fixers of day end sales and sales

Reviewed-on: #90

.gitea/workflows/ci-cd.yml

@@ -0,0 +1,92 @@
+name: CI/CD - ERP Core Monorepo
+
+on:
+  pull_request:
+    branches:
+      - production
+    types:
+      - closed
+
+jobs:
+  build-and-deploy-backend:
+    name: Build & Deploy Backend
+    runs-on: linux
+    if: github.event.pull_request.merged == true
+    steps:
+      - name: Checkout code
+        run: |
+          git clone \
+            --depth 1 \
+            --branch production \
+            https://oauth2:${{ secrets.ERPCORE }}@gitea.hexdive.com/New_REP_SYSTEM/ERP-core.git \
+            .
+      - name: Restore
+        run: dotnet restore Backend/ERPCore.sln
+      - name: Publish
+        run: |
+          rm -rf /tmp/erpcore-deploy
+          mkdir -p /tmp/erpcore-deploy
+          dotnet publish Backend/ERPCore/ERPCore.csproj \
+            -c Release \
+            -r linux-x64 \
+            --self-contained true \
+            -o /tmp/erpcore-deploy
+      - name: Stop service
+        run: systemctl stop erpcore.service
+      - name: Copy to deploy folder
+        run: |
+          mkdir -p /home/erp/core/publish
+          rm -rf /home/erp/core/publish/*
+          cp -r /tmp/erpcore-deploy/* /home/erp/core/publish/
+      - name: Fix ownership and permissions
+        run: |
+          chown -R erpuser:erpuser /home/erp/core/publish
+          find /home/erp/core/publish -type d -exec chmod 755 {} +
+          find /home/erp/core/publish -type f -exec chmod 644 {} +
+          chmod +x /home/erp/core/publish/ERPCore
+      - name: Restart service
+        run: systemctl restart erpcore.service
+      - name: Verify
+        run: |
+          systemctl is-active erpcore.service && echo "✅ Service running" || echo "❌ Service failed"
+
+  build-and-deploy-frontend:
+    name: Build & Deploy Frontend
+    runs-on: linux
+    if: github.event.pull_request.merged == true
+    steps:
+      - name: Checkout code
+        run: |
+          git clone \
+            --depth 1 \
+            --branch production \
+            https://oauth2:${{ secrets.ERPCORE }}@gitea.hexdive.com/New_REP_SYSTEM/ERP-core.git \
+            .
+      - name: Build Docker image
+        run: |
+          docker build --progress=plain --no-cache \
+            -t erpcore-frontend:latest \
+            ./Frontend/erp-system
+      - name: Stop & remove existing container
+        run: |
+          docker stop erpcore-frontend 2>/dev/null || true
+          docker rm erpcore-frontend 2>/dev/null || true
+      - name: Start container
+        run: |
+          docker run -d \
+            --name erpcore-frontend \
+            -p 6702:6702 \
+            --add-host=host.docker.internal:host-gateway \
+            -e BACKEND_ORIGIN=http://host.docker.internal:6701 \
+            --restart unless-stopped \
+            --memory="512m" \
+            --cpus="1.0" \
+            --cap-drop ALL \
+            --security-opt no-new-privileges \
+            erpcore-frontend:latest
+      - name: Remove old images
+        run: docker image prune -f
+      - name: Verify
+        run: |
+          docker ps --filter name=erpcore-frontend --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}" \
+            | grep erpcore-frontend && echo "✅ Container running" || echo "❌ Container failed"

.gitignore

@@ -30,9 +30,10 @@ yarn-error.log*
 Thumbs.db
 .idea/
 
-# ── Migrations ─────────────────────────────────────────────────────────
-# New EF Core migrations are not committed. Note the 4 migrations already in
-# Backend/ERPCore/Infra/Persistence/Migrations/ stay tracked — .gitignore does
-# not apply to tracked files — so edits to those still get committed as normal.
-# Untracking them too takes `git rm --cached`.
-**/Migrations/
+# ── Playwright E2E (Testing/e2e) ──────────────────────────────────────
+Testing/e2e/playwright-report/
+Testing/e2e/test-results/
+Testing/e2e/.auth/
+Testing/e2e/blob-report/
+
+

Backend/ERPCore.Tests/ERPCore.Tests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="10.0.9" />
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ERPCore\ERPCore.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+</Project>

Backend/ERPCore.Tests/NotificationConfigServiceTests.cs

@@ -0,0 +1,152 @@
+using ERPCore.Domain.Entities;
+using ERPCore.Domain.Notifications;
+using ERPCore.Repositories;
+using ERPCore.Services;
+using ERPCore.System.Errors;
+using ERPCore.Tests.TestSupport;
+using Microsoft.EntityFrameworkCore;
+
+namespace ERPCore.Tests;
+
+public class NotificationConfigServiceTests
+{
+    [Fact]
+    public async Task GetAsync_MergesSavedValuesWithDiscoveredModules()
+    {
+        var dbName = Guid.NewGuid().ToString("N");
+        await using var db = NotificationConfigTestSupport.CreateContext(dbName);
+        await NotificationConfigTestSupport.SeedAsync(db, new[]
+        {
+            new NotificationConfigModule
+            {
+                ModuleKey = "sale.create",
+                EmailEnabled = true,
+                SmsEnabled = false,
+                InAppEnabled = true
+            }
+        });
+
+        var service = CreateService(db);
+
+        var result = await service.GetAsync();
+
+        Assert.Equal(7u, result.RowVersion);
+        Assert.Contains(result.Value.Modules, m => m.ModuleKey == "sale.create" && m.EmailEnabled && !m.SmsEnabled && m.InAppEnabled);
+        Assert.Contains(result.Value.Modules, m => m.ModuleKey == "grn.confirmed" && !m.EmailEnabled && !m.SmsEnabled && !m.InAppEnabled);
+    }
+
+    [Fact]
+    public async Task UpdateAsync_PersistsEmptyAndMultiChannelSelections()
+    {
+        var dbName = Guid.NewGuid().ToString("N");
+        await using var db = NotificationConfigTestSupport.CreateContext(dbName);
+        await NotificationConfigTestSupport.SeedAsync(db);
+
+        var service = CreateService(db);
+        var catalog = new NotificationModuleCatalog();
+        var request = new ERPCore.Dtos.Notifications.UpdateNotificationConfigRequest
+        {
+            Modules = catalog.GetAll().Select((module, index) => new ERPCore.Dtos.Notifications.UpdateNotificationModuleRequest
+            {
+                ModuleKey = module.Key,
+                EmailEnabled = index == 0,
+                SmsEnabled = index == 1,
+                InAppEnabled = index == 1
+            }).ToList()
+        };
+
+        var updated = await service.UpdateAsync(request, 7);
+
+        Assert.Equal(7u, updated.RowVersion);
+        Assert.Contains(updated.Value.Modules, m => m.ModuleKey == catalog.GetAll()[0].Key && m.EmailEnabled && !m.SmsEnabled && !m.InAppEnabled);
+        Assert.Contains(updated.Value.Modules, m => m.ModuleKey == catalog.GetAll()[1].Key && !m.EmailEnabled && m.SmsEnabled && m.InAppEnabled);
+
+        await using var verifyDb = NotificationConfigTestSupport.CreateContext(dbName);
+        var persisted = await verifyDb.NotificationConfigModules.AsNoTracking().ToListAsync();
+        Assert.Contains(persisted, m => m.ModuleKey == catalog.GetAll()[0].Key && m.EmailEnabled && !m.SmsEnabled && !m.InAppEnabled);
+        Assert.Contains(persisted, m => m.ModuleKey == catalog.GetAll()[1].Key && !m.EmailEnabled && m.SmsEnabled && m.InAppEnabled);
+    }
+
+    [Fact]
+    public async Task ResolveEnabledChannelsAsync_ReturnsEmptyWhenNothingEnabled()
+    {
+        var dbName = Guid.NewGuid().ToString("N");
+        await using var db = NotificationConfigTestSupport.CreateContext(dbName);
+        await NotificationConfigTestSupport.SeedAsync(db, new[]
+        {
+            new NotificationConfigModule
+            {
+                ModuleKey = "sale.create",
+                EmailEnabled = false,
+                SmsEnabled = false,
+                InAppEnabled = false
+            }
+        });
+
+        var service = CreateService(db);
+
+        var channels = await service.ResolveEnabledChannelsAsync("sale.create");
+
+        Assert.Empty(channels);
+    }
+
+    [Fact]
+    public async Task ResolveEnabledChannelsAsync_ReturnsMultipleChannels()
+    {
+        var dbName = Guid.NewGuid().ToString("N");
+        await using var db = NotificationConfigTestSupport.CreateContext(dbName);
+        await NotificationConfigTestSupport.SeedAsync(db, new[]
+        {
+            new NotificationConfigModule
+            {
+                ModuleKey = "sale.create",
+                EmailEnabled = true,
+                SmsEnabled = true,
+                InAppEnabled = false
+            }
+        });
+
+        var service = CreateService(db);
+
+        var channels = await service.ResolveEnabledChannelsAsync("sale.create");
+
+        Assert.Equal(new[] { NotificationChannel.Email, NotificationChannel.Sms }, channels);
+    }
+
+    [Fact]
+    public async Task UpdateAsync_MapsConcurrencyFailuresToDomainException()
+    {
+        var dbName = Guid.NewGuid().ToString("N");
+        await using var db = NotificationConfigTestSupport.CreateContext(dbName);
+        await NotificationConfigTestSupport.SeedAsync(db);
+
+        var service = CreateService(db, new ThrowingUnitOfWork());
+        var catalog = new NotificationModuleCatalog();
+        var request = new ERPCore.Dtos.Notifications.UpdateNotificationConfigRequest
+        {
+            Modules = catalog.GetAll().Select(module => new ERPCore.Dtos.Notifications.UpdateNotificationModuleRequest
+            {
+                ModuleKey = module.Key,
+                EmailEnabled = false,
+                SmsEnabled = false,
+                InAppEnabled = false
+            }).ToList()
+        };
+
+        var ex = await Assert.ThrowsAsync<DomainException>(() => service.UpdateAsync(request, 7));
+        Assert.Equal(ErrorCodes.ConcurrencyConflict, ex.Code);
+        Assert.Equal(412, ex.StatusCode);
+    }
+
+    private static NotificationConfigService CreateService(ERPCore.Infra.Persistence.ErpDbContext db, ERPCore.Infra.UoW.IUnitOfWork? uow = null)
+    {
+        var configRepo = new Repository<NotificationConfig>(db);
+        var moduleRepo = new Repository<NotificationConfigModule>(db);
+        return new NotificationConfigService(
+            configRepo,
+            moduleRepo,
+            new NotificationModuleCatalog(),
+            new TestCurrentUser(),
+            uow ?? new ERPCore.Infra.UoW.UnitOfWork(db));
+    }
+}

Backend/ERPCore.Tests/NotificationModuleCatalogTests.cs

@@ -0,0 +1,17 @@
+using ERPCore.Services;
+
+namespace ERPCore.Tests;
+
+public class NotificationModuleCatalogTests
+{
+    [Fact]
+    public void GetAll_ReturnsStableUniqueModuleKeys()
+    {
+        var catalog = new NotificationModuleCatalog();
+
+        Assert.NotEmpty(catalog.GetAll());
+        Assert.Contains(catalog.GetAll(), m => m.Key == "sale.create");
+        Assert.Contains(catalog.GetAll(), m => m.Key == "grn.confirmed");
+        Assert.Equal(catalog.GetAll().Count, catalog.GetAll().Select(m => m.Key).Distinct(StringComparer.OrdinalIgnoreCase).Count());
+    }
+}

Backend/ERPCore.Tests/TestSupport/NotificationConfigTestSupport.cs

@@ -0,0 +1,70 @@
+using ERPCore.Domain.Entities;
+using ERPCore.Infra.Auth;
+using ERPCore.Infra.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Storage;
+
+namespace ERPCore.Tests.TestSupport;
+
+internal sealed class TestCurrentUser : ICurrentUser
+{
+    public string UserId => "system";
+    public int AuditUserId => User.SystemUserId;
+    public bool IsAuthenticated => false;
+}
+
+internal sealed class ThrowingUnitOfWork : ERPCore.Infra.UoW.IUnitOfWork
+{
+    public Task<int> SaveChangesAsync(CancellationToken ct = default)
+        => throw new DbUpdateConcurrencyException("Test concurrency conflict.");
+
+    public Task ExecuteInTransactionAsync(Func<CancellationToken, Task> action, CancellationToken ct = default)
+        => throw new NotSupportedException();
+
+    public Task<T> ExecuteInTransactionAsync<T>(Func<CancellationToken, Task<T>> action, CancellationToken ct = default)
+        => throw new NotSupportedException();
+}
+
+internal static class NotificationConfigTestSupport
+{
+    private static readonly InMemoryDatabaseRoot Root = new();
+
+    public static ErpDbContext CreateContext(string name)
+    {
+        var options = new DbContextOptionsBuilder<ErpDbContext>()
+            .UseInMemoryDatabase(name, Root)
+            .Options;
+
+        return new ErpDbContext(options, new TestCurrentUser());
+    }
+
+    public static async Task SeedAsync(ErpDbContext db, IEnumerable<NotificationConfigModule>? modules = null)
+    {
+        db.Users.Add(new User
+        {
+            UserId = User.SystemUserId,
+            Username = "system",
+            DisplayName = "System"
+        });
+
+        var config = new NotificationConfig
+        {
+            NotificationConfigId = NotificationConfig.SingletonId,
+            UpdatedBy = User.SystemUserId,
+            UpdatedAt = DateTime.UtcNow,
+            RowVersion = 7,
+        };
+
+        if (modules is not null)
+        {
+            foreach (var module in modules)
+            {
+                module.NotificationConfigId = NotificationConfig.SingletonId;
+                config.Modules.Add(module);
+            }
+        }
+
+        db.NotificationConfig.Add(config);
+        await db.SaveChangesAsync();
+    }
+}

Backend/ERPCore/Controllers/AuthController.cs

@@ -27,13 +27,15 @@ public sealed class AuthController : ControllerBase
     private readonly IAuthRecoveryService _recovery;
     private readonly IAuthAltService _alt;
     private readonly IRoleService _roles;
+    private readonly IAuditService _audit;
 
-    public AuthController(IAuthUserService users, IAuthRecoveryService recovery, IAuthAltService alt, IRoleService roles)
+    public AuthController(IAuthUserService users, IAuthRecoveryService recovery, IAuthAltService alt, IRoleService roles, IAuditService audit)
     {
         _users = users;
         _recovery = recovery;
         _alt = alt;
         _roles = roles;
+        _audit = audit;
     }
 
     /// <summary>
@@ -68,6 +70,7 @@ public sealed class AuthController : ControllerBase
     {
         var result = await _users.LoginAsync(request, ct);
         AuthCookieWriter.WriteSession(Response, result.AccessToken, result.RefreshToken, result.Body.ExpiresIn);
+        if (result.Body.User?.UserId is Guid authUserId) await _audit.RecordLoginAsync(authUserId, ClientIp(), ClientUserAgent(), ct);
         return Ok(result.Body);
     }
 
@@ -78,9 +81,13 @@ public sealed class AuthController : ControllerBase
     {
         var result = await _users.VerifyOtpForLoginAsync(request, ct);
         AuthCookieWriter.WriteSession(Response, result.AccessToken, result.RefreshToken, result.Body.ExpiresIn);
+        if (result.Body.User?.UserId is Guid authUserId) await _audit.RecordLoginAsync(authUserId, ClientIp(), ClientUserAgent(), ct);
         return Ok(result.Body);
     }
 
+    private string? ClientIp() => HttpContext.Connection.RemoteIpAddress?.ToString();
+    private string? ClientUserAgent() => Request.Headers.UserAgent.ToString() is { Length: > 0 } ua ? ua : null;
+
     [HttpPost("refresh-token")]
     [AllowAnonymous]
     [ProducesResponseType(typeof(AuthSessionResponse), StatusCodes.Status200OK)]

Backend/ERPCore/Controllers/BranchConfigController.cs

@@ -0,0 +1,47 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Config;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// Branch configuration endpoints — the singleton toggle for whether this deployment
+/// requires a branch on Employee/Warehouse records at all.
+/// <para>
+/// <b>Authorization:</b> writes are admitted by the inherited ERP door policy only, same
+/// Phase-1 posture as <see cref="ProductConfigController"/> — any ERP-admitted user can
+/// flip this flag until per-endpoint RBAC lands.
+/// </para>
+/// </summary>
+[Route("api/v1/branch-config")]
+[Authorize(Policy = NavPolicies.Prefix + "settings")]
+public sealed class BranchConfigController : ApiControllerBase
+{
+    private readonly IBranchConfigService _config;
+
+    public BranchConfigController(IBranchConfigService config) => _config = config;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(BranchConfigDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<BranchConfigDto>> Get(CancellationToken ct)
+    {
+        var result = await _config.GetAsync(ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPut]
+    [ProducesResponseType(typeof(BranchConfigDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<BranchConfigDto>> Update(
+        [FromBody] UpdateBranchConfigRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _config.UpdateAsync(request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+}

Backend/ERPCore/Controllers/BrandsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Brands;
 using ERPCore.Dtos.Common;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Brand master endpoints (docs/11-BACKEND-PHASE1.md §2.6).</summary>
 [Route("api/v1/brands")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
 public sealed class BrandsController : ApiControllerBase
 {
     private readonly IBrandService _brands;

Backend/ERPCore/Controllers/BundleSalesController.cs

@@ -0,0 +1,91 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Sales;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/bundle-sales")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class BundleSalesController : ApiControllerBase
+{
+    private readonly IBundleSaleService _bundles;
+
+    public BundleSalesController(IBundleSaleService bundles) => _bundles = bundles;
+
+    [HttpGet("templates")]
+    [ProducesResponseType(typeof(PagedResponse<BundleSaleTemplateSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<BundleSaleTemplateSummaryDto>>> ListTemplates(
+        [FromQuery] PageQuery query,
+        CancellationToken ct)
+        => Ok(await _bundles.ListTemplatesAsync(query, ct));
+
+    [HttpGet("templates/{bundleSaleTemplateId:int}")]
+    [ProducesResponseType(typeof(BundleSaleTemplateDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<BundleSaleTemplateDto>> GetTemplate(int bundleSaleTemplateId, CancellationToken ct)
+    {
+        var result = await _bundles.GetTemplateAsync(bundleSaleTemplateId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    [HttpPost("templates")]
+    [ProducesResponseType(typeof(BundleSaleTemplateDto), StatusCodes.Status201Created)]
+    public async Task<ActionResult<BundleSaleTemplateDto>> CreateTemplate([FromBody] CreateBundleSaleTemplateRequest request, CancellationToken ct)
+    {
+        var result = await _bundles.CreateTemplateAsync(request, ct);
+        return Created($"/api/v1/bundle-sales/templates/{result.BundleSaleTemplateId}", result);
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<BundleSaleSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<BundleSaleSummaryDto>>> List(
+        [FromQuery] PageQuery query,
+        [FromQuery] BundleSaleStatus? status,
+        [FromQuery] int? customerId,
+        [FromQuery] int? warehouseId,
+        CancellationToken ct)
+        => Ok(await _bundles.ListAsync(query, status, customerId, warehouseId, ct));
+
+    [HttpGet("{bundleSaleId:int}")]
+    [ProducesResponseType(typeof(BundleSaleDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<BundleSaleDto>> GetById(int bundleSaleId, CancellationToken ct)
+    {
+        var result = await _bundles.GetAsync(bundleSaleId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    [HttpGet("{bundleSaleId:int}/posting-check")]
+    [ProducesResponseType(typeof(BundleSalePostingCheckDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<BundleSalePostingCheckDto>> PostingCheck(int bundleSaleId, CancellationToken ct)
+        => Ok(await _bundles.CheckPostingAsync(bundleSaleId, ct));
+
+    [HttpPost]
+    [ProducesResponseType(typeof(BundleSaleDto), StatusCodes.Status201Created)]
+    public async Task<ActionResult<BundleSaleDto>> Create([FromBody] CreateBundleSaleRequest request, CancellationToken ct)
+    {
+        var result = await _bundles.CreateAsync(request, ct);
+        return Created($"/api/v1/bundle-sales/{result.BundleSaleId}", result);
+    }
+
+    [HttpPut("{bundleSaleId:int}")]
+    [ProducesResponseType(typeof(BundleSaleDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<BundleSaleDto>> Update(int bundleSaleId, [FromBody] UpdateBundleSaleRequest request, CancellationToken ct)
+    {
+        return Ok(await _bundles.UpdateAsync(bundleSaleId, request, ct));
+    }
+
+    [HttpPost("{bundleSaleId:int}/post")]
+    [ProducesResponseType(typeof(BundleSaleDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<BundleSaleDto>> Post(int bundleSaleId, CancellationToken ct)
+        => Ok(await _bundles.PostAsync(bundleSaleId, ct));
+
+    [HttpPost("{bundleSaleId:int}/cancel")]
+    [ProducesResponseType(typeof(BundleSaleDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<BundleSaleDto>> Cancel(int bundleSaleId, CancellationToken ct)
+        => Ok(await _bundles.CancelAsync(bundleSaleId, ct));
+}

Backend/ERPCore/Controllers/CategoriesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Categories;
 using ERPCore.Dtos.Common;
@@ -12,6 +14,7 @@ namespace ERPCore.Controllers;
 /// <c>?tree=true</c> parameter is gone along with the self-nesting model.
 /// </summary>
 [Route("api/v1/categories")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
 public sealed class CategoriesController : ApiControllerBase
 {
     private readonly ICategoryService _categories;

