Backflow Usher Receipt / 逆流引座回执线

Backflow Usher Receipt is the non-character pressure storyline for the moment a late reversed-flow carrier returns after a prior receipt, all-clear, roll-call, service notice, or public recap has already started to harden.

The character storyline 岑回逆流引座员线 proves that 岑回 can be recruited, missed, sealed, credited, captured, or made hostile. This storyline owns the broader route problem: a late backflow row can narrow an old receipt, but it cannot make the old receipt true for every future reader.

Gap diagnosis

The corpus already has:

• 直播现场通行瓶颈线 for one-way movement scars;
• 漏点名复核线 for presence, absence, identity, and condition;
• 私约违背线 for private boundary and promise scope;
• 公开回顾捕获线 for recap memory capture;
• 岑回逆流引座员线 for the carrier as person and route asset.

The uncovered seam is cross-system consumption. A later route can still read safe_exit, all_present, served, released, public_all_clear, or sponsor_manifest_presence and ignore the late backflow scar that narrowed that claim.

This storyline makes the late row a route-visible receipt scope problem, not only a character encounter.

Primary playable question

When a reversed-flow carrier returns with proof after the board has begun to count the room as clear, does the producer recruit the scar runner, seal the witness, publicly credit the late proof, trade it to a desk, quarantine the route scar, refuse the late row, or let false merge become durable?

A valid answer must name:

• the prior receipt or explicit absence;
• the reversed-flow carrier;
• the late subject or proof bundle;
• the identity, seal, boundary, or promise scope;
• the merge claim;
• the harmed reader if merged cleanly;
• the future reader or route that will consume the row.

State-triggered entry

Open this storyline only when live state contains a receipt conflict:

entry_state_required:
  trigger_kind: state_pressure
  prior_receipt_present_or_explicit_absence: true
  prior_receipt_kind_visible: true
  reversed_flow_carrier_present: true
  late_subject_or_bundle_visible: true
  reversed_flow_node_visible_or_explicit_absence: true
  borrowed_or_sealed_identity_visible_or_explicit_absence: true
  boundary_or_promise_visible_or_explicit_absence: true
  merge_claim_present: true
  harmed_reader_if_merged_visible: true
  future_reader_or_route_consumes_backflow_state: true
  player_can_recruit_seal_credit_trade_quarantine_refuse_or_default: true
  no_fixed_turn_trigger: true
  no_fixed_day_or_week_trigger: true
  no_raw_missing_or_receipt_count_trigger: true
  no_dashboard_or_lens_health_trigger: true

Invalid entry is a fixed turn, generic cleanup phase, raw missing count, raw receipt count, dashboard warning, lens-health state, or relationship score.

Bound content pack

• 逆流引座回执机制 defines the locks, branch families, defaults, and replay shape.
• 逆流引座账本 stores the prior receipt, carrier, merge risk, harmed reader, and future reader locks.
• 逆流引座收容 resolves the late row before future readers treat it as proof.
• 虚假逆流并账默认 fires or arms when the late row is folded into clean all-clear.
• 岑回逆流引座员线 remains the character-bound route for Cen Hui.

Storyline spine

Beat 1 - Prior receipt starts to harden

A system already holds a receipt. It may claim safe exit, presence, service, release, escort, public all-clear, lawful-only presence, sponsor manifest presence, or equivalent.

The receipt holder may be producer, safety marshal, archive, inspector, sponsor, fan delegate, access operator, lawful table, or broadcast reality.

Beat 2 - Backflow row contradicts clean memory

A reversed-flow carrier returns from a stage threshold, service corridor chain, fan oxygen gate, ward air room, archive counter, white-glove checkpoint, sponsor bridge booth, or equivalent.

The carrier brings a late subject or bundle: named character, sealed witness, access-caption reader, fan delegate, proof bundle, route asset pouch, oxygen mask, edit checksum, or equivalent.

Beat 3 - Ledger separates the four locks

Create or update 逆流引座账本.

The row must keep four locks separate:

required_locks:
  prior_receipt_lock: prior_receipt_id_or_absence, kind, claim, holder
  carrier_lock: carrier, state, node, carried_bundle, identity_or_seal, boundary_or_promise
  merge_risk_lock: merge_claim, harmed_reader_if_merged, omitted_scar_if_merged
  future_reader_lock: future_reader_or_route, state_if_handled, state_if_ignored

The row fails if it collapses to attendance_fixed, proof_delivered, usher_found, all_clear_confirmed, or equivalent.

Beat 4 - Intake assigns the receipt scope

Run 逆流引座收容 before a future reader uses the late row.

