Merge pull request 'To-be 47 names ADR 0298: the bus's grants arrive before a walk's gate (issue 490)' (#315) from design/47-the-grants-step into main

03-DESIGN/01-to-be/47-delivery-from-commit-to-delivered.md

@@ -2,8 +2,9 @@
 layer: to-be
 status: in-progress
 code: [mesh-controller, mesh-catalog modules/mesh-delivery]
-updated: 2026-10-10
+updated: 2026-10-11
 decisions:
+  - "ADR 0298"
   - "ADR 0282"
   - "ADR 0276"
   - "ADR 0270"
@@ -181,6 +182,9 @@ shown and held to no budget. Measured on 51 walks on 2026-10-09 and 10, a leaf w
 - **The first-node gate reads by class**: three readings for a core module, as ADR 0236 decided; two for a leaf
   module with a long-running resource; one for a leaf module whose every resource is a tools bundle.
 - **A tier's first nodes are judged at once.**
+- **The bus's grants arrive before the gate** (ADR 0298): when a walk's builds change the bus's user list (a new
+  tool, subject or user), the machine holding the bus is sent that list alone, every build there kept, before
+  anything is judged; a step that would carry anything else is refused unsent and said on the gate line.
 - **Every phase is kept**: the window, the wait, the build, the send, each reading, the rest's first healthy
   report; the plan shows an expected landing time from the last seven days' medians.