Backend/ERPCore/Controllers/CustomersController.cs

@@ -0,0 +1,74 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Customers;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Customer master endpoints for Phase 1 sales.</summary>
+[Route("api/v1/customers")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class CustomersController : ApiControllerBase
+{
+    private readonly ICustomerService _customers;
+
+    public CustomersController(ICustomerService customers) => _customers = customers;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<CustomerDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<CustomerDto>>> List(
+        [FromQuery] PageQuery query,
+        [FromQuery] EntityStatus? status,
+        [FromQuery] CustomerType? customerType,
+        CancellationToken ct,
+        [FromQuery] bool includeCashCustomer = false,
+        [FromQuery] int? branchId = null)
+        => Ok(await _customers.ListAsync(query, status, customerType, includeCashCustomer, branchId, ct));
+
+    [HttpGet("{customerId:int}")]
+    [ProducesResponseType(typeof(CustomerDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<CustomerDto>> GetById(int customerId, CancellationToken ct)
+    {
+        var result = await _customers.GetAsync(customerId, ct);
+        if (result is null) return NotFound();
+
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(CustomerDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<CustomerDto>> Create([FromBody] CreateCustomerRequest request, CancellationToken ct)
+    {
+        var result = await _customers.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/customers/{result.Value.CustomerId}", result.Value);
+    }
+
+    [HttpPut("{customerId:int}")]
+    [ProducesResponseType(typeof(CustomerDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<CustomerDto>> Update(int customerId, [FromBody] UpdateCustomerRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _customers.UpdateAsync(customerId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{customerId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int customerId, [FromBody] UpdateCustomerStatusRequest request, CancellationToken ct)
+    {
+        await _customers.SetStatusAsync(customerId, request.Status, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/DashboardController.cs

@@ -0,0 +1,23 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Dashboard;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Dashboard overview stats — cross-domain counts, not a stored entity.</summary>
+[Route("api/v1/dashboard")]
+[Authorize(Policy = NavPolicies.Prefix + "dashboard")]
+public sealed class DashboardController : ApiControllerBase
+{
+    private readonly IDashboardService _dashboard;
+
+    public DashboardController(IDashboardService dashboard) => _dashboard = dashboard;
+
+    /// <summary>Aggregate counts for stock, GRN, and procurement.</summary>
+    [HttpGet("stats")]
+    [ProducesResponseType(typeof(DashboardStatsDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<DashboardStatsDto>> GetStats([FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _dashboard.GetStatsAsync(branchId, ct));
+}

Backend/ERPCore/Controllers/FreeIssuesController.cs

@@ -0,0 +1,81 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Sales;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// Thin API alias for free-issue handling. Free issues are modeled as sales slips
+/// with line-level <c>IsFreeIssue</c>/<c>FreeQty</c> flags, so this controller reuses
+/// the existing sales-slip CRUD surface under a more business-friendly route.
+/// </summary>
+[Route("api/v1/free-issues")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class FreeIssuesController : ApiControllerBase
+{
+    private readonly ISalesSlipService _slips;
+
+    public FreeIssuesController(ISalesSlipService slips) => _slips = slips;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<FreeIssueSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<FreeIssueSummaryDto>>> List(
+        [FromQuery] PageQuery query,
+        [FromQuery] SalesSlipStatus? status,
+        [FromQuery] int? customerId,
+        [FromQuery] int? warehouseId,
+        CancellationToken ct)
+        => Ok(await _slips.ListFreeIssuesAsync(query, status, customerId, warehouseId, ct));
+
+    [HttpGet("{freeIssueId:int}")]
+    [ProducesResponseType(typeof(FreeIssueDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<FreeIssueDto>> GetById(int freeIssueId, CancellationToken ct)
+    {
+        var result = await _slips.GetFreeIssueAsync(freeIssueId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpGet("{freeIssueId:int}/posting-check")]
+    [ProducesResponseType(typeof(SalesSlipPostingCheckDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesSlipPostingCheckDto>> PostingCheck(int freeIssueId, CancellationToken ct)
+        => Ok(await _slips.CheckPostingAsync(freeIssueId, ct));
+
+    [HttpPost]
+    [ProducesResponseType(typeof(FreeIssueDto), StatusCodes.Status201Created)]
+    public async Task<ActionResult<FreeIssueDto>> Create([FromBody] CreateSalesSlipRequest request, CancellationToken ct)
+    {
+        var result = await _slips.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/free-issues/{result.Value.SalesSlipId}", result.Value);
+    }
+
+    [HttpPut("{freeIssueId:int}")]
+    [ProducesResponseType(typeof(FreeIssueDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<FreeIssueDto>> Update(int freeIssueId, [FromBody] UpdateSalesSlipRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _slips.UpdateAsync(freeIssueId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost("{freeIssueId:int}/post")]
+    [ProducesResponseType(typeof(FreeIssueDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<FreeIssueDto>> Post(int freeIssueId, CancellationToken ct)
+        => Ok(await _slips.PostAsync(freeIssueId, ct));
+
+    [HttpPost("{freeIssueId:int}/cancel")]
+    [ProducesResponseType(typeof(FreeIssueDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<FreeIssueDto>> Cancel(int freeIssueId, CancellationToken ct)
+        => Ok(await _slips.CancelAsync(freeIssueId, ct));
+}

Backend/ERPCore/Controllers/GeneralLedgerController.cs

@@ -0,0 +1,46 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// Generic reverse proxy into the external General Ledger service — forwards every
+/// method/path/query/body under this prefix verbatim via
+/// <see cref="IGeneralLedgerService"/> and returns GL's response (status, content-type,
+/// body) unchanged. No endpoint-specific shape lives here; see
+/// docs/12-GENERAL-LEDGER-INTEGRATION.md for the full GL contract and what this proxy
+/// does and doesn't do. Gated by the same ERP door policy as every other v1 endpoint
+/// (<see cref="ApiControllerBase"/>) — the shared GL API key is attached server-side
+/// only and is never exposed to the frontend.
+/// </summary>
+[Route("api/v1/gl")]
+[Authorize(Policy = NavPolicies.Prefix + "ledgers")]
+public sealed class GeneralLedgerController : ApiControllerBase
+{
+    private readonly IGeneralLedgerService _gl;
+
+    public GeneralLedgerController(IGeneralLedgerService gl) => _gl = gl;
+
+    [HttpGet("{**path}")]
+    public Task<IActionResult> Get(string path, CancellationToken ct) => ForwardAsync(HttpMethod.Get, path, ct);
+
+    [HttpPost("{**path}")]
+    public Task<IActionResult> Post(string path, CancellationToken ct) => ForwardAsync(HttpMethod.Post, path, ct);
+
+    [HttpPut("{**path}")]
+    public Task<IActionResult> Put(string path, CancellationToken ct) => ForwardAsync(HttpMethod.Put, path, ct);
+
+    private async Task<IActionResult> ForwardAsync(HttpMethod method, string path, CancellationToken ct)
+    {
+        var body = method == HttpMethod.Get ? null : Request.Body;
+        var result = await _gl.ForwardAsync(method, path, Request.QueryString.Value, Request.ContentType, body, ct);
+        return new ContentResult
+        {
+            StatusCode = result.StatusCode,
+            Content = result.Body,
+            ContentType = result.ContentType ?? "application/json"
+        };
+    }
+}

Backend/ERPCore/Controllers/GrnConfigController.cs

@@ -0,0 +1,45 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Config;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// GRN configuration endpoints — warehouse selection and the default receiving warehouse.
+/// <para>
+/// <b>Authorization:</b> gated on the Receiving nav policy (the New GRN form has to read it), same
+/// Phase-1 posture as <see cref="SalesConfigController"/>.
+/// </para>
+/// </summary>
+[Route("api/v1/grn-config")]
+[Authorize(Policy = NavPolicies.Prefix + "receiving")]
+public sealed class GrnConfigController : ApiControllerBase
+{
+    private readonly IGrnConfigService _config;
+
+    public GrnConfigController(IGrnConfigService config) => _config = config;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(GrnConfigDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<GrnConfigDto>> Get(CancellationToken ct)
+    {
+        var result = await _config.GetAsync(ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPut]
+    [ProducesResponseType(typeof(GrnConfigDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<GrnConfigDto>> Update(
+        [FromBody] UpdateGrnConfigRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _config.UpdateAsync(request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+}

Backend/ERPCore/Controllers/GrnsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Grn;
@@ -8,19 +10,23 @@ namespace ERPCore.Controllers;
 
 /// <summary>Goods-receipt endpoints (docs/11 §4).</summary>
 [Route("api/v1/grns")]
+[Authorize(Policy = NavPolicies.Prefix + "receiving")]
 public sealed class GrnsController : ApiControllerBase
 {
     private readonly IGrnService _grns;
 
-    public GrnsController(IGrnService grns) => _grns = grns;
+    public GrnsController(IGrnService grns)
+    {
+        _grns = grns;
+    }
 
     /// <summary>List GRNs, newest first.</summary>
     [HttpGet]
     [ProducesResponseType(typeof(PagedResponse<GrnSummaryDto>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedResponse<GrnSummaryDto>>> List(
         [FromQuery] PageQuery query, [FromQuery] GrnStatus? status, [FromQuery] int? poId,
-        [FromQuery] int? vendorId, [FromQuery] int? warehouseId, CancellationToken ct)
-        => Ok(await _grns.ListAsync(query, status, poId, vendorId, warehouseId, ct));
+        [FromQuery] int? vendorId, [FromQuery] int? warehouseId, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _grns.ListAsync(query, status, poId, vendorId, warehouseId, branchId, ct));
 
     [HttpGet("{grnId:int}")]
     [ProducesResponseType(typeof(GrnDto), StatusCodes.Status200OK)]

Backend/ERPCore/Controllers/Hrm/AttendanceBatchesController.cs

@@ -0,0 +1,99 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Attendance upload batch endpoints (docs/13-BACKEND-HRM-API.md §4).</summary>
+[Route("api/v1/attendance-batches")]
+public sealed class AttendanceBatchesController : ApiControllerBase
+{
+    private readonly IAttendanceUploadService _attendance;
+    private readonly ICurrentUser _currentUser;
+
+    public AttendanceBatchesController(IAttendanceUploadService attendance, ICurrentUser currentUser)
+    {
+        _attendance = attendance;
+        _currentUser = currentUser;
+    }
+
+    [HttpGet("template.xlsx")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public IActionResult DownloadTemplate([FromQuery] string? format)
+    {
+        var (content, contentType, fileName) = _attendance.GenerateTemplate(string.Equals(format, "csv", StringComparison.OrdinalIgnoreCase));
+        return File(content, contentType, fileName);
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<AttendanceUploadBatchDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<AttendanceUploadBatchDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] AttendanceBatchStatus? status,
+        [FromQuery] int? periodYear, [FromQuery] int? periodMonth, CancellationToken ct)
+        => Ok(await _attendance.ListBatchesAsync(query, status, periodYear, periodMonth, ct));
+
+    [HttpGet("{batchId:int}")]
+    [ProducesResponseType(typeof(AttendanceUploadBatchDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<AttendanceUploadBatchDto>> GetById(int batchId, CancellationToken ct)
+    {
+        var result = await _attendance.GetBatchAsync(batchId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    [HttpPost]
+    [RequestSizeLimit(20 * 1024 * 1024)]
+    [ProducesResponseType(typeof(AttendanceUploadBatchDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<AttendanceUploadBatchDto>> Upload(
+        [FromForm] UploadAttendanceBatchMetadata metadata, IFormFile file, CancellationToken ct)
+    {
+        await using var stream = file.OpenReadStream();
+        var result = await _attendance.UploadAsync(stream, file.FileName, metadata.PeriodStart, metadata.PeriodEnd, _currentUser.AuditUserId, ct);
+        return Created($"/api/v1/attendance-batches/{result.AttendanceUploadBatchId}", result);
+    }
+
+    [HttpGet("{batchId:int}/records")]
+    [ProducesResponseType(typeof(List<AttendanceRecordDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<AttendanceRecordDto>>> ListRecords(
+        int batchId, [FromQuery] RowValidationStatus? status, CancellationToken ct)
+        => Ok(await _attendance.ListRecordsAsync(batchId, status, ct));
+
+    [HttpPut("{batchId:int}/records/{recordId:int}")]
+    [ProducesResponseType(typeof(AttendanceRecordDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<AttendanceRecordDto>> UpdateRecord(
+        int batchId, int recordId, [FromBody] UpdateAttendanceRecordRequest request, CancellationToken ct)
+        => Ok(await _attendance.UpdateRecordAsync(batchId, recordId, request, _currentUser.AuditUserId, ct));
+
+    [HttpPost("{batchId:int}/resolve-duplicate")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> ResolveDuplicate(int batchId, [FromBody] ResolveDuplicateRequest request, CancellationToken ct)
+    {
+        await _attendance.ResolveDuplicateAsync(batchId, request, ct);
+        return NoContent();
+    }
+
+    [HttpPost("{batchId:int}/validate")]
+    [ProducesResponseType(typeof(AttendanceUploadBatchDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<AttendanceUploadBatchDto>> Validate(int batchId, CancellationToken ct)
+        => Ok(await _attendance.ValidateAsync(batchId, ct));
+
+    [HttpPost("{batchId:int}/confirm")]
+    [ProducesResponseType(typeof(AttendanceUploadBatchDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<AttendanceUploadBatchDto>> Confirm(int batchId, CancellationToken ct)
+        => Ok(await _attendance.ConfirmAsync(batchId, _currentUser.AuditUserId, ct));
+
+    [HttpPost("{batchId:int}/unlock")]
+    [ProducesResponseType(typeof(AttendanceUploadBatchDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<AttendanceUploadBatchDto>> Unlock(int batchId, [FromBody] UnlockAttendanceBatchRequest request, CancellationToken ct)
+        => Ok(await _attendance.UnlockAsync(batchId, request.Reason, _currentUser.AuditUserId, ct));
+}

Backend/ERPCore/Controllers/Hrm/BranchesController.cs

@@ -0,0 +1,74 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Branch master endpoints (docs/13-BACKEND-HRM-API.md §2).</summary>
+[Route("api/v1/branches")]
+public sealed class BranchesController : ApiControllerBase
+{
+    private readonly IBranchService _branches;
+
+    public BranchesController(IBranchService branches) => _branches = branches;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<BranchDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<BranchDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _branches.ListAsync(query, status, ct));
+
+    [HttpGet("{branchId:int}")]
+    [ProducesResponseType(typeof(BranchDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<BranchDto>> GetById(int branchId, CancellationToken ct)
+    {
+        var result = await _branches.GetAsync(branchId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(BranchDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<BranchDto>> Create([FromBody] CreateBranchRequest request, CancellationToken ct)
+    {
+        var result = await _branches.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/branches/{result.Value.BranchId}", result.Value);
+    }
+
+    [HttpPut("{branchId:int}")]
+    [ProducesResponseType(typeof(BranchDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<BranchDto>> Update(int branchId, [FromBody] UpdateBranchRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _branches.UpdateAsync(branchId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{branchId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int branchId, [FromBody] UpdateHrMasterStatusRequest request, CancellationToken ct)
+    {
+        await _branches.SetStatusAsync(branchId, request.Status, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{branchId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int branchId, CancellationToken ct)
+    {
+        await _branches.DeleteAsync(branchId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/Hrm/DepartmentsController.cs

@@ -0,0 +1,75 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Department master endpoints (docs/13-BACKEND-HRM-API.md §2).</summary>
+[Route("api/v1/departments")]
+public sealed class DepartmentsController : ApiControllerBase
+{
+    private readonly IDepartmentService _departments;
+
+    public DepartmentsController(IDepartmentService departments) => _departments = departments;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<DepartmentDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<DepartmentDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _departments.ListAsync(query, status, ct));
+
+    [HttpGet("{departmentId:int}")]
+    [ProducesResponseType(typeof(DepartmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<DepartmentDto>> GetById(int departmentId, CancellationToken ct)
+    {
+        var result = await _departments.GetAsync(departmentId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(DepartmentDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<DepartmentDto>> Create([FromBody] CreateDepartmentRequest request, CancellationToken ct)
+    {
+        var result = await _departments.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/departments/{result.Value.DepartmentId}", result.Value);
+    }
+
+    [HttpPut("{departmentId:int}")]
+    [ProducesResponseType(typeof(DepartmentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<DepartmentDto>> Update(int departmentId, [FromBody] UpdateDepartmentRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _departments.UpdateAsync(departmentId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{departmentId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int departmentId, [FromBody] UpdateHrMasterStatusRequest request, CancellationToken ct)
+    {
+        await _departments.SetStatusAsync(departmentId, request.Status, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{departmentId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int departmentId, CancellationToken ct)
+    {
+        await _departments.DeleteAsync(departmentId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/Hrm/DesignationsController.cs

@@ -0,0 +1,74 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Designation (job title) master endpoints (docs/13-BACKEND-HRM-API.md §2).</summary>
+[Route("api/v1/designations")]
+public sealed class DesignationsController : ApiControllerBase
+{
+    private readonly IDesignationService _designations;
+
+    public DesignationsController(IDesignationService designations) => _designations = designations;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<DesignationDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<DesignationDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _designations.ListAsync(query, status, ct));
+
+    [HttpGet("{designationId:int}")]
+    [ProducesResponseType(typeof(DesignationDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<DesignationDto>> GetById(int designationId, CancellationToken ct)
+    {
+        var result = await _designations.GetAsync(designationId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(DesignationDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<DesignationDto>> Create([FromBody] CreateDesignationRequest request, CancellationToken ct)
+    {
+        var result = await _designations.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/designations/{result.Value.DesignationId}", result.Value);
+    }
+
+    [HttpPut("{designationId:int}")]
+    [ProducesResponseType(typeof(DesignationDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<DesignationDto>> Update(int designationId, [FromBody] UpdateDesignationRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _designations.UpdateAsync(designationId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{designationId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int designationId, [FromBody] UpdateHrMasterStatusRequest request, CancellationToken ct)
+    {
+        await _designations.SetStatusAsync(designationId, request.Status, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{designationId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int designationId, CancellationToken ct)
+    {
+        await _designations.DeleteAsync(designationId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/Hrm/EmployeesController.cs

@@ -0,0 +1,227 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>
+/// Employee (staff) endpoints, incl. the Employee&lt;-&gt;User cross-link and staff
+/// document sub-resources (docs/13-BACKEND-HRM-API.md §3).
+/// </summary>
+[Route("api/v1/employees")]
+public sealed class EmployeesController : ApiControllerBase
+{
+    private readonly IEmployeeService _employees;
+    private readonly IEmployeeUserLinkService _links;
+    private readonly IEmployeeDocumentService _documents;
+    private readonly ILeaveBalanceService _leaveBalances;
+    private readonly IEmployeeSalaryStructureService _salaryStructures;
+    private readonly IEmployeeLoanService _loans;
+    private readonly ICurrentUser _currentUser;
+
+    public EmployeesController(
+        IEmployeeService employees, IEmployeeUserLinkService links, IEmployeeDocumentService documents,
+        ILeaveBalanceService leaveBalances, IEmployeeSalaryStructureService salaryStructures,
+        IEmployeeLoanService loans, ICurrentUser currentUser)
+    {
+        _employees = employees;
+        _links = links;
+        _documents = documents;
+        _leaveBalances = leaveBalances;
+        _salaryStructures = salaryStructures;
+        _loans = loans;
+        _currentUser = currentUser;
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<EmployeeListItemDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<EmployeeListItemDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EmployeeStatus? status,
+        [FromQuery] int? departmentId, [FromQuery] int? designationId, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _employees.ListAsync(query, status, departmentId, designationId, branchId, ct));
+
+    /// <summary>Advisory reverse-direction lookup: does a System User already exist with this email? (docs/12-BACKEND-HRM.md A.5)</summary>
+    [HttpGet("email-lookup")]
+    [ProducesResponseType(typeof(UserMatchResponse), StatusCodes.Status200OK)]
+    public async Task<ActionResult<UserMatchResponse>> EmailLookup([FromQuery] string email, CancellationToken ct)
+        => Ok(new UserMatchResponse(await _links.FindUserCandidateByEmailAsync(email, ct)));
+
+    [HttpGet("{employeeId:int}")]
+    [ProducesResponseType(typeof(EmployeeDetailDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<EmployeeDetailDto>> GetById(int employeeId, CancellationToken ct)
+    {
+        var result = await _employees.GetAsync(employeeId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(EmployeeDetailDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<EmployeeDetailDto>> Create([FromBody] CreateEmployeeRequest request, CancellationToken ct)
+    {
+        var result = await _employees.CreateAsync(request, _currentUser.AuditUserId, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/employees/{result.Value.EmployeeId}", result.Value);
+    }
+
+    [HttpPut("{employeeId:int}")]
+    [ProducesResponseType(typeof(EmployeeDetailDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<EmployeeDetailDto>> Update(int employeeId, [FromBody] UpdateEmployeeRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _employees.UpdateAsync(employeeId, request, expected, _currentUser.AuditUserId, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{employeeId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int employeeId, [FromBody] UpdateEmployeeStatusRequest request, CancellationToken ct)
+    {
+        await _employees.SetStatusAsync(employeeId, request.Status, ct);
+        return NoContent();
+    }
+
+    /// <summary>Permanently deletes the employee and all dependent HR records. Blocked (409) if payroll history exists.</summary>
+    [HttpDelete("{employeeId:int}")]
+    [ProducesResponseType(typeof(EmployeeDeleteResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<EmployeeDeleteResultDto>> Delete(int employeeId, [FromQuery] bool deleteUserAccount, CancellationToken ct)
+    {
+        var result = await _employees.DeleteAsync(employeeId, deleteUserAccount, ct);
+        return Ok(result);
+    }
+
+    [HttpPost("{employeeId:int}/link-user")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> LinkUser(int employeeId, [FromBody] LinkUserRequest request, CancellationToken ct)
+    {
+        await _links.LinkAsync(employeeId, request.UserId, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{employeeId:int}/link-user")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> UnlinkUser(int employeeId, CancellationToken ct)
+    {
+        await _links.UnlinkAsync(employeeId, ct);
+        return NoContent();
+    }
+
+    [HttpGet("{employeeId:int}/bank-details")]
+    [ProducesResponseType(typeof(List<EmployeeBankDetailDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<EmployeeBankDetailDto>>> ListBankDetails(int employeeId, CancellationToken ct)
+        => Ok(await _employees.ListBankDetailsAsync(employeeId, ct));
+
+    [HttpPut("{employeeId:int}/bank-details")]
+    [ProducesResponseType(typeof(List<EmployeeBankDetailDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<List<EmployeeBankDetailDto>>> ReplaceBankDetails(
+        int employeeId, [FromBody] ReplaceEmployeeBankDetailsRequest request, CancellationToken ct)
+        => Ok(await _employees.ReplaceBankDetailsAsync(employeeId, request, ct));
+
+    [HttpGet("{employeeId:int}/leave-balances")]
+    [ProducesResponseType(typeof(List<LeaveBalanceDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<LeaveBalanceDto>>> ListLeaveBalances(int employeeId, [FromQuery] int? year, CancellationToken ct)
+        => Ok(await _leaveBalances.ListAsync(employeeId, year, ct));
+
+    [HttpPut("{employeeId:int}/leave-balances")]
+    [ProducesResponseType(typeof(List<LeaveBalanceDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<List<LeaveBalanceDto>>> UpdateLeaveBalances(
+        int employeeId, [FromBody] UpdateLeaveBalancesRequest request, CancellationToken ct)
+        => Ok(await _leaveBalances.ApplyAdjustmentsAsync(employeeId, request, ct));
+
+    [HttpGet("{employeeId:int}/salary-structure")]
+    [ProducesResponseType(typeof(List<EmployeeSalaryStructureDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<EmployeeSalaryStructureDto>>> GetSalaryStructureHistory(int employeeId, CancellationToken ct)
+        => Ok(await _salaryStructures.ListHistoryAsync(employeeId, ct));
+
+    [HttpPost("{employeeId:int}/salary-structure")]
+    [ProducesResponseType(typeof(EmployeeSalaryStructureDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<EmployeeSalaryStructureDto>> CreateSalaryStructure(
+        int employeeId, [FromBody] CreateSalaryStructureRequest request, CancellationToken ct)
+    {
+        var result = await _salaryStructures.CreateAsync(employeeId, request, _currentUser.AuditUserId, ct);
+        return Created($"/api/v1/employees/{employeeId}/salary-structure", result);
+    }
+
+    [HttpGet("{employeeId:int}/loans")]
+    [ProducesResponseType(typeof(List<EmployeeLoanDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<EmployeeLoanDto>>> ListLoans(int employeeId, CancellationToken ct)
+        => Ok(await _loans.ListAsync(employeeId, ct));
+
+    [HttpGet("{employeeId:int}/loans/{loanId:int}")]
+    [ProducesResponseType(typeof(EmployeeLoanDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<EmployeeLoanDto>> GetLoan(int employeeId, int loanId, CancellationToken ct)
+    {
+        var result = await _loans.GetAsync(employeeId, loanId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    [HttpPost("{employeeId:int}/loans")]
+    [ProducesResponseType(typeof(EmployeeLoanDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<EmployeeLoanDto>> CreateLoan(int employeeId, [FromBody] CreateEmployeeLoanRequest request, CancellationToken ct)
+    {
+        var result = await _loans.CreateAsync(employeeId, request, _currentUser.AuditUserId, ct);
+        return Created($"/api/v1/employees/{employeeId}/loans/{result.EmployeeLoanId}", result);
+    }
+
+    [HttpGet("{employeeId:int}/documents")]
+    [ProducesResponseType(typeof(List<EmployeeDocumentDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<EmployeeDocumentDto>>> ListDocuments(int employeeId, CancellationToken ct)
+        => Ok(await _documents.ListAsync(employeeId, ct));
+
+    [HttpPost("{employeeId:int}/documents")]
+    [RequestSizeLimit(20 * 1024 * 1024)]
+    [ProducesResponseType(typeof(EmployeeDocumentDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status413PayloadTooLarge)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<EmployeeDocumentDto>> UploadDocument(
+        int employeeId, [FromForm] UploadEmployeeDocumentRequest request, IFormFile file, CancellationToken ct)
+    {
+        await using var stream = file.OpenReadStream();
+        var result = await _documents.UploadAsync(
+            employeeId, request, stream, file.FileName, file.ContentType, _currentUser.AuditUserId, ct);
+        return Created($"/api/v1/employees/{employeeId}/documents/{result.EmployeeDocumentId}", result);
+    }
+
+    [HttpGet("{employeeId:int}/documents/{documentId:int}/download")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> DownloadDocument(int employeeId, int documentId, CancellationToken ct)
+    {
+        var (content, fileName, contentType) = await _documents.DownloadAsync(employeeId, documentId, ct);
+        return File(content, contentType, fileName);
+    }
+
+    [HttpPatch("{employeeId:int}/documents/{documentId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetDocumentStatus(
+        int employeeId, int documentId, [FromBody] UpdateEmployeeDocumentStatusRequest request, CancellationToken ct)
+    {
+        await _documents.SetStatusAsync(employeeId, documentId, request.Status, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/Hrm/EmploymentTypesController.cs

