audit(glossary): close cycle — glossary skill drift-clean

Cycle-close tidy for the glossary-skill cycle (59c2f4b..4fd5408).

Architect drift review (sole gate — repo ships no
.claude/dev-cycle-profile.yml, so commands.regression is empty and the
regression step is a documented no-op):

- [medium] FIXED. docs/agent-template.md said the Iron Law is rendered
  'as a numbered list' (the schematic placeholder at l.37 and the prose
  at the § Iron Law section), but all 13 existing agents render it as a
  code-fenced block of short imperative lines — and the cycle's new
  glossary-extractor.md correctly followed that universal convention. So
  the drift was the template wording, stale relative to every one of its
  instances, not the new file. Resolution: align the template to reality
  (both spots now say 'a code-fenced block of short imperative lines').
  The new agent file was carry-on — 'fixing' it to a numbered list would
  have made it the lone deviant among 14 agents, i.e. introducing drift,
  not removing it.

- [low] CARRY-ON. README now classes issue/glossary as 'utility skills'
  but that taxonomy is not mirrored in issue/SKILL.md's or
  glossary/SKILL.md's own frontmatter. Accepted as low-severity: the
  invocation-class label is a README-level descriptor; mandating every
  skill self-declare its class in frontmatter is gold-plating with no
  consumer. Revisit only if a tool starts keying off a per-skill class.

What holds: single-sourcing preserved (the new skill cites
glossary-convention.md and restates no rule; paths.glossary semantics
defer to profile-schema.md); authority consistent across the boss
sentence, the convention, and the skill's Authority section; the
utility-vs-phase distinction held (no claim that glossary is a pipeline
phase); glossary-extractor.md conforms to agent-template.md.

Cycle is drift-clean. Not a milestone close (no milestone fieldtest run;
see docs/pipeline.md § Milestone-close gate).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/agent-template.md

@@ -34,7 +34,8 @@ directories directly — context curation lives at the skill level>
 
 ## Iron Law
 
-<the non-negotiable rules of this role, as a numbered list>
+<the non-negotiable rules of this role, as a code-fenced block of
+short imperative lines>
 
 ## The Process
 
@@ -149,8 +150,8 @@ was told.
 
 ### Iron Law
 
-Numbered list of the non-negotiable rules. These are the rules
-the agent will violate if it rationalises. Calibrate to past
+A code-fenced block of short, imperative rules. These are the
+rules the agent will violate if it rationalises. Calibrate to past
 failure modes — abstract rules don't land; rules anchored to a
 named past mistake do.