192 commits and 18 releases on 10-08 (through 3c629133). The two lessons
seen a third day keep their concrete steps in acceptance criteria 4 and 5
(git grep a reworded string, a gateway guard through the real server
stack). bbf99143's syscall.Getsid shows a cross-OS build doesn't compile
_test.go, so vet joins the checks. #1318's test that passes with the waiter
held is filed as #1358.
Ran: read both files after the edit; docs only, no code changed.