@@ -0,0 +1,74 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>EmploymentType master endpoints (docs/13-BACKEND-HRM-API.md §2).</summary>
+[Route("api/v1/employment-types")]
+public sealed class EmploymentTypesController : ApiControllerBase
+{
+    private readonly IEmploymentTypeService _employmentTypes;
+
+    public EmploymentTypesController(IEmploymentTypeService employmentTypes) => _employmentTypes = employmentTypes;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<EmploymentTypeDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<EmploymentTypeDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _employmentTypes.ListAsync(query, status, ct));
+
+    [HttpGet("{employmentTypeId:int}")]
+    [ProducesResponseType(typeof(EmploymentTypeDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<EmploymentTypeDto>> GetById(int employmentTypeId, CancellationToken ct)
+    {
+        var result = await _employmentTypes.GetAsync(employmentTypeId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(EmploymentTypeDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<EmploymentTypeDto>> Create([FromBody] CreateEmploymentTypeRequest request, CancellationToken ct)
+    {
+        var result = await _employmentTypes.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/employment-types/{result.Value.EmploymentTypeId}", result.Value);
+    }
+
+    [HttpPut("{employmentTypeId:int}")]
+    [ProducesResponseType(typeof(EmploymentTypeDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<EmploymentTypeDto>> Update(int employmentTypeId, [FromBody] UpdateEmploymentTypeRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _employmentTypes.UpdateAsync(employmentTypeId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{employmentTypeId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int employmentTypeId, [FromBody] UpdateHrMasterStatusRequest request, CancellationToken ct)
+    {
+        await _employmentTypes.SetStatusAsync(employmentTypeId, request.Status, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{employmentTypeId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int employmentTypeId, CancellationToken ct)
+    {
+        await _employmentTypes.DeleteAsync(employmentTypeId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/Hrm/HrDocumentTypesController.cs

@@ -0,0 +1,74 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Staff document-type catalog ("DocType") endpoints (docs/13-BACKEND-HRM-API.md §2).</summary>
+[Route("api/v1/hr-document-types")]
+public sealed class HrDocumentTypesController : ApiControllerBase
+{
+    private readonly IHrDocumentTypeService _types;
+
+    public HrDocumentTypesController(IHrDocumentTypeService types) => _types = types;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<HrDocumentTypeDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<HrDocumentTypeDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _types.ListAsync(query, status, ct));
+
+    [HttpGet("{hrDocumentTypeId:int}")]
+    [ProducesResponseType(typeof(HrDocumentTypeDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<HrDocumentTypeDto>> GetById(int hrDocumentTypeId, CancellationToken ct)
+    {
+        var result = await _types.GetAsync(hrDocumentTypeId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(HrDocumentTypeDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<HrDocumentTypeDto>> Create([FromBody] CreateHrDocumentTypeRequest request, CancellationToken ct)
+    {
+        var result = await _types.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/hr-document-types/{result.Value.HrDocumentTypeId}", result.Value);
+    }
+
+    [HttpPut("{hrDocumentTypeId:int}")]
+    [ProducesResponseType(typeof(HrDocumentTypeDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<HrDocumentTypeDto>> Update(int hrDocumentTypeId, [FromBody] UpdateHrDocumentTypeRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _types.UpdateAsync(hrDocumentTypeId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{hrDocumentTypeId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int hrDocumentTypeId, [FromBody] UpdateHrMasterStatusRequest request, CancellationToken ct)
+    {
+        await _types.SetStatusAsync(hrDocumentTypeId, request.Status, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{hrDocumentTypeId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int hrDocumentTypeId, CancellationToken ct)
+    {
+        await _types.DeleteAsync(hrDocumentTypeId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/Hrm/HrReportsController.cs

@@ -0,0 +1,52 @@
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Read-only HRM reports (FR-HR-RPT, docs/13-BACKEND-HRM-API.md §6). No new entities — aggregation over existing tables.</summary>
+[Route("api/v1/reports/hrm")]
+public sealed class HrReportsController : ApiControllerBase
+{
+    private readonly IHrReportService _reports;
+
+    public HrReportsController(IHrReportService reports) => _reports = reports;
+
+    [HttpGet("attendance-summary")]
+    [ProducesResponseType(typeof(List<AttendanceSummaryRowDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<AttendanceSummaryRowDto>>> AttendanceSummary(
+        [FromQuery] int periodYear, [FromQuery] int periodMonth, [FromQuery] int? departmentId, CancellationToken ct)
+        => Ok(await _reports.AttendanceSummaryAsync(periodYear, periodMonth, departmentId, ct));
+
+    [HttpGet("overtime")]
+    [ProducesResponseType(typeof(List<OvertimeReportRowDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<OvertimeReportRowDto>>> Overtime(
+        [FromQuery] int periodYear, [FromQuery] int periodMonth, CancellationToken ct)
+        => Ok(await _reports.OvertimeReportAsync(periodYear, periodMonth, ct));
+
+    [HttpGet("late-arrivals")]
+    [ProducesResponseType(typeof(List<LateArrivalReportRowDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<LateArrivalReportRowDto>>> LateArrivals(
+        [FromQuery] int periodYear, [FromQuery] int periodMonth, CancellationToken ct)
+        => Ok(await _reports.LateArrivalReportAsync(periodYear, periodMonth, ct));
+
+    [HttpGet("payroll-register")]
+    [ProducesResponseType(typeof(List<PayrollRegisterRowDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<PayrollRegisterRowDto>>> PayrollRegister([FromQuery] int payrollRunId, CancellationToken ct)
+        => Ok(await _reports.PayrollRegisterAsync(payrollRunId, ct));
+
+    [HttpGet("salary-history")]
+    [ProducesResponseType(typeof(List<SalaryHistoryRowDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<SalaryHistoryRowDto>>> SalaryHistory([FromQuery] int employeeId, CancellationToken ct)
+        => Ok(await _reports.SalaryHistoryAsync(employeeId, ct));
+
+    [HttpGet("leave-balances")]
+    [ProducesResponseType(typeof(List<LeaveBalanceReportRowDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<LeaveBalanceReportRowDto>>> LeaveBalances([FromQuery] int year, CancellationToken ct)
+        => Ok(await _reports.LeaveBalanceReportAsync(year, ct));
+
+    [HttpGet("document-expiry")]
+    [ProducesResponseType(typeof(List<DocumentExpiryReportRowDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<DocumentExpiryReportRowDto>>> DocumentExpiry([FromQuery] int withinDays, CancellationToken ct)
+        => Ok(await _reports.DocumentExpiryReportAsync(withinDays, ct));
+}

Backend/ERPCore/Controllers/Hrm/LeaveRequestsController.cs

@@ -0,0 +1,71 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Leave request endpoints (docs/13-BACKEND-HRM-API.md §5).</summary>
+[Route("api/v1/leave-requests")]
+public sealed class LeaveRequestsController : ApiControllerBase
+{
+    private readonly ILeaveRequestService _requests;
+    private readonly ICurrentUser _currentUser;
+
+    public LeaveRequestsController(ILeaveRequestService requests, ICurrentUser currentUser)
+    {
+        _requests = requests;
+        _currentUser = currentUser;
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<LeaveRequestDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<LeaveRequestDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] int? employeeId, [FromQuery] LeaveRequestStatus? status, CancellationToken ct)
+        => Ok(await _requests.ListAsync(query, employeeId, status, ct));
+
+    [HttpGet("{leaveRequestId:int}")]
+    [ProducesResponseType(typeof(LeaveRequestDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<LeaveRequestDto>> GetById(int leaveRequestId, CancellationToken ct)
+    {
+        var result = await _requests.GetAsync(leaveRequestId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(LeaveRequestDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<LeaveRequestDto>> Create([FromBody] CreateLeaveRequestRequest request, CancellationToken ct)
+    {
+        var result = await _requests.CreateAsync(request, _currentUser.AuditUserId, ct);
+        return Created($"/api/v1/leave-requests/{result.LeaveRequestId}", result);
+    }
+
+    [HttpPost("{leaveRequestId:int}/submit")]
+    [ProducesResponseType(typeof(LeaveRequestDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<LeaveRequestDto>> Submit(int leaveRequestId, CancellationToken ct)
+        => Ok(await _requests.SubmitAsync(leaveRequestId, ct));
+
+    [HttpPost("{leaveRequestId:int}/approve")]
+    [ProducesResponseType(typeof(LeaveRequestDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<LeaveRequestDto>> Approve(int leaveRequestId, CancellationToken ct)
+        => Ok(await _requests.ApproveAsync(leaveRequestId, _currentUser.AuditUserId, ct));
+
+    [HttpPost("{leaveRequestId:int}/reject")]
+    [ProducesResponseType(typeof(LeaveRequestDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<LeaveRequestDto>> Reject(int leaveRequestId, [FromBody] RejectLeaveRequestRequest request, CancellationToken ct)
+        => Ok(await _requests.RejectAsync(leaveRequestId, request.Reason, _currentUser.AuditUserId, ct));
+
+    [HttpPost("{leaveRequestId:int}/cancel")]
+    [ProducesResponseType(typeof(LeaveRequestDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<LeaveRequestDto>> Cancel(int leaveRequestId, CancellationToken ct)
+        => Ok(await _requests.CancelAsync(leaveRequestId, ct));
+}

Backend/ERPCore/Controllers/Hrm/LeaveTypesController.cs

@@ -0,0 +1,74 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Leave type master endpoints (docs/13-BACKEND-HRM-API.md §5).</summary>
+[Route("api/v1/leave-types")]
+public sealed class LeaveTypesController : ApiControllerBase
+{
+    private readonly ILeaveTypeService _leaveTypes;
+
+    public LeaveTypesController(ILeaveTypeService leaveTypes) => _leaveTypes = leaveTypes;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<LeaveTypeDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<LeaveTypeDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _leaveTypes.ListAsync(query, status, ct));
+
+    [HttpGet("{leaveTypeId:int}")]
+    [ProducesResponseType(typeof(LeaveTypeDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<LeaveTypeDto>> GetById(int leaveTypeId, CancellationToken ct)
+    {
+        var result = await _leaveTypes.GetAsync(leaveTypeId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(LeaveTypeDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<LeaveTypeDto>> Create([FromBody] CreateLeaveTypeRequest request, CancellationToken ct)
+    {
+        var result = await _leaveTypes.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/leave-types/{result.Value.LeaveTypeId}", result.Value);
+    }
+
+    [HttpPut("{leaveTypeId:int}")]
+    [ProducesResponseType(typeof(LeaveTypeDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<LeaveTypeDto>> Update(int leaveTypeId, [FromBody] UpdateLeaveTypeRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _leaveTypes.UpdateAsync(leaveTypeId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{leaveTypeId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int leaveTypeId, [FromBody] UpdateHrMasterStatusRequest request, CancellationToken ct)
+    {
+        await _leaveTypes.SetStatusAsync(leaveTypeId, request.Status, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{leaveTypeId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int leaveTypeId, CancellationToken ct)
+    {
+        await _leaveTypes.DeleteAsync(leaveTypeId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/Hrm/PayrollRunsController.cs

@@ -0,0 +1,85 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Payroll run endpoints (docs/13-BACKEND-HRM-API.md §6).</summary>
+[Route("api/v1/payroll-runs")]
+public sealed class PayrollRunsController : ApiControllerBase
+{
+    private readonly IPayrollRunService _payrollRuns;
+    private readonly ICurrentUser _currentUser;
+
+    public PayrollRunsController(IPayrollRunService payrollRuns, ICurrentUser currentUser)
+    {
+        _payrollRuns = payrollRuns;
+        _currentUser = currentUser;
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<PayrollRunDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<PayrollRunDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] int? periodYear, [FromQuery] int? periodMonth,
+        [FromQuery] PayrollRunStatus? status, CancellationToken ct)
+        => Ok(await _payrollRuns.ListAsync(query, periodYear, periodMonth, status, ct));
+
+    [HttpGet("{payrollRunId:int}")]
+    [ProducesResponseType(typeof(PayrollRunDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<PayrollRunDto>> GetById(int payrollRunId, CancellationToken ct)
+    {
+        var result = await _payrollRuns.GetAsync(payrollRunId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    [HttpGet("{payrollRunId:int}/lines")]
+    [ProducesResponseType(typeof(List<PayrollLineDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<PayrollLineDto>>> ListLines(int payrollRunId, CancellationToken ct)
+        => Ok(await _payrollRuns.ListLinesAsync(payrollRunId, ct));
+
+    [HttpGet("{payrollRunId:int}/lines/{lineId:int}")]
+    [ProducesResponseType(typeof(PayrollLineDetailDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<PayrollLineDetailDto>> GetLine(int payrollRunId, int lineId, CancellationToken ct)
+    {
+        var result = await _payrollRuns.GetLineAsync(payrollRunId, lineId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(PayrollRunDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<PayrollRunDto>> Generate([FromBody] GeneratePayrollRunRequest request, CancellationToken ct)
+    {
+        var result = await _payrollRuns.GenerateAsync(request, _currentUser.AuditUserId, ct);
+        return Created($"/api/v1/payroll-runs/{result.PayrollRunId}", result);
+    }
+
+    [HttpPost("{payrollRunId:int}/approve")]
+    [ProducesResponseType(typeof(PayrollRunDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PayrollRunDto>> Approve(int payrollRunId, CancellationToken ct)
+        => Ok(await _payrollRuns.ApproveAsync(payrollRunId, _currentUser.AuditUserId, ct));
+
+    [HttpPost("{payrollRunId:int}/lock")]
+    [ProducesResponseType(typeof(PayrollRunDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PayrollRunDto>> Lock(int payrollRunId, CancellationToken ct)
+        => Ok(await _payrollRuns.LockAsync(payrollRunId, _currentUser.AuditUserId, ct));
+
+    [HttpPost("{payrollRunId:int}/unlock")]
+    [ProducesResponseType(typeof(PayrollRunDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PayrollRunDto>> Unlock(int payrollRunId, [FromBody] UnlockPayrollRunRequest request, CancellationToken ct)
+        => Ok(await _payrollRuns.UnlockAsync(payrollRunId, request.Reason, _currentUser.AuditUserId, ct));
+
+    [HttpPost("{payrollRunId:int}/generate-payslips")]
+    [ProducesResponseType(typeof(List<PayslipDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<List<PayslipDto>>> GeneratePayslips(int payrollRunId, CancellationToken ct)
+        => Ok(await _payrollRuns.GeneratePayslipsAsync(payrollRunId, ct));
+}

Backend/ERPCore/Controllers/Hrm/PayrollStatutorySettingsController.cs

@@ -0,0 +1,33 @@
+using ERPCore.Dtos.Hrm;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Effective-dated EPF/ETF settings (docs/13-BACKEND-HRM-API.md §6).</summary>
+[Route("api/v1/payroll-statutory-settings")]
+public sealed class PayrollStatutorySettingsController : ApiControllerBase
+{
+    private readonly IPayrollStatutorySettingService _settings;
+    private readonly ICurrentUser _currentUser;
+
+    public PayrollStatutorySettingsController(IPayrollStatutorySettingService settings, ICurrentUser currentUser)
+    {
+        _settings = settings;
+        _currentUser = currentUser;
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(List<PayrollStatutorySettingDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<PayrollStatutorySettingDto>>> List(CancellationToken ct)
+        => Ok(await _settings.ListAsync(ct));
+
+    [HttpPost]
+    [ProducesResponseType(typeof(PayrollStatutorySettingDto), StatusCodes.Status201Created)]
+    public async Task<ActionResult<PayrollStatutorySettingDto>> Create([FromBody] UpsertPayrollStatutorySettingRequest request, CancellationToken ct)
+    {
+        var result = await _settings.CreateAsync(request, _currentUser.AuditUserId, ct);
+        return Created($"/api/v1/payroll-statutory-settings/{result.PayrollStatutorySettingId}", result);
+    }
+}

Backend/ERPCore/Controllers/Hrm/PayslipsController.cs

@@ -0,0 +1,32 @@
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Payslip retrieval + HTML print view (docs/13-BACKEND-HRM-API.md §6).</summary>
+[Route("api/v1/payslips")]
+public sealed class PayslipsController : ApiControllerBase
+{
+    private readonly IPayslipService _payslips;
+
+    public PayslipsController(IPayslipService payslips) => _payslips = payslips;
+
+    [HttpGet("{payslipId:int}")]
+    [ProducesResponseType(typeof(PayslipDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<PayslipDto>> GetById(int payslipId, CancellationToken ct)
+    {
+        var result = await _payslips.GetAsync(payslipId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
+    [HttpGet("{payslipId:int}/view")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> View(int payslipId, CancellationToken ct)
+    {
+        var html = await _payslips.RenderHtmlAsync(payslipId, ct);
+        return html is null ? NotFound() : Content(html, "text/html");
+    }
+}

Backend/ERPCore/Controllers/Hrm/SalaryComponentsController.cs

@@ -0,0 +1,74 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>SalaryComponent master endpoints (docs/13-BACKEND-HRM-API.md §6).</summary>
+[Route("api/v1/salary-components")]
+public sealed class SalaryComponentsController : ApiControllerBase
+{
+    private readonly ISalaryComponentService _components;
+
+    public SalaryComponentsController(ISalaryComponentService components) => _components = components;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<SalaryComponentDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<SalaryComponentDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _components.ListAsync(query, status, ct));
+
+    [HttpGet("{salaryComponentId:int}")]
+    [ProducesResponseType(typeof(SalaryComponentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalaryComponentDto>> GetById(int salaryComponentId, CancellationToken ct)
+    {
+        var result = await _components.GetAsync(salaryComponentId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(SalaryComponentDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<SalaryComponentDto>> Create([FromBody] CreateSalaryComponentRequest request, CancellationToken ct)
+    {
+        var result = await _components.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/salary-components/{result.Value.SalaryComponentId}", result.Value);
+    }
+
+    [HttpPut("{salaryComponentId:int}")]
+    [ProducesResponseType(typeof(SalaryComponentDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<SalaryComponentDto>> Update(int salaryComponentId, [FromBody] UpdateSalaryComponentRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _components.UpdateAsync(salaryComponentId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{salaryComponentId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int salaryComponentId, [FromBody] UpdateHrMasterStatusRequest request, CancellationToken ct)
+    {
+        await _components.SetStatusAsync(salaryComponentId, request.Status, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{salaryComponentId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int salaryComponentId, CancellationToken ct)
+    {
+        await _components.DeleteAsync(salaryComponentId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/Hrm/TaxSlabsController.cs

