price adjustment and stock adjustments

Backend/ERPCore/Controllers/ApprovalsController.cs

@@ -0,0 +1,43 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Dtos.Approvals;
+using ERPCore.Infra.Auth;
+using ERPCore.Services;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// Approvals inbox and settings (docs/DUAL_APPROVAL_PLAN.md §7, §10). The inbox is open to every
+/// signed-in user — it only lists what they may approve and their own requests. Reading the
+/// settings is open too (screens need to know whether prices are locked); changing them needs
+/// <c>settings.approvals</c>.
+/// </summary>
+[Route("api/v1/approvals")]
+public sealed class ApprovalsController : ApiControllerBase
+{
+    private readonly ApprovalInboxService _inbox;
+    private readonly IApprovalService _approvals;
+
+    public ApprovalsController(ApprovalInboxService inbox, IApprovalService approvals)
+    {
+        _inbox = inbox;
+        _approvals = approvals;
+    }
+
+    [HttpGet("pending")]
+    [ProducesResponseType(typeof(PendingApprovalsDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PendingApprovalsDto>> Pending(CancellationToken ct)
+        => Ok(await _inbox.PendingAsync(ct));
+
+    [HttpGet("config")]
+    [ProducesResponseType(typeof(ApprovalConfigDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<ApprovalConfigDto>> GetConfig(CancellationToken ct)
+        => Ok(await _approvals.GetConfigAsync(ct));
+
+    [HttpPut("config")]
+    [Authorize(Policy = NavPolicies.Prefix + "settings.approvals")]
+    [ProducesResponseType(typeof(ApprovalConfigDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<ApprovalConfigDto>> UpdateConfig([FromBody] UpdateApprovalConfigRequest request, CancellationToken ct)
+        => Ok(await _approvals.UpdateConfigAsync(request, ct));
+}

Backend/ERPCore/Controllers/BankDepositsController.cs

@@ -0,0 +1,78 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Accounts;
+using ERPCore.Dtos.Common;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// Till cash deposited to the bank, and the cash in hand behind it (docs/BANK_DEPOSIT_MODULE_PLAN.md §7.3).
+/// Recording needs the Create action on <c>accounts.bank-deposits</c>; cancelling needs Delete.
+/// </summary>
+[Route("api/v1/bank-deposits")]
+[Authorize(Policy = NavPolicies.Prefix + "accounts.bank-deposits")]
+public sealed class BankDepositsController : ApiControllerBase
+{
+    private readonly IBankDepositService _deposits;
+    private readonly ICashInHandService _cash;
+
+    public BankDepositsController(IBankDepositService deposits, ICashInHandService cash)
+    {
+        _deposits = deposits;
+        _cash = cash;
+    }
+
+    /// <summary>Deposits filtered by business date range, branch, bank account and status, plus their total.</summary>
+    [HttpGet]
+    [ProducesResponseType(typeof(BankDepositListDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<BankDepositListDto>> List(
+        [FromQuery] PageQuery query, [FromQuery] DateOnly? from, [FromQuery] DateOnly? to, [FromQuery] int? branchId,
+        [FromQuery] long? bankAccountId, [FromQuery] BankDepositStatus? status, CancellationToken ct)
+        => Ok(await _deposits.ListAsync(query, new BankDepositListFilter(from, to, branchId, bankAccountId, status), ct));
+
+    [HttpGet("{bankDepositId:int}")]
+    [ProducesResponseType(typeof(BankDepositDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<BankDepositDto>> GetById(int bankDepositId, CancellationToken ct)
+    {
+        var result = await _deposits.GetAsync(bankDepositId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    /// <summary>One business day's cash position (defaults to today) and how much of it can still be deposited.</summary>
+    [HttpGet("cash-in-hand")]
+    [ProducesResponseType(typeof(CashInHandDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<CashInHandDto>> CashInHand([FromQuery] DateOnly? date, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _cash.GetPositionAsync(date, branchId, ct));
+
+    /// <summary>Day-wise cash position for <c>from</c>..<c>to</c> inclusive (at most 92 days).</summary>
+    [HttpGet("cash-in-hand/daily")]
+    [ProducesResponseType(typeof(CashInHandDailyDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    public async Task<ActionResult<CashInHandDailyDto>> CashInHandDaily(
+        [FromQuery] DateOnly from, [FromQuery] DateOnly to, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _cash.GetDailyAsync(from, to, branchId, ct));
+
+    /// <summary>Record a deposit; posts GL (Debit bank / Credit cash). Rejected above the cash in hand.</summary>
+    [HttpPost]
+    [Authorize(Policy = NavPolicies.Prefix + "accounts.bank-deposits" + NavPolicies.ActionSeparator + NavPolicies.CreateAction)]
+    [ProducesResponseType(typeof(BankDepositDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    public async Task<ActionResult<BankDepositDto>> Create([FromBody] CreateBankDepositRequest request, CancellationToken ct)
+    {
+        var result = await _deposits.CreateAsync(request, ct);
+        return Created($"/api/v1/bank-deposits/{result.BankDepositId}", result);
+    }
+
+    /// <summary>Cancel a Posted deposit; posts the reversing GL entry and puts the cash back in hand.</summary>
+    [HttpPost("{bankDepositId:int}/cancel")]
+    [Authorize(Policy = NavPolicies.Prefix + "accounts.bank-deposits" + NavPolicies.ActionSeparator + NavPolicies.DeleteAction)]
+    [ProducesResponseType(typeof(BankDepositDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<BankDepositDto>> Cancel(int bankDepositId, [FromBody] CancelBankDepositRequest request, CancellationToken ct)
+        => Ok(await _deposits.CancelAsync(bankDepositId, request, ct));
+}

