fix: filter valid references in buildFinalResult and repairMarkdownFootnotesOuter

src/app.ts

@@ -592,7 +592,7 @@ app.post('/v1/chat/completions', (async (req: Request, res: Response) => {
     )
     let finalAnswer = (finalStep as AnswerAction).mdAnswer;
 
-    const annotations = (finalStep as AnswerAction).references?.map(ref => ({
+    const annotations = (finalStep as AnswerAction).references.filter(ref => ref?.url && ref?.title && ref?.exactQuote && ref?.dateTime).map(ref => ({
       type: 'url_citation' as const,
       url_citation: {
         title: ref.title,

src/tools/build-ref.ts

@@ -290,10 +290,10 @@ function buildFinalResult(
   chunkToSourceMap: any
 ): { answer: string, references: Array<Reference> } {
   logDebug(`[buildFinalResult] Building final result with ${filteredMatches.length} references`);
-
   // Build reference objects
-  const references: Reference[] = filteredMatches.map((match) => {
+  const references = filteredMatches.map((match) => {
     const source = chunkToSourceMap[match.webChunkIndex];
+    if (!source.text || !source.url || !source.title) return null;
     return {
       exactQuote: source.text,
       url: source.url,
@@ -303,7 +303,7 @@ function buildFinalResult(
       answerChunk: match.answerChunk,
       answerChunkPosition: match.answerChunkPosition
     };
-  });
+  }).filter(Boolean) as Reference[];
 
   // Inject reference markers ([^1], [^2], etc.) into the answer
   let modifiedAnswer = answer;

src/utils/text-tools.ts

@@ -223,11 +223,13 @@ export function repairMarkdownFootnotesOuter(markdownString: string): string {
     }
 
     // Add to references array
-    references.push({
-      exactQuote: content,
-      url,
-      title
-    });
+    if (content && title && url) {
+      references.push({
+        exactQuote: content,
+        url,
+        title,
+      });
+    }
   }
 
   // Only process if we found valid references