The substrate is a store and a broker

Third correction to one table today, found the same way as the other two: by asking whether both halves of the test were answered, or only the easy one. 0006 admits the registry because "it cannot grant itself a repository" — true, and the second half. Nothing established that the control plane needs one in order to run. Counted rather than argued: the bundle raises twelve resources and no registry is among them. The registry arrives afterwards as an ordinary module, which is exactly what the lab asserts. 0006 half-said this already, calling it "substrate by role and ordinary by delivery, provisioned once there is a control plane to do it". A member provisioned by the thing it supposedly precedes is not a member; that phrase was carrying a contradiction rather than resolving one. The registry is a closer call than the object store and the difference is worth keeping: the control plane never touches an object store at all, but it genuinely uses the registry. So the registry is a real dependency of the mesh operating and not of the control plane starting — and it is the second that the word means. The substrate is now exactly what the bundle raises, which is the strongest form the list can take: checkable by counting rather than by reading an argument, and the two cannot drift. The finding is not about substrates. A test with two conditions is a test only when both are asked.
2026-08-31 20:30:19 +02:00
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@@ -96,6 +96,7 @@ python3 00-META/checks/index.py            fail if stale
 - **0029** — [A network is a shape, because an action cannot be undone](0029-a-network-is-a-shape-because-an-action-cannot-be-undone.md)
 - **0030** — [Data outlives the mesh that declared it](0030-data-outlives-the-mesh-that-declared-it.md)
 - **0031** — [The control plane authenticates nobody, so identity is a module](0031-the-control-plane-authenticates-nobody.md)
+- **0033** — [The substrate is a store and a broker](0033-the-substrate-is-a-store-and-a-broker.md)

 ### What runs on them, and how it gets there