docs: add Phase 3 PR body record

computeaholic · computeaholic · commit e7ce82b8c4ea · 2026-02-26T22:54:33.000-06:00
diff --git a/.pr_body_phase3.md b/.pr_body_phase3.md
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+Summary
+
+This PR completes Phase 3 of the reservation-service implementation by hardening invariants, enforcing deterministic runtime behavior, and formalizing repository-level linting and security gates.
+
+Functional Scope
+
+Postgres-backed integration tests
+
+Explicit transaction isolation (READ COMMITTED)
+
+Idempotency enforcement
+
+Inventory invariant protection
+
+Alembic migration wiring
+
+99.52% branch-aware test coverage
+
+Runtime Determinism
+
+Docker runtime aligned to Alpine-native shell
+
+Compose contract hardened with explicit DATABASE_URL
+
+make up and make test deterministic from cold state
+
+No dependency drift between local execution and CI
+
+Tooling & Security Gates
+
+Ruff and Black enforced
+
+Strict mypy on src
+
+Bandit security scan on src
+
+Detect-secrets baseline committed
+
+Pre-commit hooks enforced
+
+CI mirrors local Make targets
+
+Non-Goals
+
+No feature expansion beyond Phase 3 scope
+
+No architectural refactor
+
+No async conversion
+
+No API layer introduction
+
+No schema changes beyond initial migration
+
+Verification
+
+Validated locally via:
+
+make lint
+make test
+pre-commit run --all-files
+docker compose down -v
+make up
+make test
+
+All gates passing.
+
+Checklist
+
+ Tests passing
+
+ Coverage ≥ 80% (actual: 99.52%)
+
+ Lint clean
+
+ Type check clean
+
+ Security scan clean
+
+ Deterministic runtime validated
