Ui fixings

feat: implement CustomerDetailPage for detailed customer view and editing

feat: create CustomersPage for listing and managing customers with filters

feat: add ColumnsMenu component for customizable table columns visibility

feat: implement CSV export functionality for data download

feat: add customer code generation logic for unique customer identifiers

.gitea/workflows/ci-cd.yml

@@ -3,13 +3,13 @@ name: CI/CD - ERP Core Monorepo
 on:
   pull_request:
     branches:
-      - Production
+      - production
     types:
       - closed
 
 jobs:
-  backend-build-and-deploy:
-    name: Build & Deploy ERP Core Backend
+  build-and-deploy-backend:
+    name: Build & Deploy Backend
     runs-on: linux
     if: github.event.pull_request.merged == true
     steps:
@@ -17,14 +17,12 @@ jobs:
         run: |
           git clone \
             --depth 1 \
-            --branch Production \
+            --branch production \
             https://oauth2:${{ secrets.ERPCORE }}@gitea.hexdive.com/New_REP_SYSTEM/ERP-core.git \
             .
-
-      - name: Restore backend
+      - name: Restore
         run: dotnet restore Backend/ERPCore.sln
-
-      - name: Publish backend
+      - name: Publish
         run: |
           rm -rf /tmp/erpcore-deploy
           mkdir -p /tmp/erpcore-deploy
@@ -33,53 +31,47 @@ jobs:
             -r linux-x64 \
             --self-contained true \
             -o /tmp/erpcore-deploy
-
-      - name: Stop backend service
+      - name: Stop service
         run: systemctl stop erpcore.service
-
-      - name: Copy backend to deploy folder
+      - 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 backend ownership and permissions
+      - name: Fix ownership and permissions
         run: |
-          chown -R erpcore:erpcore /home/erp/core/publish
+          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 backend service
+      - name: Restart service
         run: systemctl restart erpcore.service
-
-      - name: Verify backend
+      - name: Verify
         run: |
-          systemctl is-active erpcore.service && echo "Backend service running" || echo "Backend service failed"
+          systemctl is-active erpcore.service && echo "✅ Service running" || echo "❌ Service failed"
 
-  frontend-build-and-deploy:
-    name: Build & Deploy ERP Core Frontend
+  build-and-deploy-frontend:
+    name: Build & Deploy Frontend
     runs-on: linux
-    needs: backend-build-and-deploy
     if: github.event.pull_request.merged == true
     steps:
       - name: Checkout code
         run: |
           git clone \
             --depth 1 \
-            --branch Production \
+            --branch production \
             https://oauth2:${{ secrets.ERPCORE }}@gitea.hexdive.com/New_REP_SYSTEM/ERP-core.git \
             .
-
-      - name: Build frontend Docker image
-        run: docker build -t erpcore-frontend:latest Frontend/erp-system
-
-      - name: Stop & remove existing frontend container
+      - 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 frontend container
+      - name: Start container
         run: |
           docker run -d \
             --name erpcore-frontend \
@@ -92,11 +84,9 @@ jobs:
             --cap-drop ALL \
             --security-opt no-new-privileges \
             erpcore-frontend:latest
-
-      - name: Remove old frontend images
+      - name: Remove old images
         run: docker image prune -f
-
-      - name: Verify frontend
+      - name: Verify
         run: |
           docker ps --filter name=erpcore-frontend --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}" \
-            | grep erpcore-frontend && echo "Frontend container running" || echo "Frontend container failed"
+            | grep erpcore-frontend && echo "✅ Container running" || echo "❌ Container failed"

Backend/ERPCore/Controllers/BranchConfigController.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;
@@ -14,6 +16,7 @@ namespace ERPCore.Controllers;
 /// </para>
 /// </summary>
 [Route("api/v1/branch-config")]
+[Authorize(Policy = NavPolicies.Prefix + "settings")]
 public sealed class BranchConfigController : ApiControllerBase
 {
     private readonly IBranchConfigService _config;

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

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Sales;
@@ -7,6 +9,7 @@ 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;

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

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Customers;
@@ -8,6 +10,7 @@ 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;

Backend/ERPCore/Controllers/DashboardController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Dashboard;
 using ERPCore.Services.Interfaces;
 using Microsoft.AspNetCore.Mvc;
@@ -6,6 +8,7 @@ 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;

Backend/ERPCore/Controllers/FreeIssuesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Sales;
@@ -12,6 +14,7 @@ namespace ERPCore.Controllers;
 /// 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;

Backend/ERPCore/Controllers/GeneralLedgerController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Services.Interfaces;
 using Microsoft.AspNetCore.Mvc;
 
@@ -14,6 +16,7 @@ namespace ERPCore.Controllers;
 /// 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;

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;
@@ -8,6 +10,7 @@ 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;

Backend/ERPCore/Controllers/Hrm/EmployeesController.cs

@@ -94,13 +94,13 @@ public sealed class EmployeesController : ApiControllerBase
 
     /// <summary>Permanently deletes the employee and all dependent HR records. Blocked (409) if payroll history exists.</summary>
     [HttpDelete("{employeeId:int}")]
-    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(typeof(EmployeeDeleteResultDto), StatusCodes.Status200OK)]
     [ProducesResponseType(StatusCodes.Status404NotFound)]
     [ProducesResponseType(StatusCodes.Status409Conflict)]
-    public async Task<IActionResult> Delete(int employeeId, CancellationToken ct)
+    public async Task<ActionResult<EmployeeDeleteResultDto>> Delete(int employeeId, [FromQuery] bool deleteUserAccount, CancellationToken ct)
     {
-        await _employees.DeleteAsync(employeeId, ct);
-        return NoContent();
+        var result = await _employees.DeleteAsync(employeeId, deleteUserAccount, ct);
+        return Ok(result);
     }
 
     [HttpPost("{employeeId:int}/link-user")]

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 +30,30 @@ 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,
+        CancellationToken ct)
+        => Ok(await _items.GetOverviewAsync(query, status, categoryId, subCategoryId, brandId, 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)]

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

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Notifications;
 using ERPCore.Services.Interfaces;
 using Microsoft.AspNetCore.Mvc;
@@ -5,6 +7,7 @@ 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;

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;

Backend/ERPCore/Controllers/ProductionRunsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Production;
@@ -8,6 +10,7 @@ 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;

Backend/ERPCore/Controllers/ProductionTemplatesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Production;
@@ -8,6 +10,7 @@ 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;

Backend/ERPCore/Controllers/PurchaseInvoicesController.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;
@@ -9,6 +11,7 @@ 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;

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)]
@@ -57,7 +60,7 @@ public sealed class PurchaseOrdersController : ApiControllerBase
         return Ok(result.Value);
     }
 
-    /// <summary>Submit a Draft PO (Draft → Approved). 409 PO_NOT_EDITABLE if not Draft.</summary>
+    /// <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)]
@@ -67,6 +70,7 @@ public sealed class PurchaseOrdersController : ApiControllerBase
 
     /// <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)]
@@ -76,13 +80,28 @@ public sealed class PurchaseOrdersController : ApiControllerBase
         return NoContent();
     }
 
-    /// <summary>Approve — no-op in Phase 1 (POs auto-approve); transitions PendingApproval→Approved when enabled.</summary>
+    /// <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/SalesDayEndController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Sales;
 using ERPCore.Services.Interfaces;
@@ -8,6 +10,7 @@ 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;

Backend/ERPCore/Controllers/SalesInvoicesController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Sales;
@@ -7,6 +9,7 @@ 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;

Backend/ERPCore/Controllers/SalesReportsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Sales;
 using ERPCore.Services.Interfaces;
 using Microsoft.AspNetCore.Mvc;
@@ -5,6 +7,7 @@ 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;

Backend/ERPCore/Controllers/SalesReturnsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Sales;
 using ERPCore.Services.Interfaces;
@@ -7,6 +9,7 @@ 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;

Backend/ERPCore/Controllers/SalesSlipPromotionsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Dtos.Sales;
 using ERPCore.Services.Interfaces;
 using Microsoft.AspNetCore.Mvc;
@@ -5,6 +7,7 @@ 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;

Backend/ERPCore/Controllers/SalesSlipsController.cs

@@ -1,3 +1,5 @@
+using Microsoft.AspNetCore.Authorization;
+using ERPCore.Infra.Auth;
 using ERPCore.Domain.Enums;
 using ERPCore.Dtos.Common;
 using ERPCore.Dtos.Sales;
@@ -7,6 +9,7 @@ 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;

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;

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;

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;

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;

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

@@ -1,10 +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;
@@ -14,6 +17,7 @@ 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;
@@ -83,4 +87,20 @@ public sealed class UsersController : ApiControllerBase
     [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;
@@ -37,6 +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/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/BranchConfig.cs

@@ -17,6 +17,12 @@ public class BranchConfig
 
     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; }

Backend/ERPCore/Domain/Entities/Customer.cs

@@ -29,6 +29,9 @@ public class Customer
     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; }

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; }
 
@@ -41,7 +44,14 @@ public class Item
     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; }
-    public string? TaxClass { 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.

