v0.29.0-fork.1 Lots of upstream stuff

Plus a tiny fix of my own around MCP tools. If you're disabling any from
MCP servers, this fixes the sidebar to display the correct count.
-----BEGIN SSH SIGNATURE-----
U1NIU0lHAAAAAQAAAEoAAAAac2stc3NoLWVkMjU1MTlAb3BlbnNzaC5jb20AAAAgFhbSln
9jcsTCiLgfQNQnfLwx6HkJonoGDwu1P2eRk9EAAAAEc3NoOgAAAANnaXQAAAAAAAAABnNo
YTUxMgAAAGcAAAAac2stc3NoLWVkMjU1MTlAb3BlbnNzaC5jb20AAABAYzSITcaonLC8tM
DxGl5M8qKj3hdEeUmINL8InO5OC/WYlp4nZzWSzztlH3uzZv+rccQyE5+vekgIoNKf+9rj
BQEAAED3
-----END SSH SIGNATURE-----