[BUG] Plugin skills not appearing in `/` menu after v2.1.110 update — only `schedule` shows

Description

After updating to Claude Code v2.1.110 (released 2026-04-16), the Claude Desktop app on macOS stops showing most plugin-provided skills in the / command menu. Only schedule (from the scheduled-tasks built-in) appears. Skills from enabled plugins (codex, claude-hud, frontend-design, etc.) are no longer surfaced in the Desktop UI.

CLI (claude command in terminal) works correctly — all skills from enabled plugins load as expected.

This is a regression — skills were visible in the Desktop app's / menu on 2026-04-15 (prior version). Only appeared after the 04/16 auto-update to v2.1.110.

Environment

• Claude Code version: 2.1.110
• Platform: macOS (Darwin 25.4.0), Claude Desktop app
• Enabled plugins:
• claude-hud@claude-hud
• codex@openai-codex
• frontend-design@claude-plugins-official
• github@claude-plugins-official
• context7@claude-plugins-official
• ~/.claude/skills/ is empty (all skills come via plugins)
• ~/.claude/commands/ does not exist

Expected Behavior

The / menu in Claude Desktop should list skills from all enabled plugins, e.g.:

• codex:setup, codex:rescue
• claude-hud:setup, claude-hud:configure
• frontend-design:frontend-design
• etc.

Actual Behavior

Only schedule appears in the / filter. No plugin-namespaced skills are shown. Plugin tools (MCP-backed, like context7 and github) still work correctly — only skill discovery is broken.

Steps to Reproduce

1. Install Claude Desktop app, update to v2.1.110
2. Enable several plugins that provide skills (e.g., codex@openai-codex, claude-hud@claude-hud)
3. Open a new chat in Desktop app, type /
4. Observe: only schedule appears; plugin-namespaced skills are missing
5. Switch to CLI (claude in terminal) — all skills load correctly

Related

• #48820 — Global commands from ~/.claude/commands/ not appearing in slash command menu (same root cause likely — skill/command discovery broken in Desktop app after v2.1.110)