Backend/ERPCore/Domain/Entities/Notification.cs

@@ -0,0 +1,22 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// A single raised notification event (e.g. "GRN Confirmed"). Broadcast to
+/// active users via <see cref="NotificationRecipient"/> rows, gated by
+/// whether the module's InApp channel is enabled in <see cref="NotificationConfig"/>.
+/// </summary>
+public class Notification
+{
+    public int NotificationId { get; set; }
+
+    public string ModuleKey { get; set; } = string.Empty;
+    public string Title { get; set; } = string.Empty;
+    public string Message { get; set; } = string.Empty;
+
+    public string? RelatedEntityType { get; set; }
+    public int? RelatedEntityId { get; set; }
+
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+
+    public ICollection<NotificationRecipient> Recipients { get; set; } = new List<NotificationRecipient>();
+}

Backend/ERPCore/Domain/Entities/NotificationRecipient.cs

@@ -0,0 +1,18 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// Per-user read state for a broadcast <see cref="Notification"/>.
+/// </summary>
+public class NotificationRecipient
+{
+    public int NotificationRecipientId { get; set; }
+
+    public int NotificationId { get; set; }
+    public Notification? Notification { get; set; }
+
+    public int UserId { get; set; }
+    public User? User { get; set; }
+
+    public bool IsRead { get; set; }
+    public DateTime? ReadAt { get; set; }
+}

Backend/ERPCore/Domain/Entities/NumberSequence.cs

@@ -10,6 +10,10 @@ public class NumberSequence
 {
     public int SequenceId { get; set; }
     public string DocType { get; set; } = string.Empty;
+    /// <summary>Per-branch counter key (docs/BRANCH_ISOLATION_PLAN.md §5) — backfilled to the
+    /// deployment's default branch for rows that predate per-branch numbering.</summary>
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
     public int Year { get; set; }
     public int LastNumber { get; set; }
 }

Backend/ERPCore/Domain/Entities/PurchaseInvoice.cs

@@ -20,6 +20,9 @@ public class PurchaseInvoice
     public int VendorId { get; set; }
     public Vendor? Vendor { get; set; }
 
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
+
     public string VendorSnapshotName { get; set; } = string.Empty;
     public string? VendorSnapshotTaxNo { get; set; }
 

Backend/ERPCore/Domain/Entities/PurchaseOrder.cs

@@ -5,9 +5,10 @@ namespace ERPCore.Domain.Entities;
 /// <summary>
 /// Purchase order header (FR-PROC-03..06). Mutable aggregate with a
 /// <see cref="RowVersion"/> ETag token; editable while open (FR-PROC-05).
-/// Phase 1 auto-approves on creation; <see cref="ApprovalRequired"/> is retained
-/// for the future approval workflow. Totals are computed server-side from lines
-/// (not stored). Model: docs/10 Part C.2.
+/// A submitted/issued PO goes to <see cref="PurchaseOrderStatus.PendingApproval"/> and
+/// needs a separate Approve action (an Admin who isn't <see cref="CreatedBy"/>) before it
+/// reaches <see cref="PurchaseOrderStatus.Approved"/>. Totals are computed server-side
+/// from lines (not stored). Model: docs/10 Part C.2.
 /// </summary>
 public class PurchaseOrder
 {
@@ -17,15 +18,25 @@ public class PurchaseOrder
     public int VendorId { get; set; }
     public Vendor? Vendor { get; set; }
 
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
+
     public int? RequisitionId { get; set; }
     public Requisition? Requisition { get; set; }
 
     public PurchaseOrderStatus Status { get; set; } = PurchaseOrderStatus.Draft;
+    /// <summary>True once the PO has been (or needs to be) routed through approval —
+    /// i.e. it is not a still-editable Draft.</summary>
     public bool ApprovalRequired { get; set; }
 
     public int CreatedBy { get; set; }
     public User? Creator { get; set; }
 
+    /// <summary>Who approved this PO — set only when <see cref="Status"/> reaches Approved.</summary>
+    public int? ApprovedBy { get; set; }
+    public User? Approver { get; set; }
+    public DateTime? ApprovedAt { get; set; }
+
     public DateTime CreatedAt { get; set; }
     public DateTime? UpdatedAt { get; set; }
 

Backend/ERPCore/Domain/Entities/Requisition.cs

@@ -14,6 +14,9 @@ public class Requisition
     public int RequestedBy { get; set; }
     public User? Requester { get; set; }
 
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
+
     public RequisitionStatus Status { get; set; } = RequisitionStatus.Draft;
     public DateTime CreatedAt { get; set; }
 

Backend/ERPCore/Domain/Entities/Rfq.cs

@@ -14,6 +14,9 @@ public class Rfq
     public int RequisitionId { get; set; }
     public Requisition? Requisition { get; set; }
 
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
+
     public RfqStatus Status { get; set; } = RfqStatus.Open;
     public DateTime CreatedAt { get; set; }
 

Backend/ERPCore/Domain/Entities/RolePermission.cs

@@ -1,3 +1,5 @@
+using ERPCore.Domain.Enums;
+
 namespace ERPCore.Domain.Entities;
 
 /// <summary>Join row granting a <see cref="Role"/> visibility of a <see cref="Permission"/> (nav node).</summary>
@@ -6,6 +8,13 @@ public class RolePermission
     public int RoleId { get; set; }
     public int PermissionId { get; set; }
 
+    /// <summary>
+    /// Which mutating actions the role may perform within this permission's module
+    /// (see <see cref="RolePermissionAction"/>); defaults to <see cref="RolePermissionAction.All"/>
+    /// so existing grants keep today's behavior until an admin narrows them.
+    /// </summary>
+    public RolePermissionAction Actions { get; set; } = RolePermissionAction.All;
+
     public Role? Role { get; set; }
     public Permission? Permission { get; set; }
 }

Backend/ERPCore/Domain/Entities/SalesDayEnd.cs

@@ -27,6 +27,16 @@ public class SalesDayEnd
     public decimal TaxTotal { get; set; }
     public decimal GrandTotal { get; set; }
 
+    /// <summary>
+    /// Sum of <see cref="SalesSlip.PaidAmount"/> across the day's slips (bundle sales have no
+    /// partial-payment field and are always counted as fully paid) — what actually gets debited
+    /// to Cash on close. <see cref="BalanceTotal"/> is the rest (<c>GrandTotal - PaidTotal</c>),
+    /// debited to Accounts Receivable instead. Before partial payments existed these were always
+    /// equal to GrandTotal/0 respectively (every sale was assumed fully cash).
+    /// </summary>
+    public decimal PaidTotal { get; set; }
+    public decimal BalanceTotal { get; set; }
+
     /// <summary>Sum of the FIFO cost consumed for these slips (from <see cref="StockLedger"/>), for the COGS GL lines.</summary>
     public decimal CostOfGoodsSold { get; set; }
 

Backend/ERPCore/Domain/Entities/SalesSlipLine.cs

@@ -19,6 +19,12 @@ public class SalesSlipLine
     public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
+    public int? BatchId { get; set; }
+    public Batch? Batch { get; set; }
+
+    public int? SerialId { get; set; }
+    public Serial? Serial { get; set; }
+
     public decimal UnitPrice { get; set; }
     public decimal BaseCost { get; set; }
     public string PriceSource { get; set; } = string.Empty;

Backend/ERPCore/Domain/Entities/Serial.cs

@@ -13,4 +13,7 @@ public class Serial
 
     public string SerialNo { get; set; } = string.Empty;
     public string Status { get; set; } = "InStock";
+
+    /// <summary>Optional scan code for barcode/RFID lookup (unique when set).</summary>
+    public string? Barcode { get; set; }
 }

Backend/ERPCore/Domain/Entities/StockCountLine.cs

@@ -16,6 +16,12 @@ public class StockCountLine
 
     public int? BinId { get; set; }
 
+    public int? BatchId { get; set; }
+    public Batch? Batch { get; set; }
+
+    public int? SerialId { get; set; }
+    public Serial? Serial { get; set; }
+
     public decimal SystemQty { get; set; }
     public decimal? CountedQty { get; set; }
     public decimal? Variance { get; set; }

