The bridge could only be installed by self-building its source code,
and its upstream repository (on src.miscworks.net) has become
unreachable (the Internet Archive last saw it alive in May 2026),
making installation impossible. The bridge was also based on the
long-unmaintained node-kakao library and carried a warning that using
it may get KakaoTalk accounts banned.

The playbook catches leftover matrix_appservice_kakaotalk_* variables
and points users to the manual uninstallation instructions.

Related to #5068

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>