feat(demands): оптовая отгрузка контрагенту-юрлицу (P1-5)

Domain Demand+DemandLine - зеркалит RetailSale, но всегда с CustomerId
(обязателен, не nullable), способ оплаты DemandPayment с Credit
(постоплата = дебиторка), без RetailPoint/Cashier.

EF + миграция Phase8a_Demands (idempotent CREATE TABLE).
Контроллер api/sales/demands - CRUD + Post/Unpost. Post создаёт
StockMovement тип WholesaleSale с -Quantity; защита от ухода в минус
(409 со списком конфликтов). Unpost возвращает товар.

ApplyLines пишет в DbSet напрямую (не через nav-collection) и Update
использует ExecuteDelete для старых строк - тот же fix-паттерн что в
RetailSalesController (избегает DbUpdateConcurrency на client-side Id).

Permissions переиспользуют DemandsEdit/DemandsPost (уже в RolePermissions).
Метрики observability: food_market_documents_posted_total{type="demand"}
и documents_error_total{type="demand", reason="serialization"}.

Web: /sales/demands (list+edit) с AsyncSelect контрагентов, способом
оплаты включая Credit, PaidAmount-полем для дебиторки. Сайдбар:
"Оптовые отгрузки" в группе Продажи для Admin.

Тесты: 3 интеграционных (post снижает stock + unpost восстанавливает,
over-stock posting -> 409 без побочных эффектов, tenant-изоляция).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/food-market.api/Controllers/Sales/DemandsController.cs

