docs(phase29ai): link P2 SSOT docs

docs/development/current/main/design/planfrag-freeze-taxonomy.md

@@ -42,3 +42,8 @@ Scope: Facts → Plan（仕様不変）
 
 必要なら hint を別枠で付ける（ログで検知しやすくする）。
 
+## References
+
+- Entry: `docs/development/current/main/phases/phase-29ai/README.md`
+- Plan/Frag overview: `docs/development/current/main/design/edgecfg-fragments.md`
+- Pattern6/7 contracts: `docs/development/current/main/design/pattern6-7-contracts.md`

docs/development/current/main/design/planfrag-ssot-registry.md

@@ -21,3 +21,8 @@ Scope: JoinIR plan/frag 導線（仕様不変）
 - “Forbidden” は将来の if 地獄 / hidden fallback を防ぐための境界ガード。
 - Verification は既存の `contract_checks` と整合する形で増やす（既定挙動は変えない）。
 
+## References
+
+- Entry: `docs/development/current/main/phases/phase-29ai/README.md`
+- Plan/Frag overview: `docs/development/current/main/design/edgecfg-fragments.md`
+- Pattern6/7 contracts: `docs/development/current/main/design/pattern6-7-contracts.md`