Plugin-backed mounts keep their pinned `plugin_version` when a catalog yaml bumps `version`, so the old catalog entry is deregistered while the mount still points at it and the backend fails to start on the next leader change.
- add `mount_plugin_version` module tuning `sys/mounts/<path>/tune` to the catalog yaml version for each plugin-backed mount
- register new plugin versions before deregistering old ones (`create_before_destroy`)
- document the post-bump backend reload in the arrstack plugin yaml
- document that a versioned plugin yaml must keep `version` (removing it strands the mount on the old version)
Reviewed-on: #171
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
unkin-agent
cc298526e9