Agent Plugins 0.11.0

Agent Plugins 0.11.0

• Breaking: the marketplace identity is b10x in both formats; install as
  @b10x. An older registration is named beyond10x: remove its
  plugins and that marketplace, then register 0.11.0.
• Breaking: workspace-hygiene is retired. Claude Code installs worktree@b10x,
  a git-subdir entry pinned to Worktree 0.6.0 and its full commit; the
  plugin ships from beyond10x/worktree at the worktree binary's version.
  Codex reads worktree@worktree from the worktree repository. The skill
  workspace-hygiene:worktree is now worktree:worktree.
• agentplugins-check checks the pin's shape offline; agentplugins-check
  remote checks tag, commit, manifest version and newest release, on every
  pull request, main push and daily.