2 small remark, which I don't consider as blockers for your code, but imho are worse thinking about for further improvements in particular the part about using resolvconf.

maybe condition to the presence of /usr/bin/tic considering that it does not exist in FreeBSD 13 and it won't be MFCed

agreed

note that it is not necessary anymore to add/update this in termcap, since the last work on ncurses, terminfo installed in localbase takes precedence over termcap, so if you install the right terminfo via the sterm package then it will just work without conversion to termcap, which was the point of doing that.
see what the x11/foot package is doing.

@markj is right there about the actions

I love it, thanks!