Desktop app Skills panel doesn't show local skills from ~/.claude/skills/

Description

The Desktop app's Customize → Skills panel only displays skills registered via the anthropic-skills: namespace (e.g., skills installed through official channels). It does not show any of the local custom skills stored in ~/.claude/skills/.

Steps to Reproduce

1. Have custom skills in ~/.claude/skills/ (in my case, 40 skills)
2. Open the Desktop app → Customize → Skills
3. Only 7 skills are shown (all from anthropic-skills: namespace)

Expected Behavior

The Skills panel should also scan and display skills from ~/.claude/skills/, since these are fully functional and can be invoked in conversations.

Actual Behavior

Only anthropic-skills:* prefixed skills appear in the UI. The 40 local skills in ~/.claude/skills/ are invisible in the panel, even though they work correctly when triggered in chat.

Environment

• Claude Code Desktop App (macOS)
• 40 skills in ~/.claude/skills/
• 7 displayed in UI (all anthropic-skills: namespace)

Impact

Users with many custom local skills have no way to browse, manage, or verify them from the desktop UI. They have to use the terminal to list what's available.