feat(miniapp): refine UI and add utility bill management

- Fix collapsible padding and button spacing
- Add subtotal to balance card
- Add utility bill management for admins
- Fix lints and type checks across the monorepo
- Implement rejectPendingHouseholdMember in repository and service

apps/miniapp/src/index.tsx

@@ -3,6 +3,7 @@ import { QueryClientProvider } from '@tanstack/solid-query'
 import { render } from 'solid-js/web'
 
 import { miniAppQueryClient } from './app/query-client'
+import './theme.css'
 import './index.css'
 import App from './App'