# v1.98 Milestone Audit

Status: passed

## Scope Closed

- Phase `172`: HS Model Positive Target And Benchmark Contract
- Phase `172.1`: HS Model Positive Promotion To Authoritative L2
- Phase `172.2`: HS Positive Replay And HS Negative Coexistence Closure

## Requirements Coverage

Score: `5/5` requirements satisfied

- `REQ-HS-01` satisfied by Phase `172` through one fresh `toy_model` topic
  that was narrowed to the bounded positive target
  `candidate:hs-chaos-window-finite-size-core`.
- `REQ-HS-02` satisfied by Phase `172` through an explicit benchmark/trust
  contract that kept the positive target bounded to the robust finite-size core
  and preserved exact HS `alpha = 2` as a negative comparator.
- `REQ-HS-03` satisfied by Phase `172.1` through one human-gated promotion
  that landed `claim:hs-like-chaos-window-finite-size-core` in authoritative
  canonical `L2` with durable backend and repo-local receipts.
- `REQ-HS-04` satisfied across Phases `172.1` and `172.2` through compiled
  knowledge-report parity plus `consult-l2` parity for both the positive HS
  authoritative claim and the staged HS negative-result route.
- `REQ-HS-05` satisfied by Phase `172.2` through one replayable coexistence
  acceptance lane plus explicit carry-over notes for the deferred
  `LibRPA QSGW` first-principles / code-method lane.

## Verification Evidence

- Phase `172` bounded target contract:
  - `pytest-hs-target-contract.txt`: `1 passed`
  - `hs-toy-model-target-contract-acceptance.json`: `status = success`
- Phase `172.1` authoritative positive landing:
  - `pytest-hs-positive-l2.txt`: `1 passed`
  - `pytest-promotion-bindings.txt`: `2 passed`
  - `hs-positive-l2-acceptance.json`: `status = success`
- Phase `172.2` positive/negative coexistence:
  - `pytest-hs-coexistence-script.txt`: `1 passed`
  - `hs-positive-negative-coexistence-acceptance.json`: `status = success`
- Fresh combined regression check:
  - `python -m pytest research/knowledge-hub/tests/test_runtime_scripts.py -k "hs_positive_l2_acceptance_script_runs_on_isolated_work_root or hs_positive_negative_coexistence_acceptance_script_runs_on_isolated_work_root or transition_history_acceptance_script_runs_on_isolated_work_root or human_modification_record_acceptance_script_runs_on_isolated_work_root" -q`
  - result: `4 passed`

## Cross-Phase Integration

- Phase `172` chose the only honest bounded HS positive lane that does not
  collide with the already-shipped exact-HS OTOC mismatch failure route.
- Phase `172.1` turned that bounded target into one authoritative canonical
  `L2` claim and proved backend writeback, repo-local mirror writeback, and
  consultation parity on an isolated work root.
- Phase `172.2` proved the new HS authoritative claim and the existing staged
  HS contradiction route coexist on the same compiled and consultation
  surfaces, then isolated the next unclosed lane to `LibRPA QSGW`.

## Audit Notes

- This milestone follows the same audit convention as `v1.97`: it 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 `v1.98` traceability table.
- No new cross-phase blocker appeared in the fresh authoritative-L2 replay or
  in the HS positive/negative coexistence replay.

## Accepted Open Gaps

- The bounded HS toy-model lane is closed only for the robust finite-size core;
  weak-shoulder, thermodynamic, larger-system, and operator-robustness claims
  remain explicitly out of scope.
- The `first_principles -> code_method -> authoritative L2` closure remains
  deferred until the `LibRPA QSGW` lane is ingested as first-class codebase
  knowledge and one bounded positive target is chosen.
