DeAstroStacker skill 2.2.1

The skill DeAstroStacker installs into an AI client, version
2.2.1.

Fetched by the app itself: Settings → AI clients and the command
line → Skill, on the row of the client you want taught. The zip is
also what Claude Desktop wants uploaded by hand, since it has no
folder to write to.

This tag always holds the newest skill of its major version; it is
replaced in place rather than released beside, so the address the
app reads never goes stale. Each major has its own tag - skill for
1.x, skill-N after - and an app only reads the one its own skill
belongs to.