Backend/ERPCore/Domain/Entities/SupportTicket.cs

@@ -0,0 +1,25 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// A help-desk ticket raised by a user from the Help page. Status is
+/// admin-managed; the conversation is a flat thread of <see cref="SupportTicketMessage"/> rows.
+/// Field/concurrency shape follows the same conventions as <see cref="Employee"/>
+/// (CreatedBy/UpdatedBy actor stamps, RowVersion for optimistic concurrency).
+/// </summary>
+public class SupportTicket
+{
+    public int TicketId { get; set; }
+
+    public string Subject { get; set; } = string.Empty;
+    public TicketStatus Status { get; set; } = TicketStatus.Open;
+
+    public int CreatedBy { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public int? UpdatedBy { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public uint RowVersion { get; set; }
+
+    public ICollection<SupportTicketMessage> Messages { get; set; } = new List<SupportTicketMessage>();
+}

Backend/ERPCore/Domain/Entities/SupportTicketMessage.cs

@@ -0,0 +1,16 @@
+namespace ERPCore.Domain.Entities;
+
+/// <summary>One message in a <see cref="SupportTicket"/> thread — from the submitter or an admin.</summary>
+public class SupportTicketMessage
+{
+    public int MessageId { get; set; }
+
+    public int TicketId { get; set; }
+    public SupportTicket? Ticket { get; set; }
+
+    public int SenderUserId { get; set; }
+    public bool IsFromAdmin { get; set; }
+    public string Message { get; set; } = string.Empty;
+
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+}

Backend/ERPCore/Domain/Entities/TaxRate.cs

@@ -0,0 +1,27 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Domain.Entities;
+
+/// <summary>
+/// A named tax rate (e.g. "Standard" 15%, "Zero-Rated" 0%, "Exempt" 0%) — the real backing
+/// for <see cref="Item.TaxRateId"/>. Before this existed, <c>Item.TaxClass</c> was a free-text
+/// label nothing ever read, and every sales/purchase line carried its own hand-typed tax
+/// percentage with no link back to the item at all. Now a line's tax defaults to whatever
+/// percentage the item's assigned TaxRate carries at the moment the line is created — change
+/// the rate here and every new document picks it up; a line already created keeps the percentage
+/// it was given (SalesSlipLine.TaxPct etc. are snapshots, never recomputed from this table).
+/// </summary>
+public class TaxRate
+{
+    public int TaxRateId { get; set; }
+    public string Code { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public decimal Percentage { 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/Uom.cs

@@ -1,3 +1,5 @@
+using ERPCore.Domain.Enums;
+
 namespace ERPCore.Domain.Entities;
 
 /// <summary>
@@ -10,4 +12,8 @@ public class Uom
 {
     public int UomId { get; set; }
     public string Name { get; set; } = string.Empty;
+    public EntityStatus Status { get; set; } = EntityStatus.Active;
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
 }

Backend/ERPCore/Domain/Entities/Vendor.cs

@@ -17,6 +17,9 @@ public class Vendor
     public string Currency { get; set; } = "LKR";
     public EntityStatus Status { get; set; } = EntityStatus.Active;
 
+    public int BranchId { get; set; }
+    public Branch? Branch { get; set; }
+
     public DateTime CreatedAt { get; set; }
     public DateTime? UpdatedAt { get; set; }
 

Backend/ERPCore/Domain/Entities/Warehouse.cs

@@ -9,6 +9,8 @@ public class Warehouse
     public int WarehouseId { get; set; }
     public string Code { get; set; } = string.Empty;
     public string Name { get; set; } = string.Empty;
+    public string? Address { get; set; }
+    public string? Phone { get; set; }
     public int BranchId { get; set; }
     public Branch? Branch { get; set; }
 

Backend/ERPCore/Domain/Enums/PurchaseOrderStatus.cs

@@ -1,9 +1,10 @@
 namespace ERPCore.Domain.Enums;
 
 /// <summary>
-/// Purchase-order lifecycle (docs/11 §8; docs/10 §B.8.1). Phase 1 auto-approves on
-/// creation, so <see cref="PendingApproval"/> is reserved (not entered) until the
-/// approval workflow is enabled (FR-PROC-04). Stored as a string.
+/// Purchase-order lifecycle (docs/11 §8; docs/10 §B.8.1). Issuing a PO (create
+/// non-draft, or submit a Draft) enters <see cref="PendingApproval"/>; an Admin who
+/// isn't the creator must Approve it to reach <see cref="Approved"/>, or Reject it back
+/// to <see cref="Draft"/> (FR-PROC-04). Stored as a string.
 /// </summary>
 public enum PurchaseOrderStatus
 {

Backend/ERPCore/Domain/Enums/RolePermissionAction.cs

@@ -0,0 +1,21 @@
+namespace ERPCore.Domain.Enums;
+
+/// <summary>
+/// Fine-grained actions a <see cref="Entities.RolePermission"/> can grant within a module
+/// it already has nav-level access to (see <see cref="Infra.Auth.NavPolicies"/>). Nav-level
+/// access answers "can this role reach this module"; this answers "which mutations within
+/// it can this role actually perform" — e.g. a role that can see Procurement but should not
+/// be able to delete or approve purchase orders.
+/// </summary>
+[Flags]
+public enum RolePermissionAction
+{
+    None = 0,
+    View = 1,
+    Create = 2,
+    Edit = 4,
+    Delete = 8,
+    Approve = 16,
+
+    All = View | Create | Edit | Delete | Approve
+}

Backend/ERPCore/Domain/Enums/TicketStatus.cs

@@ -0,0 +1,8 @@
+namespace ERPCore.Domain.Enums;
+
+public enum TicketStatus
+{
+    Open,
+    InProgress,
+    Resolved
+}

Backend/ERPCore/Dtos/Auth/AuthUserDtos.cs

@@ -29,6 +29,21 @@ public sealed class AuthSessionResponse
     public int ExpiresIn { get; set; }
 }
 
+/// <summary>Result of AuthHex's admin-only deleteUser function.</summary>
+public sealed class DeleteAuthHexUserResult
+{
+    public int DeletedCount { get; set; }
+    public List<DeletedAuthHexUser>? Deleted { get; set; }
+}
+
+public sealed class DeletedAuthHexUser
+{
+    public Guid Id { get; set; }
+    public string? FullName { get; set; }
+    public string? UserName { get; set; }
+    public string? Email { get; set; }
+}
+
 public sealed class RegisterRequest
 {
     /// <summary>Optional — AuthHex requires a client-supplied id; ERPCore generates one when omitted.</summary>

Backend/ERPCore/Dtos/Config/BranchConfigDtos.cs

@@ -4,7 +4,7 @@ namespace ERPCore.Dtos.Config;
 
 /// <summary>Branch configuration resource — the singleton toggle for whether this deployment
 /// requires a branch on Employee/Warehouse records at all.</summary>
-public sealed record BranchConfigDto(bool BranchingEnabled, DateTime? UpdatedAt, int? UpdatedBy);
+public sealed record BranchConfigDto(bool BranchingEnabled, bool WarehouseBranchingEnabled, DateTime? UpdatedAt, int? UpdatedBy);
 
 /// <summary>
 /// Full replacement of the flag. <c>UpdatedBy</c> is derived from the token, never posted.
@@ -17,4 +17,5 @@ public sealed record BranchConfigDto(bool BranchingEnabled, DateTime? UpdatedAt,
 public sealed class UpdateBranchConfigRequest
 {
     [Required] public bool? BranchingEnabled { get; set; }
+    [Required] public bool? WarehouseBranchingEnabled { get; set; }
 }

Backend/ERPCore/Dtos/Customers/CustomerDtos.cs

@@ -21,6 +21,7 @@ public sealed record CustomerDto(
     int CreditDays,
     int? DefaultWarehouseId,
     EntityStatus Status,
+    int BranchId,
     DateTime CreatedAt,
     DateTime? UpdatedAt);
 
