context)
-# 2. AuthorizeRouteView renders nothing (authorized content cannot prerender)
-# 3. After login, WebAssembly tries to render same component differently
-# 4. Conflict: static prerendered HTML vs. dynamic WASM runtime
-#
-# SOLUTION: prerender: false
-# - App boots to blank screen briefly (WebAssembly loading ~0.5-2s)
-# - After load: all protected pages render correctly with auth
-# - No conflicting render modes
-# - Functional > Performance optimization
-#
-# See CLAUDE.md Phase 8 for architecture details.
+# See CLAUDE.md Phase 9 for architecture details.
 
 app_file="TaxBaik.Web.Client/Components/Admin/App.razor"
+routes_file="TaxBaik.Web.Client/Components/Admin/Routes.razor"
 login_file="TaxBaik.Web.Client/Components/Admin/Pages/Login.razor"
 
-for file in "$app_file" "$login_file"; do
+for file in "$app_file" "$routes_file" "$login_file"; do
   if [ ! -f "$file" ]; then
     echo "Missing admin render file: $file" >&2
     exit 1
   fi
 done
 
-# Require WebAssemblyRenderMode (regardless of prerender value)
-if ! grep -nE "InteractiveWebAssemblyRenderMode" "$app_file" >/dev/null; then
-  echo "Admin shell must use InteractiveWebAssemblyRenderMode." >&2
-  exit 1
-fi
-
-# Reject InteractiveServerRenderMode (Blazor Server architecture forbidden)
-if grep -nE "InteractiveServerRenderMode" "$app_file" >/dev/null; then
+# Reject InteractiveServerRenderMode anywhere (Blazor Server architecture forbidden)
+if grep -rnE "InteractiveServerRenderMode" "$app_file" "$routes_file" >/dev/null; then
   echo "Admin shell must NOT use InteractiveServerRenderMode (Blazor Server)." >&2
   exit 1
 fi
 
-# Login page also requires WebAssembly mode
-# Accept both: @rendermode InteractiveWebAssembly OR @rendermode @(new InteractiveWebAssemblyRenderMode(...))
-if ! grep -nE "InteractiveWebAssembly" "$login_file" >/dev/null; then
-  echo "Login page must use InteractiveWebAssemblyRenderMode or @rendermode InteractiveWebAssembly." >&2
+# Router/Routes must NOT declare a global rendermode boundary.
+# A global rendermode on <Routes> or <Router> overrides every per-page @rendermode
+# directive beneath it, which is exactly the bug this design fixes.
+if grep -nE "@rendermode" "$app_file" >/dev/null; then
+  echo "App.razor's <Routes> must not declare a global @rendermode (breaks per-page prerender control)." >&2
   exit 1
 fi
 
-echo "✅ Admin render harness passed (WebAssembly mode verified)."
-echo "   ℹ️  Note: prerender: false by design (protects @Authorize content from SSR conflicts)"
+if grep -nE "@rendermode" "$routes_file" >/dev/null; then
+  echo "Routes.razor's <Router> must not declare a global @rendermode (breaks per-page prerender control)." >&2
+  exit 1
+fi
+
+# Login page must explicitly prerender (shows the login form in the first HTML response).
+if ! grep -nE "InteractiveWebAssemblyRenderMode\(\s*prerender:\s*true\s*\)" "$login_file" >/dev/null; then
+  echo "Login page must use InteractiveWebAssemblyRenderMode(prerender: true) so the form renders before WASM loads." >&2
+  exit 1
+fi
+
+# Only routable pages (files with a @page directive) need their own render mode.
+# Child components (e.g. BlogForm.razor, FilingTable.razor) inherit the render
+# mode of whichever page hosts them and must NOT declare their own.
+missing_rendermode=0
+while IFS= read -r -d '' page; do
+  [ "$page" = "$login_file" ] && continue
+  if ! grep -qE "^@page " "$page"; then
+    continue
+  fi
+  if ! grep -nE "@rendermode" "$page" >/dev/null; then
+    echo "⚠️  $page has no @rendermode directive (will not be interactive)." >&2
+    missing_rendermode=1
+  fi
+done < <(find TaxBaik.Web.Client/Components/Admin/Pages -name "*.razor" -print0)
+
+if [ "$missing_rendermode" -ne 0 ]; then
+  echo "One or more admin pages are missing an explicit @rendermode directive." >&2
+  exit 1
+fi
+
+echo "✅ Admin render harness passed (per-page render mode verified)."
+echo "   ℹ️  Login: prerender: true (visible before WASM loads). Other pages: WebAssembly-interactive."

tests/e2e/contact-submit.spec.ts

@@ -54,4 +54,25 @@ test.describe('contact submit', () => {
     await navigateInBlazor(page, `${baseUrl}/admin/inquiries`);
     await expect(page.locator('.mud-main-content').getByText('문의 관리').first()).toBeVisible({ timeout: 20_000 });
   });
+
+  test('submitting the public Contact.cshtml form shows the success message', async ({ page }) => {
+    // Regression test: Contact.cshtml's "Agree" checkbox had no value="true", so a
+    // checked box submitted the browser-default "on", which bool model binding
+    // cannot parse. ModelState.IsValid became false and OnPostAsync silently
+    // returned Page() with a blank form and no visible error - the "무한 작성 유도"
+    // bug. This drives the real form through a browser to catch that class of bug.
+    const stamp = Date.now();
+
+    await page.goto(`${baseUrl}/contact`, { waitUntil: 'networkidle' });
+
+    await page.fill('#name', `Contact-E2E-${stamp}`);
+    await page.fill('#phone', '010-1234-5678');
+    await page.fill('#email', `contact-e2e-${stamp}@example.com`);
+    await page.fill('#message', 'Playwright로 Contact.cshtml 폼을 직접 제출한 테스트입니다.');
+    await page.check('#agree');
+    await page.click('button[type="submit"]');
+
+    await expect(page.locator('#contact-success')).toBeVisible({ timeout: 15_000 });
+    await expect(page.locator('#contact-success')).toContainText('접수되었습니다');
+  });
 });

tests/e2e/login-test.spec.ts

@@ -4,6 +4,21 @@ const baseUrl = 'https://www.taxbaik.com/taxbaik';
 const username = 'test_admin';
 const password = 'TestAdmin@123456';
 
+test('Admin Login Page - prerendered HTML contains the form before JS runs', async ({ request }) => {
+  // Login.razor is @rendermode ...(prerender: true), so the raw HTTP response
+  // (no JS execution) must already contain the login form markup. This is the
+  // regression check for the WASM-boot white-screen bug: if Router/Routes ever
+  // regains a global @rendermode, this prerender is silently dropped and this
+  // test catches it without needing a browser.
+  const response = await request.get(`${baseUrl}/admin/login`);
+  expect(response.ok()).toBeTruthy();
+
+  const html = await response.text();
+  expect(html).toContain('name="username"');
+  expect(html).toContain('name="password"');
+  expect(html).toContain('admin-login-form');
+});
+
 test('Admin Login Page - Full Flow Test', async ({ page }) => {
   // 콘솔 에러 캡처
   page.on('console', msg => {