One `npx skills add ssh://gitea/agent-skills/skills` now offers all five
skills in a grouped multi-select list. Groups come from
.claude-plugin/marketplace.json: writing-clarity, windows-tools,
image-to-data.
skills/ holds real copies rather than submodules or pointers. The installer
clones without --recurse-submodules (git.ts:241), so a submodule directory
would arrive empty, and it skips remote sources declared in a marketplace
manifest (plugin-manifest.ts:89), so only in-repo paths are resolvable.
Grouping applies only to skills listed explicitly under a plugin's skills
array with a ./-prefixed path (plugin-manifest.ts:147-151); anything not
listed falls into "Other".
think-twice and teach-me share a group because teach-me's SKILL.md points at
double-check.md, self-contain.md and style.md inside the think-twice
directory. Installing teach-me alone leaves those pointers unresolved.
Syncing from the five upstream repos is manual for now.