@@ -0,0 +1,28 @@
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>Configurable APIT-style tax slabs (docs/13-BACKEND-HRM-API.md §6).</summary>
+[Route("api/v1/tax-slabs")]
+public sealed class TaxSlabsController : ApiControllerBase
+{
+    private readonly ITaxSlabService _taxSlabs;
+
+    public TaxSlabsController(ITaxSlabService taxSlabs) => _taxSlabs = taxSlabs;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(List<TaxSlabDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<TaxSlabDto>>> List(CancellationToken ct)
+        => Ok(await _taxSlabs.ListAsync(ct));
+
+    [HttpPost]
+    [ProducesResponseType(typeof(TaxSlabDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<TaxSlabDto>> Create([FromBody] CreateTaxSlabRequest request, CancellationToken ct)
+    {
+        var result = await _taxSlabs.CreateAsync(request, ct);
+        return Created($"/api/v1/tax-slabs/{result.TaxSlabId}", result);
+    }
+}

Backend/ERPCore/Controllers/Hrm/WorkShiftsController.cs

@@ -0,0 +1,74 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers.Hrm;
+
+/// <summary>WorkShift master endpoints (docs/13-BACKEND-HRM-API.md §2).</summary>
+[Route("api/v1/work-shifts")]
+public sealed class WorkShiftsController : ApiControllerBase
+{
+    private readonly IWorkShiftService _shifts;
+
+    public WorkShiftsController(IWorkShiftService shifts) => _shifts = shifts;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<WorkShiftDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<WorkShiftDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _shifts.ListAsync(query, status, ct));
+
+    [HttpGet("{workShiftId:int}")]
+    [ProducesResponseType(typeof(WorkShiftDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<WorkShiftDto>> GetById(int workShiftId, CancellationToken ct)
+    {
+        var result = await _shifts.GetAsync(workShiftId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(WorkShiftDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<WorkShiftDto>> Create([FromBody] CreateWorkShiftRequest request, CancellationToken ct)
+    {
+        var result = await _shifts.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/work-shifts/{result.Value.WorkShiftId}", result.Value);
+    }
+
+    [HttpPut("{workShiftId:int}")]
+    [ProducesResponseType(typeof(WorkShiftDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<WorkShiftDto>> Update(int workShiftId, [FromBody] UpdateWorkShiftRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _shifts.UpdateAsync(workShiftId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{workShiftId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int workShiftId, [FromBody] UpdateHrMasterStatusRequest request, CancellationToken ct)
+    {
+        await _shifts.SetStatusAsync(workShiftId, request.Status, ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{workShiftId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int workShiftId, CancellationToken ct)
+    {
+        await _shifts.DeleteAsync(workShiftId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/ItemImagesController.cs

@@ -0,0 +1,64 @@
+using ERPCore.Dtos.Items;
+using ERPCore.Infra.Auth;
+using ERPCore.Services;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Item photos. Same access as the item master itself.</summary>
+[Route("api/v1/items/{itemId:int}/images")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
+public sealed class ItemImagesController : ApiControllerBase
+{
+    private readonly IItemImageService _images;
+    private readonly ICurrentUser _currentUser;
+
+    public ItemImagesController(IItemImageService images, ICurrentUser currentUser)
+    {
+        _images = images;
+        _currentUser = currentUser;
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(List<ItemImageDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<List<ItemImageDto>>> List(int itemId, CancellationToken ct)
+        => Ok(await _images.ListAsync(itemId, ct));
+
+    /// <summary>Upload one image (multipart <c>file</c>). 422 CONFIG_DISABLED while item images are off.</summary>
+    [HttpPost]
+    [RequestSizeLimit(ItemImageService.MaxSizeBytes + 64 * 1024)]
+    [ProducesResponseType(typeof(ItemImageDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status413PayloadTooLarge)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<ItemImageDto>> Upload(int itemId, IFormFile file, CancellationToken ct)
+    {
+        await using var stream = file.OpenReadStream();
+        var result = await _images.UploadAsync(itemId, stream, file.FileName, file.ContentType, _currentUser.AuditUserId, ct);
+        return Created($"/api/v1/items/{itemId}/images/{result.ItemImageId}", result);
+    }
+
+    /// <summary>The image bytes, served inline so an &lt;img&gt; can point straight at it.</summary>
+    [HttpGet("{itemImageId:int}/content")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> Content(int itemId, int itemImageId, CancellationToken ct)
+    {
+        var (content, contentType) = await _images.OpenAsync(itemId, itemImageId, ct);
+        // Stored files are immutable (new upload ⇒ new id), so the browser may cache them.
+        Response.Headers.CacheControl = "private, max-age=86400";
+        return File(content, contentType);
+    }
+
+    [HttpDelete("{itemImageId:int}")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> Delete(int itemId, int itemImageId, CancellationToken ct)
+    {
+        await _images.DeleteAsync(itemId, itemImageId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/ItemTypesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.ItemTypes;
@@ -13,6 +15,7 @@ namespace ERPCore.Controllers;
 /// into the client-generated SKU (docs/10 Part C.9).
 /// </summary>
 [Route("api/v1/item-types")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
 public sealed class ItemTypesController : ApiControllerBase
 {
     private readonly IItemTypeService _itemTypes;

Backend/ERPCore/Controllers/ItemsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Items;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Item master endpoints (docs/11-BACKEND-PHASE1.md §2.1–2.2).</summary>
 [Route("api/v1/items")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
 public sealed class ItemsController : ApiControllerBase
 {
     private readonly IItemService _items;
@@ -27,6 +30,33 @@ public sealed class ItemsController : ApiControllerBase
         CancellationToken ct)
         => Ok(await _items.ListAsync(query, status, categoryId, subCategoryId, brandId, trackingMode, ct));
 
+    /// <summary>Items list enriched with stock value, low-stock, last-purchase and
+    /// trailing-30-day sales aggregates, for the Items overview table.</summary>
+    [HttpGet("overview")]
+    [ProducesResponseType(typeof(PagedResponse<ItemOverviewDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<ItemOverviewDto>>> Overview(
+        [FromQuery] PageQuery query,
+        [FromQuery] EntityStatus? status,
+        [FromQuery] int? categoryId,
+        [FromQuery] int? subCategoryId,
+        [FromQuery] int? brandId,
+        [FromQuery] TrackingMode? trackingMode,
+        [FromQuery] StockNature? stockNature,
+        [FromQuery] ItemStockFilter? stock,
+        CancellationToken ct)
+        => Ok(await _items.GetOverviewAsync(query, status, categoryId, subCategoryId, brandId, trackingMode, stockNature, stock, ct));
+
+    /// <summary>Barcode/RFID lookup — matches an item's barcode/SKU, or a batch/serial
+    /// barcode/no (optionally scoped to <paramref name="itemId"/> first).</summary>
+    [HttpGet("scan")]
+    [ProducesResponseType(typeof(ItemScanResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<ItemScanResultDto>> Scan([FromQuery] string code, [FromQuery] int? itemId, CancellationToken ct)
+    {
+        var result = await _items.ScanAsync(code, itemId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+
     /// <summary>Get a single item; returns an <c>ETag</c> for optimistic concurrency.</summary>
     [HttpGet("{itemId:int}")]
     [ProducesResponseType(typeof(ItemDetailDto), StatusCodes.Status200OK)]
@@ -81,11 +111,4 @@ public sealed class ItemsController : ApiControllerBase
     [ProducesResponseType(StatusCodes.Status404NotFound)]
     public async Task<ActionResult<ItemReorderSettingsDto>> UpdateReorder(int itemId, [FromBody] UpdateReorderRequest request, CancellationToken ct)
         => Ok(await _items.UpdateReorderAsync(itemId, request, ct));
-
-    /// <summary>Replace the item's UOM conversions (FR-MD-02).</summary>
-    [HttpPut("{itemId:int}/uom-conversions")]
-    [ProducesResponseType(typeof(ItemUomConversionsDto), StatusCodes.Status200OK)]
-    [ProducesResponseType(StatusCodes.Status404NotFound)]
-    public async Task<ActionResult<ItemUomConversionsDto>> UpdateUomConversions(int itemId, [FromBody] UpdateUomConversionsRequest request, CancellationToken ct)
-        => Ok(await _items.UpdateUomConversionsAsync(itemId, request, ct));
 }

Backend/ERPCore/Controllers/JournalEntriesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Audit;
 using ERPCore.Dtos.Common;
 using ERPCore.Services.Interfaces;
@@ -10,6 +12,7 @@ namespace ERPCore.Controllers;
 /// Data only — no posting in Phase 1.
 /// </summary>
 [Route("api/v1/journal-entries")]
+[Authorize(Policy = NavPolicies.Prefix + "ledgers")]
 public sealed class JournalEntriesController : ApiControllerBase
 {
     private readonly IAuditService _audit;

Backend/ERPCore/Controllers/NotificationConfigController.cs

@@ -0,0 +1,37 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Notifications;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/notification-config")]
+[Authorize(Policy = NavPolicies.Prefix + "settings")]
+public sealed class NotificationConfigController : ApiControllerBase
+{
+    private readonly INotificationConfigService _config;
+
+    public NotificationConfigController(INotificationConfigService config) => _config = config;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(NotificationConfigDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<NotificationConfigDto>> Get(CancellationToken ct)
+    {
+        var result = await _config.GetAsync(ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPut]
+    [ProducesResponseType(typeof(NotificationConfigDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<NotificationConfigDto>> Update([FromBody] UpdateNotificationConfigRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _config.UpdateAsync(request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+}

Backend/ERPCore/Controllers/NotificationsController.cs

@@ -0,0 +1,32 @@
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/notifications")]
+public sealed class NotificationsController : ApiControllerBase
+{
+    private readonly INotificationService _notifications;
+    private readonly ICurrentUser _currentUser;
+
+    public NotificationsController(INotificationService notifications, ICurrentUser currentUser)
+    {
+        _notifications = notifications;
+        _currentUser = currentUser;
+    }
+
+    [HttpGet]
+    public async Task<ActionResult> Get([FromQuery] int take = 20, CancellationToken ct = default)
+    {
+        var feed = await _notifications.GetFeedAsync(_currentUser.AuditUserId, take, ct);
+        return Ok(feed);
+    }
+
+    [HttpPost("mark-all-read")]
+    public async Task<ActionResult> MarkAllRead(CancellationToken ct)
+    {
+        await _notifications.MarkAllReadAsync(_currentUser.AuditUserId, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/ProductConfigController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Config;
 using ERPCore.Services.Interfaces;
 using Microsoft.AspNetCore.Mvc;
@@ -16,6 +18,7 @@ namespace ERPCore.Controllers;
 /// </para>
 /// </summary>
 [Route("api/v1/product-config")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
 public sealed class ProductConfigController : ApiControllerBase
 {
     private readonly IProductConfigService _config;
@@ -42,5 +45,4 @@ public sealed class ProductConfigController : ApiControllerBase
         var result = await _config.UpdateAsync(request, expected, ct);
         SetETag(result.RowVersion);
         return Ok(result.Value);
-    }
-}
+    }}

Backend/ERPCore/Controllers/ProductionRunsController.cs

@@ -0,0 +1,173 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Production;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Production run endpoints (docs/30-BACKEND-PHASE2.md §D.2–D.3).</summary>
+[Route("api/v1/production-runs")]
+[Authorize(Policy = NavPolicies.Prefix + "production")]
+public sealed class ProductionRunsController : ApiControllerBase
+{
+    private readonly IProductionRunService _runs;
+
+    public ProductionRunsController(IProductionRunService runs) => _runs = runs;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<RunSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<RunSummaryDto>>> List(
+        [FromQuery] PageQuery query,
+        [FromQuery] ProductionRunStatus? status,
+        [FromQuery] int? templateId,
+        [FromQuery] int? warehouseId,
+        CancellationToken ct)
+        => Ok(await _runs.ListAsync(query, status, templateId, warehouseId, ct));
+
+    /// <summary>Produced-items report (FR-MFG-13): one row per run that has produced
+    /// something, plus a summary total over every filtered row.</summary>
+    [HttpGet("produced")]
+    [ProducesResponseType(typeof(ProducedListResponseDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<ProducedListResponseDto>> ListProduced(
+        [FromQuery] DateOnly? from,
+        [FromQuery] DateOnly? to,
+        [FromQuery] int? templateId,
+        [FromQuery] int? warehouseId,
+        [FromQuery] ProductionRunStatus? status,
+        CancellationToken ct)
+        => Ok(await _runs.ListProducedAsync(from, to, templateId, warehouseId, status, ct));
+
+    [HttpGet("{runId:int}")]
+    [ProducesResponseType(typeof(RunGraphDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<RunGraphDto>> GetById(int runId, CancellationToken ct)
+    {
+        var result = await _runs.GetAsync(runId, ct);
+        if (result is null) return NotFound();
+
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(RunGraphDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<RunGraphDto>> Create([FromBody] CreateRunRequest request, CancellationToken ct)
+    {
+        var result = await _runs.CreateAsync(request, ct);
+
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/production-runs/{result.Value.RunId}", result.Value);
+    }
+
+    [HttpPut("{runId:int}/stages/{runStageId:int}/quantities")]
+    [ProducesResponseType(typeof(RunStageDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<RunStageDto>> UpdateQuantities(
+        int runId, int runStageId, [FromBody] UpdateStageQuantitiesRequest request, CancellationToken ct)
+        => Ok(await _runs.UpdateStageQuantitiesAsync(runId, runStageId, request, ct));
+
+    // --- stage actions (docs/30 §D.3) ---------------------------------------
+    //
+    // Idempotency-Key is accepted on every action to match the Phase-1 contract (docs/11
+    // §1.6) but, as in GrnService.ConfirmAsync, it is not stored. Replay safety comes from
+    // the status guards instead: a double-fire finds the stage already moved on and gets a
+    // 409, which docs/21 §6 tells the client to treat as a silent refetch. Recorded as a
+    // deviation from §D.3's "idempotency-key honored".
+
+    [HttpPost("{runId:int}/stages/{runStageId:int}/start")]
+    [ProducesResponseType(typeof(StartStageResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<StartStageResultDto>> Start(
+        int runId, int runStageId,
+        [FromHeader(Name = "Idempotency-Key")] string? idempotencyKey,
+        CancellationToken ct)
+        => Ok(await _runs.StartStageAsync(runId, runStageId, ct));
+
+    [HttpPost("{runId:int}/stages/{runStageId:int}/complete")]
+    [ProducesResponseType(typeof(RunStageDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<RunStageDto>> Complete(
+        int runId, int runStageId, [FromBody] CompleteStageRequest request,
+        [FromHeader(Name = "Idempotency-Key")] string? idempotencyKey,
+        CancellationToken ct)
+        => Ok(await _runs.CompleteStageAsync(runId, runStageId, request, ct));
+
+    [HttpPost("{runId:int}/stages/{runStageId:int}/approve")]
+    [ProducesResponseType(typeof(ApproveStageResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<ApproveStageResultDto>> Approve(
+        int runId, int runStageId, [FromBody] ApproveStageRequest? request,
+        [FromHeader(Name = "Idempotency-Key")] string? idempotencyKey,
+        CancellationToken ct)
+        => Ok(await _runs.ApproveStageAsync(runId, runStageId, request ?? new ApproveStageRequest(), ct));
+
+    [HttpPost("{runId:int}/stages/{runStageId:int}/transfer")]
+    [ProducesResponseType(typeof(TransferResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<TransferResultDto>> Transfer(
+        int runId, int runStageId, [FromBody] TransferRemainderRequest request,
+        [FromHeader(Name = "Idempotency-Key")] string? idempotencyKey,
+        CancellationToken ct)
+        => Ok(await _runs.TransferAsync(runId, runStageId, request, ct));
+
+    [HttpPost("{runId:int}/inputs/{runInputId:int}/return-leftover")]
+    [ProducesResponseType(typeof(ReturnLeftoverResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<ReturnLeftoverResultDto>> ReturnLeftover(
+        int runId, int runInputId, [FromBody] ReturnLeftoverRequest request,
+        [FromHeader(Name = "Idempotency-Key")] string? idempotencyKey,
+        CancellationToken ct)
+        => Ok(await _runs.ReturnLeftoverAsync(runId, runInputId, request, ct));
+
+    [HttpPost("{runId:int}/stages/{runStageId:int}/reject-intake")]
+    [ProducesResponseType(typeof(RejectIntakeResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<RejectIntakeResultDto>> RejectIntake(
+        int runId, int runStageId, [FromBody] RejectRequest? request,
+        [FromHeader(Name = "Idempotency-Key")] string? idempotencyKey,
+        CancellationToken ct)
+        => Ok(await _runs.RejectIntakeAsync(runId, runStageId, request ?? new RejectRequest(), ct));
+
+    /// <summary>Terminal reject — resets the whole run for a rework pass (FR-MFG-16).</summary>
+    [HttpPost("{runId:int}/stages/{runStageId:int}/reject")]
+    [ProducesResponseType(typeof(TerminalRejectResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<TerminalRejectResultDto>> Reject(
+        int runId, int runStageId, [FromBody] RejectRequest? request,
+        [FromHeader(Name = "Idempotency-Key")] string? idempotencyKey,
+        CancellationToken ct)
+        => Ok(await _runs.RejectTerminalAsync(runId, runStageId, request ?? new RejectRequest(), ct));
+
+    [HttpPost("{runId:int}/cancel")]
+    [ProducesResponseType(typeof(CancelRunResultDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<CancelRunResultDto>> Cancel(
+        int runId, [FromBody] CancelRunRequest request,
+        [FromHeader(Name = "Idempotency-Key")] string? idempotencyKey,
+        CancellationToken ct)
+        => Ok(await _runs.CancelAsync(runId, request, ct));
+}

Backend/ERPCore/Controllers/ProductionTemplatesController.cs

@@ -0,0 +1,76 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Production;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Production template endpoints (docs/30-BACKEND-PHASE2.md §D.1).</summary>
+[Route("api/v1/production-templates")]
+[Authorize(Policy = NavPolicies.Prefix + "production")]
+public sealed class ProductionTemplatesController : ApiControllerBase
+{
+    private readonly IProductionTemplateService _templates;
+
+    public ProductionTemplatesController(IProductionTemplateService templates) => _templates = templates;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<TemplateSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<TemplateSummaryDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _templates.ListAsync(query, status, ct));
+
+    [HttpGet("{templateId:int}")]
+    [ProducesResponseType(typeof(TemplateGraphDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<TemplateGraphDto>> GetById(int templateId, CancellationToken ct)
+    {
+        var result = await _templates.GetAsync(templateId, ct);
+        if (result is null) return NotFound();
+
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(TemplateGraphDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<TemplateGraphDto>> Create(
+        [FromBody] SaveTemplateRequest request, CancellationToken ct)
+    {
+        var result = await _templates.CreateAsync(request, ct);
+
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/production-templates/{result.Value.TemplateId}", result.Value);
+    }
+
+    [HttpPut("{templateId:int}")]
+    [ProducesResponseType(typeof(TemplateGraphDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<TemplateGraphDto>> Update(
+        int templateId, [FromBody] SaveTemplateRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _templates.UpdateAsync(templateId, request, expected, ct);
+
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPatch("{templateId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(
+        int templateId, [FromBody] UpdateTemplateStatusRequest request, CancellationToken ct)
+    {
+        await _templates.SetStatusAsync(templateId, request.Status, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/PurchaseInvoicesController.cs

@@ -0,0 +1,105 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Grn;
+using ERPCore.Dtos.Procurement;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Purchase invoice endpoints — vendor invoices consolidating Confirmed GRNs.</summary>
+[Route("api/v1/purchase-invoices")]
+[Authorize(Policy = NavPolicies.Prefix + "procurement")]
+public sealed class PurchaseInvoicesController : ApiControllerBase
+{
+    private readonly IPurchaseInvoiceService _invoices;
+    private readonly IPurchaseInvoicePaymentService _payments;
+
+    public PurchaseInvoicesController(IPurchaseInvoiceService invoices, IPurchaseInvoicePaymentService payments)
+    {
+        _invoices = invoices;
+        _payments = payments;
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<PurchaseInvoiceSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<PurchaseInvoiceSummaryDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] PurchaseInvoiceStatus? status, [FromQuery] int? vendorId, CancellationToken ct)
+        => Ok(await _invoices.ListAsync(query, status, vendorId, ct));
+
+    /// <summary>Confirmed, not-yet-invoiced GRNs for a vendor — candidates for a new/edited invoice.</summary>
+    [HttpGet("eligible-grns")]
+    [ProducesResponseType(typeof(IReadOnlyList<GrnEligibleForInvoiceDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<IReadOnlyList<GrnEligibleForInvoiceDto>>> EligibleGrns([FromQuery] int vendorId, CancellationToken ct)
+        => Ok(await _invoices.ListEligibleGrnsAsync(vendorId, ct));
+
+    [HttpGet("{purchaseInvoiceId:int}")]
+    [ProducesResponseType(typeof(PurchaseInvoiceDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<PurchaseInvoiceDto>> GetById(int purchaseInvoiceId, CancellationToken ct)
+    {
+        var result = await _invoices.GetAsync(purchaseInvoiceId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(PurchaseInvoiceDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<PurchaseInvoiceDto>> Create([FromBody] CreatePurchaseInvoiceRequest request, CancellationToken ct)
+    {
+        var result = await _invoices.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/purchase-invoices/{result.Value.PurchaseInvoiceId}", result.Value);
+    }
+
+    [HttpPut("{purchaseInvoiceId:int}")]
+    [ProducesResponseType(typeof(PurchaseInvoiceDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<PurchaseInvoiceDto>> Update(int purchaseInvoiceId, [FromBody] UpdatePurchaseInvoiceRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _invoices.UpdateAsync(purchaseInvoiceId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost("{purchaseInvoiceId:int}/post")]
+    [ProducesResponseType(typeof(PurchaseInvoiceDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PurchaseInvoiceDto>> Post(int purchaseInvoiceId, CancellationToken ct)
+        => Ok(await _invoices.PostAsync(purchaseInvoiceId, ct));
+
+    [HttpPost("{purchaseInvoiceId:int}/cancel")]
+    [ProducesResponseType(typeof(PurchaseInvoiceDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PurchaseInvoiceDto>> Cancel(int purchaseInvoiceId, CancellationToken ct)
+        => Ok(await _invoices.CancelAsync(purchaseInvoiceId, ct));
+
+    /// <summary>Pay the vendor against this invoice's balance, in full or in installments; posts a real GL journal entry.</summary>
+    [HttpPost("{purchaseInvoiceId:int}/payments")]
+    [ProducesResponseType(typeof(PurchaseInvoicePaymentDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PurchaseInvoicePaymentDto>> Pay(int purchaseInvoiceId, [FromBody] CreatePurchaseInvoicePaymentRequest request, CancellationToken ct)
+    {
+        var dto = await _payments.PayAsync(purchaseInvoiceId, request, ct);
+        return Created($"/api/v1/purchase-invoices/{purchaseInvoiceId}/payments/{dto.PurchaseInvoicePaymentId}", dto);
+    }
+
+    /// <summary>Payment history for this invoice, newest first.</summary>
+    [HttpGet("{purchaseInvoiceId:int}/payments")]
+    [ProducesResponseType(typeof(IReadOnlyList<PurchaseInvoicePaymentDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<IReadOnlyList<PurchaseInvoicePaymentDto>>> ListPayments(int purchaseInvoiceId, CancellationToken ct)
+        => Ok(await _payments.ListAsync(purchaseInvoiceId, ct));
+}

