Some tools (herdr) don't use tmux's setenv -g to broadcast SSH_AUTH_SOCK to new panes. Refresh the symlink when a real socket is inherited, then always export the symlink path so child shells in new panes can find it.
Some tools (herdr) don't use tmux's setenv -g to broadcast SSH_AUTH_SOCK to new panes. Refresh the symlink when a real socket is inherited, then always export the symlink path so child shells in new panes can find it.