Update pricing model to include half-year pricing and enhance validation

- Introduced a new pricing field, `PricePerConfigPerHalfYear`, to the `PricingSettings` model, allowing for more flexible pricing options.
- Updated the `UpdatePricingSettingsCommand` and its validator to include the new half-year pricing, ensuring proper validation against the quarterly and yearly rates.
- Modified the `PricingSettingsDto` and related frontend components to accommodate the new half-year pricing field, including validation logic to prevent pricing discrepancies.
- Enhanced API documentation and frontend forms to reflect the updated pricing structure and validation rules.

backend/src/PnvPanel.Application/Admin/Pricing/GetPricingSettingsQueryHandler.cs

@@ -20,7 +20,7 @@ public sealed class GetPricingSettingsQueryHandler(IAppDbContext dbContext)
         // Ещё не сидировано/не сохранено ни разу — цена не задана, а не ошибка.
         return Result.Success(
             settings is null
-                ? new PricingSettingsDto(null, null)
+                ? new PricingSettingsDto(null, null, null)
                 : PricingSettingsDto.FromDomain(settings)
         );
     }

backend/src/PnvPanel.Application/Admin/Pricing/PricingSettingsDto.cs

@@ -2,8 +2,16 @@ using PnvPanel.Domain.Pricing;
 
 namespace PnvPanel.Application.Admin.Pricing;
 
-public sealed record PricingSettingsDto(int? PricePerConfigPerQuarter, int? PricePerConfigPerYear)
+public sealed record PricingSettingsDto(
+    int? PricePerConfigPerQuarter,
+    int? PricePerConfigPerHalfYear,
+    int? PricePerConfigPerYear
+)
 {
     public static PricingSettingsDto FromDomain(PricingSettings settings) =>
-        new(settings.PricePerConfigPerQuarter, settings.PricePerConfigPerYear);
+        new(
+            settings.PricePerConfigPerQuarter,
+            settings.PricePerConfigPerHalfYear,
+            settings.PricePerConfigPerYear
+        );
 }

backend/src/PnvPanel.Application/Admin/Pricing/UpdatePricingSettingsCommand.cs

@@ -5,5 +5,6 @@ namespace PnvPanel.Application.Admin.Pricing;
 
 public sealed record UpdatePricingSettingsCommand(
     int? PricePerConfigPerQuarter,
+    int? PricePerConfigPerHalfYear,
     int? PricePerConfigPerYear
 ) : ICommand<Result<PricingSettingsDto>>;

backend/src/PnvPanel.Application/Admin/Pricing/UpdatePricingSettingsCommandHandler.cs

@@ -21,7 +21,11 @@ public sealed class UpdatePricingSettingsCommandHandler(IAppDbContext dbContext)
             dbContext.PricingSettings.Add(settings);
         }
 
-        settings.Update(command.PricePerConfigPerQuarter, command.PricePerConfigPerYear);
+        settings.Update(
+            command.PricePerConfigPerQuarter,
+            command.PricePerConfigPerHalfYear,
+            command.PricePerConfigPerYear
+        );
 
         return Result.Success(PricingSettingsDto.FromDomain(settings));
     }

backend/src/PnvPanel.Application/Admin/Pricing/UpdatePricingSettingsCommandValidator.cs

@@ -10,14 +10,38 @@ public sealed class UpdatePricingSettingsCommandValidator
         RuleFor(x => x.PricePerConfigPerQuarter!.Value)
             .GreaterThanOrEqualTo(0)
             .When(x => x.PricePerConfigPerQuarter.HasValue);
+        RuleFor(x => x.PricePerConfigPerHalfYear!.Value)
+            .GreaterThanOrEqualTo(0)
+            .When(x => x.PricePerConfigPerHalfYear.HasValue);
         RuleFor(x => x.PricePerConfigPerYear!.Value)
             .GreaterThanOrEqualTo(0)
             .When(x => x.PricePerConfigPerYear.HasValue);
 