@@ -40,6 +41,7 @@ public sealed class CreateCustomerRequest
     [Range(0, double.MaxValue)] public decimal CreditLimit { get; set; }
     [Range(0, int.MaxValue)] public int CreditDays { get; set; }
     public int? DefaultWarehouseId { get; set; }
+    public int BranchId { get; set; }
 }
 
 public sealed class UpdateCustomerRequest
@@ -58,6 +60,7 @@ public sealed class UpdateCustomerRequest
     [Range(0, double.MaxValue)] public decimal CreditLimit { get; set; }
     [Range(0, int.MaxValue)] public int CreditDays { get; set; }
     public int? DefaultWarehouseId { get; set; }
+    public int BranchId { get; set; }
 }
 
 public sealed class UpdateCustomerStatusRequest

Backend/ERPCore/Dtos/Dashboard/DashboardDtos.cs

@@ -4,9 +4,12 @@ namespace ERPCore.Dtos.Dashboard;
 /// Aggregate counts for the dashboard overview — mirrors the widget set in
 /// docs/dashboard-implementation.pdf: reorder alerts, on-hand summary, stock valuation,
 /// pending-approval POs, pending GRNs, open requisitions, open counts awaiting posting,
-/// and open RFQs. Recent movements isn't here — it's just GET /stock/ledger with a small
-/// pageSize, no aggregation needed. A single computed-on-read object, not a stored
-/// entity — same as reorder alerts (docs/11 §5.7).
+/// open RFQs, pending leave requests, and overdue sales invoices. Also reused as small
+/// KPI tiles on individual list pages (Purchase Orders, GRN, Requisitions, RFQs, Stock
+/// Counts, Reorder Alerts, HRM Leave, Sales Invoices), not just the Dashboard home page.
+/// Recent movements isn't here — it's just GET /stock/ledger with a small pageSize, no
+/// aggregation needed. A single computed-on-read object, not a stored entity — same as
+/// reorder alerts (docs/11 §5.7).
 /// </summary>
 public sealed record DashboardStatsDto(
     int LowStockAlerts,
@@ -18,7 +21,9 @@ public sealed record DashboardStatsDto(
     int PendingGrns,
     int OpenRequisitions,
     int PendingCounts,
-    int OpenRfqs);
+    int OpenRfqs,
+    int PendingLeaveRequests,
+    int OverdueSalesInvoices);
 
 /// <summary>One bar in the Stock Valuation chart — total FIFO layer value for a warehouse.</summary>
 public sealed record WarehouseValuationDto(int WarehouseId, decimal Total);

Backend/ERPCore/Dtos/Grn/GrnDtos.cs

@@ -22,7 +22,7 @@ public sealed record GrnDto(
 /// <summary>Row shape for <c>GET /grns</c> — line count instead of the lines themselves.</summary>
 public sealed record GrnSummaryDto(
     int GrnId, string DocNo, int? PoId, int VendorId, int WarehouseId, int BranchId, GrnStatus Status,
-    int CreatedBy, DateTime CreatedAt, DateTime? PostedAt, int LineCount,
+    int CreatedBy, DateTime CreatedAt, DateTime? PostedAt, int LineCount, decimal TotalValue,
     int? PurchaseInvoiceId, string? PurchaseInvoiceNo);
 
 public sealed record CreatedLayerDto(
@@ -63,8 +63,9 @@ public sealed class CreateGrnLineInput
     [Range(0, double.MaxValue)] public decimal UnitCost { get; set; }
     /// <summary>Trade discount percentage (0–100). Reduces the inventory cost.</summary>
     [Range(0, 100)] public decimal DiscountPct { get; set; }
-    /// <summary>VAT percentage (0–100). Recoverable — does not affect stock value.</summary>
-    [Range(0, 100)] public decimal VatPct { get; set; }
+    /// <summary>VAT percentage (0–100). Recoverable — does not affect stock value. Explicit
+    /// override; omit (null) to use the item's assigned TaxRate percentage instead.</summary>
+    [Range(0, 100)] public decimal? VatPct { get; set; }
     [EnumDataType(typeof(HoldStatus))] public HoldStatus HoldStatus { get; set; } = HoldStatus.Available;
     public BatchInput? Batch { get; set; }
     /// <summary>

Backend/ERPCore/Dtos/Hrm/EmployeeDtos.cs

@@ -3,6 +3,8 @@ using ERPCore.Domain.Enums;
 
 namespace ERPCore.Dtos.Hrm;
 
+public sealed record EmployeeDeleteResultDto(bool UserAccountDeleted, bool UserAccountDeactivated, bool AuthHexIdentityPurged = false);
+
 public sealed record EmployeeListItemDto(
     int EmployeeId, string EmployeeCode, string FullName, string? Email,
     int DepartmentId, string? DepartmentName, int DesignationId, string? DesignationName,

Backend/ERPCore/Dtos/Items/ItemDtos.cs

@@ -10,10 +10,11 @@ public sealed record ItemListItemDto(
     int ItemId, string Sku, string Name, int CategoryId, int? SubCategoryId, int? BrandId,
     int BaseUomId, int? DefaultVendorId, StockNature StockNature, TrackingMode TrackingMode,
     Warranty Warranty, int? WarrantyPeriodMonths,
-    string? TaxClass, decimal? SellingMinPrice, decimal? SellingMaxPrice, decimal? SellingFlatPrice,
+    int? TaxRateId, string? TaxRateName, decimal? TaxRatePercentage,
+    decimal? SellingMinPrice, decimal? SellingMaxPrice, decimal? SellingFlatPrice,
     decimal? ContentQty, MeasureUnit? ContentUnit,
     decimal? ContentBaseQty, MeasureUnit? ContentBaseUnit,
-    EntityStatus Status);
+    EntityStatus Status, string? Barcode);
 
 /// <summary>A single per-warehouse reorder policy row.</summary>
 public sealed record ItemReorderDto(int WarehouseId, decimal ReorderPoint, decimal ReorderQty);
@@ -31,10 +32,11 @@ public sealed record ItemDetailDto(
     int? SubCategoryId, int? BrandId, int BaseUomId, int? DefaultVendorId,
     StockNature StockNature, TrackingMode TrackingMode,
     Warranty Warranty, int? WarrantyPeriodMonths,
-    string? TaxClass, decimal? SellingMinPrice, decimal? SellingMaxPrice, decimal? SellingFlatPrice,
+    int? TaxRateId, string? TaxRateName, decimal? TaxRatePercentage,
+    decimal? SellingMinPrice, decimal? SellingMaxPrice, decimal? SellingFlatPrice,
     decimal? ContentQty, MeasureUnit? ContentUnit,
     decimal? ContentBaseQty, MeasureUnit? ContentBaseUnit,
-    EntityStatus Status, IReadOnlyList<ItemReorderDto> Reorder,
+    EntityStatus Status, string? Barcode, IReadOnlyList<ItemReorderDto> Reorder,
     DateTime CreatedAt, DateTime? UpdatedAt);
 
 /// <summary>Response body for <c>PUT /items/{id}/reorder</c>.</summary>
@@ -64,7 +66,8 @@ public sealed class CreateItemRequest
     [EnumDataType(typeof(Warranty))] public Warranty Warranty { get; set; } = Warranty.NonWarranty;
     /// <summary>Required (one of <see cref="Enums.WarrantyPeriods.AllowedMonths"/>) when <see cref="Warranty"/> is Warranty; ignored otherwise.</summary>
     public int? WarrantyPeriodMonths { get; set; }
-    [StringLength(20)] public string? TaxClass { get; set; }
+    /// <summary>The tax rate sales/purchase lines for this item default to — see <see cref="Domain.Entities.TaxRate"/>.</summary>
+    public int? TaxRateId { get; set; }
     /// <summary>Optional fixed sale price (Sales only). Null ⇒ sell at stock/FIFO value.</summary>
     [Range(0, double.MaxValue)] public decimal? SellingMinPrice { get; set; }
     [Range(0, double.MaxValue)] public decimal? SellingMaxPrice { get; set; }
@@ -77,6 +80,8 @@ public sealed class CreateItemRequest
     /// </summary>
     [Range(0.0001, double.MaxValue)] public decimal? ContentQty { get; set; }
     [EnumDataType(typeof(MeasureUnit))] public MeasureUnit? ContentUnit { get; set; }
+    /// <summary>Optional scan code for barcode/RFID lookup. Unlike <see cref="Sku"/>, not required.</summary>
+    [StringLength(100)] public string? Barcode { get; set; }
 }
 
