o: set tmux mouse option globally

Use -g instead of -t to apply mouse support to all tmux sessions.

data/scripts/o

@@ -309,7 +309,7 @@ cmd_tui() {
 
     # Layout: chat (top 80%), prompt (bottom 20%)
     tmux new-session -d -s "$tmux_session" -c "$HOME"
-    tmux set-option -t "$tmux_session" mouse on
+    tmux set-option -g mouse on
     tmux send-keys -t "$tmux_session" "o $s/$a log -n 1000 | grep -v '\\[\\[\\[.*\\]\\]\\]' | grep -v '^\`\`\`'; o $s/$a read chat" Enter
 
     tmux split-window -t "$tmux_session" -v -l 20%