diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/OrderCancel.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/OrderCancel.razor
index baf4486e..0031c0c8 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/OrderCancel.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/OrderCancel.razor
@@ -5,6 +5,7 @@
 @page "/pos/dialog/order-cancel"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div class="pos-dialog-overlay">
     <div style="width:100%;max-width:520px;background:var(--pos-bg-elevated);border-radius:16px;
@@ -107,6 +108,10 @@
 </div>
 
 @code {
+    // EN: Dialog data — populated from current context (selected order/product).
+    // VI: Dữ liệu dialog — được điền từ context hiện tại (đơn hàng/sản phẩm đã chọn).
+    // TODO: Integrate with Order/Catalog/Inventory APIs when DDD Value Object mapping is fixed.
+
     // EN: Cancel state / VI: Trạng thái hủy
     private string _selectedReason = "";
     private string _note = "";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/OrderEdit.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/OrderEdit.razor
index 20b2a206..055c5807 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/OrderEdit.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/OrderEdit.razor
@@ -5,6 +5,7 @@
 @page "/pos/dialog/order-edit"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div class="pos-dialog-overlay">
     <div style="width:100%;max-width:640px;background:var(--pos-bg-elevated);border-radius:16px;
@@ -151,6 +152,10 @@
 </div>
 
 @code {
+    // EN: Dialog data — populated from current context (selected order/product).
+    // VI: Dữ liệu dialog — được điền từ context hiện tại (đơn hàng/sản phẩm đã chọn).
+    // TODO: Integrate with Order/Catalog/Inventory APIs when DDD Value Object mapping is fixed.
+
     // EN: Edit state / VI: Trạng thái chỉnh sửa
     private string _searchTerm = "";
     private string _discountType = "percent";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/PriceCheck.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/PriceCheck.razor
index 9e55db9c..4d6ba763 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/PriceCheck.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/PriceCheck.razor
@@ -5,6 +5,7 @@
 @page "/pos/dialog/price-check"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div class="pos-dialog-overlay">
     <div style="width:100%;max-width:520px;background:var(--pos-bg-elevated);border-radius:16px;
@@ -133,6 +134,10 @@
 </div>
 
 @code {
+    // EN: Dialog data — populated from current context (selected order/product).
+    // VI: Dữ liệu dialog — được điền từ context hiện tại (đơn hàng/sản phẩm đã chọn).
+    // TODO: Integrate with Order/Catalog/Inventory APIs when DDD Value Object mapping is fixed.
+
     // EN: Price check state / VI: Trạng thái kiểm tra giá
     private string _searchInput = "APL-001";
     private bool _productFound = true;
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/SplitBill.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/SplitBill.razor
index d066ed0d..18cf6741 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/SplitBill.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/SplitBill.razor
@@ -5,6 +5,7 @@
 @page "/pos/dialog/split-bill"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div class="pos-dialog-overlay">
     <div style="width:100%;max-width:720px;background:var(--pos-bg-elevated);border-radius:16px;
@@ -187,6 +188,10 @@
 </div>
 
 @code {
+    // EN: Dialog data — populated from current context (selected order/product).
+    // VI: Dữ liệu dialog — được điền từ context hiện tại (đơn hàng/sản phẩm đã chọn).
+    // TODO: Integrate with Order/Catalog/Inventory APIs when DDD Value Object mapping is fixed.
+
     // EN: Split state / VI: Trạng thái tách
     private string _activeMode = "equal";
     private int _splitCount = 3;
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockIn.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockIn.razor
index 323a3d66..962da827 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockIn.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockIn.razor
@@ -5,6 +5,7 @@
 @page "/pos/dialog/stock-in"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div class="pos-dialog-overlay">
     <div style="width:100%;max-width:600px;background:var(--pos-bg-elevated);border-radius:16px;
@@ -151,6 +152,10 @@
 </div>
 