 public sealed class UpdateItemRequest
@@ -96,7 +101,8 @@ public sealed class UpdateItemRequest
     [EnumDataType(typeof(Warranty))] public Warranty Warranty { get; set; } = Warranty.NonWarranty;
     /// <summary>Required (one of <see cref="Enums.WarrantyPeriods.AllowedMonths"/>) when <see cref="Warranty"/> is Warranty; ignored otherwise.</summary>
     public int? WarrantyPeriodMonths { get; set; }
-    [StringLength(20)] public string? TaxClass { get; set; }
+    /// <summary>The tax rate sales/purchase lines for this item default to — see <see cref="Domain.Entities.TaxRate"/>.</summary>
+    public int? TaxRateId { get; set; }
     /// <summary>Optional fixed sale price (Sales only). Null ⇒ sell at stock/FIFO value.</summary>
     [Range(0, double.MaxValue)] public decimal? SellingMinPrice { get; set; }
     [Range(0, double.MaxValue)] public decimal? SellingMaxPrice { get; set; }
@@ -109,6 +115,8 @@ public sealed class UpdateItemRequest
     /// </summary>
     [Range(0.0001, double.MaxValue)] public decimal? ContentQty { get; set; }
     [EnumDataType(typeof(MeasureUnit))] public MeasureUnit? ContentUnit { get; set; }
+    /// <summary>Optional scan code for barcode/RFID lookup. Unlike <see cref="Sku"/>, not required.</summary>
+    [StringLength(100)] public string? Barcode { get; set; }
 }
 
 public sealed class UpdateItemStatusRequest

Backend/ERPCore/Dtos/Items/ItemOverviewDtos.cs

@@ -0,0 +1,18 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Dtos.Items;
+
+/// <summary>
+/// Item row enriched with cross-module aggregates (current FIFO stock value, low-stock
+/// flag, last purchase, trailing-30-day sales) for the Items list page. Deliberately a
+/// separate endpoint from <see cref="ItemListItemDto"/>'s <c>GET /items</c> — that list
+/// also backs the GRN/PO/Requisition/RFQ item pickers, which don't need these aggregates
+/// computed on every keystroke.
+/// </summary>
+public sealed record ItemOverviewDto(
+    int ItemId, string Sku, string Name,
+    int CategoryId, int? SubCategoryId, int? BrandId,
+    EntityStatus Status,
+    decimal StockQty, decimal StockValue, bool IsLowStock,
+    DateTime? LastPurchaseDate, int? LastSupplierId, string? LastSupplierName,
+    decimal SalesQtyLast30Days);

Backend/ERPCore/Dtos/Items/ItemScanDtos.cs

@@ -0,0 +1,11 @@
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Dtos.Items;
+
+/// <summary>Result of a barcode/RFID scan lookup — an item, or an item resolved via a
+/// specific batch/serial. See <see cref="Services.Interfaces.IItemService.ScanAsync"/>.</summary>
+public sealed record ItemScanResultDto(
+    int ItemId, string Sku, string Name, TrackingMode TrackingMode, int BaseUomId,
+    string MatchedBy, // "Item" | "Batch" | "Serial"
+    int? BatchId, string? BatchNo, DateOnly? ExpiryDate,
+    int? SerialId, string? SerialNo, string? SerialStatus);

Backend/ERPCore/Dtos/Notifications/NotificationDtos.cs

@@ -0,0 +1,15 @@
+namespace ERPCore.Dtos.Notifications;
+
+public sealed record NotificationDto(
+    int NotificationId,
+    string ModuleKey,
+    string Title,
+    string Message,
+    string? RelatedEntityType,
+    int? RelatedEntityId,
+    DateTime CreatedAt,
+    bool IsRead);
+
+public sealed record NotificationFeedDto(
+    IReadOnlyList<NotificationDto> Notifications,
+    int UnreadCount);

Backend/ERPCore/Dtos/Procurement/PurchaseInvoiceDtos.cs

@@ -12,14 +12,14 @@ public sealed record PurchaseInvoiceTotalsDto(
 
 public sealed record PurchaseInvoiceDto(
     int PurchaseInvoiceId, string DocNo, string VendorInvoiceNo, DateTime VendorInvoiceDate,
-    int VendorId, string VendorSnapshotName, string? VendorSnapshotTaxNo,
+    int VendorId, int BranchId, string VendorSnapshotName, string? VendorSnapshotTaxNo,
     PurchaseInvoiceStatus Status, int GrnCount, int CreatedBy, DateTime CreatedAt, DateTime? UpdatedAt,
     string? GlJournalNo, DateTime? GlPostedAt,
     PurchaseInvoiceTotalsDto Totals, IReadOnlyList<PurchaseInvoiceLineDto> Lines);
 
 public sealed record PurchaseInvoiceSummaryDto(
     int PurchaseInvoiceId, string DocNo, string VendorInvoiceNo, DateTime VendorInvoiceDate,
-    int VendorId, string VendorSnapshotName, PurchaseInvoiceStatus Status, int GrnCount,
+    int VendorId, int BranchId, string VendorSnapshotName, PurchaseInvoiceStatus Status, int GrnCount,
     PurchaseInvoiceTotalsDto Totals, DateTime CreatedAt, string? GlJournalNo);
 
 public sealed record PurchaseInvoicePaymentDto(

Backend/ERPCore/Dtos/Procurement/PurchaseOrderDtos.cs

@@ -12,13 +12,14 @@ public sealed record PoLineDto(
 public sealed record PoTotalsDto(decimal SubTotal, decimal Tax, decimal GrandTotal, string Currency);
 
 public sealed record PurchaseOrderDto(
-    int PoId, string DocNo, int VendorId, int? RequisitionId, PurchaseOrderStatus Status,
-    bool ApprovalRequired, int CreatedBy, DateTime CreatedAt, DateTime? UpdatedAt,
+    int PoId, string DocNo, int VendorId, int BranchId, int? RequisitionId, PurchaseOrderStatus Status,
+    bool ApprovalRequired, int CreatedBy, int? ApprovedBy, DateTime? ApprovedAt,
+    DateTime CreatedAt, DateTime? UpdatedAt,
     PoTotalsDto Totals, IReadOnlyList<PoLineDto> Lines);
 
 public sealed record PurchaseOrderSummaryDto(
-    int PoId, string DocNo, int VendorId, PurchaseOrderStatus Status,
-    bool ApprovalRequired, DateTime CreatedAt, PoTotalsDto Totals);
+    int PoId, string DocNo, int VendorId, int BranchId, PurchaseOrderStatus Status,
+    bool ApprovalRequired, int CreatedBy, DateTime CreatedAt, PoTotalsDto Totals);
 
 // Requests — server sets docNo, status, createdBy, timestamps, qtyReceived, totals
 
@@ -35,12 +36,13 @@ public sealed class CreatePurchaseOrderRequest
 {
     [Required] public int VendorId { get; set; }
     public int? RequisitionId { get; set; }
+    public int BranchId { get; set; }
     [Required, MinLength(1)] public List<CreatePoLineInput> Lines { get; set; } = new();
 
     /// <summary>
     /// When true the PO is created in <c>Draft</c> (editable/deletable, not yet issued).
-    /// When false (default) it auto-approves on creation, preserving the Requisition→PO
-    /// and RFQ→PO flows unchanged (docs/11 §3.3).
+    /// When false (default) it is issued immediately into <c>PendingApproval</c>, same as
+    /// submitting a Draft (docs/11 §3.3).
     /// </summary>
     public bool SaveAsDraft { get; set; }
 }
@@ -49,6 +51,7 @@ public sealed class UpdatePurchaseOrderRequest
 {
     [Required] public int VendorId { get; set; }
     public int? RequisitionId { get; set; }
+    public int BranchId { get; set; }
     [Required, MinLength(1)] public List<CreatePoLineInput> Lines { get; set; } = new();
 }
 
@@ -56,3 +59,8 @@ public sealed class CancelPurchaseOrderRequest
 {
     [StringLength(500)] public string? Reason { get; set; }
 }
+
+public sealed class RejectPurchaseOrderRequest
+{
+    [StringLength(500)] public string? Reason { get; set; }
+}

Backend/ERPCore/Dtos/Procurement/RequisitionDtos.cs

@@ -8,11 +8,11 @@ namespace ERPCore.Dtos.Procurement;
 public sealed record RequisitionLineDto(int ReqLineId, int ItemId, decimal Qty, DateOnly? RequiredBy);
 
 public sealed record RequisitionDto(
-    int RequisitionId, string DocNo, RequisitionStatus Status, int RequestedBy,
+    int RequisitionId, string DocNo, RequisitionStatus Status, int RequestedBy, int BranchId,
     DateTime CreatedAt, IReadOnlyList<RequisitionLineDto> Lines);
 
 public sealed record RequisitionSummaryDto(
-    int RequisitionId, string DocNo, RequisitionStatus Status, int RequestedBy, DateTime CreatedAt, int LineCount);
+    int RequisitionId, string DocNo, RequisitionStatus Status, int RequestedBy, int BranchId, DateTime CreatedAt, int LineCount);
 
