Mark milestone 0.1 complete in PHASE0_PLAN and POA&M

Cross-references commit 393631a in the closed-items table.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

POAM.md

@@ -171,7 +171,8 @@ Closures retained for traceability.
 | **YPMS-POAM-090** | ISSO assigned in writing for YPMS | 2026-09-30 | Chris Tonjes designated as ISSO. Role-concentration risk accepted per SSP §5. Update SSP §4 reflects the designation. |
 | — | Stack decision (partial closure of YPMS-POAM-040) | 2026-09-30 | Python 3.12 / FastAPI / SQLAlchemy / Postgres selected (OWC alignment). |
 | — | Architecture document v0.1 (partial closure of YPMS-POAM-040) | 2026-09-30 | `ypms/ARCHITECTURE.md` drafted; forward-looking design following the OWC pattern. |
-| — | Phase 0 plan v0.1 (partial closure of YPMS-POAM-040) | 2026-09-30 | `ypms/PHASE0_PLAN.md` drafted: framework vendor-in, auth, RBAC, audit, Registrant vertical slice, 501 stubs on remaining ARCH §6.1 entities. Ready to start build on your say-so. |
+| — | Phase 0 plan v0.1 (partial closure of YPMS-POAM-040) | 2026-09-30 | `ypms/PHASE0_PLAN.md` drafted: framework vendor-in, auth, RBAC, audit, Registrant vertical slice, 501 stubs on remaining ARCH §6.1 entities. |
+| — | Phase 0 milestone 0.1 shipped (partial closure of YPMS-POAM-040) | 2026-09-30 | Repo scaffold, Docker Compose, FastAPI factory with `/healthz` + `/readyz`, structlog + request-id middleware, Alembic baseline, CI workflow, README + CONTRIBUTING. Tests green (3 passing, ruff + mypy clean). Committed as `393631a`. |
 
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