-        // Обе ставки — цена за конфиг В МЕСЯЦ при соответствующем тарифе оплаты; итог за период =
-        // ставка × число месяцев. Годовая ставка может быть ниже квартальной (скидка за годовую
-        // оплату), но итог за год (ставка×12) не должен быть дешевле итога за квартал (ставка×3) —
-        // иначе выгоднее купить "год" и не продлевать, чем платить за квартал.
+        // Все три ставки — цена за конфиг В МЕСЯЦ при соответствующем тарифе оплаты; итог за период =
+        // ставка × число месяцев. Более длинный период может быть дешевле "в пересчёте на месяц"
+        // (скидка за предоплату), но итог за него не должен быть дешевле итога за более короткий
+        // период — иначе выгоднее купить длинный тариф и не продлевать, чем платить за короткий.
+        RuleFor(x => x.PricePerConfigPerHalfYear)
+            .Must(
+                (command, halfYear) =>
+                    !halfYear.HasValue
+                    || !command.PricePerConfigPerQuarter.HasValue
+                    || (decimal)halfYear.Value * 6 >= (decimal)command.PricePerConfigPerQuarter.Value * 3
+            )
+            .WithMessage("Цена за полгода (в пересчёте на 6 месяцев) не может быть меньше цены за 3 месяца.")
+            .When(x => x.PricePerConfigPerQuarter.HasValue && x.PricePerConfigPerHalfYear.HasValue);
+
+        RuleFor(x => x.PricePerConfigPerYear)
+            .Must(
+                (command, year) =>
+                    !year.HasValue
+                    || !command.PricePerConfigPerHalfYear.HasValue
+                    || (decimal)year.Value * 12 >= (decimal)command.PricePerConfigPerHalfYear.Value * 6
+            )
+            .WithMessage("Цена за год (в пересчёте на 12 месяцев) не может быть меньше цены за полгода.")
+            .When(x => x.PricePerConfigPerHalfYear.HasValue && x.PricePerConfigPerYear.HasValue);
+
+        // Если полугодовая ставка не задана, год всё равно не должен быть дешевле квартала.
         RuleFor(x => x.PricePerConfigPerYear)
             .Must(
                 (command, year) =>
@@ -26,6 +50,10 @@ public sealed class UpdatePricingSettingsCommandValidator
                     || (decimal)year.Value * 12 >= (decimal)command.PricePerConfigPerQuarter.Value * 3
             )
             .WithMessage("Цена за год (в пересчёте на 12 месяцев) не может быть меньше цены за 3 месяца.")
-            .When(x => x.PricePerConfigPerQuarter.HasValue && x.PricePerConfigPerYear.HasValue);
+            .When(x =>
+                !x.PricePerConfigPerHalfYear.HasValue
+                && x.PricePerConfigPerQuarter.HasValue
+                && x.PricePerConfigPerYear.HasValue
+            );
     }
 }

backend/src/PnvPanel.Domain/Pricing/PricingSettings.cs

@@ -12,9 +12,14 @@ public sealed class PricingSettings : Entity
     /// <summary>Цена за конфиг В МЕСЯЦ при оплате раз в 3 месяца (квартальный тариф).</summary>
     public int? PricePerConfigPerQuarter { get; private set; }
 
+    /// <summary>Цена за конфиг В МЕСЯЦ при оплате раз в полгода. Может быть ниже квартальной ставки
+    /// (скидка за оплату на полгода вперёд), но не настолько, чтобы итог за полгода (×6) оказался
+    /// дешевле итога за квартал (×3) — см. UpdatePricingSettingsCommandValidator.</summary>
+    public int? PricePerConfigPerHalfYear { get; private set; }
+
     /// <summary>Цена за конфиг В МЕСЯЦ при оплате раз в год (годовой тариф). Может быть ниже
-    /// квартальной ставки (скидка за годовую оплату), но не настолько, чтобы итог за год (×12)
-    /// оказался дешевле итога за квартал (×3) — см. UpdatePricingSettingsCommandValidator.</summary>
+    /// полугодовой ставки (скидка за годовую оплату), но не настолько, чтобы итог за год (×12)
+    /// оказался дешевле итога за полгода (×6) — см. UpdatePricingSettingsCommandValidator.</summary>
     public int? PricePerConfigPerYear { get; private set; }
 
     public DateTimeOffset UpdatedAt { get; private set; }
@@ -26,9 +31,14 @@ public sealed class PricingSettings : Entity
         return new PricingSettings { Id = Guid.NewGuid(), UpdatedAt = DateTimeOffset.UtcNow };
     }
 
-    public void Update(int? pricePerConfigPerQuarter, int? pricePerConfigPerYear)
+    public void Update(
+        int? pricePerConfigPerQuarter,
+        int? pricePerConfigPerHalfYear,
+        int? pricePerConfigPerYear
+    )
     {
         PricePerConfigPerQuarter = pricePerConfigPerQuarter;
+        PricePerConfigPerHalfYear = pricePerConfigPerHalfYear;
         PricePerConfigPerYear = pricePerConfigPerYear;
         UpdatedAt = DateTimeOffset.UtcNow;
     }

backend/src/PnvPanel.Infrastructure/Persistence/Migrations/20260718171109_AddPricingHalfYear.Designer.cs

