Minimize fzf prompt size while centering it

agent-cmd.sh

@@ -13,11 +13,21 @@ if [ ${#agents[@]} -eq 0 ]; then
   exit 1
 fi
 
+# Minimize fzf prompt size while centering it.
+width=24
+height=$((${#agents[@]} + 6))
+hmargin=$((($(tput cols) - width) / 2))
+vpad=$((($(tput lines) - height) / 2))
+[ $hmargin -lt 0 ] && hmargin=0
+[ $vpad -lt 0 ] && vpad=0
+tput cup "$vpad" 0
+
 agent=$(printf '%s\n' "${agents[@]}" | fzf \
   --prompt='agent> ' \
   --reverse \
   --border=rounded \
-  --margin=25%,30% \
+  --height="$height" \
+  --margin="0,$hmargin" \
   --padding=1)
 
 if [ -n "$agent" ]; then