Backend/ERPCore/Controllers/DayEndReportController.cs

@@ -0,0 +1,31 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Dtos.Reports;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Day-End Sales Report — a day's sales, payments by method, expenses and income, and the
+/// same day-wise over a range for the income chart/PDF (docs/DAY_END_SALES_REPORT_PLAN.md §4).</summary>
+[Route("api/v1/day-end-report")]
+[Authorize(Policy = NavPolicies.Prefix + "sales.day-end-report")]
+public sealed class DayEndReportController : ApiControllerBase
+{
+    private readonly IDayEndReportService _reports;
+
+    public DayEndReportController(IDayEndReportService reports) => _reports = reports;
+
+    /// <summary>One business day (defaults to today in the report's time zone).</summary>
+    [HttpGet]
+    [ProducesResponseType(typeof(DayEndReportDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<DayEndReportDto>> GetDay([FromQuery] DateOnly? date, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _reports.GetDayAsync(date, branchId, ct));
+
+    /// <summary>Day-wise figures for <c>from</c>..<c>to</c> inclusive (at most 92 days).</summary>
+    [HttpGet("daily")]
+    [ProducesResponseType(typeof(DayEndDailyReportDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    public async Task<ActionResult<DayEndDailyReportDto>> GetDaily([FromQuery] DateOnly from, [FromQuery] DateOnly to, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _reports.GetDailyAsync(from, to, branchId, ct));
+}