@@ -0,0 +1,961 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using PnvPanel.Infrastructure.Persistence;
+
+#nullable disable
+
+namespace PnvPanel.Infrastructure.Persistence.Migrations
+{
+    [DbContext(typeof(AppDbContext))]
+    [Migration("20260718171109_AddPricingHalfYear")]
+    partial class AddPricingHalfYear
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.9")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<System.Guid>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("text");
+
+                    b.Property<Guid>("RoleId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetRoleClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<System.Guid>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("text");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<System.Guid>", b =>
+                {
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProviderKey")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProviderDisplayName")
+                        .HasColumnType("text");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("LoginProvider", "ProviderKey");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserLogins", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<System.Guid>", b =>
+                {
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("RoleId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("UserId", "RoleId");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetUserRoles", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<System.Guid>", b =>
+                {
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Value")
+                        .HasColumnType("text");
+
+                    b.HasKey("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("AspNetUserTokens", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Activation.ActivationRequest", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Comment")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTimeOffset?>("DecidedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid?>("DecidedBy")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("RejectionReason")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId", "Status");
+
+                    b.ToTable("ActivationRequests", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Apps.ClientApp", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Description")
+                        .HasMaxLength(300)
+                        .HasColumnType("character varying(300)");
+
+                    b.Property<string>("DownloadUrl")
+                        .IsRequired()
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<string>("IconUrl")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsRecommended")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("OperatingSystem")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<int>("SortOrder")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("ClientApps", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Audit.AuditLog", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
+
+                    b.Property<string>("Action")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<Guid?>("ActorId")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Metadata")
+                        .HasColumnType("jsonb");
+
+                    b.Property<string>("Source")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("TargetId")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("TargetType")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedAt");
+
+                    b.ToTable("AuditLogs", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Configs.TrafficSample", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
+
+                    b.Property<Guid>("ConfigId")
+                        .HasColumnType("uuid");
+
+                    b.Property<long>("DownBytes")
+                        .HasColumnType("bigint");
+
+                    b.Property<DateTimeOffset>("Timestamp")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<long>("UpBytes")
+                        .HasColumnType("bigint");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ConfigId", "Timestamp");
+
+                    b.ToTable("TrafficSamples", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Configs.VpnConfig", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("ClientEmail")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<string>("ClientExternalId")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTimeOffset?>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("InboundId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Label")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<DateTimeOffset?>("LastSyncAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Protocol")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("SubscriptionToken")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<long>("UsedDownBytes")
+                        .HasColumnType("bigint");
+
+                    b.Property<long>("UsedUpBytes")
+                        .HasColumnType("bigint");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("InboundId");
+
+                    b.HasIndex("SubscriptionToken")
+                        .IsUnique();
+
+                    b.HasIndex("UserId", "Status");
+
+                    b.ToTable("VpnConfigs", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Inbounds.Inbound", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.PrimitiveCollection<Guid[]>("AllowedRoleIds")
+                        .IsRequired()
+                        .HasColumnType("uuid[]");
+
+                    b.Property<string>("DisplayName")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<bool>("IsPublished")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTimeOffset?>("LastSyncAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("NodeId")
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("Port")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Protocol")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("Remark")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<string>("RemoteInboundId")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NodeId", "RemoteInboundId")
+                        .IsUnique();
+
+                    b.ToTable("Inbounds", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Instructions.InstructionIntro", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Body")
+                        .IsRequired()
+                        .HasMaxLength(20000)
+                        .HasColumnType("character varying(20000)");
+
+                    b.Property<DateTimeOffset>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("InstructionIntros", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Instructions.InstructionTab", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Body")
+                        .IsRequired()
+                        .HasMaxLength(20000)
+                        .HasColumnType("character varying(20000)");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("SortOrder")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<DateTimeOffset?>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SortOrder");
+
+                    b.ToTable("InstructionTabs", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.News.NewsPost", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Body")
+                        .IsRequired()
+                        .HasMaxLength(20000)
+                        .HasColumnType("character varying(20000)");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateTimeOffset?>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedAt");
+
+                    b.ToTable("NewsPosts", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Nodes.Node", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("BaseAddress")
+                        .IsRequired()
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTimeOffset?>("LastSyncAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Location")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Nodes", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Pricing.PricingSettings", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<int?>("PricePerConfigPerHalfYear")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("PricePerConfigPerQuarter")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("PricePerConfigPerYear")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTimeOffset>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PricingSettings", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Support.SupportTicket", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int?>("ProposedMaxConfigs")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("ProposedMaxIpLimit")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("ProposedRoleName")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<Guid?>("RequestedRoleId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("Type")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Type", "Status");