@@ -0,0 +1,402 @@
+using System.ComponentModel.DataAnnotations;
+using foodmarket.Application.Common;
+using foodmarket.Application.Inventory;
+using foodmarket.Domain.Inventory;
+using foodmarket.Domain.Sales;
+using foodmarket.Infrastructure.Persistence;
+using foodmarket.Api.Infrastructure.Authorization;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace foodmarket.Api.Controllers.Sales;
+
+/// <summary>Оптовая отгрузка (Demand). Списывает товар со склада в адрес
+/// юрлица-контрагента. Зеркалит <see cref="RetailSalesController"/>, но
+/// без RetailPoint/Cashier и с другим способом оплаты (Credit вместо Mixed/Bonus).
+/// Множ. возвратов нет в MVP — учётный шаг без подтверждения дебиторки.</summary>
+[ApiController]
+[Authorize]
+[Route("api/sales/demands")]
+public class DemandsController : ControllerBase
+{
+    private readonly AppDbContext _db;
+    private readonly IStockService _stock;
+
+    public DemandsController(AppDbContext db, IStockService stock)
+    {
+        _db = db;
+        _stock = stock;
+    }
+
+    public record DemandListRow(
+        Guid Id, string Number, DateTime Date, DemandStatus Status,
+        Guid CustomerId, string CustomerName,
+        Guid StoreId, string StoreName,
+        Guid CurrencyId, string CurrencyCode,
+        decimal Total, decimal PaidAmount,
+        DemandPayment Payment, int LineCount,
+        DateTime? PostedAt);
+
+    public record DemandLineDto(
+        Guid? Id, Guid ProductId, string? ProductName, string? ProductArticle, string? UnitSymbol,
+        decimal Quantity, decimal UnitPrice, decimal Discount, decimal LineTotal,
+        decimal VatPercent, int SortOrder,
+        decimal? StockAtStore);
+
+    public record DemandDto(
+        Guid Id, string Number, DateTime Date, DemandStatus Status,
+        Guid CustomerId, string CustomerName,
+        Guid StoreId, string StoreName,
+        Guid CurrencyId, string CurrencyCode,
+        DemandPayment Payment, decimal Subtotal, decimal DiscountTotal,
+        decimal Total, decimal PaidAmount,
+        string? Notes, DateTime? PostedAt,
+        IReadOnlyList<DemandLineDto> Lines);
+
+    public record DemandLineInput(
+        Guid ProductId,
+        [Range(0, 1e10)] decimal Quantity,
+        [Range(0, 1e10)] decimal UnitPrice,
+        [Range(0, 1e10)] decimal Discount,
+        [Range(0, 100)] decimal VatPercent);
+
+    public record DemandInput(
+        DateTime Date,
+        Guid CustomerId, Guid StoreId, Guid CurrencyId,
+        DemandPayment Payment,
+        [Range(0, 1e10)] decimal PaidAmount,
+        string? Notes,
+        IReadOnlyList<DemandLineInput> Lines);
+
+    [HttpGet]
+    public async Task<ActionResult<PagedResult<DemandListRow>>> List(
+        [FromQuery] PagedRequest req,
+        [FromQuery] DemandStatus? status,
+        [FromQuery] Guid? customerId,
+        [FromQuery] Guid? storeId,
+        CancellationToken ct)
+    {
+        var q = from d in _db.Demands.AsNoTracking()
+                join cp in _db.Counterparties on d.CustomerId equals cp.Id
+                join st in _db.Stores on d.StoreId equals st.Id
+                join cu in _db.Currencies on d.CurrencyId equals cu.Id
+                select new { d, cp, st, cu };
+
+        if (status is not null) q = q.Where(x => x.d.Status == status);
+        if (customerId is not null) q = q.Where(x => x.d.CustomerId == customerId);
+        if (storeId is not null) q = q.Where(x => x.d.StoreId == storeId);
+        if (!string.IsNullOrWhiteSpace(req.Search))
+        {
+            var s = req.Search.Trim().ToLower();
+            q = q.Where(x => x.d.Number.ToLower().Contains(s) || x.cp.Name.ToLower().Contains(s));
+        }
+
+        var total = await q.CountAsync(ct);
+        q = (req.Sort, req.Desc) switch
+        {
+            ("number", false) => q.OrderBy(x => x.d.Number),
+            ("number", true) => q.OrderByDescending(x => x.d.Number),
+            ("customer", false) => q.OrderBy(x => x.cp.Name).ThenByDescending(x => x.d.Date),
+            ("customer", true) => q.OrderByDescending(x => x.cp.Name).ThenByDescending(x => x.d.Date),
+            ("status", false) => q.OrderBy(x => x.d.Status).ThenByDescending(x => x.d.Date),
+            ("status", true) => q.OrderByDescending(x => x.d.Status).ThenByDescending(x => x.d.Date),
+            ("total", false) => q.OrderBy(x => x.d.Total).ThenByDescending(x => x.d.Date),
+            ("total", true) => q.OrderByDescending(x => x.d.Total).ThenByDescending(x => x.d.Date),
+            ("date", false) => q.OrderBy(x => x.d.Date).ThenBy(x => x.d.Number),
+            _ => q.OrderByDescending(x => x.d.Date).ThenByDescending(x => x.d.Number),
+        };
+        var items = await q.Skip(req.Skip).Take(req.Take)
+            .Select(x => new DemandListRow(
+                x.d.Id, x.d.Number, x.d.Date, x.d.Status,
+                x.cp.Id, x.cp.Name,
+                x.st.Id, x.st.Name,
+                x.cu.Id, x.cu.Code,
+                x.d.Total, x.d.PaidAmount, x.d.Payment, x.d.Lines.Count,
+                x.d.PostedAt))
+            .ToListAsync(ct);
+
+        return new PagedResult<DemandListRow> { Items = items, Total = total, Page = req.Page, PageSize = req.Take };
+    }
+
+    [HttpGet("{id:guid}")]
+    public async Task<ActionResult<DemandDto>> Get(Guid id, CancellationToken ct)
+    {
+        var dto = await GetInternal(id, ct);
+        return dto is null ? NotFound() : Ok(dto);
+    }
+
+    [HttpPost, RequiresPermission("DemandsEdit")]
+    public async Task<ActionResult<DemandDto>> Create([FromBody] DemandInput input, CancellationToken ct)
+    {
+        if (RequiredGuid.FirstMissing(
+                (nameof(input.CustomerId), input.CustomerId),
+                (nameof(input.StoreId), input.StoreId),
+                (nameof(input.CurrencyId), input.CurrencyId)) is { } missing)
+            return BadRequest(new { error = $"Поле {missing} обязательно.", field = missing });
+        if (input.Lines is null || input.Lines.Count == 0)
+            return BadRequest(new { error = "Отгрузка должна содержать хотя бы одну позицию." });
+
+        var number = await GenerateNumberAsync(input.Date, ct);
+        var demand = new Demand
+        {
+            Number = number,
+            Date = input.Date,
+            Status = DemandStatus.Draft,
+            CustomerId = input.CustomerId,
+            StoreId = input.StoreId,
+            CurrencyId = input.CurrencyId,
+            Payment = input.Payment,
+            PaidAmount = input.PaidAmount,
+            Notes = input.Notes,
+        };
+        ApplyLines(demand, input.Lines);
+        _db.Demands.Add(demand);
+        if (await SaveOrFkErrorAsync(ct) is { } err) return err;
+        var dto = await GetInternal(demand.Id, ct);
+        return CreatedAtAction(nameof(Get), new { id = demand.Id }, dto);
+    }
+
+    private async Task<ActionResult?> SaveOrFkErrorAsync(CancellationToken ct)
+    {
+        try
+        {
+            await _db.SaveChangesAsync(ct);
+            return null;
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is Npgsql.PostgresException pg && pg.SqlState == "23503")
+        {
+            var name = pg.ConstraintName ?? "";
+            string field = name.Contains("Customer") ? "customerId"
+                         : name.Contains("Store") ? "storeId"
+                         : name.Contains("Currency") ? "currencyId"
+                         : name.Contains("Product") ? "productId"
+                         : "(unknown)";
+            return BadRequest(new { error = $"Связанная запись не найдена: {field}.", field, constraint = name });
+        }
+    }
+
+    [HttpPut("{id:guid}"), RequiresPermission("DemandsEdit")]
+    public async Task<IActionResult> Update(Guid id, [FromBody] DemandInput input, CancellationToken ct)
+    {
+        if (RequiredGuid.FirstMissing(
+                (nameof(input.CustomerId), input.CustomerId),
+                (nameof(input.StoreId), input.StoreId),
+                (nameof(input.CurrencyId), input.CurrencyId)) is { } missing)
+            return BadRequest(new { error = $"Поле {missing} обязательно.", field = missing });
+        if (input.Lines is null || input.Lines.Count == 0)
+            return BadRequest(new { error = "Отгрузка должна содержать хотя бы одну позицию." });
+
+        var demand = await _db.Demands.FirstOrDefaultAsync(d => d.Id == id, ct);
+        if (demand is null) return NotFound();
+        if (demand.Status != DemandStatus.Draft)
+            return Conflict(new { error = "Только черновик может быть изменён. Сначала отмени проведение." });
+
+        demand.Date = input.Date;
+        demand.CustomerId = input.CustomerId;
+        demand.StoreId = input.StoreId;
+        demand.CurrencyId = input.CurrencyId;
+        demand.Payment = input.Payment;
+        demand.PaidAmount = input.PaidAmount;
+        demand.Notes = input.Notes;
+
+        // Удаляем старые строки через ExecuteDelete (минует трекер), добавляем новые
+        // напрямую в DbSet — тот же паттерн что в RetailSale.Update (см. P1-8 fix).
+        await _db.DemandLines.Where(l => l.DemandId == demand.Id).ExecuteDeleteAsync(ct);
+        ApplyLines(demand, input.Lines);
+
+        if (await SaveOrFkErrorAsync(ct) is { } err) return err;
+        return NoContent();
+    }
+
+    [HttpDelete("{id:guid}"), RequiresPermission("DemandsEdit")]
+    public async Task<IActionResult> Delete(Guid id, CancellationToken ct)
+    {
+        var demand = await _db.Demands.FirstOrDefaultAsync(d => d.Id == id, ct);
+        if (demand is null) return NotFound();
+        if (demand.Status != DemandStatus.Draft)
+            return Conflict(new { error = "Нельзя удалить проведённый документ. Сначала отмени проведение." });
+        _db.Demands.Remove(demand);
+        await _db.SaveChangesAsync(ct);
+        return NoContent();
+    }
+
+    [HttpPost("{id:guid}/post"), RequiresPermission("DemandsPost")]
+    public async Task<IActionResult> Post(Guid id, CancellationToken ct)
+    {
+        var demand = await _db.Demands.Include(d => d.Lines).FirstOrDefaultAsync(d => d.Id == id, ct);
+        if (demand is null) return NotFound();
+        if (demand.Status == DemandStatus.Posted) return Conflict(new { error = "Документ уже проведён." });
+        if (demand.Lines.Count == 0) return BadRequest(new { error = "Нельзя провести документ без строк." });
+
+        // Защита от ухода в минус.
+        var byProduct = demand.Lines.GroupBy(l => l.ProductId)
+            .Select(g => new { ProductId = g.Key, Qty = g.Sum(x => x.Quantity) }).ToList();
+        var productIds = byProduct.Select(x => x.ProductId).ToList();
+        var stocks = await _db.Stocks
+            .Where(s => s.StoreId == demand.StoreId && productIds.Contains(s.ProductId))
+            .ToDictionaryAsync(s => s.ProductId, s => s.Quantity, ct);
+        var conflicts = new List<object>();
+        foreach (var x in byProduct)
+        {
+            stocks.TryGetValue(x.ProductId, out var avail);
+            if (avail < x.Qty)
+            {
+                var name = await _db.Products.Where(p => p.Id == x.ProductId).Select(p => p.Name).FirstOrDefaultAsync(ct);
+                conflicts.Add(new
+                {
+                    productId = x.ProductId, productName = name,
+                    requested = x.Qty, available = avail,
+                });
+            }
+        }
+        if (conflicts.Count > 0)
+            return Conflict(new { error = "Недостаточно остатка для проведения отгрузки.", lines = conflicts });
+
+        await using var tx = await _db.Database.BeginTransactionAsync(
+            System.Data.IsolationLevel.Serializable, ct);
+
+        foreach (var line in demand.Lines)
+        {
+            await _stock.ApplyMovementAsync(new StockMovementDraft(
+                ProductId: line.ProductId,
+                StoreId: demand.StoreId,
+                Quantity: -line.Quantity,
+                Type: MovementType.WholesaleSale,
+                DocumentType: "demand",
+                DocumentId: demand.Id,
+                DocumentNumber: demand.Number,
+                UnitCost: line.UnitPrice,
+                OccurredAt: demand.Date), ct);
+        }
+
+        demand.Status = DemandStatus.Posted;
+        demand.PostedAt = DateTime.UtcNow;
+        try
+        {
+            await _db.SaveChangesAsync(ct);
+            await tx.CommitAsync(ct);
+        }
+        catch (Exception ex) when (IsSerializationConflict(ex))
+        {
+            foodmarket.Api.Infrastructure.Observability.AppMetrics.IncrementError("demand", "serialization");
+            return Conflict(new { error = "Документ проводится параллельно. Повторите попытку." });
+        }
+        foodmarket.Api.Infrastructure.Observability.AppMetrics.IncrementPosted("demand");
+        return NoContent();
+    }
+
+    [HttpPost("{id:guid}/unpost"), RequiresPermission("DemandsPost")]
+    public async Task<IActionResult> Unpost(Guid id, CancellationToken ct)
+    {
+        var demand = await _db.Demands.Include(d => d.Lines).FirstOrDefaultAsync(d => d.Id == id, ct);
+        if (demand is null) return NotFound();
+        if (demand.Status != DemandStatus.Posted) return Conflict(new { error = "Документ не проведён." });
+
+        foreach (var line in demand.Lines)
+        {
+            await _stock.ApplyMovementAsync(new StockMovementDraft(
+                ProductId: line.ProductId,
+                StoreId: demand.StoreId,
+                Quantity: line.Quantity,
+                Type: MovementType.WholesaleSale,
+                DocumentType: "demand-reversal",
+                DocumentId: demand.Id,
+                DocumentNumber: demand.Number,
+                UnitCost: line.UnitPrice,
+                OccurredAt: DateTime.UtcNow,
+                Notes: $"Отмена отгрузки {demand.Number}"), ct);
+        }
+
+        demand.Status = DemandStatus.Draft;
+        demand.PostedAt = null;
+        await _db.SaveChangesAsync(ct);
+        return NoContent();
+    }
+
+    private static bool IsSerializationConflict(Exception ex)
+    {
+        for (Exception? e = ex; e is not null; e = e.InnerException)
+        {
+            if (e is System.Data.Common.DbException { SqlState: "40001" or "40P01" })
+                return true;
+        }
+        return false;
+    }
+
+    private void ApplyLines(Demand demand, IReadOnlyList<DemandLineInput> input)
+    {
+        var order = 0;
+        decimal subtotal = 0m, discountTotal = 0m;
+        foreach (var l in input)
+        {
+            var lineTotal = l.Quantity * l.UnitPrice - l.Discount;
+            // Прямой Add в DbSet — тот же паттерн что в RetailSale.ApplyLines:
+            // через nav-collection EF8 в комбинации с client-side Id путается.
+            _db.DemandLines.Add(new DemandLine
+            {
+                DemandId = demand.Id,
+                ProductId = l.ProductId,
+                Quantity = l.Quantity,
+                UnitPrice = l.UnitPrice,
+                Discount = l.Discount,
+                LineTotal = lineTotal,
+                VatPercent = l.VatPercent,
+                SortOrder = order++,
+            });
+            subtotal += l.Quantity * l.UnitPrice;
+            discountTotal += l.Discount;
+        }
+        demand.Subtotal = subtotal;
+        demand.DiscountTotal = discountTotal;
+        demand.Total = subtotal - discountTotal;
+    }
+
+    private async Task<string> GenerateNumberAsync(DateTime date, CancellationToken ct)
+    {
+        var prefix = $"ОТГ-{date.Year}-";
+        var lastNumber = await _db.Demands
+            .Where(d => d.Number.StartsWith(prefix))
+            .OrderByDescending(d => d.Number)
+            .Select(d => d.Number)
+            .FirstOrDefaultAsync(ct);
+        var seq = 1;
+        if (lastNumber is not null && int.TryParse(lastNumber[prefix.Length..], out var last))
+            seq = last + 1;
+        return $"{prefix}{seq:D6}";
+    }
+
+    private async Task<DemandDto?> GetInternal(Guid id, CancellationToken ct)
+    {
+        var row = await (from d in _db.Demands.AsNoTracking()
+                         join cp in _db.Counterparties on d.CustomerId equals cp.Id
+                         join st in _db.Stores on d.StoreId equals st.Id
+                         join cu in _db.Currencies on d.CurrencyId equals cu.Id
+                         where d.Id == id
+                         select new { d, cp, st, cu }).FirstOrDefaultAsync(ct);
+        if (row is null) return null;
+
+        var lines = await (from l in _db.DemandLines.AsNoTracking()
+                           join p in _db.Products on l.ProductId equals p.Id
+                           join u in _db.UnitsOfMeasure on p.UnitOfMeasureId equals u.Id
+                           where l.DemandId == id
+                           orderby l.SortOrder
+                           select new DemandLineDto(
+                               l.Id, l.ProductId, p.Name, p.Article, u.Name,
+                               l.Quantity, l.UnitPrice, l.Discount, l.LineTotal,
+                               l.VatPercent, l.SortOrder,
+                               _db.Stocks.Where(s => s.ProductId == l.ProductId && s.StoreId == row.d.StoreId)
+                                   .Select(s => (decimal?)s.Quantity).FirstOrDefault()))
+                          .ToListAsync(ct);
+
+        return new DemandDto(
+            row.d.Id, row.d.Number, row.d.Date, row.d.Status,
+            row.cp.Id, row.cp.Name,
+            row.st.Id, row.st.Name,
+            row.cu.Id, row.cu.Code,
+            row.d.Payment, row.d.Subtotal, row.d.DiscountTotal,
+            row.d.Total, row.d.PaidAmount,
+            row.d.Notes, row.d.PostedAt,
+            lines);
+    }
+}

