fix: restore checkpoint visibility in UI

- Changed suppressMessage flag from true to false when creating checkpoints for user messages
- This ensures checkpoints are visible in the UI so users can restore their code when needed
- Fixes issue where checkpoint list was not appearing below API requests

Fixes #7786

Author: roomote

src/core/task/Task.ts

@@ -892,9 +892,9 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 
 		// Create a checkpoint whenever the user sends a message.
 		// Use allowEmpty=true to ensure a checkpoint is recorded even if there are no file changes.
-		// Suppress the checkpoint_saved chat row for this particular checkpoint to keep the timeline clean.
+		// Do not suppress the checkpoint_saved chat row so users can see and restore checkpoints.
 		if (askResponse === "messageResponse") {
-			void this.checkpointSave(false, true)
+			void this.checkpointSave(false, false)
 		}
 
 		// Mark the last follow-up question as answered