docs(phase29ao): add coreplan done criteria ssot

docs/development/current/main/phases/phase-29ao/README.md

@@ -1,11 +1,13 @@
 ---
-Status: Active
+Status: Closeout
 Scope: CorePlan composition（Feature合成→Normalizerへ、仕様不変で段階導入）
 Related:
 - docs/development/current/main/design/coreplan-migration-roadmap-ssot.md
+- docs/development/current/main/design/coreplan-migration-done-criteria-ssot.md
 - docs/development/current/main/design/coreplan-skeleton-feature-model.md
 - docs/development/current/main/design/post-phi-final-form-ssot.md
 - docs/development/current/main/design/exitkind-cleanup-effect-contract-ssot.md
+- docs/development/current/main/design/coreloop-composer-v0-v1-boundary-ssot.md
 - docs/development/current/main/phases/phase-29ae/README.md
 ---
 
@@ -16,6 +18,10 @@ Goal: DomainPlan の “complete pattern” に寄り過ぎない形で、**Skel
 Gate（SSOT）:
 - `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
 
+Closeout SSOT:
+- Done criteria: `docs/development/current/main/design/coreplan-migration-done-criteria-ssot.md`
+- v0/v1 boundary: `docs/development/current/main/design/coreloop-composer-v0-v1-boundary-ssot.md`
+
 ## P0: Composer scaffold（未接続・仕様不変）✅
 
 - 指示書: `docs/development/current/main/phases/phase-29ao/P0-COREPLAN-COMPOSER-SCAFFOLD-INSTRUCTIONS.md`
@@ -296,6 +302,14 @@ Gate（SSOT）:
 - SSOT: `docs/development/current/main/design/coreloop-composer-v0-v1-boundary-ssot.md`
 - ねらい: Pattern6/7 の v0/v1 分岐を入口で一本化し、境界責務をSSOT化（仕様不変）
 
+## P55: Stage-3 closeout — Done criteria SSOT + legacy roadmap ✅
+
+- SSOT: `docs/development/current/main/design/coreplan-migration-done-criteria-ssot.md`
+- ねらい: CorePlan移行のDone判定と legacy削減の順序を docs-first で固定
+
 ## Next（planned）
 
-- Next: TBD
+- Next: Phase 29ap (planned)
+  - P56: legacy extractor の削減（段階的、回帰ゲート必須）
+  - P57: router の pattern 名分岐を削減（planner outcome + composer SSOT）
+  - P58: Facts/Feature の拡張（必要に応じて）