src/food-market.domain/Sales/Demand.cs

@@ -0,0 +1,77 @@
+using foodmarket.Domain.Catalog;
+using foodmarket.Domain.Common;
+
+namespace foodmarket.Domain.Sales;
+
+public enum DemandStatus
+{
+    Draft = 0,
+    Posted = 1,
+}
+
+/// <summary>Оптовая отгрузка контрагенту-юрлицу. По MoySklad — «Отгрузка».
+/// Отличие от <see cref="RetailSale"/>: всегда юрлицо (CounterpartyId
+/// обязателен), способ оплаты — нал/безнал/в кредит, цена и НДС могут
+/// отличаться от розничных (тип цен «Опт.»). При проведении создаёт
+/// <see cref="Inventory.StockMovement"/> тип
+/// <see cref="Inventory.MovementType.WholesaleSale"/> с -Quantity.</summary>
+public class Demand : TenantEntity
+{
+    public string Number { get; set; } = "";
+    public DateTime Date { get; set; } = DateTime.UtcNow;
+    public DemandStatus Status { get; set; } = DemandStatus.Draft;
+
+    public Guid CustomerId { get; set; }
+    public Counterparty Customer { get; set; } = null!;
+
+    public Guid StoreId { get; set; }
+    public Store Store { get; set; } = null!;
+
+    public Guid CurrencyId { get; set; }
+    public Currency Currency { get; set; } = null!;
+
+    /// <summary>0=Cash, 1=Card, 2=BankTransfer, 3=Credit (постоплата), 99=Mixed.
+    /// Совпадает с <see cref="PaymentMethod"/> + добавлен Credit.</summary>
+    public DemandPayment Payment { get; set; } = DemandPayment.BankTransfer;
+
+    public decimal Subtotal { get; set; }
+    public decimal DiscountTotal { get; set; }
+    public decimal Total { get; set; }
+
+    /// <summary>Сумма оплаченного по этой отгрузке (для отслеживания дебиторки).
+    /// Может быть меньше Total — тогда остаток за контрагентом (Total − PaidAmount).
+    /// На MVP не строим отчёт по задолженности — просто сохраняем.</summary>
+    public decimal PaidAmount { get; set; }
+
+    public string? Notes { get; set; }
+
+    public DateTime? PostedAt { get; set; }
+    public Guid? PostedByUserId { get; set; }
+
+    public ICollection<DemandLine> Lines { get; set; } = new List<DemandLine>();
+}
+
+public enum DemandPayment
+{
+    Cash = 0,
+    Card = 1,
+    BankTransfer = 2,
+    Credit = 3,        // постоплата, дебиторка
+    Mixed = 99,
+}
+
+public class DemandLine : TenantEntity
+{
+    public Guid DemandId { get; set; }
+    public Demand Demand { get; set; } = null!;
+
+    public Guid ProductId { get; set; }
+    public Product Product { get; set; } = null!;
+
+    public decimal Quantity { get; set; }
+    public decimal UnitPrice { get; set; }
+    public decimal Discount { get; set; }
+    public decimal LineTotal { get; set; }
+    public decimal VatPercent { get; set; }
+    public int SortOrder { get; set; }
+}

src/food-market.infrastructure/Persistence/AppDbContext.cs

@@ -63,6 +63,9 @@ public AppDbContext(DbContextOptions<AppDbContext> options, ITenantContext tenan
     public DbSet<RetailSaleLine> RetailSaleLines => Set<RetailSaleLine>();
     public DbSet<PosBatchAck> PosBatchAcks => Set<PosBatchAck>();
 
