Add SobanleClient.createAutoOrder orchestration

Orchestrates product selection via productComboPicker and sale creation,
failing gracefully if no product combo matches the target amount.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017KPzWwuTEeX2vXGXvyGn4q

app/libs/SobanleClient.js

 "use strict";
 var config = require(__config_path + "/config");
 var ApiRequest = require("./ApiRequest");
+var pickProductCombo = require("./productComboPicker").pickProductCombo;
 
 var tokenCache = { token: null, expiresAt: 0 };
 
@@ -125,3 +126,17 @@ function changeSaleStatus(orderId, callback) {
   });
 }
 exports.changeSaleStatus = changeSaleStatus;
+
+function createAutoOrder(customerData, targetAmount, callback) {
+  exports.getProducts(function (err, products) {
+    if (err) {
+      return callback(err);
+    }
+    var combo = pickProductCombo(products, targetAmount, {});
+    if (!combo) {
+      return callback(new Error("NO_PRODUCT_COMBO_MATCH"));
+    }
+    exports.createSale(combo.lines, customerData, callback);
+  });
+}
+exports.createAutoOrder = createAutoOrder;