feat(checkpoints): per-task change journal with torn-tail repair (B2, #1375)

packages/types/src/global-settings.ts

@@ -114,6 +114,13 @@
  */
 export const DEFAULT_CHECKPOINT_TIMEOUT_SECONDS = 15
 
+/**
+ * Whether per-write checkpoints and task-start baseline are enabled by default.
+ * Master switch for the B cluster of checkpoint features.
+ * @default true
+ */
+export const DEFAULT_PER_WRITE_CHECKPOINTS = true
+
 /**
  * GlobalSettings
  */
@@ -223,6 +230,12 @@
 		.min(MIN_CHECKPOINT_TIMEOUT_SECONDS)
 		.max(MAX_CHECKPOINT_TIMEOUT_SECONDS)
 		.optional(),
+	/**
+	 * Whether to record a shadow-git checkpoint after every successful write_to_file,
+	 * edit_file, and apply_patch (per-write checkpoints), plus a task-start baseline.
+	 * @default true
+	 */
+	perWriteCheckpoints: z.boolean().optional(),
 
 	ttsEnabled: z.boolean().optional(),
 	ttsSpeed: z.number().optional(),

packages/types/src/vscode-extension-host.ts

@@ -366,6 +366,7 @@ export type ExtensionState = Pick<
 
 	enableCheckpoints: boolean
 	checkpointTimeout: number // Timeout for checkpoint initialization in seconds (default: 15)
+	perWriteCheckpoints: boolean
 	maxOpenTabsContext: number // Maximum number of VSCode open tabs to include in context (0-500)
 	maxWorkspaceFiles: number // Maximum number of files to include in current working directory details (0-500)
 	showRooIgnoredFiles: boolean // Whether to show .rooignore'd files in listings