[VSCE-157] Allow Link Formatting via Markdown in System Errors

codex-rs/exec/src/event_processor_with_human_output.rs

@@ -157,7 +157,7 @@ impl EventProcessor for EventProcessorWithHumanOutput {
     fn process_event(&mut self, event: Event) -> CodexStatus {
         let Event { id: _, msg } = event;
         match msg {
-            EventMsg::Error(ErrorEvent { message }) => {
+            EventMsg::Error(ErrorEvent { message, .. }) => {
                 let prefix = "ERROR:".style(self.red);
                 ts_msg!(self, "{prefix} {message}");
             }

codex-rs/exec/tests/event_processor_with_json_output.rs

@@ -434,6 +434,7 @@ fn error_event_produces_error() {
         "e1",
         EventMsg::Error(codex_core::protocol::ErrorEvent {
             message: "boom".to_string(),
+            markdown_message: None,
         }),
     ));
     assert_eq!(
@@ -469,6 +470,7 @@ fn error_followed_by_task_complete_produces_turn_failed() {
         "e1",
         EventMsg::Error(ErrorEvent {
             message: "boom".to_string(),
+            markdown_message: None,
         }),
     );
     assert_eq!(