fix(11): address code-review findings in catalog inline-edit

- WR-01: remove blur-commit on EditableCell toggle (onChange already saves+closes; prevents double updateServiceField)
- WR-02: skip server action when cell value unchanged (commit + new commitOnBlur dirty-check)
- WR-03: on blur, revert required-empty field via cancel() instead of leaving the cell stuck in error state
- WR-04: normalize it-IT price input (1.234,50) before parse; Number() rejects trailing garbage
- IN-01: render row error in its own <tr> instead of an invalid 7th <td> in a 6-column row

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/components/admin/catalog/ServiceTable.tsx

@@ -34,6 +34,7 @@ function ServiceRow({ service }: { service: ServiceWithTags }) {
   }
 
   return (
+    <>
     <tr
       className={`border-b border-[#e5e7eb] hover:bg-[#f9f9f9] transition-colors duration-150 ${
         !service.active ? "opacity-50" : ""
@@ -85,12 +86,15 @@ function ServiceRow({ service }: { service: ServiceWithTags }) {
           onSave={(v) => saveField("active", v)}
         />
       </td>
-      {error && (
+    </tr>
+    {error && (
+      <tr>
         <td className="py-1 px-3 text-xs text-red-600" colSpan={6}>
           {error}
         </td>
-      )}
-    </tr>
+      </tr>
+    )}
+    </>
   );
 }