Backend/ERPCore/Controllers/PurchaseOrdersController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Procurement;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Purchase-order endpoints (docs/11 §3.3).</summary>
 [Route("api/v1/purchase-orders")]
+[Authorize(Policy = NavPolicies.Prefix + "procurement")]
 public sealed class PurchaseOrdersController : ApiControllerBase
 {
     private readonly IPurchaseOrderService _pos;
@@ -32,7 +35,7 @@ public sealed class PurchaseOrdersController : ApiControllerBase
         return Ok(result.Value);
     }
 
-    /// <summary>Create a PO — auto-approved on creation in Phase 1 (FR-PROC-04). Totals computed server-side.</summary>
+    /// <summary>Create a PO — non-draft is issued straight into PendingApproval (FR-PROC-04). Totals computed server-side.</summary>
     [HttpPost]
     [ProducesResponseType(typeof(PurchaseOrderDto), StatusCodes.Status201Created)]
     [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
@@ -57,13 +60,48 @@ public sealed class PurchaseOrdersController : ApiControllerBase
         return Ok(result.Value);
     }
 
-    /// <summary>Approve — no-op in Phase 1 (POs auto-approve); transitions PendingApproval→Approved when enabled.</summary>
-    [HttpPost("{poId:int}/approve")]
+    /// <summary>Submit a Draft PO (Draft → PendingApproval). 409 PO_NOT_EDITABLE if not Draft.</summary>
+    [HttpPost("{poId:int}/submit")]
     [ProducesResponseType(typeof(PurchaseOrderDto), StatusCodes.Status200OK)]
     [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PurchaseOrderDto>> Submit(int poId, CancellationToken ct)
+        => Ok(await _pos.SubmitAsync(poId, ct));
+
+    /// <summary>Delete a PO — permitted only while Draft (409 PO_NOT_EDITABLE otherwise).</summary>
+    [HttpDelete("{poId:int}")]
+    [Authorize(Policy = NavPolicies.Prefix + "procurement" + NavPolicies.ActionSeparator + NavPolicies.DeleteAction)]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int poId, CancellationToken ct)
+    {
+        await _pos.DeleteAsync(poId, ct);
+        return NoContent();
+    }
+
+    /// <summary>Approve — PendingApproval → Approved. 403 PO_APPROVAL_FORBIDDEN if the caller
+    /// isn't an Admin or is the PO's own creator; 409 PO_NOT_PENDING_APPROVAL otherwise.</summary>
+    [HttpPost("{poId:int}/approve")]
+    [Authorize(Policy = NavPolicies.Prefix + "procurement" + NavPolicies.ActionSeparator + NavPolicies.ApproveAction)]
+    [ProducesResponseType(typeof(PurchaseOrderDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
     public async Task<ActionResult<PurchaseOrderDto>> Approve(int poId, CancellationToken ct)
         => Ok(await _pos.ApproveAsync(poId, ct));
 
+    /// <summary>Reject — PendingApproval → Draft, so the requester can revise and resubmit.
+    /// Same caller restrictions as <see cref="Approve"/>.</summary>
+    [HttpPost("{poId:int}/reject")]
+    [Authorize(Policy = NavPolicies.Prefix + "procurement" + NavPolicies.ActionSeparator + NavPolicies.ApproveAction)]
+    [ProducesResponseType(typeof(PurchaseOrderDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<PurchaseOrderDto>> Reject(int poId, [FromBody] RejectPurchaseOrderRequest request, CancellationToken ct)
+        => Ok(await _pos.RejectAsync(poId, request.Reason, ct));
+
     /// <summary>Cancel — 409 if any goods have been received against the PO.</summary>
     [HttpPost("{poId:int}/cancel")]
     [ProducesResponseType(typeof(PurchaseOrderDto), StatusCodes.Status200OK)]

Backend/ERPCore/Controllers/PurchaseReturnsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Procurement;
 using ERPCore.Services.Interfaces;
@@ -7,6 +9,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Purchase-return endpoints (docs/11 §3.4).</summary>
 [Route("api/v1/purchase-returns")]
+[Authorize(Policy = NavPolicies.Prefix + "procurement")]
 public sealed class PurchaseReturnsController : ApiControllerBase
 {
     private readonly IPurchaseReturnService _returns;

Backend/ERPCore/Controllers/RequisitionsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Procurement;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Purchase-requisition endpoints (docs/11 §3.1).</summary>
 [Route("api/v1/requisitions")]
+[Authorize(Policy = NavPolicies.Prefix + "procurement")]
 public sealed class RequisitionsController : ApiControllerBase
 {
     private readonly IRequisitionService _requisitions;

Backend/ERPCore/Controllers/RfqsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Procurement;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>RFQ &amp; quotation endpoints (docs/11 §3.2).</summary>
 [Route("api/v1/rfqs")]
+[Authorize(Policy = NavPolicies.Prefix + "procurement")]
 public sealed class RfqsController : ApiControllerBase
 {
     private readonly IRfqService _rfqs;

Backend/ERPCore/Controllers/RolesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Rbac;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Role CRUD + permission assignment (mirrors AuthHex's Role; see docs/10 C.9).</summary>
 [Route("api/v1/roles")]
+[Authorize(Policy = NavPolicies.Prefix + "settings")]
 public sealed class RolesController : ApiControllerBase
 {
     private readonly IRoleService _roles;
@@ -64,6 +67,7 @@ public sealed class RolesController : ApiControllerBase
     }
 
     [HttpDelete("{roleId:int}")]
+    [Authorize(Policy = NavPolicies.Prefix + "settings" + NavPolicies.ActionSeparator + NavPolicies.DeleteAction)]
     [ProducesResponseType(StatusCodes.Status204NoContent)]
     [ProducesResponseType(StatusCodes.Status404NotFound)]
     [ProducesResponseType(StatusCodes.Status409Conflict)]

Backend/ERPCore/Controllers/SalesConfigController.cs

@@ -0,0 +1,46 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Config;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>
+/// Sales configuration endpoints — the singleton "allow cash customer" toggle.
+/// <para>
+/// <b>Authorization:</b> gated on the Sales nav policy (the New Sale form has to read it), same
+/// Phase-1 posture as <see cref="BranchConfigController"/> — any Sales user can flip the flag
+/// until per-endpoint RBAC lands.
+/// </para>
+/// </summary>
+[Route("api/v1/sales-config")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class SalesConfigController : ApiControllerBase
+{
+    private readonly ISalesConfigService _config;
+
+    public SalesConfigController(ISalesConfigService config) => _config = config;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(SalesConfigDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<SalesConfigDto>> Get(CancellationToken ct)
+    {
+        var result = await _config.GetAsync(ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPut]
+    [ProducesResponseType(typeof(SalesConfigDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<SalesConfigDto>> Update(
+        [FromBody] UpdateSalesConfigRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _config.UpdateAsync(request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+}

Backend/ERPCore/Controllers/SalesDayEndController.cs

@@ -0,0 +1,53 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Sales;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Cashier day-end close-out — locks a cashier's Posted sales slips for a business
+/// date and posts one consolidated GL journal entry for the day (docs/14 Sales API).</summary>
+[Route("api/v1/sales-day-end")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class SalesDayEndController : ApiControllerBase
+{
+    private readonly ISalesDayEndService _dayEnds;
+
+    public SalesDayEndController(ISalesDayEndService dayEnds) => _dayEnds = dayEnds;
+
+    /// <summary>List day-end closes, newest first.</summary>
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<SalesDayEndSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<SalesDayEndSummaryDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] int? cashierUserId, CancellationToken ct)
+        => Ok(await _dayEnds.ListAsync(query, cashierUserId, ct));
+
+    /// <summary>What closing this cashier/date right now would include (or the existing close's totals, if already closed).</summary>
+    [HttpGet("preview")]
+    [ProducesResponseType(typeof(SalesDayEndPreviewDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<SalesDayEndPreviewDto>> Preview(
+        [FromQuery] int cashierUserId, [FromQuery] DateOnly? businessDate, CancellationToken ct)
+        => Ok(await _dayEnds.PreviewAsync(cashierUserId, businessDate ?? DateOnly.FromDateTime(DateTime.UtcNow), ct));
+
+    [HttpGet("{salesDayEndId:int}")]
+    [ProducesResponseType(typeof(SalesDayEndDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesDayEndDto>> GetById(int salesDayEndId, CancellationToken ct)
+    {
+        var dto = await _dayEnds.GetAsync(salesDayEndId, ct);
+        return dto is null ? NotFound() : Ok(dto);
+    }
+
+    /// <summary>Close the day: lock every Posted slip for (CashierUserId, BusinessDate) and post the
+    /// consolidated GL journal entry. Idempotent — closing an already-closed date replays it.</summary>
+    [HttpPost]
+    [ProducesResponseType(typeof(SalesDayEndDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<SalesDayEndDto>> Close([FromBody] CreateSalesDayEndRequest request, CancellationToken ct)
+    {
+        var dto = await _dayEnds.CloseAsync(request, ct);
+        return Created($"/api/v1/sales-day-end/{dto.SalesDayEndId}", dto);
+    }
+}

Backend/ERPCore/Controllers/SalesInvoicesController.cs

@@ -0,0 +1,176 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Sales;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/sales-invoices")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class SalesInvoicesController : ApiControllerBase
+{
+    private readonly ISalesInvoiceService _invoices;
+    private readonly ISalesInvoicePaymentService _payments;
+    private readonly ISalesPricingService _pricing;
+    private readonly ISalesDomainService _sales;
+    private readonly IStockService _stock;
+
+    public SalesInvoicesController(
+        ISalesInvoiceService invoices, ISalesInvoicePaymentService payments, ISalesPricingService pricing,
+        ISalesDomainService sales, IStockService stock)
+    {
+        _invoices = invoices;
+        _payments = payments;
+        _pricing = pricing;
+        _sales = sales;
+        _stock = stock;
+    }
+
+    // Lets the New Sale form warn, per line, when qty exceeds the stock a sale can issue — under
+    // the "sales" policy, since sales users may not hold the "stock" nav permission. Non-stocked
+    // items (services) are never short, so they report IsStocked = false and no limit.
+    [HttpGet("stock-availability")]
+    [ProducesResponseType(typeof(SalesStockAvailabilityDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesStockAvailabilityDto>> StockAvailability(
+        [FromQuery] int itemId, [FromQuery] int warehouseId, CancellationToken ct)
+    {
+        bool isStocked;
+        try
+        {
+            isStocked = await _sales.IsStockedItemAsync(itemId, ct);
+        }
+        catch (InvalidOperationException)
+        {
+            return NotFound();
+        }
+        var available = isStocked ? (await _stock.GetOnHandAsync(itemId, warehouseId, ct)).Available : 0m;
+        return Ok(new SalesStockAvailabilityDto(itemId, warehouseId, isStocked, available));
+    }
+
+    // Feeds New Sale's "Add item" dropdown with each item's issuable stock at the sale's warehouse.
+    // Under "sales" for the same reason as above; items absent from the list have no stock there.
+    [HttpGet("stock-summary")]
+    [ProducesResponseType(typeof(IReadOnlyList<SalesItemStockDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<IReadOnlyList<SalesItemStockDto>>> StockSummary([FromQuery] int warehouseId, CancellationToken ct)
+    {
+        var available = await _stock.GetAvailableByItemAsync(warehouseId, ct);
+        return Ok(available.Select(kv => new SalesItemStockDto(kv.Key, kv.Value)).ToList());
+    }
+
+    // Lets the New Sale form pre-fill Unit price for items with no flat selling price, using the
+    // same resolution the server applies on save.
+    [HttpGet("suggested-price")]
+    [ProducesResponseType(typeof(SalesSuggestedPriceDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesSuggestedPriceDto>> SuggestedPrice(
+        [FromQuery] int itemId, [FromQuery] int warehouseId, CancellationToken ct)
+    {
+        try
+        {
+            var price = await _pricing.ResolveAsync(itemId, warehouseId, null, false, ct);
+            return Ok(new SalesSuggestedPriceDto(itemId, warehouseId, price.UnitPrice, price.PriceSource));
+        }
+        catch (InvalidOperationException)
+        {
+            return NotFound();
+        }
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<SalesInvoiceSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<SalesInvoiceSummaryDto>>> List(
+        [FromQuery] PageQuery query,
+        [FromQuery] SalesInvoiceStatus? status,
+        [FromQuery] int? customerId,
+        [FromQuery] int? warehouseId,
+        [FromQuery] int? branchId,
+        [FromQuery] DateOnly? from,
+        [FromQuery] DateOnly? to,
+        [FromQuery] int? createdBy,
+        [FromQuery] bool? paid,
+        CancellationToken ct)
+        => Ok(await _invoices.ListAsync(query, status, customerId, warehouseId, branchId, from, to, createdBy, paid, ct));
+
+    [HttpGet("{salesInvoiceId:int}")]
+    [ProducesResponseType(typeof(SalesInvoiceDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesInvoiceDto>> GetById(int salesInvoiceId, CancellationToken ct)
+    {
+        var result = await _invoices.GetAsync(salesInvoiceId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpGet("{salesInvoiceId:int}/posting-check")]
+    [ProducesResponseType(typeof(SalesInvoicePostingCheckDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesInvoicePostingCheckDto>> PostingCheck(int salesInvoiceId, CancellationToken ct)
+        => Ok(await _invoices.CheckPostingAsync(salesInvoiceId, ct));
+
+    [HttpPost]
+    [ProducesResponseType(typeof(SalesInvoiceDto), StatusCodes.Status201Created)]
+    public async Task<ActionResult<SalesInvoiceDto>> Create([FromBody] CreateSalesInvoiceRequest request, CancellationToken ct)
+    {
+        var result = await _invoices.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/sales-invoices/{result.Value.SalesInvoiceId}", result.Value);
+    }
+
+    [HttpPut("{salesInvoiceId:int}")]
+    [ProducesResponseType(typeof(SalesInvoiceDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<SalesInvoiceDto>> Update(int salesInvoiceId, [FromBody] UpdateSalesInvoiceRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _invoices.UpdateAsync(salesInvoiceId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost("{salesInvoiceId:int}/post")]
+    [ProducesResponseType(typeof(SalesInvoiceDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<SalesInvoiceDto>> Post(int salesInvoiceId, CancellationToken ct)
+        => Ok(await _invoices.PostAsync(salesInvoiceId, ct));
+
+    [HttpPost("{salesInvoiceId:int}/cancel")]
+    [ProducesResponseType(typeof(SalesInvoiceDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<SalesInvoiceDto>> Cancel(int salesInvoiceId, CancellationToken ct)
+        => Ok(await _invoices.CancelAsync(salesInvoiceId, ct));
+
+    /// <summary>Pay the customer's balance against this invoice, in full or in installments; posts a real GL journal entry.</summary>
+    [HttpPost("{salesInvoiceId:int}/payments")]
+    [ProducesResponseType(typeof(SalesInvoicePaymentDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<SalesInvoicePaymentDto>> Pay(int salesInvoiceId, [FromBody] CreateSalesInvoicePaymentRequest request, CancellationToken ct)
+    {
+        var dto = await _payments.PayAsync(salesInvoiceId, request, ct);
+        return Created($"/api/v1/sales-invoices/{salesInvoiceId}/payments/{dto.SalesInvoicePaymentId}", dto);
+    }
+
+    /// <summary>
+    /// Pay several Posted invoices of one (non-cash) customer at once, split across payment lines;
+    /// applied oldest invoice first under a single GL journal entry. Returns one payment per split.
+    /// </summary>
+    [HttpPost("payments/bulk")]
+    [ProducesResponseType(typeof(IReadOnlyList<SalesInvoicePaymentDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<IReadOnlyList<SalesInvoicePaymentDto>>> PayBulk([FromBody] CreateBulkSalesInvoicePaymentRequest request, CancellationToken ct)
+        => Ok(await _payments.PayBulkAsync(request, ct));
+
+    /// <summary>Payment history for this invoice, newest first.</summary>
+    [HttpGet("{salesInvoiceId:int}/payments")]
+    [ProducesResponseType(typeof(IReadOnlyList<SalesInvoicePaymentDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<IReadOnlyList<SalesInvoicePaymentDto>>> ListPayments(int salesInvoiceId, CancellationToken ct)
+        => Ok(await _payments.ListAsync(salesInvoiceId, ct));
+}

Backend/ERPCore/Controllers/SalesReportsController.cs

@@ -0,0 +1,38 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Sales;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/reports/sales")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class SalesReportsController : ApiControllerBase
+{
+    private readonly ISalesReportService _reports;
+
+    public SalesReportsController(ISalesReportService reports) => _reports = reports;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(IReadOnlyList<SalesReportDefinitionDto>), StatusCodes.Status200OK)]
+    public ActionResult<IReadOnlyList<SalesReportDefinitionDto>> ListReports()
+        => Ok(_reports.ListReports());
+
+    [HttpGet("{reportId}")]
+    [ProducesResponseType(typeof(SalesReportDefinitionDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public ActionResult<SalesReportDefinitionDto> GetReport(string reportId)
+    {
+        var report = _reports.GetReport(reportId);
+        return report is null ? NotFound() : Ok(report);
+    }
+
+    [HttpPost("query")]
+    [ProducesResponseType(typeof(SalesReportQueryResponse), StatusCodes.Status200OK)]
+    public async Task<ActionResult<SalesReportQueryResponse>> Query([FromBody] SalesReportQueryRequest request, CancellationToken ct)
+    {
+        var rows = await _reports.QueryAsync(request.ReportType, request.From, request.To, request.ItemId, request.CustomerId, request.WarehouseId, ct);
+        return Ok(new SalesReportQueryResponse(request.ReportType, request.From, request.To, rows));
+    }
+}

Backend/ERPCore/Controllers/SalesReturnsController.cs

@@ -0,0 +1,52 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Sales;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Sales-return endpoints — customer returns of previously sold goods.</summary>
+[Route("api/v1/sales-returns")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class SalesReturnsController : ApiControllerBase
+{
+    private readonly ISalesReturnService _returns;
+
+    public SalesReturnsController(ISalesReturnService returns) => _returns = returns;
+
+    /// <summary>List posted returns, newest first.</summary>
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<SalesReturnSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<SalesReturnSummaryDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] int? customerId, [FromQuery] int? warehouseId, CancellationToken ct)
+        => Ok(await _returns.ListAsync(query, customerId, warehouseId, ct));
+
+    /// <summary>Remaining returnable qty per line of one sales invoice (invoiced qty minus already-returned).</summary>
+    [HttpGet("remaining")]
+    [ProducesResponseType(typeof(IReadOnlyList<SalesInvoiceLineRemainingDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<IReadOnlyList<SalesInvoiceLineRemainingDto>>> GetRemaining([FromQuery] int salesInvoiceId, CancellationToken ct)
+        => Ok(await _returns.GetRemainingByInvoiceAsync(salesInvoiceId, ct));
+
+    /// <summary>Get one return with its lines and the ledger entries it posted.</summary>
+    [HttpGet("{returnId:int}")]
+    [ProducesResponseType(typeof(SalesReturnDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesReturnDto>> GetById(int returnId, CancellationToken ct)
+    {
+        var dto = await _returns.GetAsync(returnId, ct);
+        return dto is null ? NotFound() : Ok(dto);
+    }
+
+    /// <summary>Create + auto-post a return (inbound movement).</summary>
+    [HttpPost]
+    [ProducesResponseType(typeof(SalesReturnDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<SalesReturnDto>> Create([FromBody] CreateSalesReturnRequest request, CancellationToken ct)
+    {
+        var dto = await _returns.CreateAsync(request, ct);
+        return Created($"/api/v1/sales-returns/{dto.ReturnId}", dto);
+    }
+}

Backend/ERPCore/Controllers/SalesSlipPromotionsController.cs

@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Dtos.Sales;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/sales-slips/{salesSlipId:int}/free-issue-suggestions")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class SalesSlipPromotionsController : ApiControllerBase
+{
+    private readonly ISalesPromotionSuggestionService _suggestions;
+
+    public SalesSlipPromotionsController(ISalesPromotionSuggestionService suggestions) => _suggestions = suggestions;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(SalesFreeIssueSuggestionDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesFreeIssueSuggestionDto>> Get(int salesSlipId, CancellationToken ct)
+    {
+        var result = await _suggestions.GetFreeIssueSuggestionsAsync(salesSlipId, ct);
+        return result is null ? NotFound() : Ok(result);
+    }
+}

