# v1.64 Milestone Audit

Status: passed

## Scope Closed

- Phase `124`: method-specificity contract
- Phase `125`: method-specificity runtime and acceptance surface
- Phase `126`: closure and regression audit

## Production Outcome

`v1.64` now exposes a reviewable L1 method-specificity surface through:

- `research/knowledge-hub/knowledge_hub/source_intelligence.py`
- `research/knowledge-hub/knowledge_hub/source_distillation_support.py`
- `research/knowledge-hub/knowledge_hub/l1_source_intake_support.py`
- `research/knowledge-hub/knowledge_hub/kernel_markdown_renderers.py`
- `research/knowledge-hub/knowledge_hub/runtime_read_path_support.py`
- `research/knowledge-hub/runtime/scripts/run_l1_method_specificity_acceptance.py`

The milestone adds:

- `method_specificity_rows` inside `l1_source_intake`
- method family plus specificity-tier exposure through topic shell, runtime
  bundle, and `status --json`
- a real isolated runtime acceptance path for the new surface

## Verification Evidence

- method-specificity targeted slice:
  - `python -m pytest research/knowledge-hub/tests/test_topic_start_regressions.py research/knowledge-hub/tests/test_aitp_service.py research/knowledge-hub/tests/test_runtime_profiles_and_projections.py research/knowledge-hub/tests/test_schema_contracts.py research/knowledge-hub/tests/test_aitp_cli_e2e.py research/knowledge-hub/tests/test_l1_method_specificity_contracts.py -q`
  - result: `175 passed`
- method-specificity acceptance:
  - `python research/knowledge-hub/runtime/scripts/run_l1_method_specificity_acceptance.py --json`
  - result: `success`
- 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: `368 passed, 10 subtests passed`
