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/bot/src/dm-assistant.test.ts

@@ -261,6 +261,7 @@ function createHouseholdRepository(): HouseholdConfigurationRepository {
     ],
     listPendingHouseholdMembers: async () => [],
     approvePendingHouseholdMember: async () => null,
+    rejectPendingHouseholdMember: async () => false,
     updateHouseholdDefaultLocale: async () => household,
     updateMemberPreferredLocale: async () => null,
     updateHouseholdMemberDisplayName: async () => null,