feat: Display Settings UI + Company Category/Type sync

- Add /admin/display-settings page with Kiosk and Mobile sections
- Company category checkbox filter + excluded companies searchable multi-select
- New DB tables: company_categories, company_types (migration 064)
- Sync COMPANY_CATEGORIES via CompanyCategories entity (id/name/isActive)
- Sync COMPANY_TYPES via Companies.companyType picklist
- Add to EntityType, ENTITY_DEPENDENCIES, sync-helpers, entity-mapper, entity-sync
- New API routes: /api/admin/display-settings (GET/POST), /api/data/company-categories, /api/data/companies-list
- Update all 4 routes (kiosk/stats, kiosk/activity, mobile/tickets, mobile/dashboard)
  to filter by kiosk_settings company_category_ids + excluded_company_ids
- Add Display Settings nav link (SlidersHorizontal icon) to Admin menu
- Seed kiosk_settings: kiosk_company_category_ids=1, mobile_company_category_ids=1

components/navigation/app-navigation.tsx

@@ -26,6 +26,7 @@ import {
   Sun,
   BarChart3,
   DollarSign,
+  SlidersHorizontal,
 } from 'lucide-react';
 import {
   NavigationMenu,
@@ -179,6 +180,12 @@ const navigationItems: NavItem[] = [
         icon: DollarSign,
         description: 'Sync invoices, payments, deposits, transactions and financial reports'
       },
+      {
+        title: 'Display Settings',
+        href: '/admin/display-settings',
+        icon: SlidersHorizontal,
+        description: 'Configure company filters for Kiosk and Mobile dashboards'
+      },
       {
         title: 'Data Browser',
         href: '/admin/data-browser',