Backend/ERPCore/Controllers/ExpenseSetupController.cs

@@ -0,0 +1,57 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Dtos.Expenses;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// Expense categories and titles (docs/EXPENSE_MODULE_PLAN.md §6 "Setup"). Reading is open to
+/// anyone with Accounts access (the expense form needs the lists); changes need the
+/// Expense Setup permission. Categories are the fixed seeded four — there is no create
+/// endpoint; only their active flag can change. Titles can be added under them.
+/// </summary>
+[Route("api/v1")]
+[Authorize(Policy = NavPolicies.Prefix + "accounts")]
+public sealed class ExpenseSetupController : ApiControllerBase
+{
+    private const string SetupPolicy = NavPolicies.Prefix + "accounts.expense-setup";
+
+    private readonly IExpenseSetupService _setup;
+
+    public ExpenseSetupController(IExpenseSetupService setup) => _setup = setup;
+
+    /// <summary>Categories, each with its titles, in display order.</summary>
+    [HttpGet("expense-categories")]
+    [ProducesResponseType(typeof(IReadOnlyList<ExpenseCategoryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<IReadOnlyList<ExpenseCategoryDto>>> List([FromQuery] bool includeInactive, CancellationToken ct)
+        => Ok(await _setup.ListAsync(includeInactive, ct));
+
+    [HttpPut("expense-categories/{expenseCategoryId:int}")]
+    [Authorize(Policy = SetupPolicy)]
+    [ProducesResponseType(typeof(ExpenseCategoryDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<ExpenseCategoryDto>> UpdateCategory(int expenseCategoryId, [FromBody] UpdateExpenseCategoryRequest request, CancellationToken ct)
+        => Ok(await _setup.UpdateCategoryAsync(expenseCategoryId, request, ct));
+
+    [HttpPost("expense-categories/{expenseCategoryId:int}/titles")]
+    [Authorize(Policy = SetupPolicy)]
+    [ProducesResponseType(typeof(ExpenseTitleDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<ExpenseTitleDto>> CreateTitle(int expenseCategoryId, [FromBody] CreateExpenseTitleRequest request, CancellationToken ct)
+    {
+        var dto = await _setup.CreateTitleAsync(expenseCategoryId, request, ct);
+        return Created($"/api/v1/expense-titles/{dto.ExpenseTitleId}", dto);
+    }
+
+    [HttpPut("expense-titles/{expenseTitleId:int}")]
+    [Authorize(Policy = SetupPolicy)]
+    [ProducesResponseType(typeof(ExpenseTitleDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<ExpenseTitleDto>> UpdateTitle(int expenseTitleId, [FromBody] UpdateExpenseTitleRequest request, CancellationToken ct)
+        => Ok(await _setup.UpdateTitleAsync(expenseTitleId, request, ct));
+}

Backend/ERPCore/Controllers/ExpensesController.cs

@@ -0,0 +1,127 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Expenses;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Business expense bills — draft, post (GL accrual), pay, cancel (docs/EXPENSE_MODULE_PLAN.md §6).</summary>
+[Route("api/v1/expenses")]
+[Authorize(Policy = NavPolicies.Prefix + "accounts.expenses")]
+public sealed class ExpensesController : ApiControllerBase
+{
+    private readonly IExpenseService _expenses;
+    private readonly IExpensePaymentService _payments;
+
+    public ExpensesController(IExpenseService expenses, IExpensePaymentService payments)
+    {
+        _expenses = expenses;
+        _payments = payments;
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<ExpenseSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<ExpenseSummaryDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] ExpenseStatus? status, [FromQuery] ExpensePaymentStatus? paymentStatus,
+        [FromQuery] int? categoryId, [FromQuery] int? titleId, [FromQuery] DateOnly? from, [FromQuery] DateOnly? to,
+        [FromQuery] bool overdueOnly, CancellationToken ct)
+        => Ok(await _expenses.ListAsync(query, new ExpenseListFilter(status, paymentStatus, categoryId, titleId, from, to, overdueOnly), ct));
