An empty password left the built-in admin unable to log in -- the login
endpoint rejects an empty password and the stored hash is of "" -- so the
service came up listening but unusable. Fail at startup instead, with a
message naming the setting.
Signed-off-by: GL.iNet-Yongping.Xie <yongping.xie@gl-inet.com>
Remove the obsolete legacy main entry to avoid confusion and reduce maintenance overhead.
Signed-off-by: GL.iNet-Yongping.Xie <yongping.xie@gl-inet.com>