Backend/ERPCore/Controllers/SalesSlipsController.cs

@@ -0,0 +1,76 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Sales;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/sales-slips")]
+[Authorize(Policy = NavPolicies.Prefix + "sales")]
+public sealed class SalesSlipsController : ApiControllerBase
+{
+    private readonly ISalesSlipService _slips;
+
+    public SalesSlipsController(ISalesSlipService slips) => _slips = slips;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<SalesSlipSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<SalesSlipSummaryDto>>> List(
+        [FromQuery] PageQuery query,
+        [FromQuery] SalesSlipStatus? status,
+        [FromQuery] int? customerId,
+        [FromQuery] int? warehouseId,
+        CancellationToken ct)
+        => Ok(await _slips.ListAsync(query, status, customerId, warehouseId, ct));
+
+    [HttpGet("{salesSlipId:int}")]
+    [ProducesResponseType(typeof(SalesSlipDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesSlipDto>> GetById(int salesSlipId, CancellationToken ct)
+    {
+        var result = await _slips.GetAsync(salesSlipId, ct);
+        if (result is null) return NotFound();
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpGet("{salesSlipId:int}/posting-check")]
+    [ProducesResponseType(typeof(SalesSlipPostingCheckDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SalesSlipPostingCheckDto>> PostingCheck(int salesSlipId, CancellationToken ct)
+        => Ok(await _slips.CheckPostingAsync(salesSlipId, ct));
+
+    [HttpPost]
+    [ProducesResponseType(typeof(SalesSlipDto), StatusCodes.Status201Created)]
+    public async Task<ActionResult<SalesSlipDto>> Create([FromBody] CreateSalesSlipRequest request, CancellationToken ct)
+    {
+        var result = await _slips.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/sales-slips/{result.Value.SalesSlipId}", result.Value);
+    }
+
+    [HttpPut("{salesSlipId:int}")]
+    [ProducesResponseType(typeof(SalesSlipDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<SalesSlipDto>> Update(int salesSlipId, [FromBody] UpdateSalesSlipRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _slips.UpdateAsync(salesSlipId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost("{salesSlipId:int}/post")]
+    [ProducesResponseType(typeof(SalesSlipDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<SalesSlipDto>> Post(int salesSlipId, CancellationToken ct)
+        => Ok(await _slips.PostAsync(salesSlipId, ct));
+
+    [HttpPost("{salesSlipId:int}/cancel")]
+    [ProducesResponseType(typeof(SalesSlipDto), StatusCodes.Status200OK)]
+    public async Task<ActionResult<SalesSlipDto>> Cancel(int salesSlipId, CancellationToken ct)
+        => Ok(await _slips.CancelAsync(salesSlipId, ct));
+}

Backend/ERPCore/Controllers/SearchController.cs

@@ -0,0 +1,20 @@
+using ERPCore.Dtos.Search;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/search")]
+public sealed class SearchController : ApiControllerBase
+{
+    private readonly IGlobalSearchService _search;
+
+    public SearchController(IGlobalSearchService search) => _search = search;
+
+    [HttpGet]
+    public async Task<ActionResult<IReadOnlyList<GlobalSearchResultDto>>> Get([FromQuery] string q, CancellationToken ct)
+    {
+        var results = await _search.SearchAsync(q, 6, ct);
+        return Ok(results);
+    }
+}

Backend/ERPCore/Controllers/StockAdjustmentsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Stock;
 using ERPCore.Services.Interfaces;
@@ -7,6 +9,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Stock-adjustment endpoints (docs/11 §5.5).</summary>
 [Route("api/v1/stock-adjustments")]
+[Authorize(Policy = NavPolicies.Prefix + "stock")]
 public sealed class StockAdjustmentsController : ApiControllerBase
 {
     private readonly IAdjustmentService _adjustments;
@@ -17,8 +20,8 @@ public sealed class StockAdjustmentsController : ApiControllerBase
     [HttpGet]
     [ProducesResponseType(typeof(PagedResponse<AdjustmentSummaryDto>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedResponse<AdjustmentSummaryDto>>> List(
-        [FromQuery] PageQuery query, [FromQuery] int? warehouseId, [FromQuery] int? reasonCodeId, CancellationToken ct)
-        => Ok(await _adjustments.ListAsync(query, warehouseId, reasonCodeId, ct));
+        [FromQuery] PageQuery query, [FromQuery] int? warehouseId, [FromQuery] int? branchId, [FromQuery] int? reasonCodeId, CancellationToken ct)
+        => Ok(await _adjustments.ListAsync(query, warehouseId, branchId, reasonCodeId, ct));
 
     /// <summary>Get one adjustment with its lines and the ledger entries it posted.</summary>
     [HttpGet("{adjustmentId:int}")]

Backend/ERPCore/Controllers/StockController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Procurement;
 using ERPCore.Dtos.Stock;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Stock enquiry, ledger, valuation and reorder-alert endpoints (docs/11 §5.1–5.3, §5.7).</summary>
 [Route("api/v1/stock")]
+[Authorize(Policy = NavPolicies.Prefix + "stock")]
 public sealed class StockController : ApiControllerBase
 {
     private readonly IStockService _stock;
@@ -28,8 +31,8 @@ public sealed class StockController : ApiControllerBase
     [HttpGet("on-hand/list")]
     [ProducesResponseType(typeof(PagedResponse<StockOnHandDto>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedResponse<StockOnHandDto>>> OnHandList(
-        [FromQuery] int? itemId, [FromQuery] int? warehouseId, [FromQuery] PageQuery query, CancellationToken ct)
-        => Ok(await _stock.GetOnHandListAsync(itemId, warehouseId, query, ct));
+        [FromQuery] int? itemId, [FromQuery] int? warehouseId, [FromQuery] int? branchId, [FromQuery] PageQuery query, CancellationToken ct)
+        => Ok(await _stock.GetOnHandListAsync(itemId, warehouseId, branchId, query, ct));
 
     /// <summary>
     /// Immutable movement history. <c>sourceDocType</c>/<c>sourceDocId</c> answer "what did
@@ -39,11 +42,11 @@ public sealed class StockController : ApiControllerBase
     [HttpGet("ledger")]
     [ProducesResponseType(typeof(PagedResponse<StockLedgerRowDto>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedResponse<StockLedgerRowDto>>> Ledger(
-        [FromQuery] int? itemId, [FromQuery] int? warehouseId,
+        [FromQuery] int? itemId, [FromQuery] int? warehouseId, [FromQuery] int? branchId,
         [FromQuery] DateOnly? from, [FromQuery] DateOnly? to,
         [FromQuery] string? sourceDocType, [FromQuery] int? sourceDocId,
         [FromQuery] PageQuery query, CancellationToken ct)
-        => Ok(await _stock.GetLedgerAsync(itemId, warehouseId, from, to, sourceDocType, sourceDocId, query, ct));
+        => Ok(await _stock.GetLedgerAsync(itemId, warehouseId, branchId, from, to, sourceDocType, sourceDocId, query, ct));
 
     [HttpGet("valuation")]
     [ProducesResponseType(typeof(StockValuationDto), StatusCodes.Status200OK)]
@@ -54,8 +57,8 @@ public sealed class StockController : ApiControllerBase
     [HttpGet("reorder-alerts")]
     [ProducesResponseType(typeof(PagedResponse<ReorderAlertDto>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedResponse<ReorderAlertDto>>> ReorderAlerts(
-        [FromQuery] int? warehouseId, [FromQuery] PageQuery query, CancellationToken ct)
-        => Ok(await _reorder.GetAlertsAsync(warehouseId, query, ct));
+        [FromQuery] int? warehouseId, [FromQuery] int? branchId, [FromQuery] PageQuery query, CancellationToken ct)
+        => Ok(await _reorder.GetAlertsAsync(warehouseId, branchId, query, ct));
 
     /// <summary>Create a draft requisition for an item's suggested reorder quantity.</summary>
     [HttpPost("reorder-alerts/{itemId:int}/requisition")]

Backend/ERPCore/Controllers/StockCountsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Stock;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Stock-count endpoints (docs/11 §5.6).</summary>
 [Route("api/v1/stock-counts")]
+[Authorize(Policy = NavPolicies.Prefix + "stock")]
 public sealed class StockCountsController : ApiControllerBase
 {
     private readonly ICountService _counts;
@@ -18,8 +21,8 @@ public sealed class StockCountsController : ApiControllerBase
     [HttpGet]
     [ProducesResponseType(typeof(PagedResponse<CountSummaryDto>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedResponse<CountSummaryDto>>> List(
-        [FromQuery] PageQuery query, [FromQuery] CountStatus? status, [FromQuery] int? warehouseId, CancellationToken ct)
-        => Ok(await _counts.ListAsync(query, status, warehouseId, ct));
+        [FromQuery] PageQuery query, [FromQuery] CountStatus? status, [FromQuery] int? warehouseId, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _counts.ListAsync(query, status, warehouseId, branchId, ct));
 
     [HttpGet("{countId:int}")]
     [ProducesResponseType(typeof(CountDto), StatusCodes.Status200OK)]

Backend/ERPCore/Controllers/StockTransfersController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Stock;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Stock-transfer endpoints (docs/11 §5.4).</summary>
 [Route("api/v1/stock-transfers")]
+[Authorize(Policy = NavPolicies.Prefix + "stock")]
 public sealed class StockTransfersController : ApiControllerBase
 {
     private readonly ITransferService _transfers;
@@ -19,8 +22,8 @@ public sealed class StockTransfersController : ApiControllerBase
     [ProducesResponseType(typeof(PagedResponse<TransferSummaryDto>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedResponse<TransferSummaryDto>>> List(
         [FromQuery] PageQuery query, [FromQuery] TransferStatus? status,
-        [FromQuery] int? srcWarehouseId, [FromQuery] int? destWarehouseId, CancellationToken ct)
-        => Ok(await _transfers.ListAsync(query, status, srcWarehouseId, destWarehouseId, ct));
+        [FromQuery] int? srcWarehouseId, [FromQuery] int? destWarehouseId, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _transfers.ListAsync(query, status, srcWarehouseId, destWarehouseId, branchId, ct));
 
     [HttpGet("{transferId:int}")]
     [ProducesResponseType(typeof(TransferDto), StatusCodes.Status200OK)]

Backend/ERPCore/Controllers/SubCategoriesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Categories;
 using ERPCore.Services.Interfaces;
 using Microsoft.AspNetCore.Mvc;
@@ -10,6 +12,7 @@ namespace ERPCore.Controllers;
 /// since a subcategory only exists in the context of one.
 /// </summary>
 [Route("api/v1/subcategories")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
 public sealed class SubCategoriesController : ApiControllerBase
 {
     private readonly ICategoryService _categories;

Backend/ERPCore/Controllers/SupportTicketsController.cs

@@ -0,0 +1,70 @@
+using ERPCore.Dtos.Support;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+[Route("api/v1/support-tickets")]
+public sealed class SupportTicketsController : ApiControllerBase
+{
+    private readonly ISupportTicketService _tickets;
+    private readonly ICurrentUser _currentUser;
+
+    public SupportTicketsController(ISupportTicketService tickets, ICurrentUser currentUser)
+    {
+        _tickets = tickets;
+        _currentUser = currentUser;
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(SupportTicketDto), StatusCodes.Status201Created)]
+    public async Task<ActionResult<SupportTicketDto>> Create([FromBody] CreateSupportTicketRequest request, CancellationToken ct)
+    {
+        var result = await _tickets.CreateAsync(_currentUser.AuditUserId, request, ct);
+        SetETag(result.RowVersion);
+        return CreatedAtAction(nameof(GetById), new { id = result.Value.TicketId }, result.Value);
+    }
+
+    [HttpGet]
+    [ProducesResponseType(typeof(IReadOnlyList<SupportTicketSummaryDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<IReadOnlyList<SupportTicketSummaryDto>>> GetList(CancellationToken ct)
+    {
+        var list = await _tickets.GetListAsync(_currentUser.AuditUserId, _currentUser.IsAdmin, ct);
+        return Ok(list);
+    }
+
+    [HttpGet("{id:int}")]
+    [ProducesResponseType(typeof(SupportTicketDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<SupportTicketDto>> GetById(int id, CancellationToken ct)
+    {
+        var result = await _tickets.GetByIdAsync(id, _currentUser.AuditUserId, _currentUser.IsAdmin, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost("{id:int}/messages")]
+    [ProducesResponseType(typeof(SupportTicketDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<SupportTicketDto>> AddMessage(int id, [FromBody] AddSupportTicketMessageRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _tickets.AddMessageAsync(id, _currentUser.AuditUserId, _currentUser.IsAdmin, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPut("{id:int}/status")]
+    [ProducesResponseType(typeof(SupportTicketDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<SupportTicketDto>> UpdateStatus(int id, [FromBody] UpdateSupportTicketStatusRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _tickets.UpdateStatusAsync(id, _currentUser.AuditUserId, _currentUser.IsAdmin, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+}

Backend/ERPCore/Controllers/TaxRatesController.cs

@@ -0,0 +1,70 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Common;
+using ERPCore.Dtos.TaxRates;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Tax rate master endpoints — see <see cref="Domain.Entities.TaxRate"/>.</summary>
+[Route("api/v1/tax-rates")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
+public sealed class TaxRatesController : ApiControllerBase
+{
+    private readonly ITaxRateService _taxRates;
+
+    public TaxRatesController(ITaxRateService taxRates) => _taxRates = taxRates;
+
+    [HttpGet]
+    [ProducesResponseType(typeof(PagedResponse<TaxRateDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<TaxRateDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _taxRates.ListAsync(query, status, ct));
+
+    [HttpGet("{taxRateId:int}")]
+    [ProducesResponseType(typeof(TaxRateDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<TaxRateDto>> GetById(int taxRateId, CancellationToken ct)
+    {
+        var result = await _taxRates.GetAsync(taxRateId, ct);
+        if (result is null) return NotFound();
+
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    [HttpPost]
+    [ProducesResponseType(typeof(TaxRateDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<TaxRateDto>> Create([FromBody] CreateTaxRateRequest request, CancellationToken ct)
+    {
+        var result = await _taxRates.CreateAsync(request, ct);
+        SetETag(result.RowVersion);
+        return Created($"/api/v1/tax-rates/{result.Value.TaxRateId}", result.Value);
+    }
+
+    [HttpPut("{taxRateId:int}")]
+    [ProducesResponseType(typeof(TaxRateDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status412PreconditionFailed)]
+    public async Task<ActionResult<TaxRateDto>> Update(int taxRateId, [FromBody] UpdateTaxRateRequest request, CancellationToken ct)
+    {
+        var expected = RequireIfMatch();
+        var result = await _taxRates.UpdateAsync(taxRateId, request, expected, ct);
+        SetETag(result.RowVersion);
+        return Ok(result.Value);
+    }
+
+    /// <summary>Deactivate/reactivate. Masters are never hard-deleted (FR-MD-08).</summary>
+    [HttpPatch("{taxRateId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int taxRateId, [FromBody] UpdateTaxRateStatusRequest request, CancellationToken ct)
+    {
+        await _taxRates.SetStatusAsync(taxRateId, request.Status, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Controllers/UomsController.cs

@@ -1,3 +1,6 @@
+using ERPCore.Domain.Enums;
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Uoms;
 using ERPCore.Services.Interfaces;
@@ -7,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Unit-of-measure endpoints (docs/11-BACKEND-PHASE1.md §2.2).</summary>
 [Route("api/v1/uoms")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
 public sealed class UomsController : ApiControllerBase
 {
     private readonly IUomService _uoms;
@@ -15,8 +19,9 @@ public sealed class UomsController : ApiControllerBase
 
     [HttpGet]
     [ProducesResponseType(typeof(PagedResponse<UomDto>), StatusCodes.Status200OK)]
-    public async Task<ActionResult<PagedResponse<UomDto>>> List([FromQuery] PageQuery query, CancellationToken ct)
-        => Ok(await _uoms.ListAsync(query, ct));
+    public async Task<ActionResult<PagedResponse<UomDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _uoms.ListAsync(query, status, ct));
 
     [HttpPost]
     [ProducesResponseType(typeof(UomDto), StatusCodes.Status201Created)]
@@ -26,4 +31,14 @@ public sealed class UomsController : ApiControllerBase
         var dto = await _uoms.CreateAsync(request, ct);
         return Created($"/api/v1/uoms/{dto.UomId}", dto);
     }
+
+    /// <summary>Deactivate/reactivate. Masters are never hard-deleted (FR-MD-08).</summary>
+    [HttpPatch("{uomId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int uomId, [FromBody] UpdateUomStatusRequest request, CancellationToken ct)
+    {
+        await _uoms.SetStatusAsync(uomId, request.Status, ct);
+        return NoContent();
+    }
 }

Backend/ERPCore/Controllers/UsersController.cs

@@ -1,6 +1,13 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Audit;
+using ERPCore.Dtos.Auth;
 using ERPCore.Dtos.Common;
+using ERPCore.Dtos.Hrm;
 using ERPCore.Dtos.Users;
+using ERPCore.Infra.Auth;
 using ERPCore.Services.Interfaces;
+using ERPCore.System.Errors;
 using Microsoft.AspNetCore.Mvc;
 
 namespace ERPCore.Controllers;
@@ -10,16 +17,32 @@ namespace ERPCore.Controllers;
 /// account creation orchestrated against AuthHex (see <see cref="IUserManagementService.CreateAsync"/>).
 /// </summary>
 [Route("api/v1/users")]
+[Authorize(Policy = NavPolicies.Prefix + "settings")]
 public sealed class UsersController : ApiControllerBase
 {
     private readonly IUserManagementService _users;
+    private readonly IEmployeeUserLinkService _links;
+    private readonly IAuditService _audit;
+    private readonly ICurrentUser _currentUser;
 
-    public UsersController(IUserManagementService users) => _users = users;
+    public UsersController(IUserManagementService users, IEmployeeUserLinkService links, IAuditService audit, ICurrentUser currentUser)
+    {
+        _users = users;
+        _links = links;
+        _audit = audit;
+        _currentUser = currentUser;
+    }
+
+    /// <summary>Advisory forward-direction lookup: does a Staff record already exist with this email? (docs/12-BACKEND-HRM.md A.5)</summary>
+    [HttpGet("email-lookup")]
+    [ProducesResponseType(typeof(EmployeeMatchResponse), StatusCodes.Status200OK)]
+    public async Task<ActionResult<EmployeeMatchResponse>> EmailLookup([FromQuery] string email, CancellationToken ct)
+        => Ok(new EmployeeMatchResponse(await _links.FindStaffCandidateByEmailAsync(email, ct)));
 
     [HttpGet]
     [ProducesResponseType(typeof(PagedResponse<ManagedUserDto>), StatusCodes.Status200OK)]
-    public async Task<ActionResult<PagedResponse<ManagedUserDto>>> List([FromQuery] PageQuery query, CancellationToken ct)
-        => Ok(await _users.ListAsync(query, ct));
+    public async Task<ActionResult<PagedResponse<ManagedUserDto>>> List([FromQuery] PageQuery query, [FromQuery] EntityStatus? status, [FromQuery] string? roleCode, CancellationToken ct)
+        => Ok(await _users.ListAsync(query, status, roleCode, ct));
 
     /// <summary>AuthHex UserType options for the create-user form's select.</summary>
     [HttpGet("user-types")]
@@ -41,7 +64,7 @@ public sealed class UsersController : ApiControllerBase
     [ProducesResponseType(StatusCodes.Status409Conflict)]
     public async Task<ActionResult<ManagedUserDto>> Create([FromBody] CreateUserRequest request, CancellationToken ct)
     {
-        var result = await _users.CreateAsync(request, ct);
+        var result = await _users.CreateAsync(request, _currentUser.AuditUserId, ct);
         return Created($"/api/v1/users/{result.UserId}", result);
     }
 
@@ -50,4 +73,34 @@ public sealed class UsersController : ApiControllerBase
     [ProducesResponseType(StatusCodes.Status404NotFound)]
     public async Task<ActionResult<ManagedUserDto>> UpdateRole(int userId, [FromBody] UpdateUserRoleRequest request, CancellationToken ct)
         => Ok(await _users.UpdateRoleAsync(userId, request, ct));
+
+    /// <summary>Revokes/restores standing inside ERPCore only — see <see cref="IUserManagementService.SetStatusAsync"/>.</summary>
+    [HttpPatch("{userId:int}/status")]
+    [ProducesResponseType(typeof(ManagedUserDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<ManagedUserDto>> UpdateStatus(int userId, [FromBody] UpdateUserStatusRequest request, CancellationToken ct)
+        => Ok(await _users.SetStatusAsync(userId, request.Status, ct));
+
+    /// <summary>Device/login history ERPCore captures itself — not AuthHex's "currently active sessions"
+    /// (which only ever reports the caller's own). See <see cref="IAuditService.ListLoginDevicesAsync"/>.</summary>
+    [HttpGet("{userId:int}/login-devices")]
+    [ProducesResponseType(typeof(PagedResponse<LoginActivityDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<PagedResponse<LoginActivityDto>>> ListLoginDevices(int userId, [FromQuery] PageQuery query, CancellationToken ct)
+        => Ok(await _audit.ListLoginDevicesAsync(userId, query, ct));
+
+    /// <summary>
+    /// Admin-only escape hatch: permanently deletes a stale AuthHex identity (by email/mobile/NIC/
+    /// username) that is blocking new registrations. Does not touch ERPCore's own `users` table.
+    /// See <see cref="IUserManagementService.PurgeAuthHexIdentityAsync"/>.
+    /// </summary>
+    [HttpPost("purge-authhex-identity")]
+    [ProducesResponseType(typeof(DeleteAuthHexUserResult), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    public async Task<ActionResult<DeleteAuthHexUserResult>> PurgeAuthHexIdentity([FromBody] PurgeAuthHexIdentityRequest request, CancellationToken ct)
+    {
+        if (!_currentUser.IsAdmin)
+            throw new DomainException("FORBIDDEN", "Only an administrator can purge an AuthHex identity.", 403);
+
+        return Ok(await _users.PurgeAuthHexIdentityAsync(request, ct));
+    }
 }

Backend/ERPCore/Controllers/VendorsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Vendors;
@@ -8,6 +10,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Vendor master endpoints (docs/11-BACKEND-PHASE1.md §2.4).</summary>
 [Route("api/v1/vendors")]
+[Authorize(Policy = NavPolicies.Prefix + "vendors")]
 public sealed class VendorsController : ApiControllerBase
 {
     private readonly IVendorService _vendors;

Backend/ERPCore/Controllers/WarehousesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Warehouses;
 using ERPCore.Services.Interfaces;
@@ -7,6 +9,7 @@ namespace ERPCore.Controllers;
 
