diff --git a/PROJECT_REGISTRY.yml b/PROJECT_REGISTRY.yml
index e5a1209..d153169 100644
--- a/PROJECT_REGISTRY.yml
+++ b/PROJECT_REGISTRY.yml
@@ -169,6 +169,10 @@ projects:
       - {type: organization-infrastructure, target: root-sequence}
 
 external_or_nested_projects:
+  - id: coherent-world-simulation
+    role: playable convergence layer and experiential systems laboratory within Coherent World
+    canonical_home: Root-Sequence/coherent-world/simulation
+    visibility: private-with-public-safe-role-disclosed
   - id: no-one-noticed
     role: narrative expression of Coherent World
     canonical_home: Root-Sequence/coherent-world/no-one-noticed
diff --git a/START-HERE.md b/START-HERE.md
index d76c87e..4b2966d 100644
--- a/START-HERE.md
+++ b/START-HERE.md
@@ -4,7 +4,7 @@
 
 <!-- START-HERE-META
 format: 1
-review_sources: README.md, PROJECT_STEWARDSHIP.md, COGNITIVE_ONRAMPS.md, workflow-templates
+review_sources: README.md, PROJECT_STEWARDSHIP.md, COGNITIVE_ONRAMPS.md, DOCUMENTATION_SYSTEM.md, PROJECT_REGISTRY.yml, PROJECT-CONTEXT.md, workflow-templates
 review_when: stewardship policy, shared workflow, onboarding standard, or automation-boundary changes
 END-START-HERE-META -->
 
@@ -22,12 +22,14 @@ The `.github` repository defines shared contribution guidance, workflow template
 
 ## Current reality
 
-The repository currently provides stewardship policy and workflow templates that projects may adopt incrementally. It is not yet a complete cross-project stewardship engine, an authority that can rewrite every project, or a guarantee that documentation is current merely because checks pass.
+The repository currently provides stewardship policy, documentation contracts, a public-safe project registry, and workflow templates that projects may adopt incrementally. It is not yet a complete cross-project stewardship engine, an authority that can rewrite every project, or a guarantee that documentation is current merely because checks pass.
 
 ## The smallest useful map
 
 - [`PROJECT_STEWARDSHIP.md`](PROJECT_STEWARDSHIP.md) — maintenance philosophy and boundaries.
 - [`COGNITIVE_ONRAMPS.md`](COGNITIVE_ONRAMPS.md) — the organization-wide `START-HERE.md` standard and update policy.
+- [`DOCUMENTATION_SYSTEM.md`](DOCUMENTATION_SYSTEM.md) — the shared human/AI context layers and typed relationship model.
+- [`PROJECT_REGISTRY.yml`](PROJECT_REGISTRY.yml) — the public-safe machine-readable routing graph.
 - `workflow-templates/` — optional organization workflow starters.
 - `profile/` — organization-profile content shown on GitHub.
 
@@ -40,7 +42,8 @@ Individual repositories remain responsible for their own truth, scope, tests, an
 - **Maintaining a repo:** use the stewardship checklist and keep its `START-HERE.md` aligned with material changes.
 - **Automating a task:** first ask whether the result is deterministic or requires semantic review.
 - **Changing a shared rule:** propose it here, then adopt it incrementally rather than assuming every repository changed automatically.
+- **Changing a project identity or relationship:** update the canonical project first, then review the registry and Wiki projection.
 
 ## Go deeper
 
-Read [`PROJECT_STEWARDSHIP.md`](PROJECT_STEWARDSHIP.md) and [`COGNITIVE_ONRAMPS.md`](COGNITIVE_ONRAMPS.md). The goal is less human memory burden, not more ceremony.
+Read [`PROJECT_STEWARDSHIP.md`](PROJECT_STEWARDSHIP.md), [`COGNITIVE_ONRAMPS.md`](COGNITIVE_ONRAMPS.md), and [`DOCUMENTATION_SYSTEM.md`](DOCUMENTATION_SYSTEM.md). The goal is less human memory burden, not more ceremony.