feat: persistent audit trail of GenAI gate decisions#12
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The docs claim 'every GenAI decision is logged and auditable' β until now that was only in-memory (EngineeringResult). Add an AuditLogPort + JsonlAuditLog adapter; GenAIFeatureEngineer records every decision (accepted OR rejected, with feature name, code, score, baseline, metric, reason) durably, one JSON line per proposal. Opt-in (audit_log=...); no-op when unwired. TDD on real data; docs + 'Auditing the decisions' section added.
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Increment 4 (final integrity gap). The docs claim every GenAI decision is logged and auditable β but the trail was only in-memory (
EngineeringResult). Now it can be persisted.Change
AuditLogPort+JsonlAuditLogadapter (features/audit.py).GenAIFeatureEngineergains an opt-inaudit_log=; it records every decision β accepted or rejected β with feature name, code, score, baseline, metric and reason, one JSON line per proposal. No-op when unwired (non-breaking).Tests (real data, LLM-free)
decision+score/baseline/code/dataset.Local gates green: ruff/format/pyright(0)/14 features tests + strict docs. Docs: an Auditing the decisions section added to
genai-features.md. Rebased on the post-#11 main (disjoint files).