{
  "schema": 1,
  "slots": ["a", "b"],
  "activeSlot": "a",
  "previousSlot": "b",
  "rollbackEnv": "BARE_OS_SEED_STAGING_PREVIOUS_SLOT",
  "note": "OTA A/B slot hints for operators; stock kernel merges boot.policy + seeder handshake for enforcement."
}