+    public DbSet<Demand> Demands => Set<Demand>();
+    public DbSet<DemandLine> DemandLines => Set<DemandLine>();
+
     public DbSet<EmployeeRole> EmployeeRoles => Set<EmployeeRole>();
     public DbSet<Employee> Employees => Set<Employee>();
     public DbSet<EmployeeRetailPointAssignment> EmployeeRetailPointAssignments => Set<EmployeeRetailPointAssignment>();

src/food-market.infrastructure/Persistence/Configurations/SalesConfigurations.cs

@@ -59,5 +59,40 @@ public static void ConfigureSales(this ModelBuilder b)
             e.HasIndex(x => new { x.OrganizationId, x.IdempotencyKey }).IsUnique();
             e.HasIndex(x => x.CreatedAt); // для фонового cleanup'а старых acks
         });
+
+        b.Entity<Demand>(e =>
+        {
+            e.ToTable("demands");
+            e.Property(x => x.Number).HasMaxLength(50).IsRequired();
+            e.Property(x => x.Notes).HasMaxLength(1000);
+            e.Property(x => x.Subtotal).HasPrecision(18, 4);
+            e.Property(x => x.DiscountTotal).HasPrecision(18, 4);
+            e.Property(x => x.Total).HasPrecision(18, 4);
+            e.Property(x => x.PaidAmount).HasPrecision(18, 4);
+
+            e.HasOne(x => x.Customer).WithMany().HasForeignKey(x => x.CustomerId).OnDelete(DeleteBehavior.Restrict);
+            e.HasOne(x => x.Store).WithMany().HasForeignKey(x => x.StoreId).OnDelete(DeleteBehavior.Restrict);
+            e.HasOne(x => x.Currency).WithMany().HasForeignKey(x => x.CurrencyId).OnDelete(DeleteBehavior.Restrict);
+
+            e.HasMany(x => x.Lines).WithOne(l => l.Demand).HasForeignKey(l => l.DemandId).OnDelete(DeleteBehavior.Cascade);
+
+            e.HasIndex(x => new { x.OrganizationId, x.Number }).IsUnique();
+            e.HasIndex(x => new { x.OrganizationId, x.Date });
+            e.HasIndex(x => new { x.OrganizationId, x.Status });
+            e.HasIndex(x => new { x.OrganizationId, x.CustomerId });
+        });
+
+        b.Entity<DemandLine>(e =>
+        {
+            e.ToTable("demand_lines");
+            e.Property(x => x.Quantity).HasPrecision(18, 4);
+            e.Property(x => x.UnitPrice).HasPrecision(18, 4);
+            e.Property(x => x.Discount).HasPrecision(18, 4);
+            e.Property(x => x.LineTotal).HasPrecision(18, 4);
+            e.Property(x => x.VatPercent).HasPrecision(5, 2);
+
+            e.HasOne(x => x.Product).WithMany().HasForeignKey(x => x.ProductId).OnDelete(DeleteBehavior.Restrict);
+            e.HasIndex(x => new { x.OrganizationId, x.ProductId });
+        });
     }
 }

src/food-market.infrastructure/Persistence/Migrations/20260528200000_Phase8a_Demands.cs

@@ -0,0 +1,83 @@
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using foodmarket.Infrastructure.Persistence;
+
+#nullable disable
+
+namespace foodmarket.Infrastructure.Persistence.Migrations
+{
+    /// <summary>Phase8a — оптовая отгрузка (Demand).
+    ///
+    /// По MoySklad: «Отгрузка контрагенту». Зеркалит RetailSale но всегда с
+    /// юрлицом-контрагентом, способ оплаты включает Credit (постоплата).
+    /// При проведении создаёт stock_movements тип WholesaleSale (=3) с -Quantity.</summary>
+    [DbContext(typeof(AppDbContext))]
+    [Migration("20260528200000_Phase8a_Demands")]
+    public partial class Phase8a_Demands : Migration
+    {
+        protected override void Up(MigrationBuilder b)
+        {
+            b.Sql(@"
+                CREATE TABLE IF NOT EXISTS public.demands (
+                    ""Id""               uuid PRIMARY KEY,
+                    ""OrganizationId""   uuid NOT NULL,
+                    ""Number""           varchar(50) NOT NULL,
+                    ""Date""             timestamp with time zone NOT NULL,
+                    ""Status""           integer NOT NULL,
+                    ""CustomerId""       uuid NOT NULL,
+                    ""StoreId""          uuid NOT NULL,
+                    ""CurrencyId""       uuid NOT NULL,
+                    ""Payment""          integer NOT NULL,
+                    ""Subtotal""         numeric(18,4) NOT NULL,
+                    ""DiscountTotal""    numeric(18,4) NOT NULL,
+                    ""Total""            numeric(18,4) NOT NULL,
+                    ""PaidAmount""       numeric(18,4) NOT NULL DEFAULT 0,
+                    ""Notes""            varchar(1000),
+                    ""PostedAt""         timestamp with time zone,
+                    ""PostedByUserId""   uuid,
+                    ""CreatedAt""        timestamp with time zone NOT NULL,
+                    ""UpdatedAt""        timestamp with time zone,
+                    CONSTRAINT ""FK_demands_counterparties_CustomerId"" FOREIGN KEY (""CustomerId"") REFERENCES public.counterparties(""Id"") ON DELETE RESTRICT,
+                    CONSTRAINT ""FK_demands_stores_StoreId"" FOREIGN KEY (""StoreId"") REFERENCES public.stores(""Id"") ON DELETE RESTRICT,
+                    CONSTRAINT ""FK_demands_currencies_CurrencyId"" FOREIGN KEY (""CurrencyId"") REFERENCES public.currencies(""Id"") ON DELETE RESTRICT
+                );
+
+                CREATE UNIQUE INDEX IF NOT EXISTS ""IX_demands_OrganizationId_Number"" ON public.demands (""OrganizationId"", ""Number"");
+                CREATE INDEX IF NOT EXISTS ""IX_demands_OrganizationId_Date"" ON public.demands (""OrganizationId"", ""Date"");
+                CREATE INDEX IF NOT EXISTS ""IX_demands_OrganizationId_Status"" ON public.demands (""OrganizationId"", ""Status"");
+                CREATE INDEX IF NOT EXISTS ""IX_demands_OrganizationId_CustomerId"" ON public.demands (""OrganizationId"", ""CustomerId"");
+                CREATE INDEX IF NOT EXISTS ""IX_demands_StoreId"" ON public.demands (""StoreId"");
+                CREATE INDEX IF NOT EXISTS ""IX_demands_CurrencyId"" ON public.demands (""CurrencyId"");
+
+                CREATE TABLE IF NOT EXISTS public.demand_lines (
+                    ""Id""               uuid PRIMARY KEY,
+                    ""OrganizationId""   uuid NOT NULL,
+                    ""DemandId""         uuid NOT NULL,
+                    ""ProductId""        uuid NOT NULL,
+                    ""Quantity""         numeric(18,4) NOT NULL,
+                    ""UnitPrice""        numeric(18,4) NOT NULL,
+                    ""Discount""         numeric(18,4) NOT NULL,
+                    ""LineTotal""        numeric(18,4) NOT NULL,
+                    ""VatPercent""       numeric(5,2) NOT NULL,
+                    ""SortOrder""        integer NOT NULL,
+                    ""CreatedAt""        timestamp with time zone NOT NULL,
+                    ""UpdatedAt""        timestamp with time zone,
+                    CONSTRAINT ""FK_demand_lines_demands_DemandId"" FOREIGN KEY (""DemandId"") REFERENCES public.demands(""Id"") ON DELETE CASCADE,
+                    CONSTRAINT ""FK_demand_lines_products_ProductId"" FOREIGN KEY (""ProductId"") REFERENCES public.products(""Id"") ON DELETE RESTRICT
+                );
+
+                CREATE INDEX IF NOT EXISTS ""IX_demand_lines_DemandId"" ON public.demand_lines (""DemandId"");
+                CREATE INDEX IF NOT EXISTS ""IX_demand_lines_ProductId"" ON public.demand_lines (""ProductId"");
+                CREATE INDEX IF NOT EXISTS ""IX_demand_lines_OrganizationId_ProductId"" ON public.demand_lines (""OrganizationId"", ""ProductId"");
+            ");
+        }
+
+        protected override void Down(MigrationBuilder b)
+        {
+            b.Sql(@"
+                DROP TABLE IF EXISTS public.demand_lines;
+                DROP TABLE IF EXISTS public.demands;
+            ");
+        }
+    }
+}

