docs(branch): 기존 7개 노트를 개정 결정·신규 위임에 정합

- REGISTRY-001 Summary 문자열 4곳 (additive, revision 은 1 유지).
  registry-governance 는 본문 서술 12곳의 '8개'도 함께 9개로 갱신
- OFFLINE-CACHE-001 pin @1->@2 와 Summary·적용점 (behavior-change)
- DELEG-FE-007~011 delegate 5곳 접수 완료 — 미접수 위임 0건
- runtime-schema-validation 이 FLOW-FE-EVENT-003/004 소유를 명시
- env-runtime-config 가 FE-REG-CAPABILITY registry 와 FE-GATE-033 gate
  owner 를 취득하고 claim 2건 추가
- 신규 6개 노트의 delegation pin 을 기존 @1 형식으로 정규화

raw/branch-notes/feature-frontend-background-execution-worker-contract.md

@@ -11,8 +11,8 @@ refines: []
 overrides: []
 depends_on: [WI-CA-SKELETON-FRONTEND-OPERATIONAL-CONTRACT-005, WI-CA-SKELETON-FRONTEND-OPERATIONAL-CONTRACT-024]
 imports: [FE-GATE-032@1, FE-OC-009@1, FE-OC-016@1, FE-OC-017@1, FE-OC-025@1]
-delegates: [DELEG-FE-011]
-accepts_delegations: [DELEG-FE-007]
+delegates: [DELEG-FE-011@1]
+accepts_delegations: [DELEG-FE-007@1]
 contract_packet: 1
 branch: feature-frontend-background-execution-worker-contract
 parent_branch:
@@ -99,7 +99,7 @@ status_label: in-progress
 
 | Delegation Ref | From | Concern | Status |
 |---|---|---|---|
-| `DELEG-FE-007` | `feature-frontend-realtime-subscription-lifecycle-contract` | WebPush 가 요구하는 service worker 등록·수명주기 호스팅 | accepted |
+| `DELEG-FE-007@1` | [[raw/branch-notes/feature-frontend-realtime-subscription-lifecycle-contract]] | `fe.deleg.sw-host-for-push` | accepted |
 <!-- GENERATED: received-delegations:end -->
 
 <!-- GENERATED: flow:start -->