Support graceful agent interruption (#5287)

codex-rs/core/src/tasks/regular.rs

@@ -1,6 +1,7 @@
 use std::sync::Arc;
 
 use async_trait::async_trait;
+use tokio_util::sync::CancellationToken;
 
 use crate::codex::TurnContext;
 use crate::codex::run_task;
@@ -25,8 +26,17 @@ impl SessionTask for RegularTask {
         ctx: Arc<TurnContext>,
         sub_id: String,
         input: Vec<InputItem>,
+        cancellation_token: CancellationToken,
     ) -> Option<String> {
         let sess = session.clone_session();
-        run_task(sess, ctx, sub_id, input, TaskKind::Regular).await
+        run_task(
+            sess,
+            ctx,
+            sub_id,
+            input,
+            TaskKind::Regular,
+            cancellation_token,
+        )
+        .await
     }
 }