src/food-market.web/src/App.tsx

@@ -38,6 +38,8 @@ import { InventoriesPage } from '@/pages/InventoriesPage'
 import { InventoryEditPage } from '@/pages/InventoryEditPage'
 import { SupplierReturnsPage } from '@/pages/SupplierReturnsPage'
 import { SupplierReturnEditPage } from '@/pages/SupplierReturnEditPage'
+import { DemandsPage } from '@/pages/DemandsPage'
+import { DemandEditPage } from '@/pages/DemandEditPage'
 import { SalesReportPage } from '@/pages/SalesReportPage'
 import { StockReportPage } from '@/pages/StockReportPage'
 import { ProfitReportPage } from '@/pages/ProfitReportPage'
@@ -136,6 +138,9 @@ export default function App() {
               <Route path="/sales/retail" element={<RetailSalesPage />} />
               <Route path="/sales/retail/new" element={<RetailSaleEditPage />} />
               <Route path="/sales/retail/:id" element={<RetailSaleEditPage />} />
+              <Route path="/sales/demands" element={<DemandsPage />} />
+              <Route path="/sales/demands/new" element={<DemandEditPage />} />
+              <Route path="/sales/demands/:id" element={<DemandEditPage />} />
               <Route path="/admin/import/moysklad" element={<RoleGuard roles={['Admin']}><MoySkladImportPage /></RoleGuard>} />
               <Route path="/settings/organization" element={<RoleGuard roles={['Admin']}><OrganizationSettingsPage /></RoleGuard>} />
               <Route path="/settings/employees" element={<RoleGuard roles={['Admin']}><EmployeesPage /></RoleGuard>} />

src/food-market.web/src/components/AppLayout.tsx

@@ -7,7 +7,7 @@ import { cn } from '@/lib/utils'
 import {
   LayoutDashboard, Package, FolderTree, Ruler, Tag,
   Users, Warehouse, Store as StoreIcon, LogOut, Download, UserCog, Shield, ShieldCheck,
-  Boxes, History, TruckIcon, ShoppingCart, Settings, Menu, X, PackagePlus, PackageMinus, ArrowRightLeft, ClipboardCheck, Undo2, BarChart3, TrendingUp, Target,
+  Boxes, History, TruckIcon, ShoppingCart, Settings, Menu, X, PackagePlus, PackageMinus, ArrowRightLeft, ClipboardCheck, Undo2, BarChart3, TrendingUp, Target, Send,
 } from 'lucide-react'
 import { Logo } from './Logo'
 import { SuperAdminAsOrgBanner } from './SuperAdminAsOrgBanner'
@@ -105,6 +105,7 @@ function buildNav(roles: string[]): NavSection[] {
   if (isAdmin || isCashier) {
     sections.push({ group: 'Продажи', items: [
       { to: '/sales/retail', icon: ShoppingCart, label: 'Розничные чеки' },
+      ...(isAdmin ? [{ to: '/sales/demands', icon: Send, label: 'Оптовые отгрузки' }] : []),
     ]})
   }
 

src/food-market.web/src/lib/types.ts

@@ -137,6 +137,47 @@ export interface EnterDto {
   lines: EnterLineDto[];
 }
 
+export const DemandStatus = { Draft: 0, Posted: 1 } as const
+export type DemandStatus = (typeof DemandStatus)[keyof typeof DemandStatus]
+
+export const DemandPayment = { Cash: 0, Card: 1, BankTransfer: 2, Credit: 3, Mixed: 99 } as const
+export type DemandPayment = (typeof DemandPayment)[keyof typeof DemandPayment]
+export const demandPaymentLabel: Record<DemandPayment, string> = {
+  [DemandPayment.Cash]: 'Наличные',
+  [DemandPayment.Card]: 'Карта',
+  [DemandPayment.BankTransfer]: 'Безнал',
+  [DemandPayment.Credit]: 'В кредит',
+  [DemandPayment.Mixed]: 'Смешанная',
+}
+
+export interface DemandListRow {
+  id: string; number: string; date: string; status: DemandStatus;
+  customerId: string; customerName: string;
+  storeId: string; storeName: string;
+  currencyId: string; currencyCode: string;
+  total: number; paidAmount: number;
+  payment: DemandPayment; lineCount: number; postedAt: string | null;
+}
+
+export interface DemandLineDto {
+  id: string | null; productId: string;
+  productName: string | null; productArticle: string | null; unitSymbol: string | null;
+  quantity: number; unitPrice: number; discount: number; lineTotal: number;
+  vatPercent: number; sortOrder: number;
+  stockAtStore: number | null;
+}
+
+export interface DemandDto {
+  id: string; number: string; date: string; status: DemandStatus;
+  customerId: string; customerName: string;
+  storeId: string; storeName: string;
+  currencyId: string; currencyCode: string;
+  payment: DemandPayment;
+  subtotal: number; discountTotal: number; total: number; paidAmount: number;
+  notes: string | null; postedAt: string | null;
+  lines: DemandLineDto[];
+}
+
 export const LossStatus = { Draft: 0, Posted: 1 } as const
 export type LossStatus = (typeof LossStatus)[keyof typeof LossStatus]
 