Valid postures:

• recruit_scar_runner
• seal_witness
• public_credit
• trade_to_desk
• quarantine_route_scar
• refuse_late_row
• false_backflow_merge_default

Beat 5 - Future readers inherit the scar

At least one later route must consume the backflow state. Valid readers include roll-call recheck, public recap, access-caption class, fan oxygen audit, archive custody, lawful table, route asset reader, ending-scar ledger, or broadcast reality patch.

If a later route reads only the prior receipt and ignores the backflow scar, 虚假逆流并账默认 must fire or remain armed.

Branch matrix

Branch	Immediate relief	Cost/scar	Future state
Recruit scar runner	false all-clear blocked; future carrier available	handler burden, sponsor pressure, inspection heat	route asset available with cost
Seal witness	sealed subject counted without public name	public distrust, lawful or handler burden	lawful-only backflow receipt
Public credit	public memory corrected	witness exposure, fan pressure, sponsor pressure	protection required before next use
Trade to desk	contradiction pressure drops	capture, archive debt, faction gate	future backflow route costlier
Quarantine route scar	proof contamination blocked	route delay, schedule pressure, fan queue pressure	follow-up roll-call or recovery-only
Refuse late row	promise scope preserved; clean use blocked	proof gap, blocked route, substitute receipt pressure	substitute receipt required
False merge default	board clears fast	hidden scar hardens	hostile or captured carrier, correction required, recovery-only, ending scar

No constructive branch may satisfy every public, lawful, sponsor, archive, fan, access-caption, route asset, character, and broadcast-reality reader at once.

Counter contract

Every non-default branch must mutate at least one relief surface, one cost surface, and one future reader or route surface.

Accepted surfaces:

• relief: false_all_clear_blocked, route_asset_integrity_up, sealed_identity_preserved, public_receipt_legitimacy_up, proof_contamination_down;
• cost: handler_burden_up, sponsor_stop_loss_pressure_up, inspection_heat_up, public_receipt_distrust_up, witness_exposure_up, fan_oxygen_queue_pressure_up, archive_debt_up, route_delay_up;
• future: lawful_only_backflow_receipt, protection_required_before_next_use, future_roll_call_challenge, public_recap_correction_required, backflow_route_recovery_only, ending_scar.

Missability and recovery

The storyline is missed when a future reader consumes a prior receipt as clean proof while a reversed-flow carrier, late bundle, identity boundary, merge claim, or harmed reader remains hidden.

Missed or default states include:

• false_backflow_merge;
• hostile_backflow_witness;
• captured_carrier;
• public_recap_correction_required;
• future_roll_call_challenge;
• route_blocked;
• recovery_only_backflow_route;
• ending_scar.

Recovery is valid only through a visible cost: substitute receipt, sealed recheck, public addendum, witness protection, payroll token, route quarantine, access-caption certificate, fan oxygen review, or ending scar.

Replay evidence expectation

storyline_id: storyteller.storyline.backflow_usher_receipt.v1
session_id: lens-backflow-usher-receipt-v1-<timestamp>
seed: <deterministic-seed>
entry_state:
  trigger_kind: state_pressure
  prior_receipt_id_or_absence: <id or explicit_absence>
  prior_receipt_kind: <kind>
  reversed_flow_carrier_present: true
  late_subject_or_bundle_visible: true
  identity_or_seal_visible_or_explicit_absence: true
  boundary_or_promise_visible_or_explicit_absence: true
  merge_claim_present: true
  harmed_reader_if_merged_visible: true
  future_reader_or_route_consumes_backflow_state: true
  no_fixed_turn_trigger: true
offered:
  card: storyteller.card.backflow_usher_ledger.v1
  rite: storyteller.rite.backflow_usher_intake.v1
branch_result:
  selected_posture: recruit_scar_runner | seal_witness | public_credit | trade_to_desk | quarantine_route_scar | refuse_late_row | false_backflow_merge_default
  carrier_state_after: <state>
  backflow_state_after: <state>
  future_reader_effect: <effect>
  counter_deltas:
    relief: []
    cost: []
    future: []
default:
  event_seen_or_armed: storyteller.event.false_backflow_merge_default.v1 | explicit_absence
assertions:
  - entry_is_state_triggered
  - prior_receipt_carrier_bundle_identity_boundary_merge_risk_harmed_reader_and_future_reader_are_visible
  - ledger_keeps_four_locks_separate
  - branch_outcomes_diverge_by_carrier_state_receipt_scope_cost_and_future_effect
  - no_universal_all_clear
  - false_merge_default_mutates_future_play
  - no_fixed_turn_day_week_raw_count_dashboard_or_lens_health_trigger

Non-goals

• Not a duplicate of Cen Hui’s character route.
• Not a generic evacuation or attendance system.
• Not a proof-carryover duplicate.
• Not public recap by itself.
• Not a fixed-turn event.
• Not valid unless the late row changes receipt scope, harmed reader, carrier state, route access, or future cost.