Add TaxRate to cart and menu API responses

- getCart.cfm: Include TaxRate from Businesses table
- getOrCreateCart.cfm: Include TaxRate from Businesses table
- items.cfm: Include TaxRate in menu response for cart calculation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

api/menu/items.cfm

@@ -529,16 +529,22 @@
     </cfloop>
   </cfif>
 
-  <!--- Get brand color for this business --->
+  <!--- Get brand color and tax rate for this business --->
   <cfset brandColor = "">
+  <cfset businessTaxRate = 0>
   <cftry>
     <cfset qBrand = queryTimed(
-      "SELECT BrandColor AS BusinessBrandColor FROM Businesses WHERE ID = ?",
+      "SELECT BrandColor AS BusinessBrandColor, TaxRate FROM Businesses WHERE ID = ?",
       [ { value = BusinessID, cfsqltype = "cf_sql_integer" } ],
       { datasource = "payfrit" }
     )>
-    <cfif qBrand.recordCount GT 0 AND len(trim(qBrand.BusinessBrandColor))>
+    <cfif qBrand.recordCount GT 0>
-      <cfset brandColor = left(qBrand.BusinessBrandColor, 1) EQ chr(35) ? qBrand.BusinessBrandColor : chr(35) & qBrand.BusinessBrandColor>
+      <cfif len(trim(qBrand.BusinessBrandColor))>
+        <cfset brandColor = left(qBrand.BusinessBrandColor, 1) EQ chr(35) ? qBrand.BusinessBrandColor : chr(35) & qBrand.BusinessBrandColor>
+      </cfif>
+      <cfif isNumeric(qBrand.TaxRate)>
+        <cfset businessTaxRate = qBrand.TaxRate>
+      </cfif>
     </cfif>
     <cfcatch>
       <!--- Column may not exist yet, ignore --->
@@ -552,6 +558,7 @@
     "COUNT": arrayLen(rows),
     "SCHEMA": newSchemaActive ? "unified" : "legacy",
     "BRANDCOLOR": brandColor,
+    "TAXRATE": val(businessTaxRate),
     "Menus": menuList,
     "SelectedMenuID": requestedMenuID
   })>

api/orders/getCart.cfm

@@ -67,11 +67,12 @@
 
   <!--- Get business info for display in cart --->
   <cfset qBusiness = queryTimed(
-    "SELECT DeliveryFlatFee, OrderTypes FROM Businesses WHERE ID = ? LIMIT 1",
+    "SELECT DeliveryFlatFee, OrderTypes, TaxRate FROM Businesses WHERE ID = ? LIMIT 1",
     [ { value = qOrder.BusinessID, cfsqltype = "cf_sql_integer" } ],
     { datasource = "payfrit" }
   )>
   <cfset businessDeliveryFee = qBusiness.recordCount GT 0 ? qBusiness.DeliveryFlatFee : 0>
+  <cfset businessTaxRate = qBusiness.recordCount GT 0 AND isNumeric(qBusiness.TaxRate) ? qBusiness.TaxRate : 0>
   <cfset businessOrderTypes = qBusiness.recordCount GT 0 AND len(trim(qBusiness.OrderTypes)) ? qBusiness.OrderTypes : "1,2,3">
   <cfset businessOrderTypesArray = listToArray(businessOrderTypes, ",")>
 
@@ -134,6 +135,7 @@
       "OrderTypeID": val(qOrder.OrderTypeID),
       "DeliveryFee": val(qOrder.DeliveryFee),
       "BusinessDeliveryFee": val(businessDeliveryFee),
+      "TaxRate": val(businessTaxRate),
       "OrderTypes": businessOrderTypesArray,
       "StatusID": val(qOrder.StatusID),
       "AddressID": val(qOrder.AddressID),

api/orders/getOrCreateCart.cfm

@@ -64,13 +64,14 @@
     <cfreturn { "OK": false, "ERROR": "not_found", "MESSAGE": "Order not found", "DETAIL": "" }>
   </cfif>
 
-  <!--- Get business delivery fee for display in cart --->
+  <!--- Get business delivery fee and tax rate for display in cart --->
   <cfset var qBusiness = queryTimed(
-    "SELECT DeliveryFlatFee FROM Businesses WHERE ID = ? LIMIT 1",
+    "SELECT DeliveryFlatFee, TaxRate FROM Businesses WHERE ID = ? LIMIT 1",
     [ { value = qOrder.BusinessID, cfsqltype = "cf_sql_integer" } ],
     { datasource = "payfrit" }
   )>
   <cfset var businessDeliveryFee = qBusiness.recordCount GT 0 ? qBusiness.DeliveryFlatFee : 0>
+  <cfset var businessTaxRate = qBusiness.recordCount GT 0 AND isNumeric(qBusiness.TaxRate) ? qBusiness.TaxRate : 0>
 
   <cfset out.Order = {
     "OrderID": val(qOrder.ID),
@@ -81,6 +82,7 @@
     "OrderTypeID": val(qOrder.OrderTypeID),
     "DeliveryFee": val(qOrder.DeliveryFee),
     "BusinessDeliveryFee": val(businessDeliveryFee),
+    "TaxRate": val(businessTaxRate),
     "StatusID": val(qOrder.StatusID),
     "AddressID": val(qOrder.AddressID),
     "PaymentID": val(qOrder.PaymentID),