Hoping to clarify the necessity of HTTPD SIGUSR & specifically the following 
error located in the daemon log. 

httpd[59510]: parent_sig_handler: reopen requested with SIGUSR1

At this point it appears that SIGUSR1 is a definable signal.
However the following command forcibly closes the current login & disconnects 
the current user.

doas kill -SIGUSR1 $PPID

The behavior of the above command leads me to suspect that perhaps pledge is 
interacting with process & signals.
Regards
Patrick

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