ums: skill-builder must regenerate codex-skills wrappers + run validate before push

[d-morrison]

A new skill needs its generated codex-skills// wrapper committed alongside
the source, or the validate CI job fails on the wrapper-sync check. The Ship-it
steps didn't mention it — surfaced while adding the check-rendered-refs skill
(PR #231). Add scripts/sync-codex-skill-wrappers.py + scripts/validate-skills.py
to the commit block and a paragraph explaining why.

Co-Authored-By: Claude Opus 4.8 noreply@anthropic.com

[d-morrison]

Driving this PR to clean — back off until done.

[d-morrison]

ARD round 1

Finding	Disposition
Parenthetical quoted the success string Codex skill wrappers are in sync, not what shows in a red CI log	Addressed — now quotes the failure line Codex skill wrappers are out of sync: (sync script line 215).
git add block staged codex-skills/<name> but omitted the alias dir/wrapper	Addressed — block now stages skills/<alias>/SKILL.md + codex-skills/<alias> too.

Pushed in e2b2cca. Re-review runs on the push.

[claude]

Claude finished @d-morrison's task in 1m 18s —— View job

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Re-review after e2b2cca

• Read current diff
• Verify fix 1: failure string now quoted
• Verify fix 2: alias dir staged in git add block
• Check for new issues

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Both findings from the prior review are correctly addressed. No new issues found.

Fix 1 — verified. skills/skill-builder/SKILL.md lines 193–194 now read:

the validate CI job fails if it's out of sync (the red log reads Codex skill wrappers are out of sync:).`

This matches sync-codex-skill-wrappers.py line 215 (print("Codex skill wrappers are out of sync:")), the actual failure output. The success string (Codex skill wrappers are in sync) no longer appears in the prose.

Fix 2 — verified. The git add block (lines 179–186) now stages both canonical and alias paths:

git add skills/<name>/SKILL.md codex-skills/<name> \
        skills/<alias>/SKILL.md codex-skills/<alias> \
        memories/preferences.md

The inline comment (incl. the generated wrappers, and the alias dir if you made one) makes the conditional nature clear for skills without aliases.

No new findings. PR is clean.

[d-morrison]

Done — PR is fully clean and free.