+
+    /// <summary>Totals by category → title for Posted expenses dated in [from, to] (default: this month), plus unpaid/overdue position.</summary>
+    [HttpGet("summary")]
+    [ProducesResponseType(typeof(ExpenseSummaryReportDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<ExpenseSummaryReportDto>> Summary([FromQuery] DateOnly? from, [FromQuery] DateOnly? to, CancellationToken ct)
+        => Ok(await _expenses.GetSummaryAsync(from, to, ct));
+
+    [HttpGet("{expenseId:int}")]
+    [ProducesResponseType(typeof(ExpenseDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<ExpenseDto>> GetById(int expenseId, CancellationToken ct)
+    {
+        var result = await _expenses.GetAsync(expenseId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(ExpenseDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<ExpenseDto>> Create([FromBody] CreateExpenseRequest request, CancellationToken ct)
+    {
+        var result = await _expenses.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/expenses/{result.Value.ExpenseId}", result.Value);
+    }
+
+    [HttpPut("{expenseId:int}")]
+    [ProducesResponseType(typeof(ExpenseDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<ExpenseDto>> Update(int expenseId, [FromBody] UpdateExpenseRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _expenses.UpdateAsync(expenseId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    /// <summary>Draft only.</summary>
+    [HttpDelete("{expenseId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int expenseId, CancellationToken ct)
+    {
+        await _expenses.DeleteAsync(expenseId, ct);
+        return NoContent();
+    }
+
+    /// <summary>Accrue the expense to GL (Debit expense account / Credit Accrued Expenses).</summary>
+    [HttpPost("{expenseId:int}/post")]
+    [ProducesResponseType(typeof(ExpenseDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<ExpenseDto>> Post(int expenseId, CancellationToken ct)
+        => Ok(await _expenses.PostAsync(expenseId, ct));
+
+    /// <summary>Post a Draft and pay it, in full or partially, in one transaction; any remainder stays as the balance.</summary>
+    [HttpPost("{expenseId:int}/post-and-pay")]
+    [ProducesResponseType(typeof(ExpenseDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<ExpenseDto>> PostAndPay(int expenseId, [FromBody] CreateExpensePaymentRequest request, CancellationToken ct)
+        => Ok(await _payments.PostAndPayAsync(expenseId, request, ct));
+
+    /// <summary>Draft, or Posted with no payments (posts the reversing GL entry).</summary>
+    [HttpPost("{expenseId:int}/cancel")]
+    [ProducesResponseType(typeof(ExpenseDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<ExpenseDto>> Cancel(int expenseId, [FromBody] CancelExpenseRequest request, CancellationToken ct)
+        => Ok(await _expenses.CancelAsync(expenseId, request, ct));
+
+    /// <summary>Pay against the balance, in full or in installments; one GL entry per submission.</summary>
+    [HttpPost("{expenseId:int}/payments")]
+    [ProducesResponseType(typeof(IReadOnlyList<ExpensePaymentDto>), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<IReadOnlyList<ExpensePaymentDto>>> Pay(int expenseId, [FromBody] CreateExpensePaymentRequest request, CancellationToken ct)
+    {
+        var rows = await _payments.PayAsync(expenseId, request, ct);
+        return Created($"/api/v1/expenses/{expenseId}/payments", rows);
+    }
+
+    /// <summary>Payment history, newest first.</summary>
+    [HttpGet("{expenseId:int}/payments")]
+    [ProducesResponseType(typeof(IReadOnlyList<ExpensePaymentDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<IReadOnlyList<ExpensePaymentDto>>> ListPayments(int expenseId, CancellationToken ct)
+        => Ok(await _payments.ListAsync(expenseId, ct));
+}

