chore(main): release 0.3.0

[github-actions]

🤖 I have created a release beep boop

0.3.0 (2026-07-28)

Features

• add check <name> to run the check pipeline on a named stack (4694d27)
• add mrstack agent skill and installer (208cbe9)
• add mrstack view to render named stacks with live status (6dd1bea)
• add stack remove and stack delete for full named-stack management (7edb137)
• add user-global named stacks with stack create/add/list (29b6f4e)
• require named stacks for check and cache view snapshots (e41673f)

Bug Fixes

• clean up managed git worktrees in restack tests (d34dc74)
• decode paginated glab array responses and surface transport errors (9bc0444)
• satisfy staticcheck S1009 in gitlab client test (2bdac09)
• use Vercel skills CLI instead of custom install.sh (90f8568)
• validate Homebrew formula component order on release (462bf99)

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[github-actions]

🤖 Created releases:

• v0.3.0

🌻