fix: make help tab read-only (stty -echo -icanon)

sethmux-help.sh

@@ -1,7 +1,10 @@
 #!/bin/bash
 # sethmux cheat sheet — runs in the persistent help tab
+# Read-only: all keyboard input is silently consumed
 # Redraws on terminal resize via trap
 
+stty -echo -icanon 2>/dev/null
+
 draw() {
   clear
   COLS=$(tput cols)
@@ -75,5 +78,5 @@ draw() {
 trap draw WINCH
 draw
 
-# Stay alive, redraw on resize
-while true; do sleep 86400; done
+# Read-only: consume all stdin silently, redraw on resize
+while IFS= read -r -s -n 1 -t 86400 _ 2>/dev/null; do :; done

sethmux-start.sh

@@ -12,6 +12,7 @@ tmux new-window -t "$SESSION" -n "git"
 tmux new-window -t "$SESSION" -n "run"
 tmux new-window -t "$SESSION" -n "logs"
 tmux new-window -t "$SESSION" -n "help" "/opt/sethmux/sethmux-help.sh"
+tmux set-option -t "$SESSION:help" -p remain-on-exit on
 tmux select-window -t "$SESSION:1"
 
 # Ensure logs dir exists