fix(checkpoints): suppress implicit user-message checkpoint row; keep current checkpoint updated without a chat row

Author: hannesrudolph

src/core/checkpoints/index.ts

@@ -133,8 +133,16 @@ async function checkGitInstallation(
 
 		service.on("checkpoint", ({ fromHash: from, toHash: to }) => {
 			try {
+				// Always update the current checkpoint hash in the webview
 				provider?.postMessageToWebview({ type: "currentCheckpointUpdated", text: to })
 
+				// Optionally suppress the chat row for the next checkpoint (used for the
+				// implicit checkpoint created on user message submission).
+				if (task.suppressNextCheckpointMessage) {
+					task.suppressNextCheckpointMessage = false
+					return
+				}
+
 				task.say("checkpoint_saved", to, undefined, undefined, { from, to }, undefined, {
 					isNonInteractive: true,
 				}).catch((err) => {

src/core/task/Task.ts

@@ -281,6 +281,7 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 	isStreaming = false
 	currentStreamingContentIndex = 0
 	currentStreamingDidCheckpoint = false
+	suppressNextCheckpointMessage = false
 	assistantMessageContent: AssistantMessageContent[] = []
 	presentAssistantMessageLocked = false
 	presentAssistantMessageHasPendingUpdates = false
@@ -892,7 +893,9 @@ 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.
 		if (askResponse === "messageResponse") {
+			this.suppressNextCheckpointMessage = true
 			void this.checkpointSave(true)
 		}