/insights recommends creating skills that already exist

Description

The /insights feature recommends creating custom skills/commands without checking whether they already exist. In my case, it suggested creating an /audit skill to formalize my audit workflow — but I already have /audit and /audit-loop global commands installed.

Expected behavior

The insights recommendation engine should cross-reference its "you do this a lot, make a skill" suggestions against the user's existing commands and skills before recommending them. The available skills/commands are already present in the system prompt context, so the data is there — it's just not being checked.

Steps to reproduce

1. Install a global command (e.g., ~/.claude/commands/audit.md)
2. Use that command across multiple sessions
3. Run /insights
4. Observe it recommends creating a skill for the exact workflow the existing command already handles