fix frontend invoke result handling

frontend/static-index.html

@@ -95,6 +95,11 @@
       if (!response.ok) throw new Error((data && (data.detail || data.message)) || `request failed: ${response.status}`);
       return data;
     }
+    function unwrapInvokeResponse(payload) {
+      return payload && typeof payload === 'object' && 'result' in payload
+        ? payload.result
+        : payload;
+    }
     function renderSkill() {
       const skill = (config.skills || []).find((item) => item.name === selected);
       skillNameEl.textContent = selected;
@@ -125,9 +130,10 @@
       resultEl.textContent = 'Running…';
       try {
         const args = JSON.parse(argsEl.value || '{}');
-        const data = await requestJson(`${config.endpoints.invoke}/${encodeURIComponent(selected)}`, {
+        const payload = await requestJson(`${config.endpoints.invoke}/${encodeURIComponent(selected)}`, {
           method: 'POST', headers: { 'content-type': 'application/json' }, body: JSON.stringify({ arguments: args })
         });
+        const data = unwrapInvokeResponse(payload);
         resultEl.textContent = JSON.stringify(data, null, 2);
       } catch (err) {
         resultEl.textContent = err.message || String(err);