Materialize the claude-wayfinder Python venv at ${CLAUDE_PLUGIN_DATA}/venv/
and write the setup-state flag. Use when:
- User types /setup-wayfinder
- User says "set up claude-wayfinder", "install wayfinder dependencies"
- User says "wayfinder isn't working", "fix wayfinder", "repair wayfinder"
- SessionStart banner indicates setup is required and the user wants to proceed
- Plugin version bumped and re-setup needed
Do NOT trigger on casual mentions of "wayfinder" without setup/install/fix intent.
