ADR 0275, to-be 53: the issue tracker's module is mesh-issues, holding the seat issue-tracker

The operator named the module on 2026-10-10: the mesh's own parts carry the
mesh- prefix, and the seat is the role. A dated insight in ADR 0275 says so,
and that compare-and-set state was already in the runtime (ADR 0259): slice 1
added the SDK's Increment. To-be 53 and the glossary say the same, and the
design is handed to mesh-catalog and mesh-sdk (in progress).

00-META/glossary.md

@@ -540,8 +540,8 @@ Not a domain of the mesh but of the way it is built, listed because its words me
   one at the level of design or governance also has a report in `04-ISSUES/` under the same number
   ([ADR 0275](../02-DECISIONS/0275-the-mesh-numbers-and-tracks-its-issues-in-a-module-of-its-own-and-hq-keeps-only-the-narrative-of-a-design-or-governance-issue.md)).
   An **incident** is a past event that taught a rule.
-- **issue tracker** — the module that holds the mesh's issues and hands out their numbers, named `issues`,
-  holding the seat `issue-tracker` ([53 — The issue tracker](../03-DESIGN/01-to-be/53-the-issue-tracker.md)).
+- **issue tracker** — the role that holds the mesh's issues and hands out their numbers: the seat `issue-tracker`,
+  held by the module `mesh-issues` ([53 — The issue tracker](../03-DESIGN/01-to-be/53-the-issue-tracker.md)).
   Not hits's *item*; bare *ticket* is a homonym (see [Homonyms](#homonyms)).
   *Not:* ~~ticketing system~~ (hq), ~~ticket system~~ (hq)
 - **hq check** — one of `00-META/checks/`, run by `merge-check.sh` as this repository's check.