Evals skill lacks the customization loader block its own body relies on #2334

Problem. skills/Evals/SKILL.md:79 sends identity-bound suites to LIFEOS/USER/CUSTOMIZATIONS/SKILLS/Evals/Suites/, but the skill has no ## Customization loader block, so nothing loads that directory. Other public skills carry the standard block, and SkillSystem.md:95 describes it.

Proposed change. Add the standard block after the frontmatter.

Pseudo-diff.

+## Customization
+
+**Before executing, check for user customizations at:**
+`~/.claude/LIFEOS/USER/CUSTOMIZATIONS/SKILLS/Evals/`
+
+If this directory exists, load and apply any PREFERENCES.md, configurations, or resources found there. These override default behavior. If the directory does not exist, proceed with skill defaults.

Why canon benefits. It makes the skill consistent with its own text and with the skill-system contract.