# v1.97 Milestone Audit

Status: passed

## Scope Closed

- Phase `171`: Formal Positive Lane To Authoritative L2
- Phase `171.1`: L2 Surface Hardening Under Real Positive/Negative Coexistence
- Phase `171.2`: Positive Replay And Deferred Mode Routing

## Requirements Coverage

Score: `5/5` requirements satisfied

- `REQ-L2POS-01` satisfied by Phase `171` through one fresh
  `formal_derivation` topic that landed a bounded authoritative theorem in
  canonical `L2`.
- `REQ-L2POS-02` satisfied across Phases `171` and `171.1` through promotion
  gate parity, repo-local canonical mirror parity, compiled-report parity, and
  consultation parity.
- `REQ-L2POS-03` satisfied by Phase `171.1` through real positive/negative
  coexistence on the same compiled and consultation surfaces without authority
  drift.
- `REQ-L2POS-04` satisfied by Phase `171.2` through explicit replay receipts
  and one runbook that replays the positive-L2 proof mechanically.
- `REQ-L2POS-05` satisfied by Phase `171.2` through durable blocker and
  next-action notes for the deferred `HS model` and `LibRPA QSGW` lanes.

## Verification Evidence

- Phase `171` fresh positive landing:
  - `pytest-promotion-mirror.txt`: `2 passed`
  - `pytest-theorem-card-consult.txt`: `1 passed`
  - `formal-positive-l2-acceptance.json`: `status = success`
- Phase `171.1` coexistence hardening:
  - `pytest-coexistence-unit.txt`: `1 passed`
  - `pytest-coexistence-script.txt`: `1 passed`
  - `positive-negative-l2-coexistence-acceptance.json`: `status = success`
- Phase `171.2` replay closure:
  - `pytest-positive-mirror.txt`: `1 passed`
  - `pytest-coexistence-unit.txt`: `1 passed`
  - `replay-formal-positive-l2.json`: `status = success`
  - `replay-positive-negative-coexistence.json`: `status = success`

## Cross-Phase Integration

- Phase `171` established the first trustworthy positive authoritative-L2
  landing for the formal lane.
- Phase `171.1` proved that this new positive row and the existing staged
  `negative_result -> contradiction_watch` route can coexist on the same
  compiled and consultation surfaces.
- Phase `171.2` converted the positive-L2 closure from a one-off implementation
  result into a replayable baseline, then routed the deferred multi-mode work
  explicitly to the user-aligned `HS model` and `LibRPA QSGW` lanes.

## Audit Notes

- This milestone, like `v1.95` and `v1.96`, was audited from phase
  `SUMMARY.md` files plus fresh replay receipts rather than from newly-created
  per-phase `VERIFICATION.md` files.
- No unsatisfied requirement remains in the `v1.97` traceability table.
- No new cross-phase blocker appeared in the fresh positive-L2 replay or in
  the positive/negative coexistence replay.

## Accepted Open Gaps

- `toy_model` positive-L2 closure remains deferred until a bounded positive
  `HS model` target and its convergence/benchmark contract are defined.
- `first_principles -> code_method` positive-L2 closure remains deferred until
  the `LibRPA QSGW` lane is ingested into L2 as first-class code-method memory
  and one bounded positive target is chosen.
