`claude plugin enable|disable` only toggles marketplace plugins.
Tools living as symlinks (gstack per-skill entries, emil-design-eng,
darwin-skill, find-skills) had no lever — users had to edit symlinks
by hand. The new script moves symlinks in/out of skills-disabled/
so Claude Code stops or starts scanning them.
Also removes the legacy global `skills/gstack` symlink that shadowed
per-skill entries with a duplicate top-level "gstack" skill (same
description as "browse"). gstack detection in detect-plugins.sh now
probes an individual skill instead.
plugin-advisor reads the new script's `list` command when gathering
state and emits its `enable|disable` commands in recommendations.
Co-Authored-By: Claude <noreply@anthropic.com>
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