Fix for checkpoints (RooCodeInc#3993)

Author: canvrno

.changeset/breezy-numbers-yawn.md

@@ -0,0 +1,5 @@
+---
+"claude-dev": patch
+---
+
+Fix for checkpoints

src/core/task/index.ts

@@ -1229,15 +1229,35 @@ export class Task {
 			//
 		} else {
 			// attempt completion requires checkpoint to be sync so that we can present button after attempt_completion
-			const commitHash = await this.checkpointTracker?.commit()
-			// For attempt_completion, find the last completion_result message and set its checkpoint hash. This will be used to present the 'see new changes' button
-			const lastCompletionResultMessage = findLast(
-				this.clineMessages,
-				(m) => m.say === "completion_result" || m.ask === "completion_result",
-			)
-			if (lastCompletionResultMessage) {
-				lastCompletionResultMessage.lastCheckpointHash = commitHash
-				await this.saveClineMessagesAndUpdateHistory()
+			// Check if checkpoint tracker exists, if not, create it
+			if (!this.checkpointTracker) {
+				try {
+					this.checkpointTracker = await CheckpointTracker.create(
+						this.taskId,
+						this.context.globalStorageUri.fsPath,
+						this.enableCheckpoints,
+					)
+				} catch (error) {
+					const errorMessage = error instanceof Error ? error.message : "Unknown error"
+					console.error("Failed to initialize checkpoint tracker for attempt completion:", errorMessage)
+					return
+				}
+			}
+
+			if (this.checkpointTracker) {
+				const commitHash = await this.checkpointTracker.commit()
+
+				// For attempt_completion, find the last completion_result message and set its checkpoint hash. This will be used to present the 'see new changes' button
+				const lastCompletionResultMessage = findLast(
+					this.clineMessages,
+					(m) => m.say === "completion_result" || m.ask === "completion_result",
+				)
+				if (lastCompletionResultMessage) {
+					lastCompletionResultMessage.lastCheckpointHash = commitHash
+					await this.saveClineMessagesAndUpdateHistory()
+				}
+			} else {
+				console.error("Checkpoint tracker does not exist and could not be initialized for attempt completion")
 			}
 		}