 /// <summary>Warehouse &amp; bin endpoints (docs/11-BACKEND-PHASE1.md §2.5).</summary>
 [Route("api/v1/warehouses")]
+[Authorize(Policy = NavPolicies.Prefix + "warehouses")]
 public sealed class WarehousesController : ApiControllerBase
 {
     private readonly IWarehouseService _warehouses;
@@ -15,8 +18,9 @@ public sealed class WarehousesController : ApiControllerBase
 
     [HttpGet]
     [ProducesResponseType(typeof(PagedResponse<WarehouseDto>), StatusCodes.Status200OK)]
-    public async Task<ActionResult<PagedResponse<WarehouseDto>>> List([FromQuery] PageQuery query, CancellationToken ct)
-        => Ok(await _warehouses.ListAsync(query, ct));
+    public async Task<ActionResult<PagedResponse<WarehouseDto>>> List(
+        [FromQuery] PageQuery query, [FromQuery] int? branchId, CancellationToken ct)
+        => Ok(await _warehouses.ListAsync(query, branchId, ct));
 
     [HttpGet("{warehouseId:int}")]
     [ProducesResponseType(typeof(WarehouseDto), StatusCodes.Status200OK)]
@@ -36,6 +40,24 @@ public sealed class WarehousesController : ApiControllerBase
         return Created($"/api/v1/warehouses/{dto.WarehouseId}", dto);
     }
 
+    [HttpPut("{warehouseId:int}")]
+    [ProducesResponseType(typeof(WarehouseDto), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<ActionResult<WarehouseDto>> Update(int warehouseId, [FromBody] UpdateWarehouseRequest request, CancellationToken ct)
+        => Ok(await _warehouses.UpdateAsync(warehouseId, request, ct));
+
+    [HttpDelete("{warehouseId:int}")]
+    [Authorize(Policy = NavPolicies.Prefix + "warehouses" + NavPolicies.ActionSeparator + NavPolicies.DeleteAction)]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    public async Task<IActionResult> Delete(int warehouseId, CancellationToken ct)
+    {
+        await _warehouses.DeleteAsync(warehouseId, ct);
+        return NoContent();
+    }
+
     [HttpGet("{warehouseId:int}/bins")]
     [ProducesResponseType(typeof(IReadOnlyList<BinDto>), StatusCodes.Status200OK)]
     [ProducesResponseType(StatusCodes.Status404NotFound)]

Backend/ERPCore/Controllers/WarrantyPeriodsController.cs

@@ -0,0 +1,44 @@
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Items;
+using ERPCore.Infra.Auth;
+using ERPCore.Services.Interfaces;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ERPCore.Controllers;
+
+/// <summary>Custom warranty period master — managed under Products like Item Variants.</summary>
+[Route("api/v1/warranty-periods")]
+[Authorize(Policy = NavPolicies.Prefix + "products")]
+public sealed class WarrantyPeriodsController : ApiControllerBase
+{
+    private readonly IWarrantyPeriodService _periods;
+
+    public WarrantyPeriodsController(IWarrantyPeriodService periods) => _periods = periods;
+
+    /// <summary>Custom periods only (defaults are fixed); filter <c>status=Active</c> for selectable rows.</summary>
+    [HttpGet]
+    [ProducesResponseType(typeof(List<WarrantyPeriodDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<WarrantyPeriodDto>>> List([FromQuery] EntityStatus? status, CancellationToken ct)
+        => Ok(await _periods.ListAsync(status, ct));
+
+    [HttpPost]
+    [ProducesResponseType(typeof(WarrantyPeriodDto), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status422UnprocessableEntity)]
+    public async Task<ActionResult<WarrantyPeriodDto>> Create([FromBody] CreateWarrantyPeriodRequest request, CancellationToken ct)
+    {
+        var result = await _periods.CreateAsync(request.Months!.Value, ct);
+        return Created($"/api/v1/warranty-periods/{result.WarrantyPeriodId}", result);
+    }
+
+    /// <summary>Deactivate/reactivate. Never hard-deleted (FR-MD-08).</summary>
+    [HttpPatch("{warrantyPeriodId:int}/status")]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> SetStatus(int warrantyPeriodId, [FromBody] UpdateWarrantyPeriodStatusRequest request, CancellationToken ct)
+    {
+        await _periods.SetStatusAsync(warrantyPeriodId, request.Status, ct);
+        return NoContent();
+    }
+}

Backend/ERPCore/Domain/DocumentTypes.cs

@@ -10,8 +10,20 @@ public static class DocumentTypes
     public const string Rfq = "RFQ";
     public const string PurchaseOrder = "PO";
     public const string Grn = "GRN";
+    public const string PurchaseInvoice = "PINV";
     public const string Transfer = "TRF";
     public const string Adjustment = "ADJ";
     public const string Count = "CNT";
     public const string PurchaseReturn = "PRET";
+
+    /// <summary>Production run (docs/30 FR-MFG-08) — <c>PRD-2026-00001</c>.</summary>
+    public const string Production = "PRD";
+    public const string SalesInvoice = "SI";
+    public const string SalesSlip = "SSL";
+    public const string BundleSale = "BND";
+    public const string BundleSaleTemplate = "TPL";
+    public const string SalesReturn = "SRET";
+
+    /// <summary>Cashier day-end close-out (Sales) — <c>DEND-2026-00001</c>.</summary>
+    public const string SalesDayEnd = "DEND";
 }

Backend/ERPCore/Domain/Entities/AttendanceRecord.cs

@@ -0,0 +1,40 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Per employee/day attendance row (FR-HR-ATT). <see cref="WorkShiftId"/> is
+/// snapshotted from the employee's shift at ingestion time (docs/12-BACKEND-HRM.md
+/// A.3) so a later shift reassignment never retroactively changes historical
+/// Late/OT figures. Model: docs/12-BACKEND-HRM.md Part C.4.
+/// </summary>
+public class AttendanceRecord
+{
+    public int AttendanceRecordId { get; set; }
+    public int? AttendanceUploadBatchId { get; set; }
+    public AttendanceUploadBatch? AttendanceUploadBatch { get; set; }
+    public int EmployeeId { get; set; }
+    public Employee? Employee { get; set; }
+
+    public DateTime AttendanceDate { get; set; }
+    public TimeSpan? CheckIn { get; set; }
+    public TimeSpan? CheckOut { get; set; }
+    public int WorkShiftId { get; set; }
+    public WorkShift? WorkShift { get; set; }
+
+    public int WorkingMinutes { get; set; }
+    public int LateMinutes { get; set; }
+    public int EarlyLeaveMinutes { get; set; }
+    public int OvertimeMinutes { get; set; }
+
+    public AttendanceStatus AttendanceStatus { get; set; }
+    public RowValidationStatus RowValidationStatus { get; set; } = RowValidationStatus.Valid;
+    public int? DuplicateOfAttendanceRecordId { get; set; }
+
+    public string? Notes { get; set; }
+    public bool IsManualOverride { get; set; }
+    public int? EditedBy { get; set; }
+    public DateTime? EditedAt { get; set; }
+
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/AttendanceUploadBatch.cs

@@ -0,0 +1,31 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Attendance upload batch (FR-HR-ATT) — the transactional document driving the
+/// exact status flow Draft→Validated→Confirmed→UsedInPayroll. Scoped to exactly
+/// one payroll period, numbered via <see cref="NumberSequence"/> (docType "ATT").
+/// Model: docs/12-BACKEND-HRM.md Part C.4.
+/// </summary>
+public class AttendanceUploadBatch
+{
+    public int AttendanceUploadBatchId { get; set; }
+    public string DocNo { get; set; } = string.Empty;
+    public DateTime PeriodStart { get; set; }
+    public DateTime PeriodEnd { get; set; }
+    public AttendanceSourceType SourceType { get; set; }
+    public string? OriginalFileName { get; set; }
+
+    public int UploadedBy { get; set; }
+    public DateTime UploadedAt { get; set; }
+    public AttendanceBatchStatus Status { get; set; } = AttendanceBatchStatus.Draft;
+    public int? ConfirmedBy { get; set; }
+    public DateTime? ConfirmedAt { get; set; }
+
+    public int RowCountTotal { get; set; }
+    public int RowCountDuplicate { get; set; }
+    public int RowCountError { get; set; }
+
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/Batch.cs

@@ -13,4 +13,7 @@ public class Batch
 
     public string BatchNo { get; set; } = string.Empty;
     public DateOnly? ExpiryDate { get; set; }
+
+    /// <summary>Optional scan code for barcode/RFID lookup (unique when set).</summary>
+    public string? Barcode { get; set; }
 }

Backend/ERPCore/Domain/Entities/Branch.cs

@@ -0,0 +1,26 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Branch/location master (FR-HR-MD-01) — multi-branch readiness. Required by
+/// <see cref="Employee.BranchId"/>, optionally referenced by <see cref="PayrollRun.BranchId"/>.
+/// Deactivated, not deleted, when referenced. Model: docs/12-BACKEND-HRM.md Part C.1.
+/// </summary>
+public class Branch
+{
+    public int BranchId { get; set; }
+
+    /// <summary>Server-generated on create ("BR-001", "BR-002", ...) — never accepted from the client.</summary>
+    public string Code { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public string? Address { get; set; }
+    public string? PhoneNumber { get; set; }
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+
+    /// <summary>PostgreSQL xmin-backed optimistic concurrency token (ETag source).</summary>
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/BranchConfig.cs

@@ -0,0 +1,33 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Branch configuration — a singleton row (single-tenant, docs/00-CORE §1) gating whether
+/// this deployment uses branches at all. When <see cref="BranchingEnabled"/> is off, the
+/// Employee/Warehouse create forms stop asking for a branch and every new record is
+/// silently assigned to the deployment's one default branch instead — schema-wise
+/// <c>Employee.BranchId</c>/<c>Warehouse.BranchId</c> stay <c>NOT NULL</c> either way, only
+/// the UI/UX requirement toggles. See <see cref="Services.BranchConfigService.ResolveBranchIdAsync"/>.
+/// </summary>
+public class BranchConfig
+{
+    /// <summary>Always 1 - the singleton row's id.</summary>
+    public const int SingletonId = 1;
+
+    public int ConfigId { get; set; }
+
+    public bool BranchingEnabled { get; set; } = true;
+
+    /// <summary>Independent sub-toggle: when the global <see cref="BranchingEnabled"/> is on
+    /// but this is off, Warehouses stop asking for/showing a branch while Employees etc.
+    /// still do. Meaningless when <see cref="BranchingEnabled"/> is off (everything is
+    /// single-branch already).</summary>
+    public bool WarehouseBranchingEnabled { get; set; } = true;
+
+    public DateTime? UpdatedAt { get; set; }
+
+    public int? UpdatedBy { get; set; }
+    public User? UpdatedByUser { get; set; }
+
+    /// <summary>PostgreSQL xmin-backed optimistic concurrency token (ETag source).</summary>
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/BundleSale.cs

@@ -0,0 +1,39 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+public class BundleSale
+{
+    public int BundleSaleId { get; set; }
+    public string BundleNo { get; set; } = string.Empty;
+    public DateTime BundleDate { get; set; }
+    public int CustomerId { get; set; }
+    public Customer? Customer { get; set; }
+    public string CustomerSnapshotName { get; set; } = string.Empty;
+    public int WarehouseId { get; set; }
+    public Warehouse? Warehouse { get; set; }
+    public int CashierUserId { get; set; }
+    public User? CashierUser { get; set; }
+    public int BundleSaleTemplateId { get; set; }
+    public BundleSaleTemplate? BundleSaleTemplate { get; set; }
+    public string BundleName { get; set; } = string.Empty;
+    public string BundleCode { get; set; } = string.Empty;
+    public BundleSaleStatus Status { get; set; } = BundleSaleStatus.Draft;
+    public decimal ComponentSubtotal { get; set; }
+    public decimal BundlePrice { get; set; }
+    public decimal MarginAmount { get; set; }
+    public decimal DiscountTotal { get; set; }
+    public decimal TaxTotal { get; set; }
+    public decimal GrandTotal { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public int ConcurrencyStamp { get; set; }
+
+    /// <summary>Set once this bundle's business date is closed by <see cref="SalesDayEnd"/> — a
+    /// closed bundle sale is frozen (no further edits). Same role as <see cref="SalesSlip.DayEndId"/>;
+    /// a bundle sale is a cashier document exactly like a sales slip, just priced as a set.</summary>
+    public int? DayEndId { get; set; }
+    public SalesDayEnd? DayEnd { get; set; }
+
+    public ICollection<BundleSaleLine> Lines { get; set; } = new List<BundleSaleLine>();
+}

Backend/ERPCore/Domain/Entities/BundleSaleLine.cs

@@ -0,0 +1,22 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+public class BundleSaleLine
+{
+    public int BundleSaleLineId { get; set; }
+    public int BundleSaleId { get; set; }
+    public BundleSale? BundleSale { get; set; }
+
+    public int ItemId { get; set; }
+    public Item? Item { get; set; }
+    public string Description { get; set; } = string.Empty;
+    public decimal Qty { get; set; }
+    public int WarehouseId { get; set; }
+    public Warehouse? Warehouse { get; set; }
+    public decimal UnitPrice { get; set; }
+    public decimal LineTotal { get; set; }
+    public bool IncludeInBundle { get; set; } = true;
+    public bool IsComponent { get; set; } = true;
+    public int? ParentLineId { get; set; }
+}

Backend/ERPCore/Domain/Entities/BundleSaleTemplate.cs

@@ -0,0 +1,17 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+public class BundleSaleTemplate
+{
+    public int BundleSaleTemplateId { get; set; }
+    public string TemplateCode { get; set; } = string.Empty;
+    public string TemplateName { get; set; } = string.Empty;
+    public string? Description { get; set; }
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public int ConcurrencyStamp { get; set; }
+
+    public ICollection<BundleSaleTemplateLine> Lines { get; set; } = new List<BundleSaleTemplateLine>();
+}

Backend/ERPCore/Domain/Entities/BundleSaleTemplateLine.cs

@@ -0,0 +1,18 @@
+namespace ERPCore.Domain.Entities;
+
+public class BundleSaleTemplateLine
+{
+    public int BundleSaleTemplateLineId { get; set; }
+    public int BundleSaleTemplateId { get; set; }
+    public BundleSaleTemplate? BundleSaleTemplate { get; set; }
+
+    public int ItemId { get; set; }
+    public Item? Item { get; set; }
+    public int WarehouseId { get; set; }
+    public Warehouse? Warehouse { get; set; }
+
+    public decimal Qty { get; set; }
+    public decimal UnitPrice { get; set; }
+    public bool IncludeInBundle { get; set; } = true;
+    public int SortOrder { get; set; }
+}

Backend/ERPCore/Domain/Entities/Customer.cs

@@ -0,0 +1,41 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Customer master for both B2B and B2C sales.
+/// Phase 1 keeps this lean: identity, contact, tax, credit, and default warehouse.
+/// </summary>
+public class Customer
+{
+    public int CustomerId { get; set; }
+    public string CustomerCode { get; set; } = string.Empty;
+    public CustomerType CustomerType { get; set; } = CustomerType.B2C;
+
+    public string Name { get; set; } = string.Empty;
+    public string? DisplayName { get; set; }
+    public string? Phone { get; set; }
+    public string? Email { get; set; }
+
+    public string? AddressLine1 { get; set; }
+    public string? AddressLine2 { get; set; }
+    public string? City { get; set; }
+    public string? Country { get; set; }
+
+    public string? TaxRegistrationNo { get; set; }
+    public decimal CreditLimit { get; set; }
+    public int CreditDays { get; set; }
+
+    public int? DefaultWarehouseId { get; set; }
+    public Warehouse? DefaultWarehouse { get; set; }
+
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
+
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+
+    /// <summary>PostgreSQL xmin-backed optimistic concurrency token (ETag source).</summary>
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/Department.cs

@@ -0,0 +1,26 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Department master (FR-HR-MD-01) — unlimited self-nesting for a real org chart
+/// (unlike the two-level-capped <see cref="Category"/>); cycle prevention is a
+/// service-level check on write, not a DB constraint. Model: docs/12-BACKEND-HRM.md Part C.1.
+/// </summary>
+public class Department
+{
+    public int DepartmentId { get; set; }
+    public string Code { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public int? ParentDepartmentId { get; set; }
+    public Department? ParentDepartment { get; set; }
+    public int? HeadEmployeeId { get; set; }
+    public Employee? HeadEmployee { get; set; }
+    public int? BranchId { get; set; }
+    public Branch? Branch { get; set; }
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/Designation.cs

@@ -0,0 +1,19 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Job title master (FR-HR-MD-01), standalone — not FK'd to Department, since a
+/// title like "Accountant" can exist in multiple departments. Model: docs/12-BACKEND-HRM.md Part C.1.
+/// </summary>
+public class Designation
+{
+    public int DesignationId { get; set; }
+    public string Code { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/Employee.cs

@@ -0,0 +1,78 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Staff record (FR-HR-MD-02) — distinct from <see cref="User"/> (the system login
+/// account): not every employee has a login, and not every login belongs to an
+/// employee. <see cref="UserId"/> is the optional, explicit, human-confirmed link
+/// between the two (docs/12-BACKEND-HRM.md A.5/C.2, Part B.3.2). Normal separation is
+/// recorded via <see cref="Status"/> + <see cref="LastWorkingDate"/> rather than deletion;
+/// an explicit hard delete is also available (<see cref="Services.Interfaces.IEmployeeService.DeleteAsync"/>)
+/// and cascades to every dependent HR record, blocked only if payroll history exists.
+/// <see cref="EmployeeCode"/> is user-entered (not <see cref="NumberSequence"/>-issued):
+/// HR departments keep their own legacy numbering scheme, and NumberSequence's
+/// year-scoping is the wrong shape for an identifier that must never look "reset".
+/// </summary>
+public class Employee
+{
+    public int EmployeeId { get; set; }
+    public string EmployeeCode { get; set; } = string.Empty;
+
+    // Identity
+    public string FullName { get; set; } = string.Empty;
+    public string? Nic { get; set; }
+    public DateTime? DateOfBirth { get; set; }
+    public Gender? Gender { get; set; }
+    public string? Nationality { get; set; }
+    public string? ProfilePhotoPath { get; set; }
+
+    // Contact
+    /// <summary>The field used for the bidirectional Employee&lt;-&gt;User email cross-check.</summary>
+    public string? Email { get; set; }
+    public string? PersonalMobile { get; set; }
+    public string? AddressLine1 { get; set; }
+    public string? AddressLine2 { get; set; }
+    public string? City { get; set; }
+    public string? PostalCode { get; set; }
+    public string? Country { get; set; }
+
+    // Emergency contact
+    public string? EmergencyContactName { get; set; }
+    public string? EmergencyContactRelationship { get; set; }
+    public string? EmergencyContactPhone { get; set; }
+
+    // Employment
+    public DateTime HireDate { get; set; }
+    public DateTime? ConfirmationDate { get; set; }
+    public DateTime? LastWorkingDate { get; set; }
+    public int DepartmentId { get; set; }
+    public Department? Department { get; set; }
+    public int DesignationId { get; set; }
+    public Designation? Designation { get; set; }
+    public int EmploymentTypeId { get; set; }
+    public EmploymentType? EmploymentType { get; set; }
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
+    public int WorkShiftId { get; set; }
+    public WorkShift? WorkShift { get; set; }
+    public int? ReportingManagerId { get; set; }
+    public Employee? ReportingManager { get; set; }
+
+    // Statutory (Sri Lanka)
+    public string? EpfNumber { get; set; }
+    public string? EtfNumber { get; set; }
+    public string? TaxIdentificationNumber { get; set; }
+
+    /// <summary>Optional login account link (unique — one User backs at most one Employee).</summary>
+    public int? UserId { get; set; }
+    public User? User { get; set; }
+
+    public EmployeeStatus Status { get; set; } = EmployeeStatus.Active;
+
+    public int CreatedBy { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public int? UpdatedBy { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/EmployeeBankDetail.cs

@@ -0,0 +1,28 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Employee bank account (FR-HR-MD-03), one-to-many — a future split-payment
+/// improvement is possible since this isn't a 1:1 scalar set. Exactly one row per
+/// employee is <see cref="IsPrimary"/>; payroll disbursement targets it.
+/// Model: docs/12-BACKEND-HRM.md Part C.2.
+/// </summary>
+public class EmployeeBankDetail
+{
+    public int EmployeeBankDetailId { get; set; }
+    public int EmployeeId { get; set; }
+    public Employee? Employee { get; set; }
+
+    public string BankName { get; set; } = string.Empty;
+    public string BranchName { get; set; } = string.Empty;
+    public string AccountNumber { get; set; } = string.Empty;
+    public string AccountHolderName { get; set; } = string.Empty;
+    public string? SwiftCode { get; set; }
+    public bool IsPrimary { get; set; }
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/EmployeeDocument.cs

@@ -0,0 +1,36 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Uploaded staff document (FR-HR-DOC-02..04) — the user's "Doc". <see cref="StoredFileName"/>/
+/// <see cref="RelativePath"/> are server-generated (never the client's filename), so the
+/// file is only ever reachable through <see cref="Services.Interfaces.IFileStorageService"/>,
+/// never a guessable static path. Archived, not deleted, so the audit trail of what was
+/// once on file is retained. Model: docs/12-BACKEND-HRM.md Part C.3.
+/// </summary>
+public class EmployeeDocument
+{
+    public int EmployeeDocumentId { get; set; }
+    public int EmployeeId { get; set; }
+    public Employee? Employee { get; set; }
+    public int HrDocumentTypeId { get; set; }
+    public HrDocumentType? HrDocumentType { get; set; }
+
+    public string OriginalFileName { get; set; } = string.Empty;
+    public string StoredFileName { get; set; } = string.Empty;
+    public string RelativePath { get; set; } = string.Empty;
+    public string ContentType { get; set; } = string.Empty;
+    public long SizeBytes { get; set; }
+    public DateTime? IssueDate { get; set; }
+    public DateTime? ExpiryDate { get; set; }
+    public string? Notes { get; set; }
+
+    public int UploadedBy { get; set; }
+    public DateTime UploadedAt { get; set; }
+    public int? VerifiedBy { get; set; }
+    public DateTime? VerifiedAt { get; set; }
+
+    public EmployeeDocumentStatus Status { get; set; } = EmployeeDocumentStatus.Active;
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/EmployeeLoan.cs

