v0.10.5: multi-line expanding input box with software blinking cursor

view-input word-wraps input at prompt-w, expanding the grey panel
upward as needed. Uses software cursor (█) in :input-fg blinking
at 2Hz via get-internal-real-time.
view-chat max-lines adapts to variable panel height via input-panel-top.
Removed terminal cursor (position-cursor, cursor-show, cursor-style).
Dialog minibuffer top now computed from input-panel-top.

org/channel-tui-state.org

@@ -23,7 +23,7 @@ All state mutation flows through event handlers in the controller.
   (:export :tui-main :st :add-msg :now :input-string
            :queue-event :drain-queue :init-state
             :view-status :view-chat :view-input :redraw
-            :position-cursor
+            :input-panel-top
            :on-key :on-daemon-msg :send-daemon
            :connect-daemon :disconnect-daemon
            :*tui-theme* :theme-color))