0.22.9

• Track Worktree 0.18.0 and Connectors v0.48.0 after agentplugins-check tools; AEP 0.71.2, ESS
  0.59.0 and Metaharness 0.9.3 are still the newest.
• b10x installs Connectors from its checksummed release archive from v0.48.0, the first release
  that carries one (Linux and macOS, x86-64 and arm64), and still builds an older, source-only
  release with cargo install. agentplugins-check tools checks the released connectors
  binary's help as well as its source contract.
• worktree:managing-worktrees follows 0.16.0 to 0.18.0: discard-cache, finish --discard-cache and sweep delete every ignored entry unless the tree root's .worktreekeep
  keeps it (ignored-output, keep-file-invalid); nested repositories, mount points and
  unreadable entries stay; Flutter build output is recognised; archive reads the keep file; the
  prune-archives --strip-build-output strip also removes ignored output. The wave cleanup step,
  the governed-plan tutorial and the worktree plugin page no longer say records under target/
  are kept.
• Connectors skills and pages name v0.48.0: prebuilt archives, the macOS quarantine and keychain
  notes, setup check's os and custody_backend, the Slack chat.postMessage and
  conversations.open writes under approval, and the migration of a {"literal": "true"} guard
  to {"boolean": true}.
• The eval workflow runs Worktree 0.18.0 and Connectors v0.48.0, the latter from its archive.