Replace 16 interactive UI setup commands with pre-written profrc file
containing [ui] and [notifications] sections (~1800ms saved per test).
Replace sleep(1) + blocking waitpid with close(pty fd) → SIGHUP →
polling waitpid(WNOHANG) → SIGTERM/SIGKILL fallback chain (~4900ms
saved per test).
Remove post-stbbr_start() and post-stbbr_stop() sleeps — bind+listen
completes synchronously before stbbr_start() returns, and
pthread_join() in stbbr_stop() guarantees socket cleanup (~200ms saved).
Add PORTS_PER_GROUP=50 isolated port ranges per test group to enable
safe parallel execution of 4 groups without port conflicts.
jabber.developer2
f84ed1bf6a
