feat: support namespaced skill aliases (e.g. ce:setup)

[minsoo-web]

Problem

setup is a generic skill name that collides when multiple plugins are installed. Users who also have oh-my-claudecode (or any other plugin with a setup skill) cannot reliably invoke compound-engineering's setup via /setup.

Proposal

Support short namespace aliases so skills can be invoked as /ce:setup, /ce:review, etc. — without requiring the full compound-engineering:setup path.

This could be:

• A plugin-level alias field in plugin.json (e.g. "alias": "ce")
• Or per-skill aliases in SKILL.md frontmatter

Why it matters

• Plugin ecosystem is growing; generic names like setup, review, plan will keep colliding
• Full namespace (/compound-engineering:setup) is too verbose for daily use
• Short aliases (ce:) balance discoverability with brevity

[tmchow]

Yeah this is an issue we keep struggling with. None of the coding harnesses seem to want to acknowledge this collision well.
We went with our existing ce: prefix on our core workflow commands so they are all together when you type /ce: in Claude Code for example, so you don't just end up with an alphabetical list. This is good because it recognizes you might have many skills installed.

However, like you're pointing out, the problem is with collision across SKILL names. I wish this wasn't passed on to each plug-in developer to deal with because at it's core, within Claude Code for example, all our skills are namespaced already automatically as you noted with /compound-engineering: prefix. The problem is that when you type "/plan" if you have 10 plugins each with a plan skill, they all show up and you have to scan descriptions to see which one you want.

So by use solving it, we then have duplicate namespacing to wrestle with. If we went with a universal /ce- prefix, we then get stuff like /compound-engineering:ce-plan which isn't neecessarily bad but it just annoys me. It also then doesn't allow us to surface up the "core" workflow skills of ideate, brainstorm, plan and work in a group that we get today with only those 5 skills having the ce: prefix.

Question for you: you proposed an "alias" in frontmatter -- how does that help?