Recovers the official client's CreateChannelDialog layout so the widget
set, labels and tab order match: name/icon/password/topic/description
above Standard, Audio, Permissions and Advanced tabs.
Core gains ChannelSettings (diffed against the original so channeledit
only carries changed properties) and ChannelAdmin (channelinfo/edit,
channel permissions, the server icon store). TeamspeakConnection now
owns the event executor so it can drain queued notify events before
reading a command's result, which channelpermlist needs.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>