ALTER TABLE "workspaces" ADD COLUMN "checkpoint_digest" text;--> statement-breakpoint
ALTER TABLE "workspaces" ADD COLUMN "checkpointed_at" timestamp with time zone;--> statement-breakpoint
ALTER TABLE "workspaces" ADD COLUMN "checkpoint_source" text;--> statement-breakpoint
ALTER TABLE "workspaces" ADD COLUMN "checkpoint_collected_at" timestamp with time zone;--> statement-breakpoint
ALTER TABLE "workspaces" ADD COLUMN "cleaned_at" timestamp with time zone;