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/Shared/PhoneVerifyForm.razor.cs

@@ -0,0 +1,42 @@
+using CMSMicroservice.Protobuf.Protos.User;
+using Microsoft.AspNetCore.Components;
+using MudBlazor;
+using static FrontOffice.Main.Shared.AuthDialog;
+
+namespace FrontOffice.Main.Shared;
+
+public partial class PhoneVerifyForm
+{
+    // ── Step state ──
+    [Parameter, EditorRequired] public AuthStep CurrentStep { get; set; }
+
+    // ── Phone step ──
+    [Parameter, EditorRequired] public CreateNewOtpTokenRequest PhoneRequest { get; set; } = default!;
+
+    // ── Verify step ──
+    [Parameter, EditorRequired] public VerifyOtpTokenRequest VerifyRequest { get; set; } = default!;
+
+    // ── Captcha ──
+    [Parameter] public string? CaptchaCode { get; set; }
+    [Parameter] public string? CaptchaInput { get; set; }
+    [Parameter] public EventCallback<string?> CaptchaInputChanged { get; set; }
+    [Parameter] public EventCallback OnRefreshCaptcha { get; set; }
+
+    // ── Shared state ──
+    [Parameter] public bool IsBusy { get; set; }
+    [Parameter] public string? ErrorMessage { get; set; }
+    [Parameter] public string? InfoMessage { get; set; }
+    [Parameter] public string? PhoneNumber { get; set; }
+    [Parameter] public int ResendRemaining { get; set; }
+
+    // ── Verify actions ──
+    [Parameter] public EventCallback OnChangePhone { get; set; }
+    [Parameter] public EventCallback OnResendOtp { get; set; }
+
+    // ── Internal form refs (exposed via public methods) ──
+    private MudForm? _phoneForm;
+    private MudForm? _verifyForm;
+
+    public MudForm? GetPhoneForm() => _phoneForm;
+    public MudForm? GetVerifyForm() => _verifyForm;
+}