src/food-market.web/src/pages/DemandEditPage.tsx

@@ -0,0 +1,403 @@
+import { useState, useEffect, type FormEvent } from 'react'
+import { useNavigate, useParams, Link } from 'react-router-dom'
+import { useQuery, useQueryClient, useMutation } from '@tanstack/react-query'
+import { ArrowLeft, Plus, Trash2, Save, CheckCircle } from 'lucide-react'
+import { api } from '@/lib/api'
+import { Button } from '@/components/Button'
+import { Field, TextArea, Select, AsyncSelect, MoneyInput, NumberInput, Checkbox } from '@/components/Field'
+import { DateField } from '@/components/DateField'
+import { ProductPicker } from '@/components/ProductPicker'
+import { useStores, useCurrencies } from '@/lib/useLookups'
+import { useOrgSettings } from '@/lib/useOrgSettings'
+import {
+  DemandStatus, DemandPayment, demandPaymentLabel,
+  type DemandDto, type Product,
+} from '@/lib/types'
+
+interface LineRow {
+  productId: string
+  productName: string
+  productArticle: string | null
+  unitSymbol: string | null
+  quantity: number
+  unitPrice: number
+  discount: number
+  vatPercent: number
+  stockAtStore: number | null
+}
+
+interface Form {
+  date: string
+  customerId: string
+  storeId: string
+  currencyId: string
+  payment: DemandPayment
+  paidAmount: number
+  notes: string
+  lines: LineRow[]
+}
+
+const todayIso = () => {
+  const d = new Date()
+  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`
+}
+
+const emptyForm: Form = {
+  date: todayIso(), customerId: '', storeId: '', currencyId: '',
+  payment: DemandPayment.BankTransfer, paidAmount: 0,
+  notes: '', lines: [],
+}
+
+export function DemandEditPage() {
+  const { id } = useParams<{ id: string }>()
+  const isNew = !id || id === 'new'
+  const navigate = useNavigate()
+  const qc = useQueryClient()
+
+  const stores = useStores()
+  const currencies = useCurrencies()
+  const org = useOrgSettings()
+
+  const [form, setForm] = useState<Form>(emptyForm)
+  const [pickerOpen, setPickerOpen] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+
+  const existing = useQuery({
+    queryKey: ['/api/sales/demands', id],
+    queryFn: async () => (await api.get<DemandDto>(`/api/sales/demands/${id}`)).data,
+    enabled: !isNew,
+  })
+
+  useEffect(() => {
+    if (!isNew && existing.data) {
+      const s = existing.data
+      setForm({
+        date: s.date.slice(0, 10),
+        customerId: s.customerId,
+        storeId: s.storeId,
+        currencyId: s.currencyId,
+        payment: s.payment,
+        paidAmount: s.paidAmount,
+        notes: s.notes ?? '',
+        lines: s.lines.map((l) => ({
+          productId: l.productId,
+          productName: l.productName ?? '',
+          productArticle: l.productArticle,
+          unitSymbol: l.unitSymbol,
+          quantity: l.quantity,
+          unitPrice: l.unitPrice,
+          discount: l.discount,
+          vatPercent: l.vatPercent,
+          stockAtStore: l.stockAtStore,
+        })),
+      })
+    }
+  }, [isNew, existing.data])
+
+  useEffect(() => {
+    if (isNew) {
+      if (!form.storeId && stores.data?.length) {
+        const main = stores.data.find((s) => s.isMain) ?? stores.data[0]
+        setForm((f) => ({ ...f, storeId: main.id }))
+      }
+      if (!form.currencyId && currencies.data?.length) {
+        const def = org.data?.defaultCurrencyId
+          ? currencies.data.find((c) => c.id === org.data!.defaultCurrencyId)
+          : currencies.data.find((c) => c.code === 'KZT')
+        if (def) setForm((f) => ({ ...f, currencyId: def.id }))
+      }
+    }
+  }, [isNew, stores.data, currencies.data, org.data?.defaultCurrencyId, form.storeId, form.currencyId])
+
+  const isDraft = isNew || existing.data?.status === DemandStatus.Draft
+  const isPosted = existing.data?.status === DemandStatus.Posted
+
+  const lineTotal = (l: LineRow) => l.quantity * l.unitPrice - l.discount
+  const grandTotal = form.lines.reduce((s, l) => s + lineTotal(l), 0)
+
+  const save = useMutation({
+    mutationFn: async () => {
+      const payload = {
+        date: new Date(form.date).toISOString(),
+        customerId: form.customerId,
+        storeId: form.storeId,
+        currencyId: form.currencyId,
+        payment: form.payment,
+        paidAmount: form.paidAmount,
+        notes: form.notes || null,
+        lines: form.lines.map((l) => ({
+          productId: l.productId, quantity: l.quantity, unitPrice: l.unitPrice,
+          discount: l.discount, vatPercent: l.vatPercent,
+        })),
+      }
+      if (isNew) return (await api.post<DemandDto>('/api/sales/demands', payload)).data
+      await api.put(`/api/sales/demands/${id}`, payload)
+      return null
+    },
+    onSuccess: (created) => {
+      qc.invalidateQueries({ queryKey: ['/api/sales/demands'] })
+      navigate(created ? `/sales/demands/${created.id}` : `/sales/demands/${id}`)
+    },
+    onError: (e: Error) => setError(e.message),
+  })
+
+  const post = useMutation({
+    mutationFn: async () => { await api.post(`/api/sales/demands/${id}/post`) },
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: ['/api/sales/demands'] })
+      qc.invalidateQueries({ queryKey: ['/api/inventory/stock'] })
+      qc.invalidateQueries({ queryKey: ['/api/inventory/movements'] })
+      existing.refetch()
+    },
+    onError: (e: Error) => {
+      const msg = (e as { response?: { data?: { error?: string } } }).response?.data?.error ?? e.message
+      setError(msg)
+    },
+  })
+
+  const unpost = useMutation({
+    mutationFn: async () => { await api.post(`/api/sales/demands/${id}/unpost`) },
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: ['/api/sales/demands'] })
+      qc.invalidateQueries({ queryKey: ['/api/inventory/stock'] })
+      existing.refetch()
+    },
+    onError: (e: Error) => setError(e.message),
+  })
+
+  const remove = useMutation({
+    mutationFn: async () => { await api.delete(`/api/sales/demands/${id}`) },
+    onSuccess: () => navigate('/sales/demands'),
+    onError: (e: Error) => setError(e.message),
+  })
+
+  const onSubmit = (e: FormEvent) => { e.preventDefault(); save.mutate() }
+
+  const addLineFromProduct = (p: Product) => {
+    setForm({
+      ...form,
+      lines: [...form.lines, {
+        productId: p.id,
+        productName: p.name,
+        productArticle: p.article,
+        unitSymbol: p.unitName,
+        quantity: 1,
+        unitPrice: p.prices?.[0]?.amount ?? 0,
+        discount: 0,
+        vatPercent: p.vat,
+        stockAtStore: null,
+      }],
+    })
+  }
+  const updateLine = (i: number, patch: Partial<LineRow>) =>
+    setForm({ ...form, lines: form.lines.map((l, ix) => ix === i ? { ...l, ...patch } : l) })
+  const removeLine = (i: number) =>
+    setForm({ ...form, lines: form.lines.filter((_, ix) => ix !== i) })
+
+  const canSave = !!form.date && !!form.customerId && !!form.storeId && !!form.currencyId
+    && form.lines.length > 0 && isDraft
+
+  const fractional = org.data?.allowFractionalPrices ?? false
+  const moneyFmt = fractional
+    ? { minimumFractionDigits: 2, maximumFractionDigits: 2 }
+    : { maximumFractionDigits: 0 }
+
+  return (
+    <form onSubmit={onSubmit} className="flex flex-col h-full">
+      <div className="flex items-center justify-between gap-4 px-6 py-3 border-b border-slate-200 dark:border-slate-800 bg-white dark:bg-slate-900">
+        <div className="flex items-center gap-3 min-w-0">
+          <Link to="/sales/demands" className="text-slate-400 hover:text-slate-700 dark:hover:text-slate-200 flex-shrink-0">
+            <ArrowLeft className="w-5 h-5" />
+          </Link>
+          <div className="min-w-0">
+            <h1 className="text-base font-semibold text-slate-900 dark:text-slate-100 truncate">
+              {isNew ? 'Новая отгрузка' : existing.data?.number ?? 'Отгрузка'}
+            </h1>
+            <p className="text-xs text-slate-500">
+              {isPosted
+                ? <span className="text-green-700 inline-flex items-center gap-1"><CheckCircle className="w-3 h-3" /> Проведён {existing.data?.postedAt ? new Date(existing.data.postedAt).toLocaleString('ru') : ''}</span>
+                : 'Черновик — товар не списан, пока не проведёшь'}
+            </p>
+          </div>
+        </div>
+        <div className="flex gap-3 flex-shrink-0 items-center">
+          {isDraft && !isNew && (
+            <Button type="button" variant="danger" size="sm" onClick={() => { if (confirm('Удалить черновик?')) remove.mutate() }}>
+              <Trash2 className="w-4 h-4" /> Удалить
+            </Button>
+          )}
+          {isDraft && (
+            <Button type="submit" disabled={!canSave || save.isPending}>
+              <Save className="w-4 h-4" /> {save.isPending ? 'Сохраняю…' : 'Сохранить'}
+            </Button>
+          )}
+        </div>
+      </div>
+
+      <div className="flex-1 overflow-auto">
+        <div className="max-w-5xl mx-auto p-3 sm:p-6 space-y-4">
+          {error && (
+            <div className="p-3 rounded-md bg-red-50 text-red-700 text-sm border border-red-200">{error}</div>
+          )}
+
+          <section className="bg-white dark:bg-slate-900 rounded-lg border border-slate-200 dark:border-slate-800 p-4">
+            <div className="grid grid-cols-1 md:grid-cols-3 gap-x-4 gap-y-3">
+              <Field label="Дата *">
+                <DateField required value={form.date || null} disabled={isPosted}
+                  onChange={(iso) => setForm({ ...form, date: iso ?? '' })} />
+              </Field>
+              <Field label="Контрагент *">
+                <AsyncSelect
+                  url="/api/catalog/counterparties"
+                  value={form.customerId}
+                  disabled={isPosted}
+                  onChange={(v) => setForm({ ...form, customerId: v })}
+                  placeholder="Выберите контрагента…"
+                />
+              </Field>
+              <Field label="Склад *">
+                <Select value={form.storeId} disabled={isPosted}
+                  onChange={(e) => setForm({ ...form, storeId: e.target.value })}>
+                  <option value="">—</option>
+                  {stores.data?.map((s) => <option key={s.id} value={s.id}>{s.name}</option>)}
+                </Select>
+              </Field>
+              <Field label="Способ оплаты *">
+                <Select value={String(form.payment)} disabled={isPosted}
+                  onChange={(e) => setForm({ ...form, payment: Number(e.target.value) as DemandPayment })}>
+                  {Object.entries(demandPaymentLabel).map(([v, lbl]) => (
+                    <option key={v} value={v}>{lbl}</option>
+                  ))}
+                </Select>
+              </Field>
+              <Field label="Оплачено">
+                <MoneyInput value={form.paidAmount} disabled={isPosted}
+                  allowFractional={fractional}
+                  onChange={(v) => setForm({ ...form, paidAmount: v ?? 0 })} />
+              </Field>
+              {org.data?.multiCurrencyEnabled && (
+                <Field label="Валюта *">
+                  <Select value={form.currencyId} disabled={isPosted}
+                    onChange={(e) => setForm({ ...form, currencyId: e.target.value })}>
+                    <option value="">—</option>
+                    {currencies.data?.map((c) => <option key={c.id} value={c.id}>{c.code}</option>)}
+                  </Select>
+                </Field>
+              )}
+              <Field label="Комментарий" className="md:col-span-3">
+                <TextArea rows={2} value={form.notes} disabled={isPosted}
+                  onChange={(e) => setForm({ ...form, notes: e.target.value })} />
+              </Field>
+            </div>
+
+            {!isNew && (
+              <div className="mt-4 pt-4 border-t border-slate-100 dark:border-slate-800">
+                <Checkbox
+                  label="Проведено"
+                  checked={isPosted}
+                  disabled={post.isPending || unpost.isPending || form.lines.length === 0}
+                  onChange={(v) => {
+                    if (v) {
+                      if (confirm('Провести? Товар спишется со склада.')) post.mutate()
+                    } else {
+                      if (confirm('Снять проведение? Товар вернётся на склад.')) unpost.mutate()
+                    }
+                  }}
+                />
+              </div>
+            )}
+          </section>
+
+          <section className="bg-white dark:bg-slate-900 rounded-lg border border-slate-200 dark:border-slate-800 p-4">
+            <div className="flex items-center justify-between mb-3">
+              <h2 className="font-medium text-slate-900 dark:text-slate-100">Позиции</h2>
+              {!isPosted && (
+                <Button type="button" variant="secondary" size="sm" onClick={() => setPickerOpen(true)}>
+                  <Plus className="w-3.5 h-3.5" /> Добавить из справочника
+                </Button>
+              )}
+            </div>
+
+            {form.lines.length === 0 ? (
+              <div className="text-sm text-slate-500 py-6 text-center">Нет позиций.</div>
+            ) : (
+              <div className="overflow-x-auto">
+                <table className="w-full text-sm">
+                  <thead className="text-left">
+                    <tr className="border-b border-slate-200 dark:border-slate-700">
+                      <th className="py-2 pr-3 font-medium text-xs uppercase text-slate-500">Товар</th>
+                      <th className="py-2 px-3 font-medium text-xs uppercase text-slate-500 w-[80px]">Ед.</th>
+                      <th className="py-2 px-3 font-medium text-xs uppercase text-slate-500 w-[100px] text-right">Остаток</th>
+                      <th className="py-2 px-3 font-medium text-xs uppercase text-slate-500 w-[110px] text-right">Кол-во</th>
+                      <th className="py-2 px-3 font-medium text-xs uppercase text-slate-500 w-[130px] text-right">Цена</th>
+                      <th className="py-2 px-3 font-medium text-xs uppercase text-slate-500 w-[110px] text-right">Скидка</th>
+                      <th className="py-2 px-3 font-medium text-xs uppercase text-slate-500 w-[80px] text-right">НДС</th>
+                      <th className="py-2 px-3 font-medium text-xs uppercase text-slate-500 w-[140px] text-right">Сумма</th>
+                      <th className="w-8"></th>
+                    </tr>
+                  </thead>
+                  <tbody>
+                    {form.lines.map((l, i) => (
+                      <tr key={i} className="border-b border-slate-100 dark:border-slate-800">
+                        <td className="py-2 pr-3">
+                          <div className="font-medium text-slate-800 dark:text-slate-100">{l.productName || '(без названия)'}</div>
+                          {l.productArticle && <div className="text-xs text-slate-500">{l.productArticle}</div>}
+                        </td>
+                        <td className="py-2 px-3 text-slate-500">{l.unitSymbol ?? '—'}</td>
+                        <td className="py-2 px-3 text-right font-mono text-slate-500">
+                          {l.stockAtStore != null ? l.stockAtStore.toLocaleString('ru') : '—'}
+                        </td>
+                        <td className="py-2 px-3 text-right">
+                          <NumberInput value={l.quantity} disabled={isPosted}
+                            onChange={(v) => updateLine(i, { quantity: v ?? 0 })} />
+                        </td>
+                        <td className="py-2 px-3 text-right">
+                          <MoneyInput value={l.unitPrice} disabled={isPosted}
+                            allowFractional={fractional}
+                            onChange={(v) => updateLine(i, { unitPrice: v ?? 0 })} />
+                        </td>
+                        <td className="py-2 px-3 text-right">
+                          <MoneyInput value={l.discount} disabled={isPosted}
+                            allowFractional={fractional}
+                            onChange={(v) => updateLine(i, { discount: v ?? 0 })} />
+                        </td>
+                        <td className="py-2 px-3 text-right">
+                          <NumberInput value={l.vatPercent} disabled={isPosted}
+                            onChange={(v) => updateLine(i, { vatPercent: v ?? 0 })} />
+                        </td>
+                        <td className="py-2 px-3 text-right font-mono">
+                          {lineTotal(l).toLocaleString('ru', moneyFmt)}
+                        </td>
+                        <td className="py-2 px-1">
+                          {!isPosted && (
+                            <button type="button" onClick={() => removeLine(i)}
+                              className="text-slate-400 hover:text-red-600">
+                              <Trash2 className="w-4 h-4" />
+                            </button>
+                          )}
+                        </td>
+                      </tr>
+                    ))}
+                    <tr className="font-medium">
+                      <td className="py-3 pr-3" colSpan={7}>Итого</td>
+                      <td className="py-3 px-3 text-right font-mono">
+                        {grandTotal.toLocaleString('ru', moneyFmt)} {existing.data?.currencyCode ?? ''}
+                      </td>
+                      <td />
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+            )}
+          </section>
+        </div>
+      </div>
+
+      <ProductPicker
+        open={pickerOpen}
+        onClose={() => setPickerOpen(false)}
+        onPick={(p) => { addLineFromProduct(p); setPickerOpen(false) }}
+      />
+    </form>
+  )
+}

