Include user_facing_reasoning when repairing malformed JSON string by generateObject AI-SDK call (#1544)

Fixes OPS-2950.

---------

Co-authored-by: Copilot <[email protected]>

Author: cezudas

packages/server/api/src/app/ai/mcp/llm-query-router.ts

@@ -211,6 +211,8 @@ const repairText = (text: string): string | null => {
       query_classification:
         findFirstKeyInObject(parsedText, 'query_classification') || [],
       reasoning: findFirstKeyInObject(parsedText, 'reasoning') || '',
+      user_facing_reasoning:
+        findFirstKeyInObject(parsedText, 'user_facing_reasoning') || '',
     });
   } catch (error) {
     return null;

packages/ui-components/src/components/assistant-ui/thread/reasoning-part.tsx

@@ -7,6 +7,10 @@ type ReasoningPartProps = {
 };
 
 export const ReasoningPart: FC<ReasoningPartProps> = ({ text }) => {
+  if (!text) {
+    return null;
+  }
+
   return (
     <div className="my-2">
       <ExpandableContent