Consolidate repository skills under .agents/skills

AGENTS.md

@@ -11,8 +11,8 @@
 ## UX
 
 For any user-facing interface work, follow the
-[UX Design](skills/ux-design/SKILL.md) and
-[UX Observability](skills/ux-observability/SKILL.md) skills.
+[UX Design](.agents/skills/ux-design/SKILL.md) and
+[UX Observability](.agents/skills/ux-observability/SKILL.md) skills.
 UX is not considered complete unless the interface is both usable and measurable.
 Before considering UI work complete, apply the UX Review checklist from these skills.