Renumber the records 1 to 23

The consolidation left a sparse sequence -- 1, 4, 6, 7, 9, 10, 12, 15, 16, 18,
19, 25, 34, 35, 36, 37, 40, 42, 44, 45, 48, 49, 58 -- where the gaps were only
the archaeology of what used to be there.

Renumbered contiguously. Renames run in ascending order, so every target number
is already free and no two files ever collide.

The reference rewrite is one simultaneous pass rather than a sequence of
replacements. Numbers moved into slots other numbers were vacating -- the node
host went 37 to 16 while the lab went 16 to 9 -- so replacing one at a time
would have cascaded and silently pointed things at the wrong record.

Seven plain-text references survived the merges as prose rather than links,
naming records that no longer existed: the enrolment token, the link boundary,
what a declaration is, reachability, the repository structure. Each mapped to
the consolidated record that now holds it.

Verified rather than assumed: every [ADR NNNN](path) link now has matching text
and target, checked across the whole repository, and the checker passes.

Frontmatter `consolidates:` lists dropped -- they named records that are gone,
and each consolidated record already says in prose what it absorbed.

03-DESIGN/01-to-be/04-lab-installation.md

@@ -4,15 +4,15 @@ status: designed
 code: [mesh-lab]
 updated: 2026-08-24
 decisions:
-  - 02-DECISIONS/0016-the-lab.md
-  - 02-DECISIONS/0058-delivery.md
+  - 02-DECISIONS/0009-the-lab.md
+  - 02-DECISIONS/0023-delivery.md
 ---
 
 # Installing the lab on a clean machine
 
 The lab has prerequisites — a virtualisation daemon, copy-on-write storage, a pool, an identity
 permitted to talk to it — and it cannot get them from the mesh, because it is where the mesh is
-built ([ADR 0016](../../02-DECISIONS/0016-the-lab.md)).
+built ([ADR 0009](../../02-DECISIONS/0009-the-lab.md)).
 
 So the lab needs an install path of its own. This describes it, and the shape it has to take is
 determined by two failures observed while measuring
@@ -55,7 +55,7 @@ and unbounded at worst.
 
 **The lab refuses to run degraded.** It does not warn and continue: a warning about a slow inner
 loop is read once and ignored forever, and the loop stays slow. This is
-[ADR 0058](../../02-DECISIONS/0058-delivery.md) applied where the failure is
+[ADR 0023](../../02-DECISIONS/0023-delivery.md) applied where the failure is
 performance rather than an error.
 
 ## Two ways the prerequisites arrive