Persist managed plugins in Claude Code's personal skills directory so strict-parser subcommands do not receive injected --plugin-dir arguments. Retain version-gated legacy behavior for older and unversioned packages.
Claude skills are only found when using `SKILL.md` entrypoints.
Attribute names should be used for the directory structure, not the
filename.
Signed-off-by: Austin Horstman <khaneliman12@gmail.com>