src/food-market.web/src/pages/DemandsPage.tsx

@@ -0,0 +1,66 @@
+import { Link, useNavigate } from 'react-router-dom'
+import { Plus } from 'lucide-react'
+import { ListPageShell } from '@/components/ListPageShell'
+import { DataTable } from '@/components/DataTable'
+import { Pagination } from '@/components/Pagination'
+import { SearchBar } from '@/components/SearchBar'
+import { Button } from '@/components/Button'
+import { useCatalogList } from '@/lib/useCatalog'
+import { useOrgSettings } from '@/lib/useOrgSettings'
+import { type DemandListRow, DemandStatus, demandPaymentLabel } from '@/lib/types'
+
+const URL = '/api/sales/demands'
+
+export function DemandsPage() {
+  const navigate = useNavigate()
+  const { data, isLoading, page, setPage, search, setSearch, sortKey, sortOrder, setSort } = useCatalogList<DemandListRow>(URL)
+  const org = useOrgSettings()
+  const fractional = org.data?.allowFractionalPrices ?? false
+  const moneyFmt = fractional
+    ? { minimumFractionDigits: 2, maximumFractionDigits: 2 }
+    : { maximumFractionDigits: 0 }
+
+  return (
+    <ListPageShell
+      title="Оптовые отгрузки"
+      description={data ? `${data.total.toLocaleString('ru')} документов` : 'Отгрузка товара юрлицу-контрагенту.'}
+      actions={
+        <>
+          <SearchBar value={search} onChange={setSearch} placeholder="По номеру или контрагенту…" />
+          <Link to="/sales/demands/new">
+            <Button><Plus className="w-4 h-4" /> Новая отгрузка</Button>
+          </Link>
+        </>
+      }
+      footer={data && data.total > 0 && (
+        <Pagination page={page} pageSize={data.pageSize} total={data.total} onPageChange={setPage} />
+      )}
+    >
+      <DataTable
+        rows={data?.items ?? []}
+        isLoading={isLoading}
+        rowKey={(r) => r.id}
+        sortKey={sortKey}
+        sortOrder={sortOrder}
+        onSortChange={setSort}
+        onRowClick={(r) => navigate(`/sales/demands/${r.id}`)}
+        columns={[
+          { header: '№', width: '160px', sortKey: 'number', cell: (r) => <span className="font-mono text-slate-600">{r.number}</span> },
+          { header: 'Дата', width: '120px', sortKey: 'date', cell: (r) => new Date(r.date).toLocaleDateString('ru') },
+          { header: 'Статус', width: '110px', sortKey: 'status', cell: (r) => (
+            r.status === DemandStatus.Posted
+              ? <span className="text-xs px-2 py-0.5 rounded bg-green-50 text-green-700">Проведён</span>
+              : <span className="text-xs px-2 py-0.5 rounded bg-slate-100 text-slate-600">Черновик</span>
+          )},
+          { header: 'Контрагент', sortKey: 'customer', cell: (r) => r.customerName },
+          { header: 'Склад', width: '160px', cell: (r) => r.storeName },
+          { header: 'Оплата', width: '110px', cell: (r) => demandPaymentLabel[r.payment] ?? r.payment },
+          { header: 'Позиций', width: '90px', className: 'text-right', cell: (r) => r.lineCount },
+          { header: 'Сумма', width: '140px', className: 'text-right font-mono', sortKey: 'total', cell: (r) => `${r.total.toLocaleString('ru', moneyFmt)} ${r.currencyCode}` },
+          { header: 'Оплачено', width: '140px', className: 'text-right font-mono text-slate-500', cell: (r) => r.paidAmount.toLocaleString('ru', moneyFmt) },
+        ]}
+        empty="Отгрузок пока нет. Создай первую — товар спишется со склада после проведения."
+      />
+    </ListPageShell>
+  )
+}

