Add <prefix>A binding to display-popup with agent.sh

Enables the use of AI agents (claude, gemini) in a persistent
display-popup, backed by a tmux session, via the <prefix>A binding.

agent-cmd.sh

@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-# Wrapper that runs an agent command, then detaches if all panes in window are dead
-
-# Run the agent command (don't use set -e, agent may exit non-zero)
-"$@" || true
-
-# Brief delay to let tmux update pane status
-sleep 0.1
-
-# Count panes still running (pane_dead=0)
-# Note: our own pane counts as running since this script is executing
-running=$(tmux list-panes -F '#{pane_dead}' | grep -c '^0$' || true)
-
-# If we're the only pane still running, all others are dead - detach
-[ "$running" -le 1 ] && tmux detach-client

agent.sh

@@ -2,19 +2,6 @@
 
 set -e
 
-script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-
-# Check which agent commands are available
-agents=()
-command -v claude &>/dev/null && agents+=(claude)
-command -v opencode &>/dev/null && agents+=(opencode)
-command -v gemini &>/dev/null && agents+=(gemini)
-
-if [ ${#agents[@]} -eq 0 ]; then
-  echo "No agent commands found (claude, gemini)"
-  exit 1
-fi
-
 # Use the current directory (set via display-popup -d)
 dir="${PWD:-$HOME}"
 # Use the directory basename as window name
@@ -22,12 +9,11 @@ window_name=$dir
 
 # Create the agent session if it doesn't exist
 if ! tmux has-session -t agent; then
-  tmux new-session -ds agent -c "$dir" -n "$window_name" "$script_dir/agent-cmd.sh" "${agents[0]}"
+  tmux new-session -ds agent -c "$dir" -n "$window_name" claude
-  [ ${#agents[@]} -gt 1 ] && tmux split-window -h -t agent:0 "$script_dir/agent-cmd.sh" "${agents[1]}"
+  tmux split-window -h -t agent:0 gemini
   # Store the directory in a window option for later matching
   tmux set-window-option -t agent @agent_dir "$dir"
   tmux set-option -t agent status off
-  tmux set-option -t agent remain-on-exit on
   tmux attach-session -t agent
   exit 0
 fi
@@ -47,8 +33,10 @@ if [ -n "$target_window" ]; then
   tmux select-window -t "$target_window"
 else
   # Create a new window with agents
-  tmux new-window -t agent -c "$dir" -n "$window_name" "$script_dir/agent-cmd.sh" "${agents[0]}"
+  tmux new-window -t agent -c "$dir" -n "$window_name" claude
-  [ ${#agents[@]} -gt 1 ] && tmux split-window -h -t agent -c "$dir" "$script_dir/agent-cmd.sh" "${agents[1]}"
+  tmux split-window -h agent gemini
+  # Create a split with gemini
+  tmux split -h -t agent -c "$dir" gemini
   # Store the directory in a window option for later matching
   tmux set-window-option -t agent @agent_dir "$dir"
 fi