Custom skill not appearing in slash commands or Settings > Skills UI

Description

Custom skill (kuma-picker) at ~/.claude/skills/kuma-picker/SKILL.md is loaded by Claude (appears in system prompt, auto-triggers correctly), but does NOT appear in:

1. Slash command autocomplete (/kuma-picker)
2. Settings > Skills UI

Expected Behavior

Valid custom skills should be visible in both slash commands and Skills UI.

Actual Behavior

• Skill IS recognized internally (system prompt, auto-trigger works)
• Skill is NOT visible in slash command list or Skills settings

Environment

• Windows 11 Pro 10.0.26200
• Claude Code (latest)
• Skill location: ~/.claude/skills/kuma-picker/SKILL.md

Steps to Reproduce

1. Create custom skill at ~/.claude/skills/<name>/SKILL.md
2. Start Claude Code
3. Skill loads and auto-triggers correctly
4. / autocomplete — skill not found
5. Settings > Skills — skill not listed