Caption Debt Default / 字幕债默认

caption_debt_default:
  false_clean_caption_claim: true
  dropped_requirement: source_caption_row | harmed_reader | proof_bridge | handler_posture | future_route_effect
  harmed_or_omitted_reader: access_reader | fan_public | lawful_reader | archive | route_asset | explicit_absence
  future_reader_or_route_effect: recovery_only | caption_repair_required | route_asset_blocked | sponsor_only_costlier
  durable_mutation: true

The default is armed when a future route tries to consume a clean caption without a named source row, harmed reader, proof bridge, handler posture, and future route effect. It records the hidden gap as a route scar, not as flavor text.