Add Torob Product API v3 for store-module sites with a store setting to enable it.

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/website-api/index.html

@@ -118,6 +118,17 @@
       There is no public <code>product-category-variation-fields</code> route.
     </p>
 
+    <h2>Torob (price comparison)</h2>
+    <p>
+      <code>POST /tenants/{domain}/torob_api/v3/products</code> is for
+      <strong>Torob</strong>, not storefront JavaScript. On the live shop,
+      nginx proxies <code>POST https://{domain}/torob_api/v3/products</code>
+      to that API. It only returns catalog store items when the business has
+      the <strong>store</strong> module enabled <em>and</em> Store settings →
+      Torob is on; otherwise 404.
+      Do not implement this path in Next.js.
+    </p>
+
     <h2>For a new website AI / designer</h2>
     <ol>
       <li>Open <a href="/docs/website/AI_PROMPT.md">AI_PROMPT.md</a> and paste it into the AI chat.</li>