# v1.60 Milestone Audit

Status: passed

## Scope Closed

- Phase `112`: layer-graph contract
- Phase `113`: runtime and CLI layer-graph surface
- Phase `114`: closure and regression audit

## Production Outcome

`v1.60` now exposes a reviewable flexible-layer surface through:

- `research/knowledge-hub/knowledge_hub/layer_graph_support.py`
- `research/knowledge-hub/knowledge_hub/topic_runtime_surface_support.py`
- `research/knowledge-hub/knowledge_hub/aitp_service.py`
- `research/knowledge-hub/knowledge_hub/aitp_cli.py`
- `research/knowledge-hub/tests/test_layer_graph_support.py`

## Verification Evidence

- layer-graph targeted slice:
  - `python -m pytest research/knowledge-hub/tests/test_layer_graph_support.py research/knowledge-hub/tests/test_runtime_profiles_and_projections.py research/knowledge-hub/tests/test_aitp_cli.py research/knowledge-hub/tests/test_aitp_cli_e2e.py -q`
  - result: `69 passed`
- maintainability-budget gate:
  - `python -m pytest research/knowledge-hub/tests/test_maintainability_budgets.py -q`
  - result: `2 passed`
- full knowledge-hub suite:
  - `python -m pytest research/knowledge-hub/tests -q`
  - result: `346 passed, 10 subtests passed`
