Complete RC11 release acceptance

docs/CODEX_EXECUTION_LOG.md

@@ -10654,3 +10654,44 @@ Validation:
 Decision:
 
 - RC-10 is complete. RC-11 final release packaging and acceptance is active.
+
+## 2026-07-18 - Belgium/North Sea RC-11 final release candidate
+
+Implemented:
+
+- Assigned semantic version `1.0.0-rc.1` across backend health, frontend
+  package metadata and OCI image identity.
+- Added a final release runbook and a fail-closed package builder requiring a
+  clean tagged revision, exact image revision, complete SHA-256 inventory and
+  verified detached SSH signature.
+- Updated active repository navigation and product identity to Belgium and the
+  Belgian North Sea while preserving Mol/Kempen as golden regression areas.
+- Added a current known-limitations register for federated coverage, selection
+  semantics, history, AI and operations.
+
+Validation:
+
+- Repository readiness passed backend compilation, 1,030 backend tests,
+  16 frontend tests, frontend typecheck/build and Alembic head
+  `202607160001`. Offline migration SQL generation also passed.
+- The pre-tag `1.0.0-rc.1` image passed live PostGIS migration and proxy smoke,
+  Docker Compose validation and an isolated fresh install.
+- A full SHA-256 storage/model inventory plus PostgreSQL dump verified
+  read-only. Separate isolated restore and upgrade drills matched all retained
+  table counts, PostGIS and Alembic, then removed their temporary databases.
+- Real rollback started immutable build `22fb8d5` against the unchanged
+  volumes, passed live migration/readiness and returned successfully to the
+  RC image.
+- All seven Belgium/North Sea release journeys passed. The UX audit passed at
+  390x844, 1366x768 and 2560x1080 with zero horizontal overflow, browser
+  console errors or failed requests.
+- Python dependency policy and npm audit passed. SPDX SBOM generation and the
+  complete container scan passed the executable policy with zero reachable
+  fixed HIGH/CRITICAL findings.
+- RC10 remained read-only: zero missing current database references, unchanged
+  critical table counts and 2,002 reported zero-delete cleanup candidates.
+
+Decision:
+
+- RC-11 is complete subject only to binding the accepted final commit and
+  immutable image in the signed/checksummed package. No RC-12 phase is used.