 // Requests — server sets docNo, status, requestedBy (audit actor), timestamps ----
 
@@ -26,4 +26,7 @@ public sealed class CreateRequisitionLineInput
 public sealed class CreateRequisitionRequest
 {
     [Required, MinLength(1)] public List<CreateRequisitionLineInput> Lines { get; set; } = new();
+    /// <summary>Optional — resolved via <see cref="Services.Interfaces.IBranchConfigService.ResolveBranchIdAsync"/>
+    /// when branching is enabled; ignored (defaulted) otherwise.</summary>
+    public int BranchId { get; set; }
 }

Backend/ERPCore/Dtos/Procurement/RfqDtos.cs

@@ -8,11 +8,11 @@ namespace ERPCore.Dtos.Procurement;
 public sealed record RfqLineDto(int RfqLineId, int ItemId, decimal Qty);
 
 public sealed record RfqDto(
-    int RfqId, string DocNo, int RequisitionId, RfqStatus Status, IReadOnlyList<RfqLineDto> Lines);
+    int RfqId, string DocNo, int RequisitionId, int BranchId, RfqStatus Status, IReadOnlyList<RfqLineDto> Lines);
 
 /// <summary>Row shape for <c>GET /rfqs</c> — line/quotation counts instead of the lines themselves.</summary>
 public sealed record RfqSummaryDto(
-    int RfqId, string DocNo, int RequisitionId, RfqStatus Status, int LineCount, int QuotationCount);
+    int RfqId, string DocNo, int RequisitionId, int BranchId, RfqStatus Status, int LineCount, int QuotationCount);
 
 public sealed record QuotationLineDto(int ItemId, decimal UnitPrice, int LeadDays);
 

Backend/ERPCore/Dtos/Rbac/MeDtos.cs

@@ -11,4 +11,4 @@ namespace ERPCore.Dtos.Rbac;
 /// entirely rather than merely restricting them by role.</summary>
 public sealed record MeResponseDto(
     string? RoleCode, string? RoleName, IReadOnlyList<string> NavCodes,
-    bool IsAdmin, int? BranchId, string? BranchName, bool BranchingEnabled);
+    bool IsAdmin, int? BranchId, string? BranchName, bool BranchingEnabled, bool WarehouseBranchingEnabled);

Backend/ERPCore/Dtos/Rbac/RoleDtos.cs

@@ -29,6 +29,22 @@ public sealed class AssignRolePermissionsRequest
 {
     public List<int> NavItemIds { get; set; } = new();
     public List<int> SubNavItemIds { get; set; } = new();
+
+    /// <summary>
+    /// Optional per-nav/sub-nav-item action override, keyed by <c>NavItemId</c>/
+    /// <c>SubNavItemId</c> and valued with a <see cref="RolePermissionAction"/> bitmask
+    /// (e.g. <c>View|Create|Edit</c> = 7 to grant a module without Delete/Approve). An id
+    /// present in <see cref="NavItemIds"/>/<see cref="SubNavItemIds"/> but absent here
+    /// keeps today's default of <see cref="RolePermissionAction.All"/> — this only narrows,
+    /// never grants access to an id that isn't also in those lists.
+    /// </summary>
+    public Dictionary<int, RolePermissionAction> NavItemActions { get; set; } = new();
+    public Dictionary<int, RolePermissionAction> SubNavItemActions { get; set; } = new();
 }
 
-public sealed record RolePermissionsDto(int RoleId, List<int> NavItemIds, List<int> SubNavItemIds);
+public sealed record RolePermissionsDto(
+    int RoleId,
+    List<int> NavItemIds,
+    List<int> SubNavItemIds,
+    Dictionary<int, RolePermissionAction> NavItemActions,
+    Dictionary<int, RolePermissionAction> SubNavItemActions);

Backend/ERPCore/Dtos/Sales/SalesDayEndDtos.cs

@@ -20,19 +20,21 @@ public sealed record SalesDayEndInvoiceSummaryDto(
 public sealed record SalesDayEndDto(
     int SalesDayEndId, string DocNo, int CashierUserId, DateOnly BusinessDate,
     int SlipCount, int BundleCount, decimal Subtotal, decimal DiscountTotal, decimal TaxTotal, decimal GrandTotal,
+    decimal PaidTotal, decimal BalanceTotal,
     decimal CostOfGoodsSold, string? GlJournalNo, DateTime? GlPostedAt, int ClosedBy, DateTime ClosedAt,
     IReadOnlyList<string> SlipNumbers, IReadOnlyList<string> BundleNumbers, IReadOnlyList<SalesDayEndItemLineDto> ItemBreakdown,
     SalesDayEndInvoiceSummaryDto Invoices);
 
 public sealed record SalesDayEndSummaryDto(
     int SalesDayEndId, string DocNo, int CashierUserId, DateOnly BusinessDate,
-    int SlipCount, int BundleCount, decimal GrandTotal, string? GlJournalNo, DateTime ClosedAt);
+    int SlipCount, int BundleCount, decimal GrandTotal, decimal PaidTotal, decimal BalanceTotal, string? GlJournalNo, DateTime ClosedAt);
 
 /// <summary>What closing right now would include — call before <c>POST /sales-day-end</c> so the
 /// cashier can see the day's totals, and any still-Draft slips/bundles blocking the close.</summary>
 public sealed record SalesDayEndPreviewDto(
     int CashierUserId, DateOnly BusinessDate, bool AlreadyClosed,
     int SlipCount, int BundleCount, decimal Subtotal, decimal DiscountTotal, decimal TaxTotal, decimal GrandTotal,
+    decimal PaidTotal, decimal BalanceTotal,
     IReadOnlyList<string> SlipNumbers, IReadOnlyList<string> BundleNumbers,
     IReadOnlyList<DraftSlipBlockingCloseDto> DraftSlipsBlockingClose,
     IReadOnlyList<DraftBundleBlockingCloseDto> DraftBundleSalesBlockingClose,

Backend/ERPCore/Dtos/Sales/SalesInvoiceDtos.cs

@@ -56,7 +56,9 @@ public sealed class CreateSalesInvoiceLineRequest
     [Range(0, 100)] public decimal DiscountPct { get; set; }
     [Range(0, double.MaxValue)] public decimal DiscountAmount { get; set; }
     [Range(0, double.MaxValue)] public decimal DiscountValue { get; set; }
-    [Range(0, 100)] public decimal TaxPct { get; set; }
+    /// <summary>Explicit override. Omit (null) to use the item's assigned TaxRate — see
+    /// <see cref="Services.Interfaces.ISalesDomainService.ResolveLineTaxPctAsync"/>.</summary>
+    [Range(0, 100)] public decimal? TaxPct { get; set; }
     public bool IsFreeIssue { get; set; }
     public int? ParentLineId { get; set; }
 }

Backend/ERPCore/Dtos/Sales/SalesSlipDtos.cs

@@ -7,7 +7,8 @@ public sealed record SalesSlipLineDto(
     int SalesSlipLineId, int ItemId, string Description, decimal Qty, decimal FreeQty,
     int WarehouseId, decimal UnitPrice, decimal BaseCost, string PriceSource, decimal DiscountPct,
     decimal DiscountAmount, SalesDiscountMode DiscountMode, decimal NetUnitPrice, decimal LineTotal,
-    decimal TaxPct, decimal TaxAmount, bool IsFreeIssue, int? ParentLineId);
+    decimal TaxPct, decimal TaxAmount, bool IsFreeIssue, int? ParentLineId,
+    int? BatchId, int? SerialId);
 
 public sealed record SalesSlipTotalsDto(
     decimal Subtotal, decimal DiscountTotal, decimal FreeQtyTotal, decimal TaxTotal, decimal GrandTotal,
@@ -54,9 +55,15 @@ public sealed class CreateSalesSlipLineRequest
     [Range(0, 100)] public decimal DiscountPct { get; set; }
     [Range(0, double.MaxValue)] public decimal DiscountAmount { get; set; }
     [Range(0, double.MaxValue)] public decimal DiscountValue { get; set; }
-    [Range(0, 100)] public decimal TaxPct { get; set; }
+    /// <summary>Explicit override. Omit (null) to use the item's assigned TaxRate — see
+    /// <see cref="Services.Interfaces.ISalesDomainService.ResolveLineTaxPctAsync"/>.</summary>
+    [Range(0, 100)] public decimal? TaxPct { get; set; }
     public bool IsFreeIssue { get; set; }
     public int? ParentLineId { get; set; }
+    /// <summary>Pins the line to a specific batch (must belong to <see cref="ItemId"/>), consumed via FIFO.</summary>
+    public int? BatchId { get; set; }
+    /// <summary>Pins the line to a specific serial (must belong to <see cref="ItemId"/>); marked Sold on posting.</summary>
+    public int? SerialId { get; set; }
 }
 
