fix(extensions): preserve symlinks in extension source path while enforcing folder trust (#20867)

packages/a2a-server/src/agent/task.ts

@@ -28,6 +28,9 @@ import {
   type Config,
   type UserTierId,
   type ToolLiveOutput,
+  type AnsiLine,
+  type AnsiOutput,
+  type AnsiToken,
   isSubagentProgress,
   EDIT_TOOL_NAMES,
   processRestorableToolCalls,
@@ -344,10 +347,15 @@ export class Task {
       outputAsText = outputChunk;
     } else if (isSubagentProgress(outputChunk)) {
       outputAsText = JSON.stringify(outputChunk);
-    } else {
-      outputAsText = outputChunk
-        .map((line) => line.map((token) => token.text).join(''))
+    } else if (Array.isArray(outputChunk)) {
+      const ansiOutput: AnsiOutput = outputChunk;
+      outputAsText = ansiOutput
+        .map((line: AnsiLine) =>
+          line.map((token: AnsiToken) => token.text).join(''),
+        )
         .join('\n');
+    } else {
+      outputAsText = String(outputChunk);
     }
 
     logger.info(