fix: improve error handling and path processing in memory discovery (#5175)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: Allen Hutchison <adh@google.com>

packages/core/src/utils/memoryDiscovery.ts

@@ -336,5 +336,8 @@ export async function loadServerHierarchicalMemory(
     logger.debug(
       `Combined instructions (snippet): ${combinedInstructions.substring(0, 500)}...`,
     );
-  return { memoryContent: combinedInstructions, fileCount: filePaths.length };
+  return {
+    memoryContent: combinedInstructions,
+    fileCount: contentsWithPaths.length,
+  };
 }