 public sealed class CreateSalesSlipRequest
@@ -65,6 +72,16 @@ public sealed class CreateSalesSlipRequest
     [Required] public int WarehouseId { get; set; }
     [Required] public int CashierUserId { get; set; }
     [Required, MinLength(1)] public List<CreateSalesSlipLineRequest> Lines { get; set; } = new();
+
+    /// <summary>
+    /// How much the customer actually paid at ring-up. Omit (or send null) for the default —
+    /// fully paid, i.e. <c>PaidAmount == GrandTotal</c> and <c>BalanceAmount == 0</c> — matching
+    /// every slip's behavior before partial payment existed. Must be between 0 and the computed
+    /// GrandTotal; anything less than GrandTotal leaves the difference as BalanceAmount owed by
+    /// the customer "on account," which Sales Day-End then splits between Cash and Accounts
+    /// Receivable when it posts (see SalesDayEndService.CloseAsync).
+    /// </summary>
+    [Range(0, double.MaxValue)] public decimal? PaidAmount { get; set; }
 }
 
 public sealed class UpdateSalesSlipRequest
@@ -73,4 +90,7 @@ public sealed class UpdateSalesSlipRequest
     [Required] public int WarehouseId { get; set; }
     [Required] public int CashierUserId { get; set; }
     [Required, MinLength(1)] public List<CreateSalesSlipLineRequest> Lines { get; set; } = new();
+
+    /// <summary>See <see cref="CreateSalesSlipRequest.PaidAmount"/>.</summary>
+    [Range(0, double.MaxValue)] public decimal? PaidAmount { get; set; }
 }

Backend/ERPCore/Dtos/Search/GlobalSearchDtos.cs

@@ -0,0 +1,16 @@
+namespace ERPCore.Dtos.Search;
+
+public enum GlobalSearchResultType
+{
+    Item,
+    PurchaseOrder,
+    Invoice,
+    Employee
+}
+
+public sealed record GlobalSearchResultDto(
+    GlobalSearchResultType Type,
+    int Id,
+    string Number,
+    string Title,
+    string? Subtitle);

Backend/ERPCore/Dtos/Stock/CountDtos.cs

@@ -5,7 +5,9 @@ namespace ERPCore.Dtos.Stock;
 
 // Responses (docs/11 §5.6) ------------------------------------------------------
 
-public sealed record CountLineDto(int CountLineId, int ItemId, int? BinId, decimal SystemQty, decimal? CountedQty, decimal? Variance);
+public sealed record CountLineDto(
+    int CountLineId, int ItemId, int? BinId, decimal SystemQty, decimal? CountedQty, decimal? Variance,
+    int? BatchId, string? BatchNo, int? SerialId, string? SerialNo);
 
 public sealed record CountDto(
     int CountId, string DocNo, int WarehouseId, int BranchId, CountType CountType, CountStatus Status,

Backend/ERPCore/Dtos/Support/SupportTicketDtos.cs

@@ -0,0 +1,56 @@
+using System.ComponentModel.DataAnnotations;
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Dtos.Support;
+
+public sealed class CreateSupportTicketRequest
+{
+    [Required, MaxLength(200)]
+    public string Subject { get; set; } = string.Empty;
+
+    [Required, MaxLength(2000)]
+    public string Message { get; set; } = string.Empty;
+}
+
+public sealed class AddSupportTicketMessageRequest
+{
+    [Required, MaxLength(2000)]
+    public string Message { get; set; } = string.Empty;
+}
+
+public sealed class UpdateSupportTicketStatusRequest
+{
+    [Required]
+    public TicketStatus Status { get; set; }
+}
+
+public sealed record SupportTicketMessageDto(
+    int MessageId,
+    int SenderUserId,
+    string SenderName,
+    bool IsFromAdmin,
+    string Message,
+    DateTime CreatedAt);
+
+public sealed record SupportTicketSummaryDto(
+    int TicketId,
+    string Subject,
+    TicketStatus Status,
+    int CreatedBy,
+    string CreatedByName,
+    DateTime CreatedAt,
+    int? UpdatedBy,
+    DateTime? UpdatedAt,
+    int MessageCount);
+
+public sealed record SupportTicketDto(
+    int TicketId,
+    string Subject,
+    TicketStatus Status,
+    int CreatedBy,
+    string CreatedByName,
+    DateTime CreatedAt,
+    int? UpdatedBy,
+    string? UpdatedByName,
+    DateTime? UpdatedAt,
+    IReadOnlyList<SupportTicketMessageDto> Messages);

Backend/ERPCore/Dtos/TaxRates/TaxRateDtos.cs

@@ -0,0 +1,26 @@
+using System.ComponentModel.DataAnnotations;
+using ERPCore.Domain.Enums;
+
+namespace ERPCore.Dtos.TaxRates;
+
+public sealed record TaxRateDto(
+    int TaxRateId, string Code, string Name, decimal Percentage, EntityStatus Status, DateTime CreatedAt, DateTime? UpdatedAt);
+
+public sealed class CreateTaxRateRequest
+{
+    [Required, StringLength(20)] public string Code { get; set; } = string.Empty;
+    [Required, StringLength(100)] public string Name { get; set; } = string.Empty;
+    [Range(0, 100)] public decimal Percentage { get; set; }
+}
+
+public sealed class UpdateTaxRateRequest
+{
+    [Required, StringLength(20)] public string Code { get; set; } = string.Empty;
+    [Required, StringLength(100)] public string Name { get; set; } = string.Empty;
+    [Range(0, 100)] public decimal Percentage { get; set; }
+}
+
+public sealed class UpdateTaxRateStatusRequest
+{
+    [Required, EnumDataType(typeof(EntityStatus))] public EntityStatus Status { get; set; }
+}

Backend/ERPCore/Dtos/Uoms/UomDtos.cs

@@ -1,11 +1,17 @@
 using System.ComponentModel.DataAnnotations;
+using ERPCore.Domain.Enums;
 
 namespace ERPCore.Dtos.Uoms;
 
 /// <summary>UOM resource (docs/11-BACKEND-PHASE1.md §2.2).</summary>
-public sealed record UomDto(int UomId, string Name);
+public sealed record UomDto(int UomId, string Name, EntityStatus Status, DateTime CreatedAt, DateTime? UpdatedAt);
 
 public sealed class CreateUomRequest
 {
     [Required, StringLength(50)] public string Name { get; set; } = string.Empty;
 }
+
+public sealed class UpdateUomStatusRequest
+{
+    [Required, EnumDataType(typeof(EntityStatus))] public EntityStatus Status { get; set; }
+}

Backend/ERPCore/Dtos/Users/UserDtos.cs

@@ -7,6 +7,15 @@ public sealed record ManagedUserDto(
     int UserId, string Username, string DisplayName, string? Email, EntityStatus Status,
     int? RoleId, string? RoleCode, string? RoleName);
 
+/// <summary>At least one identifier must be supplied — matches AuthHex's own OR-across-fields dedupe.</summary>
+public sealed class PurgeAuthHexIdentityRequest
+{
+    public string? Email { get; set; }
+    public string? MobileNumber { get; set; }
+    public string? Nic { get; set; }
+    public string? UserName { get; set; }
+}
+
 /// <summary>
 /// Creates a user in both backends: forwards to AuthHex's `registerUser` (source
 /// of truth for credentials), then mirrors the account into ERPCore's local