@@ -0,0 +1,35 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Loan/Advance (FR-HR-PAY-03) — <see cref="LoanKind"/> discriminates, structurally
+/// identical otherwise. <see cref="OutstandingBalance"/> is denormalized (parallel to
+/// <c>StockLayer.QtyRemaining</c>). Numbered via <see cref="NumberSequence"/> (docType "LOAN").
+/// Model: docs/12-BACKEND-HRM.md Part C.6.
+/// </summary>
+public class EmployeeLoan
+{
+    public int EmployeeLoanId { get; set; }
+    public string DocNo { get; set; } = string.Empty;
+    public int EmployeeId { get; set; }
+    public Employee? Employee { get; set; }
+    public LoanKind LoanKind { get; set; }
+
+    public decimal PrincipalAmount { get; set; }
+    public decimal InterestRate { get; set; }
+    public decimal InstallmentAmount { get; set; }
+    public int NumberOfInstallments { get; set; }
+    public int StartYear { get; set; }
+    public int StartMonth { get; set; }
+    public decimal OutstandingBalance { get; set; }
+    public LoanStatus Status { get; set; } = LoanStatus.Active;
+
+    public int ApprovedBy { get; set; }
+    public DateTime ApprovedAt { get; set; }
+    public int CreatedBy { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public uint RowVersion { get; set; }
+
+    public List<LoanInstallment> Installments { get; set; } = new();
+}

Backend/ERPCore/Domain/Entities/EmployeeSalaryStructure.cs

@@ -0,0 +1,30 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Effective-dated salary structure header (FR-HR-PAY-02) — the audit trail a
+/// salary revision needs (docs/12-BACKEND-HRM.md §13): exactly one row with
+/// <see cref="EffectiveTo"/> null (the current one) per employee at a time.
+/// Model: docs/12-BACKEND-HRM.md Part C.6.
+/// </summary>
+public class EmployeeSalaryStructure
+{
+    public int EmployeeSalaryStructureId { get; set; }
+    public int EmployeeId { get; set; }
+    public Employee? Employee { get; set; }
+
+    public DateTime EffectiveFrom { get; set; }
+    public DateTime? EffectiveTo { get; set; }
+    public decimal BasicSalary { get; set; }
+    public string Currency { get; set; } = "LKR";
+    public SalaryStructureStatus Status { get; set; } = SalaryStructureStatus.Active;
+
+    public int ApprovedBy { get; set; }
+    public DateTime ApprovedAt { get; set; }
+    public int CreatedBy { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public uint RowVersion { get; set; }
+
+    public List<EmployeeSalaryStructureLine> Lines { get; set; } = new();
+}

Backend/ERPCore/Domain/Entities/EmployeeSalaryStructureLine.cs

@@ -0,0 +1,12 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>Allowance/other-deduction line on a salary structure. Model: docs/12-BACKEND-HRM.md Part C.6.</summary>
+public class EmployeeSalaryStructureLine
+{
+    public int EmployeeSalaryStructureLineId { get; set; }
+    public int EmployeeSalaryStructureId { get; set; }
+    public EmployeeSalaryStructure? EmployeeSalaryStructure { get; set; }
+    public int SalaryComponentId { get; set; }
+    public SalaryComponent? SalaryComponent { get; set; }
+    public decimal Amount { get; set; }
+}

Backend/ERPCore/Domain/Entities/EmploymentType.cs

@@ -0,0 +1,20 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Labor category master (FR-HR-MD-01) — a master, not an enum, mirroring
+/// <see cref="Brand"/>: employment categories change with company/labor-law
+/// policy without wanting a code deploy. Model: docs/12-BACKEND-HRM.md Part C.1.
+/// </summary>
+public class EmploymentType
+{
+    public int EmploymentTypeId { get; set; }
+    public string Code { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/Grn.cs

@@ -22,6 +22,11 @@ public class Grn
     public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
+    /// <summary>Owning branch, set explicitly at creation — warehouses are shared across
+    /// branches, so branch scope can no longer be derived from <see cref="Warehouse"/>.</summary>
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
+
     public GrnStatus Status { get; set; } = GrnStatus.Draft;
 
     public int CreatedBy { get; set; }
@@ -30,6 +35,16 @@ public class Grn
     public DateTime CreatedAt { get; set; }
     public DateTime? PostedAt { get; set; }
 
+    /// <summary>Journal number of the real GL journal entry posted for this GRN's receipt (set on confirm).</summary>
+    public string? GlJournalNo { get; set; }
+    public DateTime? GlPostedAt { get; set; }
+
+    /// <summary>The Purchase Invoice this GRN has been consolidated into, if any (null until
+    /// invoiced). Vendor settlement is tracked on the invoice, not per-GRN — see
+    /// <see cref="PurchaseInvoice"/>.</summary>
+    public int? PurchaseInvoiceId { get; set; }
+    public PurchaseInvoice? PurchaseInvoice { get; set; }
+
     /// <summary>PostgreSQL xmin-backed optimistic concurrency token.</summary>
     public uint RowVersion { get; set; }
 

Backend/ERPCore/Domain/Entities/GrnConfig.cs

@@ -0,0 +1,41 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// GRN (goods receipt) configuration — a singleton row, same shape as <see cref="SalesConfig"/>.
+/// Controls which warehouse goods are received into.
+/// </summary>
+public class GrnConfig
+{
+    /// <summary>Always 1 - the singleton row's id.</summary>
+    public const int SingletonId = 1;
+
+    public int ConfigId { get; set; }
+
+    /// <summary>When on (default) and no <see cref="DefaultWarehouseId"/> is saved, New GRN shows
+    /// a Warehouse picker. When off, a default must be saved.</summary>
+    public bool AllowWarehouseSelection { get; set; } = true;
+
+    /// <summary>Default receiving warehouse. Whenever set, New GRN shows only this warehouse (locked)
+    /// and every GRN is forced onto it server-side (see GrnConfigService.GetForcedWarehouseIdAsync).
+    /// Required while <see cref="AllowWarehouseSelection"/> is off; clearing it brings the picker back.</summary>
+    public int? DefaultWarehouseId { get; set; }
+    public Warehouse? DefaultWarehouse { get; set; }
+
+    /// <summary>When on (default), GRN lines may carry a discount % (the New GRN "Disc %" column and
+    /// header rate); when off, they are hidden and a discount above zero is rejected server-side
+    /// (see GrnService.CreateAsync).</summary>
+    public bool AllowDiscounts { get; set; } = true;
+
+    /// <summary>When on (default), GRN lines carry VAT (entered, or the item's tax rate when left
+    /// empty); when off, the VAT columns are hidden, every line is received at 0% VAT, and a VAT
+    /// above zero is rejected server-side (see GrnService.CreateAsync).</summary>
+    public bool AllowVat { get; set; } = true;
+
+    public DateTime? UpdatedAt { get; set; }
+
+    public int? UpdatedBy { get; set; }
+    public User? UpdatedByUser { get; set; }
+
+    /// <summary>PostgreSQL xmin-backed optimistic concurrency token (ETag source).</summary>
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/GrnLine.cs

@@ -3,9 +3,13 @@ using ERPCore.Domain.Enums;
 namespace ERPCore.Domain.Entities;
 
 /// <summary>
-/// GRN line (FR-GRN-04..08). <see cref="UnitCost"/> is the PO-derived cost for
-/// PO-based receipts (client cost ignored — 02-SECURITY C.3) or the entered cost
-/// for direct receipts. <see cref="ReceivedValue"/> = qty × unitCost.
+/// GRN line (FR-GRN-04..08). <see cref="UnitCost"/> is the gross cost received at:
+/// entered on the line, defaulting to the PO price when omitted (a per-receipt price
+/// override is now permitted — see docs/02-SECURITY C.3, revised). <see cref="PoUnitPrice"/>
+/// snapshots the PO price at receipt so the variance survives later PO edits.
+/// <see cref="NetUnitCost"/> = unitCost after trade discount — this is what the FIFO layer
+/// costs at (VAT never enters stock value; it is recoverable input tax).
+/// <see cref="ReceivedValue"/> = qty × netUnitCost (after discount, before VAT).
 /// <see cref="HoldStatus"/> gates issuability. Model: docs/10 Part C.3.
 /// </summary>
 public class GrnLine
@@ -21,9 +25,6 @@ public class GrnLine
     public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public int UomId { get; set; }
-    public Uom? Uom { get; set; }
-
     public int? BinId { get; set; }
     public Bin? Bin { get; set; }
 
@@ -31,7 +32,37 @@ public class GrnLine
     public Batch? Batch { get; set; }
 
     public decimal Qty { get; set; }
+
+    /// <summary>Gross unit cost received at (entered, or PO price when omitted).</summary>
     public decimal UnitCost { get; set; }
+
+    /// <summary>Snapshot of the PO line price at receipt; null for direct receipts.</summary>
+    public decimal? PoUnitPrice { get; set; }
+
+    /// <summary>Trade discount percentage (0–100), entered.</summary>
+    public decimal DiscountPct { get; set; }
+
+    /// <summary>UnitCost × (1 − DiscountPct/100) — the inventory (FIFO layer) cost.</summary>
+    public decimal NetUnitCost { get; set; }
+
+    /// <summary>VAT percentage (0–100), entered. Recoverable — does not affect stock value.</summary>
+    public decimal VatPct { get; set; }
+
+    /// <summary>Qty × NetUnitCost × VatPct/100.</summary>
+    public decimal VatAmount { get; set; }
+
+    /// <summary>Qty × NetUnitCost (after discount, before VAT).</summary>
     public decimal ReceivedValue { get; set; }
+
+    /// <summary>Qty × NetUnitCost + VatAmount — payable to the vendor.</summary>
+    public decimal LineTotal { get; set; }
+
     public HoldStatus HoldStatus { get; set; } = HoldStatus.Available;
+
+    /// <summary>
+    /// One row per received unit when <see cref="Item.Warranty"/> is
+    /// <see cref="Enums.Warranty.Warranty"/> — count must equal <see cref="Qty"/>.
+    /// Empty for a non-warranty item.
+    /// </summary>
+    public ICollection<GrnLineWarrantyNumber> WarrantyNumbers { get; set; } = new List<GrnLineWarrantyNumber>();
 }

Backend/ERPCore/Domain/Entities/GrnLineWarrantyNumber.cs

@@ -0,0 +1,20 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// One warranty number captured against a single received unit of a warranty-tracked
+/// item (<see cref="Item.Warranty"/> = <see cref="Enums.Warranty.Warranty"/>). A GRN line
+/// for such an item must carry exactly <see cref="GrnLine.Qty"/> of these — one per unit —
+/// mirroring how a Serial-tracked item requires one serial per unit (docs/10 Part C.3).
+/// </summary>
+public class GrnLineWarrantyNumber
+{
+    public int GrnLineWarrantyNumberId { get; set; }
+
+    public int GrnLineId { get; set; }
+    public GrnLine? GrnLine { get; set; }
+
+    public string WarrantyNo { get; set; } = string.Empty;
+
+    /// <summary>Warranty coverage length in months, selected at receipt (e.g. 3/6/12/18).</summary>
+    public int WarrantyPeriodMonths { get; set; }
+}

Backend/ERPCore/Domain/Entities/HrDocumentType.cs

@@ -0,0 +1,24 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Staff document catalog (FR-HR-DOC-01) — the user's "DocType": a category of
+/// document (NIC, contract, certificate...), not the uploaded file itself (see
+/// <see cref="EmployeeDocument"/>, the "Doc"). Deactivated, not deleted, when
+/// referenced. Model: docs/12-BACKEND-HRM.md Part C.3.
+/// </summary>
+public class HrDocumentType
+{
+    public int HrDocumentTypeId { get; set; }
+    public string Code { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public HrDocumentCategory Category { get; set; }
+    public bool RequiredAtOnboarding { get; set; }
+    public bool ExpiryTracked { get; set; }
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/Item.cs

@@ -14,6 +14,9 @@ public class Item
     public string Name { get; set; } = string.Empty;
     public string? Description { get; set; }
 
+    /// <summary>Optional scan code for barcode/RFID lookup (unique when set).</summary>
+    public string? Barcode { get; set; }
+
     public int CategoryId { get; set; }
     public Category? Category { get; set; }
 
@@ -24,6 +27,12 @@ public class Item
     public int? BrandId { get; set; }
     public Brand? Brand { get; set; }
 
+    /// <summary>
+    /// The stocking unit — the pack the item is counted in (BOTTLE, PACKET, BOX, PCS).
+    /// <b>Every</b> quantity in the system is a count of these: stock layers, the ledger,
+    /// and every document line. Nothing converts, so this is the sole meaning of a
+    /// quantity and cannot be changed once the item has stock history.
+    /// </summary>
     public int BaseUomId { get; set; }
     public Uom? BaseUom { get; set; }
 
@@ -32,7 +41,54 @@ public class Item
 
     public StockNature StockNature { get; set; }
     public TrackingMode TrackingMode { get; set; }
-    public string? TaxClass { get; set; }
+    public Warranty Warranty { get; set; } = Warranty.NonWarranty;
+    /// <summary>Coverage length in months (see <see cref="Enums.WarrantyPeriods.AllowedMonths"/>) when <see cref="Warranty"/> is Warranty; null otherwise.</summary>
+    public int? WarrantyPeriodMonths { get; set; }
+
+    /// <summary>
+    /// The tax rate a sales/purchase line for this item defaults to (see
+    /// <see cref="TaxRate"/>) — replaces the old free-text "tax class" label that nothing
+    /// ever read. Null means no default; a line must be given an explicit tax percentage.
+    /// </summary>
+    public int? TaxRateId { get; set; }
+    public TaxRate? TaxRate { get; set; }
+
+    /// <summary>
+    /// Optional selling price range and flat price used by Sales only.
+    /// <c>null</c> values mean the field is not set. These values never enter costing/GRN/FIFO.
+    /// </summary>
+    public decimal? SellingMinPrice { get; set; }
+    public decimal? SellingMaxPrice { get; set; }
+    public decimal? SellingFlatPrice { get; set; }
+
+    /// <summary>
+    /// How much one pack holds, as the user entered it — <c>500</c> with
+    /// <see cref="ContentUnit"/> <c>Ml</c> for a 500 ml bottle, <c>1.5</c> with <c>L</c>
+    /// for a 1.5 L one. Null (together with the other three) when the item has no
+    /// measurable content: a screw, a label, a service.
+    /// <para>
+    /// Content never affects stock — that is always a pack count. It exists so production
+    /// can express a formula in millilitres or grams and resolve it to packs
+    /// (see <c>IItemMeasure</c>).
+    /// </para>
+    /// <para>
+    /// A loose bulk item bought by weight is modelled the same way:
+    /// <c>BaseUom = KG, ContentQty = 1, ContentUnit = Kg</c> ⇒ 1000 g per stocked unit.
+    /// </para>
+    /// </summary>
+    public decimal? ContentQty { get; set; }
+    public MeasureUnit? ContentUnit { get; set; }
+
+    /// <summary>
+    /// <see cref="ContentQty"/>/<see cref="ContentUnit"/> normalised to a base unit
+    /// (L→Ml, Kg→G, both ×1000) at write time by <c>ItemContent.Normalize</c>. Server-derived
+    /// and never accepted from a client. <see cref="ContentBaseUnit"/> is therefore only ever
+    /// <see cref="MeasureUnit.Ml"/> or <see cref="MeasureUnit.G"/>.
+    /// <para>Stored rather than recomputed so every consumer reads one settled number.</para>
+    /// </summary>
+    public decimal? ContentBaseQty { get; set; }
+    public MeasureUnit? ContentBaseUnit { get; set; }
+
     public EntityStatus Status { get; set; } = EntityStatus.Active;
 
     public DateTime CreatedAt { get; set; }
@@ -42,5 +98,4 @@ public class Item
     public uint RowVersion { get; set; }
 
     public ICollection<ItemReorder> ReorderSettings { get; set; } = new List<ItemReorder>();
-    public ICollection<UomConversion> UomConversions { get; set; } = new List<UomConversion>();
 }

Backend/ERPCore/Domain/Entities/ItemImage.cs

@@ -0,0 +1,27 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// A product photo attached to an item. Like <see cref="EmployeeDocument"/>, the file lives
+/// behind <see cref="Infra.Storage.IFileStorageService"/> under a server-generated name and is
+/// only reachable through the authenticated items API — never a static path. Only uploadable
+/// while <see cref="ProductConfig.ItemImagesEnabled"/> is on; existing images stay readable
+/// after the flag is switched off (reads are never gated).
+/// </summary>
+public class ItemImage
+{
+    public int ItemImageId { get; set; }
+    public int ItemId { get; set; }
+    public Item? Item { get; set; }
+
+    public string OriginalFileName { get; set; } = string.Empty;
+    public string StoredFileName { get; set; } = string.Empty;
+    public string RelativePath { get; set; } = string.Empty;
+    public string ContentType { get; set; } = string.Empty;
+    public long SizeBytes { get; set; }
+
+    /// <summary>Display order; the lowest is the item's main image.</summary>
+    public int SortOrder { get; set; }
+
+    public int UploadedBy { get; set; }
+    public DateTime UploadedAt { get; set; }
+}

Backend/ERPCore/Domain/Entities/ItemType.cs

@@ -7,12 +7,15 @@ namespace ERPCore.Domain.Entities;
 /// Material.
 /// <para>
 /// <b>Deliberately unlinked.</b> Nothing references this entity and it references
-/// nothing: there is no value table and no join to <see cref="Item"/>. Its only job is
-/// to feed the frontend's item-builder dropdown via <c>GET /item-types</c>. The chosen
+/// nothing: there is no value table and no join to <see cref="Item"/>. The chosen
 /// values (Red, S, M) are encoded by the client into the generated SKU
 /// (e.g. <c>BL-100-0003</c>) and are never stored or parsed server-side — the item list
 /// is the record of what was built. See the accepted trade-off in docs/10 Part C.9.
 /// </para>
+/// <para>
+/// It does, however, carry one piece of meaning the client acts on:
+/// <see cref="IsMeasurable"/>. So this is no longer purely a dropdown source.
+/// </para>
 /// Not to be confused with <see cref="Enums.StockNature"/> (Stocked/NonStocked/Service),
 /// which is what the old <c>ItemType</c> enum became.
 /// Model: docs/10-BACKEND-PHASE1.md Part C.1.
@@ -21,6 +24,24 @@ public class ItemType
 {
     public int ItemTypeId { get; set; }
     public string Name { get; set; } = string.Empty;
+
+    /// <summary>
+    /// When true, this dimension's values are content <b>measurements</b> (500 ml, 1 L) rather
+    /// than plain labels (Red, S). The item builder then captures a number + unit per value and
+    /// stamps that pair onto each generated item's <see cref="Item.ContentQty"/> /
+    /// <see cref="Item.ContentUnit"/>, instead of copying one form-level pair into every variant
+    /// — which is what makes "Coca-Cola in 500 ml / 1 L / 250 ml" three correctly sized items.
+    /// <para>
+    /// This is what lets an apparel <c>Size</c> (S/M/L) stay plain text while a
+    /// <c>Pack Size</c>/<c>Volume</c> dimension carries ml/g/L/kg.
+    /// </para>
+    /// <para>
+    /// A client hint only: the server never reads it when writing an item. Each item's pair is
+    /// still validated and normalised on its own by <c>ItemContent</c>.
+    /// </para>
+    /// </summary>
+    public bool IsMeasurable { get; set; }
+
     public EntityStatus Status { get; set; } = EntityStatus.Active;
 
     public DateTime CreatedAt { get; set; }

Backend/ERPCore/Domain/Entities/LeaveBalance.cs

@@ -0,0 +1,24 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Per employee/type/year leave entitlement (FR-HR-LV-03). Unique on
+/// (EmployeeId, LeaveTypeId, Year). RemainingDays is a computed projection, not
+/// stored. Model: docs/12-BACKEND-HRM.md Part C.5.
+/// </summary>
+public class LeaveBalance
+{
+    public int LeaveBalanceId { get; set; }
+    public int EmployeeId { get; set; }
+    public Employee? Employee { get; set; }
+    public int LeaveTypeId { get; set; }
+    public LeaveType? LeaveType { get; set; }
+    public int Year { get; set; }
+
+    public decimal EntitledDays { get; set; }
+    public decimal TakenDays { get; set; }
+    public decimal CarriedForwardDays { get; set; }
+    public decimal AdjustmentDays { get; set; }
+
+    public uint RowVersion { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+}

Backend/ERPCore/Domain/Entities/LeaveRequest.cs

@@ -0,0 +1,31 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Leave request (FR-HR-LV-02) — transactional document, numbered via
+/// <see cref="NumberSequence"/> (docType "LV"). Model: docs/12-BACKEND-HRM.md Part C.5.
+/// </summary>
+public class LeaveRequest
+{
+    public int LeaveRequestId { get; set; }
+    public string DocNo { get; set; } = string.Empty;
+    public int EmployeeId { get; set; }
+    public Employee? Employee { get; set; }
+    public int LeaveTypeId { get; set; }
+    public LeaveType? LeaveType { get; set; }
+
+    public DateTime StartDate { get; set; }
+    public DateTime EndDate { get; set; }
+    public decimal DaysCount { get; set; }
+    public string? Reason { get; set; }
+
+    public LeaveRequestStatus Status { get; set; } = LeaveRequestStatus.Draft;
+    public int? ApprovedBy { get; set; }
+    public DateTime? ApprovedAt { get; set; }
+    public string? RejectionReason { get; set; }
+
+    public int CreatedBy { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public uint RowVersion { get; set; }
+}

Backend/ERPCore/Domain/Entities/LeaveType.cs

@@ -0,0 +1,23 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>Leave type master (FR-HR-LV-01). Model: docs/12-BACKEND-HRM.md Part C.5.</summary>
+public class LeaveType
+{
+    public int LeaveTypeId { get; set; }
+    public string Code { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public bool IsPaid { get; set; } = true;
+    /// <summary>Feeds Payroll's No-Pay deduction when true (docs/12-BACKEND-HRM.md §6).</summary>
+    public bool CountsAsNoPay { get; set; }
+    public decimal AccrualPerYear { get; set; }
+    public bool CarryForwardAllowed { get; set; }
+    public int? MaxCarryForwardDays { get; set; }
+    public bool RequiresApproval { get; set; } = true;
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public uint RowVersion { get; set; }
+}