Add article.setPricesBySku to replace POS prices for a SKU.

Gives dashback a single store call that atomically replaces all price rows for the article’s poscustomergroup.

scripts/test-api.js

@@ -120,6 +120,11 @@ const MENU = {
         label: 'updateBySku',
         hint: 'googleAuthId, sku, name → row',
       },
+      {
+        value: 'article.setPricesBySku',
+        label: 'setPricesBySku',
+        hint: 'googleAuthId, sku, JSON prices → row',
+      },
       {
         value: 'article.addImage',
         label: 'addImage',
@@ -456,6 +461,35 @@ async function runMethod(client, action) {
         await client.article.updateBySku(Number(googleAuthId), sku, { name }),
       ];
     }
+    case 'article.setPricesBySku': {
+      const googleAuthId = await askInt('google_auth id');
+      if (googleAuthId == null) return;
+      const sku = await askText('sku', {
+        validate: (v) => (!v?.trim() ? 'Required' : undefined),
+      });
+      if (sku == null) return;
+      const pricesJson = await askText('prices JSON', {
+        placeholder: '[{"price":9.99,"tax":19}]',
+        validate: (v) => {
+          if (!v?.trim()) return 'Required';
+          try {
+            const parsed = JSON.parse(v);
+            if (!Array.isArray(parsed)) return 'Must be a JSON array';
+          } catch {
+            return 'Invalid JSON';
+          }
+        },
+      });
+      if (pricesJson == null) return;
+      return [
+        'result',
+        await client.article.setPricesBySku(
+          Number(googleAuthId),
+          sku,
+          JSON.parse(pricesJson),
+        ),
+      ];
+    }
     case 'article.addImage': {
       const googleAuthId = await askInt('google_auth id');
       if (googleAuthId == null) return;