docs: port TUI roadmap to cl-tty, mark Emacs as secondary client

v0.8.0: Information Radiator now built on cl-tty v1.1.0. Minibuffer
uses cl-tty Dialog stack. New TODO items: conversation view (ScrollBox
+ Markdown), command palette (Select), sidebar (slot system), status bar
(Box + Theme), keybindings (keymap).

v0.9.1: Emacs is now an optional secondary client, not the primary
bridge. cl-tty is the primary TUI.

org/channel-tui-state.org

@@ -97,7 +97,10 @@ theme presets — defined but unused.
            :view-status :view-chat :view-input :redraw
            :on-key :on-daemon-msg :send-daemon
            :connect-daemon :disconnect-daemon
-           :*tui-theme* :theme-color))
+           :*tui-theme* :theme-color
+           :*slash-commands* :open-minibuffer :minibuffer-handle-key
+           :view-conversation :render-user-msg :render-agent-msg
+           :render-sys-msg :render-tool-call :render-gate-trace))
 (in-package :passepartout.channel-tui)
 
 (defvar *state* nil)
@@ -280,14 +283,7 @@ See *tui-theme-presets* for named presets (dark, light, solarized, gruvbox).")
               :search-mode nil :search-query ""           ; v0.7.2
               :search-matches nil :search-match-idx 0
               :sidebar-visible nil                        ; v0.8.0
-              :minibuffer-mode nil :minibuffer-selected-idx 0 ; v0.8.0
-              :minibuffer-filter ""                         ; v0.8.0
-              :wizard-mode :provider-list                  ; v0.9.0
-              :wizard-selected-idx 0 :wizard-input ""        ; v0.9.0
-              :wizard-error nil                              ; v0.9.0
-              :wizard-providers nil :wizard-current-provider nil ; v0.9.0
-              :wizard-cascade '(:fg-prob nil :bg-prob nil :fg-det nil :bg-det nil) ; v0.9.0
-              :wizard-cascade-slot :fg-prob                  ; v0.9.0
+              :expand-tool-calls nil                      ; v0.8.0
               :dirty (list nil nil nil))))
 #+end_src