fix(coding-agent/modes): added checks to skip writing error messages to

- Added checks to skip writing error messages to stderr when stopReason is 'error' or 'aborted', as these cases already handle error output separately.
- This prevents duplicate error reporting in print mode when the assistant encounters terminal error conditions.

packages/coding-agent/src/modes/print-mode.ts

@@ -161,7 +161,11 @@ export async function runPrintMode(session: AgentSession, options: PrintModeOpti
 				}
 			}
 
-			if (assistantMsg.errorMessage) {
+			if (
+				assistantMsg.errorMessage &&
+				assistantMsg.stopReason !== "error" &&
+				assistantMsg.stopReason !== "aborted"
+			) {
 				process.stderr.write(`${sanitizeText(assistantMsg.errorMessage)}\n`);
 			}