feat: full FrontOffice updates - discount store, blog, payment gateway, UI improvements

- Discount store pages (products, cart, orders, order detail)
- Blog pages and services
- Payment gateway callback page
- AppImage component, EmptyState, LoadingState, PageHeader
- DiscountCartService, DiscountOrderService, DiscountProductService
- BlogCategoryService, BlogPostService, SitePageService, ImageCacheService
- PhoneVerifyForm component
- Profile Hub page
- UI/UX improvements across all pages
- landing.js for homepage
- Config and routing updates

src/FrontOffice.Main/Pages/Profile/Components/OrganizationChartLevel.razor

@@ -9,9 +9,9 @@
                     @if (!string.IsNullOrWhiteSpace(node.Avatar))
                     {
                         <MudAvatar Size="@GetAvatarSize(Level)">
-                            <MudImage ObjectFit="ObjectFit.Cover"
-                                      ObjectPosition="ObjectPosition.Center"
-                                      Src="@node.Avatar" />
+                            <AppImage Path="@node.Avatar"
+                                      ObjectFit="ObjectFit.Cover"
+                                      ObjectPosition="ObjectPosition.Center" />
                         </MudAvatar>
                     }
                     else