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/services/tenantService.ts

@@ -1,6 +1,7 @@
 import { apiRequest } from '../lib/api'
 import type { DashboardLocale } from '@meshkee/dashboard-core'
 import type { BusinessPrimaryColorId } from '../utils/businessPrimaryColors'
+import type { DashboardThemeMode } from '../utils/applyBusinessTheme'
 import type { BusinessModuleId, HomeChartId } from '../utils/businessModules'
 
 export interface ResolvedTenant {
@@ -11,10 +12,12 @@ export interface ResolvedTenant {
   domain: string
   primaryColor: BusinessPrimaryColorId
   defaultLocale?: DashboardLocale
+  themeMode?: DashboardThemeMode
   enabledModules?: BusinessModuleId[]
   homeCharts?: [HomeChartId, HomeChartId]
   specialProductsSource?: 'product' | 'store_item'
   logoUrl?: string | null
+  logoDarkUrl?: string | null
   faviconUrl?: string | null
 }