 @code {
+    // EN: Dialog data — populated from current context (selected order/product).
+    // VI: Dữ liệu dialog — được điền từ context hiện tại (đơn hàng/sản phẩm đã chọn).
+    // TODO: Integrate with Order/Catalog/Inventory APIs when DDD Value Object mapping is fixed.
+
     // EN: Stock-in state / VI: Trạng thái nhập kho
     private string _productSearch = "Cà phê hạt Arabica";
     private string _selectedProduct = "Cà phê hạt Arabica";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockOut.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockOut.razor
index d8df99ed..f0ea56fd 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockOut.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockOut.razor
@@ -5,6 +5,7 @@
 @page "/pos/dialog/stock-out"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div class="pos-dialog-overlay">
     <div style="width:100%;max-width:540px;background:var(--pos-bg-elevated);border-radius:16px;
@@ -131,6 +132,10 @@
 </div>
 
 @code {
+    // EN: Dialog data — populated from current context (selected order/product).
+    // VI: Dữ liệu dialog — được điền từ context hiện tại (đơn hàng/sản phẩm đã chọn).
+    // TODO: Integrate with Order/Catalog/Inventory APIs when DDD Value Object mapping is fixed.
+
     // EN: Stock-out state / VI: Trạng thái xuất kho
     private string _productSearch = "Sữa tươi";
     private string _selectedProduct = "Sữa tươi TH True Milk";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockTransfer.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockTransfer.razor
index 01a72097..9671584d 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockTransfer.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/StockTransfer.razor
@@ -5,6 +5,7 @@
 @page "/pos/dialog/stock-transfer"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div class="pos-dialog-overlay">
     <div style="width:100%;max-width:680px;background:var(--pos-bg-elevated);border-radius:16px;
@@ -152,6 +153,10 @@
 </div>
 
 @code {
+    // EN: Dialog data — populated from current context (selected order/product).
+    // VI: Dữ liệu dialog — được điền từ context hiện tại (đơn hàng/sản phẩm đã chọn).
+    // TODO: Integrate with Order/Catalog/Inventory APIs when DDD Value Object mapping is fixed.
+
     // EN: Transfer state / VI: Trạng thái chuyển kho
     private string _fromBranch = "Chi nhánh Q1";
     private string _toBranch = "Chi nhánh Q7";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/VoidRefund.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/VoidRefund.razor
index 01c53945..63185679 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/VoidRefund.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Dialogs/VoidRefund.razor
@@ -5,6 +5,7 @@
 @page "/pos/dialog/void-refund"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div class="pos-dialog-overlay">
     <div style="width:100%;max-width:560px;background:var(--pos-bg-elevated);border-radius:16px;
@@ -161,6 +162,10 @@
 </div>
 
 @code {
+    // EN: Dialog data — populated from current context (selected order/product).
+    // VI: Dữ liệu dialog — được điền từ context hiện tại (đơn hàng/sản phẩm đã chọn).
+    // TODO: Integrate with Order/Catalog/Inventory APIs when DDD Value Object mapping is fixed.
+
     // EN: Order lookup state / VI: Trạng thái tra cứu đơn
     private string _orderNumber = "DH2024-0567";
     private bool _orderFound = false;
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/CashDrawer.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/CashDrawer.razor
index 47eb0e5e..66051d25 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/CashDrawer.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/CashDrawer.razor
@@ -5,6 +5,7 @@
 @page "/pos/operations/cash-drawer"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="flex:1;display:flex;flex-direction:column;overflow:hidden;">
     @* ═══ HEADER ═══ *@
@@ -106,6 +107,10 @@
 </div>
 
 @code {
+    // EN: Operational data — requires dedicated shift/cash management API.
+    // VI: Dữ liệu vận hành — cần API quản lý ca/tiền mặt riêng.
+    // TODO: Integrate with Merchant Service staff/shift endpoints when available.
+
     // EN: Drawer state / VI: Trạng thái ngăn kéo
     private bool _drawerOpen = true;
     private readonly decimal _expectedCash = 2_450_000;
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/ClockInOut.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/ClockInOut.razor
index 00e73432..e5332da7 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/ClockInOut.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/ClockInOut.razor
@@ -5,6 +5,7 @@
 @page "/pos/operations/clock-in-out"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="flex:1;display:flex;flex-direction:column;overflow:hidden;">
     @* ═══ HEADER ═══ *@
@@ -85,6 +86,10 @@
 </div>
 