Backend/ERPCore/Controllers/ItemsController.cs

@@ -57,6 +57,13 @@ public sealed class ItemsController : ApiControllerBase
         return result is null ? NotFound() : Ok(result);
     }
 
+    /// <summary>The item's latest posted GRN receipts (default 5, newest first): unit cost, discount, net cost, vendor.</summary>
+    [HttpGet("{itemId:int}/purchase-prices")]
+    [ProducesResponseType(typeof(IReadOnlyList<ItemPurchasePriceDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<IReadOnlyList<ItemPurchasePriceDto>>> PurchasePrices(int itemId, [FromQuery] int take, CancellationToken ct)
+        => Ok(await _items.GetPurchasePricesAsync(itemId, take <= 0 ? 5 : take, ct));
+
     /// <summary>Get a single item; returns an <c>ETag</c> for optimistic concurrency.</summary>
     [HttpGet("{itemId:int}")]
     [ProducesResponseType(typeof(ItemDetailDto), StatusCodes.Status200OK)]

Backend/ERPCore/Controllers/PriceAdjustmentsController.cs

@@ -0,0 +1,89 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Approvals;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Products;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// Selling-price change requests (docs/DUAL_APPROVAL_PLAN.md §6.4). Requesting needs Create on
+/// <c>products.price-adjustments</c>, deciding needs Approve; an item's applied price history is
+/// readable by anyone who can see Products.
+/// </summary>
+[Route("api/v1/price-adjustments")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
+public sealed class PriceAdjustmentsController : ApiControllerBase
+{
+    private const string Screen = NavPolicies.Prefix + "products.price-adjustments";
+    private const string CreatePolicy = Screen + NavPolicies.ActionSeparator + NavPolicies.CreateAction;
+    private const string ApprovePolicy = Screen + NavPolicies.ActionSeparator + NavPolicies.ApproveAction;
+
+    private readonly IPriceAdjustmentService _prices;
+
+    public PriceAdjustmentsController(IPriceAdjustmentService prices) => _prices = prices;
+
+    [HttpGet]
+    [Authorize(Policy = Screen)]
+    [ProducesResponseType(typeof(PagedResponse<PriceAdjustmentSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<PriceAdjustmentSummaryDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] PriceAdjustmentStatus? status, [FromQuery] int? itemId, CancellationToken ct)
+        => Ok(await _prices.ListAsync(query, status, itemId, ct));
+
+    [HttpGet("{priceAdjustmentId:int}")]
+    [Authorize(Policy = Screen)]
+    [ProducesResponseType(typeof(PriceAdjustmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<PriceAdjustmentDto>> GetById(int priceAdjustmentId, CancellationToken ct)
+    {
+        var dto = await _prices.GetAsync(priceAdjustmentId, ct);
+        return dto is null ? NotFound() : Ok(dto);
+    }
+
+    /// <summary>Request new selling prices for one or more items.</summary>
+    [HttpPost]
+    [Authorize(Policy = CreatePolicy)]
+    [ProducesResponseType(typeof(PriceAdjustmentDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PriceAdjustmentDto>> Create([FromBody] CreatePriceAdjustmentRequest request, CancellationToken ct)
+    {
+        var dto = await _prices.CreateAsync(request, ct);
+        return Created($"/api/v1/price-adjustments/{dto.PriceAdjustmentId}", dto);
+    }
+
+    /// <summary>Give the next approval; the final one applies the prices.</summary>
+    [HttpPost("{priceAdjustmentId:int}/approve")]
+    [Authorize(Policy = ApprovePolicy)]
+    [ProducesResponseType(typeof(PriceAdjustmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PriceAdjustmentDto>> Approve(int priceAdjustmentId, [FromBody] ApproveRequest? request, CancellationToken ct)
+        => Ok(await _prices.ApproveAsync(priceAdjustmentId, request?.Comment, ct));
+
+    [HttpPost("{priceAdjustmentId:int}/reject")]
+    [Authorize(Policy = ApprovePolicy)]
+    [ProducesResponseType(typeof(PriceAdjustmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PriceAdjustmentDto>> Reject(int priceAdjustmentId, [FromBody] RejectRequest request, CancellationToken ct)
+        => Ok(await _prices.RejectAsync(priceAdjustmentId, request.Reason, ct));
+
+    /// <summary>The requester withdraws a pending request.</summary>
+    [HttpPost("{priceAdjustmentId:int}/cancel")]
+    [Authorize(Policy = Screen)]
+    [ProducesResponseType(typeof(PriceAdjustmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PriceAdjustmentDto>> Cancel(int priceAdjustmentId, CancellationToken ct)
+        => Ok(await _prices.CancelAsync(priceAdjustmentId, ct));
+
+    /// <summary>Every applied price change for an item, newest first, with who approved it.</summary>
+    [HttpGet("/api/v1/items/{itemId:int}/price-history")]
+    [ProducesResponseType(typeof(IReadOnlyList<ItemPriceHistoryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<IReadOnlyList<ItemPriceHistoryDto>>> ItemHistory(int itemId, CancellationToken ct)
+        => Ok(await _prices.ItemHistoryAsync(itemId, ct));
+}

Backend/ERPCore/Controllers/StockAdjustmentsController.cs

@@ -1,5 +1,7 @@
 using Microsoft.AspNetCore.Authorization;
+using ERPCore.Domain.Enums;
 using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Approvals;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Stock;
 using ERPCore.Services.Interfaces;
@@ -7,23 +9,30 @@ using Microsoft.AspNetCore.Mvc;
 
 namespace ERPCore.Controllers;
 