tests/food-market.IntegrationTests/DemandPostUnpostTests.cs

@@ -0,0 +1,110 @@
+using System.Net.Http.Json;
+using System.Text.Json;
+using FluentAssertions;
+using foodmarket.IntegrationTests.Support;
+using Xunit;
+
+namespace foodmarket.IntegrationTests;
+
+[Collection(ApiCollection.Name)]
+public class DemandPostUnpostTests
+{
+    private readonly ApiFactory _factory;
+    public DemandPostUnpostTests(ApiFactory factory) => _factory = factory;
+    private static string RandomBarcode()
+        => string.Concat(Enumerable.Range(0, 13).Select(_ => Random.Shared.Next(0, 10)));
+
+    [Fact]
+    public async Task Post_decrements_stock_unpost_restores()
+    {
+        var api = new ApiActor(_factory.CreateClient());
+        await api.SignupAndLoginAsync($"dem-{Guid.NewGuid():N}");
+        var refs = await api.LoadRefsAsync();
+        var customerId = await api.CreateCounterpartyAsync($"Cust-{Guid.NewGuid():N}");
+        var p1 = await api.CreateProductAsync(refs, $"P-{Guid.NewGuid():N}", 200m, RandomBarcode());
+
+        var enter = await api.Http.PostAsJsonAsync("/api/inventory/enters", new
+        {
+            date = DateTime.UtcNow, storeId = refs.StoreId, currencyId = refs.CurrencyId,
+            notes = "seed", lines = new[] { new { productId = p1, quantity = 20m, unitCost = 100m } },
+        });
+        enter.EnsureSuccessStatusCode();
+        var eid = (await enter.Content.ReadFromJsonAsync<JsonElement>()).GetProperty("id").GetString();
+        (await api.Http.PostAsJsonAsync($"/api/inventory/enters/{eid}/post", new { })).EnsureSuccessStatusCode();
+
+        var demand = await api.Http.PostAsJsonAsync("/api/sales/demands", new
+        {
+            date = DateTime.UtcNow, customerId, storeId = refs.StoreId, currencyId = refs.CurrencyId,
+            payment = 2, // BankTransfer
+            paidAmount = 0m, notes = "test demand",
+            lines = new[] { new { productId = p1, quantity = 5m, unitPrice = 180m, discount = 0m, vatPercent = 12m } },
+        });
+        demand.EnsureSuccessStatusCode();
+        var did = (await demand.Content.ReadFromJsonAsync<JsonElement>()).GetProperty("id").GetString();
+
+        using var post = await api.Http.PostAsJsonAsync($"/api/sales/demands/{did}/post", new { });
+        post.IsSuccessStatusCode.Should().BeTrue($"post вернул {(int)post.StatusCode}: {await post.Content.ReadAsStringAsync()}");
+        (await api.StockOfAsync(refs.StoreId, p1)).Should().Be(15m);
+
+        using var unpost = await api.Http.PostAsJsonAsync($"/api/sales/demands/{did}/unpost", new { });
+        unpost.IsSuccessStatusCode.Should().BeTrue();
+        (await api.StockOfAsync(refs.StoreId, p1)).Should().Be(20m);
+    }
+
+    [Fact]
+    public async Task Cannot_post_when_stock_insufficient()
+    {
+        var api = new ApiActor(_factory.CreateClient());
+        await api.SignupAndLoginAsync($"dem-short-{Guid.NewGuid():N}");
+        var refs = await api.LoadRefsAsync();
+        var customerId = await api.CreateCounterpartyAsync($"Cust-{Guid.NewGuid():N}");
+        var p1 = await api.CreateProductAsync(refs, $"P-{Guid.NewGuid():N}", 100m, RandomBarcode());
+
+        var enter = await api.Http.PostAsJsonAsync("/api/inventory/enters", new
+        {
+            date = DateTime.UtcNow, storeId = refs.StoreId, currencyId = refs.CurrencyId,
+            notes = "seed", lines = new[] { new { productId = p1, quantity = 2m, unitCost = 50m } },
+        });
+        enter.EnsureSuccessStatusCode();
+        var eid = (await enter.Content.ReadFromJsonAsync<JsonElement>()).GetProperty("id").GetString();
+        (await api.Http.PostAsJsonAsync($"/api/inventory/enters/{eid}/post", new { })).EnsureSuccessStatusCode();
+
+        var demand = await api.Http.PostAsJsonAsync("/api/sales/demands", new
+        {
+            date = DateTime.UtcNow, customerId, storeId = refs.StoreId, currencyId = refs.CurrencyId,
+            payment = 2, paidAmount = 0m, notes = "over",
+            lines = new[] { new { productId = p1, quantity = 5m, unitPrice = 100m, discount = 0m, vatPercent = 12m } },
+        });
+        demand.EnsureSuccessStatusCode();
+        var did = (await demand.Content.ReadFromJsonAsync<JsonElement>()).GetProperty("id").GetString();
+        using var post = await api.Http.PostAsJsonAsync($"/api/sales/demands/{did}/post", new { });
+        ((int)post.StatusCode).Should().Be(409);
+        (await api.StockOfAsync(refs.StoreId, p1)).Should().Be(2m);
+    }
+
+    [Fact]
+    public async Task Tenant_isolation_demand()
+    {
+        var a = new ApiActor(_factory.CreateClient());
+        var b = new ApiActor(_factory.CreateClient());
+        await a.SignupAndLoginAsync($"dem-iso-a-{Guid.NewGuid():N}");
+        await b.SignupAndLoginAsync($"dem-iso-b-{Guid.NewGuid():N}");
+        var refsA = await a.LoadRefsAsync();
+        var customerA = await a.CreateCounterpartyAsync($"C-{Guid.NewGuid():N}");
+        var pA = await a.CreateProductAsync(refsA, $"PA-{Guid.NewGuid():N}", 100m, RandomBarcode());
+
+        var demand = await a.Http.PostAsJsonAsync("/api/sales/demands", new
+        {
+            date = DateTime.UtcNow, customerId = customerA, storeId = refsA.StoreId, currencyId = refsA.CurrencyId,
+            payment = 2, paidAmount = 0m, notes = "iso",
+            lines = new[] { new { productId = pA, quantity = 1m, unitPrice = 10m, discount = 0m, vatPercent = 12m } },
+        });
+        demand.EnsureSuccessStatusCode();
+        var did = (await demand.Content.ReadFromJsonAsync<JsonElement>()).GetProperty("id").GetString();
+
+        var bList = await b.ListAsync("/api/sales/demands?pageSize=200");
+        bList.Should().NotContain(x => x.GetProperty("id").GetString() == did);
+        using var direct = await b.Http.GetAsync($"/api/sales/demands/{did}");
+        direct.StatusCode.Should().Be(System.Net.HttpStatusCode.NotFound);
+    }
+}