Backend/ERPCore/Dtos/Vendors/VendorDtos.cs

@@ -6,7 +6,7 @@ namespace ERPCore.Dtos.Vendors;
 /// <summary>Vendor resource (docs/11-BACKEND-PHASE1.md §2.4).</summary>
 public sealed record VendorDto(
     int VendorId, string Code, string Name, string? Terms, string? TaxReg,
-    string Currency, EntityStatus Status, DateTime CreatedAt, DateTime? UpdatedAt);
+    string Currency, EntityStatus Status, int BranchId, DateTime CreatedAt, DateTime? UpdatedAt);
 
 public sealed class CreateVendorRequest
 {
@@ -15,6 +15,9 @@ public sealed class CreateVendorRequest
     [StringLength(50)] public string? Terms { get; set; }
     [StringLength(50)] public string? TaxReg { get; set; }
     [Required, StringLength(3, MinimumLength = 3)] public string Currency { get; set; } = "LKR";
+    /// <summary>Optional — resolved via <see cref="Services.Interfaces.IBranchConfigService.ResolveBranchIdAsync"/>
+    /// when branching is enabled; ignored (defaulted) otherwise.</summary>
+    public int BranchId { get; set; }
 }
 
 public sealed class UpdateVendorRequest
@@ -24,6 +27,7 @@ public sealed class UpdateVendorRequest
     [StringLength(50)] public string? Terms { get; set; }
     [StringLength(50)] public string? TaxReg { get; set; }
     [Required, StringLength(3, MinimumLength = 3)] public string Currency { get; set; } = "LKR";
+    public int BranchId { get; set; }
 }
 
 public sealed class UpdateVendorStatusRequest

Backend/ERPCore/Dtos/Warehouses/WarehouseDtos.cs

@@ -5,7 +5,7 @@ namespace ERPCore.Dtos.Warehouses;
 /// <summary>Warehouse resource (docs/11-BACKEND-PHASE1.md §2.5). <see cref="BranchId"/> is
 /// the anchor `docs/BRANCH_ISOLATION_PLAN.md` uses to branch-scope everything that carries
 /// a `warehouseId` (Sales, GRN, stock, ...) without a column on every one of those entities.</summary>
-public sealed record WarehouseDto(int WarehouseId, string Code, string Name, int BranchId, string? BranchName);
+public sealed record WarehouseDto(int WarehouseId, string Code, string Name, string? Address, string? Phone, int BranchId, string? BranchName);
 
 /// <summary>Bin/location resource (docs/11 §2.5).</summary>
 public sealed record BinDto(int BinId, int WarehouseId, string Code, string? BinType);
@@ -14,6 +14,17 @@ public sealed class CreateWarehouseRequest
 {
     [Required, StringLength(50)] public string Code { get; set; } = string.Empty;
     [Required, StringLength(200)] public string Name { get; set; } = string.Empty;
+    [StringLength(300)] public string? Address { get; set; }
+    [StringLength(30)] public string? Phone { get; set; }
+    [Required] public int BranchId { get; set; }
+}
+
+public sealed class UpdateWarehouseRequest
+{
+    [Required, StringLength(50)] public string Code { get; set; } = string.Empty;
+    [Required, StringLength(200)] public string Name { get; set; } = string.Empty;
+    [StringLength(300)] public string? Address { get; set; }
+    [StringLength(30)] public string? Phone { get; set; }
     [Required] public int BranchId { get; set; }
 }
 

Backend/ERPCore/ERPCore.csproj

@@ -1,9 +1,10 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>48915044-7652-476f-ac84-0c82c718098a</UserSecretsId>
   </PropertyGroup>
 
   <ItemGroup>

Backend/ERPCore/Infra/Auth/AuthHex/AuthHexClient.cs

@@ -28,8 +28,13 @@ public sealed class AuthHexClient : IAuthHexClient
     };
 
     private readonly HttpClient _http;
+    private readonly IConfiguration _config;
 
-    public AuthHexClient(HttpClient http) => _http = http;
+    public AuthHexClient(HttpClient http, IConfiguration config)
+    {
+        _http = http;
+        _config = config;
+    }
 
     // ---- UserManager --------------------------------------------------
 
@@ -87,6 +92,19 @@ public sealed class AuthHexClient : IAuthHexClient
     public Task<TwoFaStatusResponse> GetTwoFaStatusAsync(string bearerToken, CancellationToken ct)
         => CallAsync<TwoFaStatusResponse>("user", "getTwoFAStatus", new { }, bearerToken, ct);
 
+    public Task<DeleteAuthHexUserResult> DeleteUserAsync(string? email, string? mobileNumber, string? nic, string? username, CancellationToken ct)
+    {
+        var adminApiKey = _config["AuthHex:AdminApiKey"];
+        if (string.IsNullOrEmpty(adminApiKey))
+            throw new DomainException(ErrorCodes.AuthUpstreamError, "AuthHex:AdminApiKey is not configured — cannot call the admin deleteUser function.", 500);
+
+        return CallAsync<DeleteAuthHexUserResult>(
+            "user", "deleteUser",
+            new { email, mobileNumber, nic, userName = username },
+            null, ct,
+            extraHeaders: new Dictionary<string, string> { ["X-Admin-Api-Key"] = adminApiKey });
+    }
+
     // ---- RecoveryManager ------------------------------------------------
 
     public Task<ForgotPasswordResponse> ForgotPasswordAsync(ForgotPasswordRequest request, CancellationToken ct)
@@ -134,11 +152,14 @@ public sealed class AuthHexClient : IAuthHexClient
     private async Task CallVoidAsync(string routeGroup, string functionName, object payload, string? bearerToken, CancellationToken ct)
         => await CallAsync<JsonElement?>(routeGroup, functionName, payload, bearerToken, ct);
 
-    private async Task<T> CallAsync<T>(string routeGroup, string functionName, object payload, string? bearerToken, CancellationToken ct)
+    private async Task<T> CallAsync<T>(string routeGroup, string functionName, object payload, string? bearerToken, CancellationToken ct, Dictionary<string, string>? extraHeaders = null)
     {
         using var httpRequest = new HttpRequestMessage(HttpMethod.Post, $"/api/{routeGroup}");
         if (!string.IsNullOrEmpty(bearerToken))
             httpRequest.Headers.Authorization = new AuthenticationHeaderValue("Bearer", bearerToken);
+        if (extraHeaders is not null)
+            foreach (var (key, value) in extraHeaders)
+                httpRequest.Headers.Add(key, value);
 
         httpRequest.Content = JsonContent.Create(
             new AuthHexRequestBody { FunctionName = functionName, Payload = payload, Reference = string.Empty },

Backend/ERPCore/Infra/Auth/AuthHex/IAuthHexClient.cs

@@ -30,6 +30,14 @@ public interface IAuthHexClient
     Task DisableTwoFaAsync(DisableTwoFaRequest request, string bearerToken, CancellationToken ct);
     Task<TwoFaStatusResponse> GetTwoFaStatusAsync(string bearerToken, CancellationToken ct);
 
+    /// <summary>
+    /// Admin-only: permanently deletes every AuthHex identity matching any of the given
+    /// identifiers, so a stale email/NIC/username/mobile no longer blocks re-registration
+    /// (CanRegisterUser's duplicate check has no notion of "deleted" — this is the only way
+    /// to actually clear one). Gated by AuthHex:AdminApiKey — throws if unset or rejected.
+    /// </summary>
+    Task<DeleteAuthHexUserResult> DeleteUserAsync(string? email, string? mobileNumber, string? nic, string? username, CancellationToken ct);
+
     // RecoveryManager (POST /api/recovery)
     Task<ForgotPasswordResponse> ForgotPasswordAsync(ForgotPasswordRequest request, CancellationToken ct);
     Task<VerifyRecoveryOtpResponse> VerifyRecoveryOtpAsync(VerifyRecoveryOtpRequest request, CancellationToken ct);

Backend/ERPCore/Infra/Auth/AuthHexClaims.cs

@@ -14,4 +14,12 @@ public static class AuthHexClaims
     public const string RoleId = "RoleId";
     public const string RoleCode = "RoleCode";
     public const string Nic = "NIC";
+
+    /// <summary>
+    /// Local (non-AuthHex) claim injected by <see cref="ShadowUserClaimsTransformation"/> —
+    /// the resolved local user's <see cref="Entities.Employee.BranchId"/>, used by
+    /// <see cref="ICurrentUser.BranchId"/>/<see cref="ICurrentBranchContext"/> for
+    /// branch-scoped query filtering (docs/BRANCH_ISOLATION_PLAN.md).
+    /// </summary>
+    public const string BranchId = "erp:BranchId";
 }

Backend/ERPCore/Infra/Auth/CurrentUser.cs

@@ -35,4 +35,13 @@ public sealed class CurrentUser : ICurrentUser
     public string? RoleCode => _accessor.HttpContext?.User?.FindFirstValue(AuthHexClaims.RoleCode);
 
     public bool IsAdmin => string.Equals(RoleCode?.Trim(), "Admin", StringComparison.OrdinalIgnoreCase);
+
+    public int? BranchId
+    {
+        get
+        {
+            var raw = _accessor.HttpContext?.User?.FindFirstValue(AuthHexClaims.BranchId);
+            return int.TryParse(raw, out var id) ? id : null;
+        }
+    }
 }