feat: message when stream get correctly resumed (#4988)

<img width="366" height="109" alt="Screenshot 2025-10-09 at 17 44 16"
src="https://github.com/user-attachments/assets/26bc6f60-11bc-4fc6-a1cc-430ca1203969"
/>

codex-rs/tui/src/chatwidget/tests.rs

@@ -276,6 +276,8 @@ fn make_chatwidget_manual() -> (
         interrupts: InterruptManager::new(),
         reasoning_buffer: String::new(),
         full_reasoning_buffer: String::new(),
+        current_status_header: String::from("Working"),
+        retry_status_header: None,
         conversation_id: None,
         frame_requester: FrameRequester::test_dummy(),
         show_welcome_banner: true,
@@ -2044,9 +2046,10 @@ fn plan_update_renders_history_cell() {
 }
 
 #[test]
-fn stream_error_is_rendered_to_history() {
+fn stream_error_updates_status_indicator() {
     let (mut chat, mut rx, _op_rx) = make_chatwidget_manual();
-    let msg = "stream error: stream disconnected before completion: idle timeout waiting for SSE; retrying 1/5 in 211ms…";
+    chat.bottom_pane.set_task_running(true);
+    let msg = "Re-connecting... 2/5";
     chat.handle_codex_event(Event {
         id: "sub-1".into(),
         msg: EventMsg::StreamError(StreamErrorEvent {
@@ -2055,11 +2058,15 @@ fn stream_error_is_rendered_to_history() {
     });
 
     let cells = drain_insert_history(&mut rx);
-    assert!(!cells.is_empty(), "expected a history cell for StreamError");
-    let blob = lines_to_single_string(cells.last().unwrap());
-    assert!(blob.contains('⚠'));
-    assert!(blob.contains("stream error:"));
-    assert!(blob.contains("idle timeout waiting for SSE"));
+    assert!(
+        cells.is_empty(),
+        "expected no history cell for StreamError event"
+    );
+    let status = chat
+        .bottom_pane
+        .status_widget()
+        .expect("status indicator should be visible");
+    assert_eq!(status.header(), msg);
 }
 
 #[test]