feat(web): foundation com brand JCS + AntD theme + Rafael painel placeholder

- Design tokens (CSS variables) espelhando brand.md v1.0:
  - Paleta JCS Blue #004a99 + estados funcionais
  - Plus Jakarta Sans Variable self-host (LGPD + perf)
  - Radius 12/20, sombra 0 4px 25px rgba(0,0,0,0.05)
  - Layout topbar 80 + sidebar 260 (brand.md canon)
- AntD ConfigProvider com tema JCS (cores, fonts, radius, shadow, motion)
- TanStack Router + Query setup com defaults conservadores
- AppShell desktop (Topbar + Sidebar) com tom canônico
- RafaelPainel placeholder com vocabulário canônico:
  meta de maio, clientes esfriando (OPENFRIOS 47 dias), próxima visita,
  comissão+FLEX, copy direta apple-inspired
- Logos copiadas para apps/web/public/
- Limpeza: removidos placeholders Nx (app.tsx, nx-welcome.tsx, styles.css)
- pt-BR locale (dayjs + AntD)
- Build OK: 878KB JS (vai code-splitar pós cockpits separados)

Refs: brand.md, design-artifacts/A-Product-Brief/03-visual-direction.md,
      design-artifacts/B-Trigger-Map/personas/02-rafael-representante.md

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/web/src/main.tsx

@@ -1,11 +1,33 @@
 import { StrictMode } from 'react';
-import * as ReactDOM from 'react-dom/client';
-import App from './app/app';
+import { createRoot } from 'react-dom/client';
+import { ConfigProvider, App as AntdApp } from 'antd';
+import ptBR from 'antd/locale/pt_BR';
+import { QueryClientProvider } from '@tanstack/react-query';
+import { RouterProvider } from '@tanstack/react-router';
+import dayjs from 'dayjs';
+import 'dayjs/locale/pt-br';
 
-const root = ReactDOM.createRoot(document.getElementById('root') as HTMLElement);
+import './styles/global.css';
 
-root.render(
+import { sarTheme } from './lib/theme';
+import { queryClient } from './lib/query-client';
+import { router } from './lib/router';
+
+dayjs.locale('pt-br');
+
+const rootEl = document.getElementById('root');
+if (!rootEl) {
+  throw new Error('Root element not found');
+}
+
+createRoot(rootEl).render(
   <StrictMode>
-    <App />
+    <ConfigProvider theme={sarTheme} locale={ptBR} componentSize="middle">
+      <AntdApp>
+        <QueryClientProvider client={queryClient}>
+          <RouterProvider router={router} />
+        </QueryClientProvider>
+      </AntdApp>
+    </ConfigProvider>
   </StrictMode>,
 );