Mark milestone 0.6 complete in PHASE0_PLAN, POA&M, and status handoff

Status handoff also records four permission-matrix review items the
stub sweep surfaced (no Restore holders; admin-only Program /
EligibilityRule config; admin-only IntegrationEvent; HOST_USER Delete
pending row-level ownership).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

PHASE0_PLAN.md

@@ -76,7 +76,7 @@ Every Phase 0 component maps to a source-RFP requirement or a NIST control. Tabl
 | **0.3** | Auth + JWT + assurance_level | ✅ **Complete 2026-09-30.** `POST /auth/login` (OAuth2 form) returns access + refresh JWTs; access token carries `sub`, `uid`, `roles`, `iam.assurance_level`, `mfa_verified`, `iat`, `exp`, `type`. `get_current_user` verifies and rejects refresh tokens. `/auth/refresh`, `/auth/me`, `/auth/change-password` (≥12 char floor) also shipped. Login lockout after 5 IP-scoped failed attempts / 15 min per NIST AC-7. 43 tests, 93.47% coverage. |
 | **0.4** | RBAC seed loaded | ✅ **Complete 2026-09-30.** 8 roles seeded from `seed/roles.py`. Permissions matrix at `seed/permissions_matrix.json` — role-first grants across 30 entities × 8 actions. `python -m ypms.seed.run` wired into docker-compose. Loader validates every cell against declared actions/entities and refuses unknown roles at seed time. 53 tests, 92.20% coverage; end-to-end `can()` decisions verified per role including admin bypass. |
 | **0.5** | Registrant vertical slice | ✅ **Complete 2026-09-30.** `Registrant` model + schemas + router (`src/ypms/youth/`) + migration `0003_registrants`. SSN AES-256-GCM encrypted at the app layer (`security/column_crypto.py`), write-only on the model, serializer emits only `XXX-XX-1234`. `pii_read` audit on GET, list, and history; every state change emits an audit row with ciphertext redacted via new `__audit_redact__` framework hook. Portal-only roles restricted to own row (Phase 0 minimum; PARENT_USER blocked until Guardian). 98 tests, 94.83% coverage. Coverage doc at `docs/coverage/registrant.md`. |
-| **0.6** | 501-stub routers for remaining entities | Every entity in ARCH §6.1 (except Registrant, User, Role, Permission, AuditRow) has a router registered in `main.py` that returns 501 while still firing RBAC + audit. Test asserts RBAC decision and audit emission for each. |
+| **0.6** | 501-stub routers for remaining entities | ✅ **Complete 2026-09-30.** 26 stub entities registered in `src/ypms/stubs.py`, each with a router from `framework/stub_router.py` exposing one route per matrix action (8). Every route runs the real RBAC check and writes an audit row before returning 501. `tests/test_stubs.py` sweeps entity × role × route against the matrix JSON (501 + one audit row when granted; 403 + none when not). Registrant restore moved to the matrix `Restore` action. 138 tests, 95.05% coverage. |
 | **0.7** | Retention scaffold | `retention_policy` attribute on every entity model (even 501-stub entities have a model). Nightly job in `src/ypms/framework/retention.py` runs, logs "0 records to purge" — no-op but wired. |
 | **0.8** | CI pipeline | GitHub Actions workflow with lint (ruff), types (mypy/pyright — match OWC's pick), tests, bandit, pip-audit, gitleaks, SBOM. Green build on `main`. |
 | **0.9** | Docs + acceptance | `README.md` with runnable quickstart; `CONTRIBUTING.md` with hard rules; `docs/nist-mapping.md` skeleton; this file marked complete. |