import { seedPerfState } from "../integration/perf/seedPerfState.ts"; const PERF_SEED_JSON_START = "__T3_PERF_SEED_JSON_START__";const PERF_SEED_JSON_END = "__T3_PERF_SEED_JSON_END__";const scenarioId = process.argv[2]; if (scenarioId !== "large_threads" && scenarioId !== "burst_base") {  console.error(`Expected a perf seed scenario id, received '${scenarioId ?? "<missing>"}'.`);  process.exit(1);} const seeded = await seedPerfState(scenarioId);const payload = JSON.stringify(  {    scenarioId: seeded.scenarioId,    baseDir: seeded.baseDir,    workspaceRoot: seeded.workspaceRoot,    projectTitle: seeded.snapshot.projects[0]?.title ?? null,    threadSummaries: seeded.snapshot.threads.map((thread) => ({      id: thread.id,      title: thread.title,      messageCount: thread.messages.length,      activityCount: thread.activities.length,      proposedPlanCount: thread.proposedPlans.length,      checkpointCount: thread.checkpoints.length,    })),  },  null,  2,);process.stdout.write(`${PERF_SEED_JSON_START}\n${payload}\n${PERF_SEED_JSON_END}\n`);