tmux: add Codex session shortcut

dotfiles/tmux.conf

@@ -12,3 +12,8 @@ set-hook -g session-created 'run-shell "
     tmux rename-session -t \"#{session_name}\" \"$base\"
   fi
 "'
+
+# Create a new Codex session from the current pane path and switch to it.
+# Prefix + C prompts for the session name (default: "<current>-codex").
+bind-key C command-prompt -p "Codex session name:" -I "#{session_name}-codex" \
+  "new-session -d -s '%%' -c '#{pane_current_path}' 'codex --dangerously-bypass-approvals-and-sandbox' \; switch-client -t '%%'"