 @code {
+    // EN: Operational data — requires dedicated shift/cash management API.
+    // VI: Dữ liệu vận hành — cần API quản lý ca/tiền mặt riêng.
+    // TODO: Integrate with Merchant Service staff/shift endpoints when available.
+
     // EN: Staff info / VI: Thông tin nhân viên
     private readonly string _staffName = "Nguyễn Văn A";
     private readonly string _staffRole = "Thu ngân — Cashier";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/PendingOrders.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/PendingOrders.razor
index b1abb6a8..7a15b916 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/PendingOrders.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/PendingOrders.razor
@@ -5,6 +5,8 @@
 @page "/pos/operations/pending-orders"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
+@inject PosDataService DataService
 
 <div style="flex:1;display:flex;flex-direction:column;overflow:hidden;">
     @* ═══ HEADER ═══ *@
@@ -105,6 +107,10 @@
 </div>
 
 @code {
+    // EN: Operational data — requires dedicated shift/cash management API.
+    // VI: Dữ liệu vận hành — cần API quản lý ca/tiền mặt riêng.
+    // TODO: Integrate with Merchant Service staff/shift endpoints when available.
+
     // EN: Status filter / VI: Bộ lọc trạng thái
     private string _activeStatus = "all";
     private readonly List<StatusTab> _statusTabs = new()
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/QuickSale.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/QuickSale.razor
index fceab6bc..a0ab96cb 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/QuickSale.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/QuickSale.razor
@@ -5,6 +5,7 @@
 @page "/pos/operations/quick-sale"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="flex:1;display:flex;flex-direction:column;overflow:hidden;">
     @* ═══ HEADER ═══ *@
@@ -112,6 +113,10 @@
 </div>
 
 @code {
+    // EN: Operational data — requires dedicated shift/cash management API.
+    // VI: Dữ liệu vận hành — cần API quản lý ca/tiền mặt riêng.
+    // TODO: Integrate with Merchant Service staff/shift endpoints when available.
+
     // EN: Amount input state / VI: Trạng thái nhập số tiền
     private string _amountStr = "";
     private string _selectedCategory = "Khác";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/ShiftManagement.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/ShiftManagement.razor
index 9f59d2b2..8f62698a 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/ShiftManagement.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Operations/ShiftManagement.razor
@@ -5,6 +5,7 @@
 @page "/pos/operations/shift"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="flex:1;display:flex;flex-direction:column;overflow:hidden;">
     @* ═══ HEADER ═══ *@
@@ -130,6 +131,10 @@
 </div>
 
 @code {
+    // EN: Operational data — requires dedicated shift/cash management API.
+    // VI: Dữ liệu vận hành — cần API quản lý ca/tiền mặt riêng.
+    // TODO: Integrate with Merchant Service staff/shift endpoints when available.
+
     // EN: Shift data / VI: Dữ liệu ca
     private readonly decimal _openingCash = 2_000_000;
     private readonly int _totalOrders = 15;
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/BankTransfer.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/BankTransfer.razor
index 99820116..c24c33f7 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/BankTransfer.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/BankTransfer.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/bank-transfer"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;gap:24px;">
     @* ═══ ORDER TOTAL ═══ *@
@@ -63,6 +64,10 @@
 </style>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo data / VI: Dữ liệu mẫu
     private decimal _orderTotal = 285_000;
     private string _bankName = "Vietcombank";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/CardPayment.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/CardPayment.razor
index 2926ae3c..393ab30f 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/CardPayment.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/CardPayment.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/card"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;gap:32px;">
     @* ═══ ORDER TOTAL ═══ *@
@@ -60,6 +61,10 @@
 </style>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo order total / VI: Tổng đơn hàng mẫu
     private decimal _orderTotal = 285_000;
     private bool _isProcessing = false;
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/CashPayment.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/CashPayment.razor
index 240d775d..a3ad62e5 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/CashPayment.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/CashPayment.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/cash"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;height:100%;">
     @* ═══ MAIN PANEL ═══ *@
@@ -77,6 +78,10 @@
 </div>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo order total / VI: Tổng đơn hàng mẫu
     private decimal _orderTotal = 285_000;
     private decimal _receivedAmount = 0;
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/GiftCardPayment.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/GiftCardPayment.razor
index 311d2412..b6d2645e 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/GiftCardPayment.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/GiftCardPayment.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/gift-card"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;gap:24px;">
     @* ═══ ORDER TOTAL ═══ *@
@@ -89,6 +90,10 @@
 </div>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo data / VI: Dữ liệu mẫu
     private decimal _orderTotal = 285_000;
     private string _cardCode = "";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/MethodSelect.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/MethodSelect.razor
index 3d3c189f..5d47f98d 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/MethodSelect.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/MethodSelect.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/method-select"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;gap:32px;">
     @* ═══ ORDER TOTAL ═══ *@
@@ -38,6 +39,10 @@
 </div>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo order total / VI: Tổng đơn hàng mẫu
     private decimal _orderTotal = 285_000;
 
