feat(app): address review

drizzle/meta/0002_snapshot.json

@@ -28,8 +28,8 @@
           "notNull": true,
           "autoincrement": false
         },
-        "focusMode": {
-          "name": "focusMode",
+        "sources": {
+          "name": "sources",
           "type": "text",
           "primaryKey": false,
           "notNull": true,

src/lib/agents/search/widgets/calculationWidget.ts

@@ -51,6 +51,10 @@ const calculationWidget: Widget = {
       schema,
     });
 
+    if (output.notPresent) {
+      return;
+    }
+
     const result = mathEval(output.expression);
 
     return {