-/// <summary>Stock-adjustment endpoints (docs/11 §5.5).</summary>
+/// <summary>
+/// Stock-adjustment endpoints (docs/11 §5.5). Creating submits a request; it moves stock once
+/// approved (docs/DUAL_APPROVAL_PLAN.md §5.4). Approving or rejecting needs the Approve action on
+/// <c>stock.adjustments</c>; the two-person rules are enforced by the service.
+/// </summary>
 [Route("api/v1/stock-adjustments")]
 [Authorize(Policy = NavPolicies.Prefix + "stock")]
 public sealed class StockAdjustmentsController : ApiControllerBase
 {
+    private const string ApprovePolicy = NavPolicies.Prefix + "stock.adjustments" + NavPolicies.ActionSeparator + NavPolicies.ApproveAction;
+
     private readonly IAdjustmentService _adjustments;
 
     public StockAdjustmentsController(IAdjustmentService adjustments) => _adjustments = adjustments;
 
-    /// <summary>List posted adjustments, newest first.</summary>
+    /// <summary>List adjustments (posted and requests), newest first.</summary>
     [HttpGet]
     [ProducesResponseType(typeof(PagedResponse<AdjustmentSummaryDto>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedResponse<AdjustmentSummaryDto>>> List(
-        [FromQuery] PageQuery query, [FromQuery] int? warehouseId, [FromQuery] int? branchId, [FromQuery] int? reasonCodeId, CancellationToken ct)
-        => Ok(await _adjustments.ListAsync(query, warehouseId, branchId, reasonCodeId, ct));
+        [FromQuery] PageQuery query, [FromQuery] int? warehouseId, [FromQuery] int? branchId, [FromQuery] int? reasonCodeId,
+        [FromQuery] AdjustmentStatus? status, CancellationToken ct)
+        => Ok(await _adjustments.ListAsync(query, warehouseId, branchId, reasonCodeId, status, ct));
 
-    /// <summary>Get one adjustment with its lines and the ledger entries it posted.</summary>
+    /// <summary>Get one adjustment with its lines, approval trail and the ledger entries it posted.</summary>
     [HttpGet("{adjustmentId:int}")]
     [ProducesResponseType(typeof(AdjustmentDto), StatusCodes.Status200OK)]
     [ProducesResponseType(StatusCodes.Status404NotFound)]
@@ -33,7 +42,7 @@ public sealed class StockAdjustmentsController : ApiControllerBase
         return dto is null ? NotFound() : Ok(dto);
     }
 
-    /// <summary>Create + auto-post an adjustment (mandatory reason code; decrease FIFO-consumes).</summary>
+    /// <summary>Submit an adjustment (mandatory reason code). Posts at once only when approvals are off.</summary>
     [HttpPost]
     [ProducesResponseType(typeof(AdjustmentDto), StatusCodes.Status201Created)]
     [ProducesResponseType(StatusCodes.Status400BadRequest)]
@@ -44,4 +53,29 @@ public sealed class StockAdjustmentsController : ApiControllerBase
         var dto = await _adjustments.CreateAsync(request, ct);
         return Created($"/api/v1/stock-adjustments/{dto.AdjustmentId}", dto);
     }
+
+    /// <summary>Give the next approval. The final one posts the stock movement and GL.</summary>
+    [HttpPost("{adjustmentId:int}/approve")]
+    [Authorize(Policy = ApprovePolicy)]
+    [ProducesResponseType(typeof(AdjustmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<AdjustmentDto>> Approve(int adjustmentId, [FromBody] ApproveRequest? request, CancellationToken ct)
+        => Ok(await _adjustments.ApproveAsync(adjustmentId, request?.Comment, ct));
+
+    [HttpPost("{adjustmentId:int}/reject")]
+    [Authorize(Policy = ApprovePolicy)]
+    [ProducesResponseType(typeof(AdjustmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<AdjustmentDto>> Reject(int adjustmentId, [FromBody] RejectRequest request, CancellationToken ct)
+        => Ok(await _adjustments.RejectAsync(adjustmentId, request.Reason, ct));
+
+    /// <summary>The requester withdraws a pending request.</summary>
+    [HttpPost("{adjustmentId:int}/cancel")]
+    [ProducesResponseType(typeof(AdjustmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<AdjustmentDto>> Cancel(int adjustmentId, CancellationToken ct)
+        => Ok(await _adjustments.CancelAsync(adjustmentId, ct));
 }