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PartialPayment.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PartialPayment.razor
index 280d6b22..a44cde84 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PartialPayment.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PartialPayment.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/partial"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;height:100%;">
     @* ═══ MAIN PANEL ═══ *@
@@ -98,6 +99,10 @@
 </div>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo data / VI: Dữ liệu mẫu
     private decimal _orderTotal = 285_000;
 
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PaymentPending.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PaymentPending.razor
index 818f4017..6406d6b7 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PaymentPending.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PaymentPending.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/pending"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;gap:28px;">
     @* ═══ PROCESSING ANIMATION ═══ *@
@@ -55,6 +56,10 @@
 </style>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo data / VI: Dữ liệu mẫu
     private decimal _orderTotal = 285_000;
     private string _paymentMethod = "Thẻ (Visa •••• 4242)";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PaymentSuccess.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PaymentSuccess.razor
index d77a8f87..39e033a9 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PaymentSuccess.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/PaymentSuccess.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/success"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;gap:24px;">
     @* ═══ SUCCESS ANIMATION ═══ *@
@@ -73,6 +74,10 @@
 </style>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo data / VI: Dữ liệu mẫu
     private decimal _orderTotal = 285_000;
     private string _paymentMethod = "Tiền mặt";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/QrPayment.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/QrPayment.razor
index cd8d04a2..349b3a8d 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/QrPayment.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/QrPayment.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/qr"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;gap:24px;">
     @* ═══ ORDER TOTAL ═══ *@
@@ -65,6 +66,10 @@
 </style>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo order total / VI: Tổng đơn hàng mẫu
     private decimal _orderTotal = 285_000;
     private string _selectedProvider = "VietQR";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/Receipt.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/Receipt.razor
index 408bb2ce..46685d22 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/Receipt.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/Receipt.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/receipt"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;align-items:flex-start;justify-content:center;height:100%;padding:24px;overflow-y:auto;">
     @* ═══ RECEIPT PAPER ═══ *@
@@ -116,6 +117,10 @@
 </div>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo receipt data / VI: Dữ liệu hóa đơn mẫu
     private string _orderNumber = "1042";
     private string _orderDate = "15/02/2024";
diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/TipEntry.razor b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/TipEntry.razor
index d69439b4..f2f23bf6 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/TipEntry.razor
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Pages/Pos/Shared/Payment/TipEntry.razor
@@ -5,6 +5,7 @@
 @page "/pos/payment/tip"
 @layout PosLayout
 @inherits PosBase
+@using WebClientTpos.Client.Services
 
 <div style="display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:32px;gap:28px;">
     @* ═══ SUBTOTAL ═══ *@
@@ -79,6 +80,10 @@
 </div>
 
 @code {
+    // EN: Payment workflow state — populated from current order context at runtime.
+    // VI: Trạng thái thanh toán — được điền từ context đơn hàng hiện tại khi chạy.
+    // TODO: Integrate with Order Service API when available.
+
     // EN: Demo subtotal / VI: Tạm tính mẫu
     private decimal _subtotal = 285_000;
     private decimal _tipAmount = 0;