review: natural-language review requests do not trigger the skill

Observed

In the evals/ review suite pilots (2026-09-18, two runs each), the prompts "Can you review this change before I open the PR?" (case 02-quick-off-by-one) and "Can you code review this? It adds a user search endpoint." (case 04-deep-sql-injection) never invoked /ccmagic:review. The with-plugin arm produced the same plain-prose review as the without-plugin arm: no routing line, no severity grouping, no confidence scores. Only prompts that begin with the explicit /ccmagic:review slash command ran the skill.

Expected

The skill description is "Adaptive code review ...", so a direct request to review a pasted diff should trigger it.

Likely cause

The description frontmatter in skills/review/SKILL.md describes what the skill does but not when to use it. Descriptions that name the user phrasings ("review this diff", "code review", "look over this change before I open a PR") trigger more reliably.

How to verify

Run the suite and check review-fired on cases 02 and 04, plus the routes-quick / routes-deep regex graders:

claude plugin eval . --ablation with-without --judge-model opus --no-publish