v0.8.0: force initial redraw before entering input loop

Add explicit (redraw be w h) call before the main loop so the TUI
renders immediately on startup, without waiting for the first
100ms input poll cycle to complete.

org/channel-tui-main.org

@@ -924,6 +924,8 @@ Returns T on success, nil on failure. Does NOT wait or retry."
                          do (connect-daemon)
                          (unless (st :connected) (sleep 5))))
                   :name "daemon-auto-connect"))
+            ;; Force initial render before entering input loop
+            (redraw be w h)
             (loop while (st :running) do
                (dolist (ev (drain-queue))
                  (cond