Replace the hand-authored chat block (UiNineSlicePanel + inline UiChatView
+ local BuildRetailChatLines/RetailChatColor statics) with
ChatWindowController.Bind(LayoutDesc 0x21000006) — the same LayoutImporter
path as the vitals window. The controller places UiChatView (transcript) +
UiChatInput (text entry, on-submit) + UiChatScrollbar + UiChannelMenu inside
the dat-authored chrome. The dead local statics are deleted.
Wired to _commandBus (same LiveCommandBus as the ImGui ChatPanel) so
type+Enter dispatches SendChatCmd server-ward. Transcript keyboard set from
_uiHost.Keyboard (set by WireKeyboard above the chat block) for Ctrl+C/Ctrl+A.
Divergence register: added AD-28 (two-widget split vs UIElement_Text),
AP-38 (no in-element word-wrap), AP-39 (per-line colour vs per-glyph runs),
AP-40 (no opacity fade / shared vitalsDatFont), TS-30 (tab buttons no-op),
TS-31 (no squelch); updated IA-15 to cover both vitals + chat importer paths.
Build: 0 errors/warnings. Tests: 392 passed, 1 skipped (expected).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>