v0.1.6

Added

• Optional actor.principal sub-field ({ id:, label? }) on the wire,
  carrying the human a kind: "agent" or kind: "hybrid" actor is
  acting on behalf of. Drops silently if malformed; existing callers
  unaffected. Lets the server narrate agent actions as
  "Claude updated employee, on behalf of Razvan" instead of
  attributing the change to either party alone.

Internal

• Dropped a stray gemspec bump to sidekiq ~> 8.1 that landed via an
  auto-merged dependabot PR without re-resolving Gemfile.lock. Dev
  deps are back in sync with the lockfile (rails ~> 7.0,
  sqlite3 ~> 1.6, sidekiq ~> 7.0); no runtime change for customers.