feat(P1): event emitters — CloudEvents envelope, Decision Ledger, Infracost adapter, attestation/confidence/policy event emission
P1 (Wave 1, feat) — REQ-187, REQ-188, REQ-205 (emitter), REQ-206 (emitter)
New components:
- core/metrics/event_envelope.py — CloudEvents 1.0 envelope + platform.* conventions
- core/metrics/run_manifest.py — per-run manifest writer (nova.run.started/completed/failed)
- core/metrics/decision_ledger.py — SQLite append-only hash-chain (ai.decision.made + attestation.recorded)
- core/metrics/infracost_adapter.py — Infracost post-processor (degraded mode when CLI absent, A6)
- schemas/metrics_event.schema.json — CloudEvents envelope schema
- schemas/metrics_run_manifest.schema.json — per-run manifest schema
- metrics/README.md — backup/restore doc (REQ-201)
- tests/test_metrics_emitters.py — 16 tests (all pass)
Modified components:
- core/confidence_signal.py — emits nova.confidence.computed + nova.ai.decision.made (D-122)
- core/hitl_gates.py — emits nova.attestation.recorded on qa/prod/dr gates (D-132)
- adapters/terraform/policy/checkov_adapter.py — emits nova.policy.evaluated
- pyproject.toml — addopts gains --junitxml + --json-report + --cov (REQ-206)
- .gitignore — metrics runtime artifacts ignored
D-120: Nova-native (JSONL + SQLite, no Kafka/OTel)
D-121: Decision Ledger = outbox_writer extension → SQLite hash-chain
D-122: AI decision = confidence_signal + HITL gate (not LLM)
D-128: metrics/ at repo root
D-132: Attestation instrumentation
---ci---
project: acdl
phase: 1
milestone: v1.17
status: execute
---/ci---
Jon Chery
f8616b806e