+
+                    b.HasIndex("UserId", "Status");
+
+                    b.ToTable("SupportTickets", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Support.TicketAttachment", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("CommentId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("ContentType")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("FileName")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)");
+
+                    b.Property<long>("SizeBytes")
+                        .HasColumnType("bigint");
+
+                    b.Property<string>("StoredFileName")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CommentId");
+
+                    b.HasIndex("StoredFileName")
+                        .IsUnique();
+
+                    b.ToTable("TicketAttachments", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Support.TicketComment", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("AuthorId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Body")
+                        .IsRequired()
+                        .HasMaxLength(4000)
+                        .HasColumnType("character varying(4000)");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("TicketId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TicketId", "CreatedAt");
+
+                    b.ToTable("TicketComments", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Telegram.TelegramLinkToken", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTimeOffset?>("ConsumedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTimeOffset>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Token")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Token")
+                        .IsUnique();
+
+                    b.ToTable("TelegramLinkTokens", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Telegram.TelegramLoginRequest", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Context")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTimeOffset>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<Guid?>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("TelegramLoginRequests", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Infrastructure.Identity.AppRole", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsSystem")
+                        .HasColumnType("boolean");
+
+                    b.Property<int>("MaxConfigs")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("MaxIpLimit")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .IsUnique()
+                        .HasDatabaseName("RoleNameIndex");
+
+                    b.ToTable("AspNetRoles", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Infrastructure.Identity.AppUser", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("AccessFailedCount")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTimeOffset?>("ActivatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid?>("ActivatedBy")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<bool>("EmailConfirmed")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsActivated")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsBlocked")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("LockoutEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("PasswordHash")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("PhoneNumberConfirmed")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SecurityStamp")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SubscriptionToken")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTimeOffset?>("TelegramLinkedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<long?>("TelegramUserId")
+                        .HasColumnType("bigint");
+
+                    b.Property<string>("TelegramUsername")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("TwoFactorEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasDatabaseName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .IsUnique()
+                        .HasDatabaseName("UserNameIndex");
+
+                    b.HasIndex("SubscriptionToken")
+                        .IsUnique();
+
+                    b.HasIndex("TelegramUserId")
+                        .IsUnique();
+
+                    b.ToTable("AspNetUsers", (string)null);
+                });
+
+            modelBuilder.Entity("PnvPanel.Infrastructure.Identity.RefreshToken", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTimeOffset>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("ReplacedByTokenHash")
+                        .HasColumnType("text");
+
+                    b.Property<DateTimeOffset?>("RevokedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("TokenHash")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TokenHash")
+                        .IsUnique();
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("RefreshTokens", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<System.Guid>", b =>
+                {
+                    b.HasOne("PnvPanel.Infrastructure.Identity.AppRole", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<System.Guid>", b =>
+                {
+                    b.HasOne("PnvPanel.Infrastructure.Identity.AppUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<System.Guid>", b =>
+                {
+                    b.HasOne("PnvPanel.Infrastructure.Identity.AppUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<System.Guid>", b =>
+                {
+                    b.HasOne("PnvPanel.Infrastructure.Identity.AppRole", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("PnvPanel.Infrastructure.Identity.AppUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<System.Guid>", b =>
+                {
+                    b.HasOne("PnvPanel.Infrastructure.Identity.AppUser", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("PnvPanel.Domain.Nodes.Node", b =>
+                {
+                    b.OwnsOne("PnvPanel.Domain.Nodes.NodeCredentials", "Credentials", b1 =>
+                        {
+                            b1.Property<Guid>("NodeId")
+                                .HasColumnType("uuid");
+
+                            b1.Property<string>("ProtectedPassword")
+                                .IsRequired()
+                                .HasColumnType("text")
+                                .HasColumnName("CredentialsProtectedPassword");
+
+                            b1.Property<string>("Username")
+                                .IsRequired()
+                                .HasMaxLength(200)
+                                .HasColumnType("character varying(200)")
+                                .HasColumnName("CredentialsUsername");
+
+                            b1.HasKey("NodeId");
+
+                            b1.ToTable("Nodes");
+
+                            b1.WithOwner()
+                                .HasForeignKey("NodeId");
+                        });
+
+                    b.Navigation("Credentials")
+                        .IsRequired();
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

backend/src/PnvPanel.Infrastructure/Persistence/Migrations/20260718171109_AddPricingHalfYear.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace PnvPanel.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddPricingHalfYear : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "PricePerConfigPerHalfYear",
+                table: "PricingSettings",
+                type: "integer",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "PricePerConfigPerHalfYear",
+                table: "PricingSettings");
+        }
+    }
+}

backend/src/PnvPanel.Infrastructure/Persistence/Migrations/AppDbContextModelSnapshot.cs

@@ -519,6 +519,9 @@ namespace PnvPanel.Infrastructure.Persistence.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("uuid");
 
+                    b.Property<int?>("PricePerConfigPerHalfYear")
+                        .HasColumnType("integer");
+
                     b.Property<int?>("PricePerConfigPerQuarter")
                         .HasColumnType("integer");