Add business dashboard dark mode from Super Admin theme setting.

Login and in-app surfaces follow tenant themeMode, matching customer dark tokens, with themed switches and tighter card/table chrome.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/business/src/App.tsx

@@ -79,11 +79,11 @@ function App() {
   return (
     <BusinessDomainGuard>
     <LocaleProvider>
+    <BusinessThemeProvider>
     <BrowserRouter>
       <TenantBrandingProvider>
         <DashboardDocumentTitle />
       <AuthProvider>
-        <BusinessThemeProvider>
           <ToastProvider>
           <Routes>
           <Route element={<GuestRoute />}>
@@ -170,10 +170,10 @@ function App() {
           </Route>
         </Routes>
         </ToastProvider>
-        </BusinessThemeProvider>
       </AuthProvider>
       </TenantBrandingProvider>
     </BrowserRouter>
+    </BusinessThemeProvider>
     </LocaleProvider>
     </BusinessDomainGuard>
   )