release

Release one or more Magus plugins. Infers the version bump from git history, bumps plugin.json and marketplace.json, commits, and after the PR merges tags the merge commit with one explicit ref per tag; CI gates the PR and publishes the dist repos. Use whenever the user says "release kanban", "release the dev plugin", "cut a new version of gtd", "bump kanban to 1.7", or hands you a batch like "release kanban and…