Refactor to reduce config in group_vars

roles/scripts/tmux-management

@@ -1,11 +1,20 @@
 #!/usr/bin/env bash
 # Open a tiled tmux window with one pane per host each in its own tmux session.
 # The local session is always the last (active) pane.
-
 set -euo pipefail
 
+# Accept hostnames from command-line arguments
+if (( $# > 0 )); then
+  HOSTS=("$@")
+else
+  # Default hostnames in the desired pane order
+  HOSTS=(
+    workstation
+    laptop
+  )
+fi
+
 # Configuration (override with env vars if desired)
-HOSTS=(workstation laptop) # hosts in pane order
 REMOTE_SESSION=${REMOTE_SESSION:-main} # tmux session on remotes
 SYNCHRONIZE=${SYNCHRONIZE:-1} # 1 = broadcast keystrokes
 INCLUDE_LOCAL=${INCLUDE_LOCAL:-1} # 0 = skip local host
@@ -56,7 +65,8 @@ open_cmd() {
       printf 'tmux -L %q new -A -s %q' "${SESSION}_local" "$REMOTE_SESSION"
     fi
   else
-    printf 'ssh -t %q tmux new -A -s %q' "$tgt" "$REMOTE_SESSION"
+    # SSH with keepalive settings for faster broken pipe detection
+    printf 'ssh -o ServerAliveInterval=20 -o ServerAliveCountMax=3 -t %q tmux new -A -s %q' "$tgt" "$REMOTE_SESSION"
   fi
 }
 
@@ -74,8 +84,8 @@ tmux select-layout -t "$SESSION:0" tiled
 # Keep panes visible when commands exit
 tmux set-option -t "$SESSION:0" remain-on-exit on
 
-# Auto-respawn any pane whose command dies
-tmux set-hook -t "$SESSION" pane-died "run-shell 'tmux respawn-pane -k -t #{pane_id}'"
+# Reconnect dead panes when user focuses on them
+tmux set-hook -t "$SESSION" pane-focus-in "if -F '#{pane_dead}' 'respawn-pane -k -t #{pane_id}'"
 
 # Activate the last pane (local host)
 local_index=$(( ${#TARGETS[@]} - 1 ))