The n8n chart (riatlas/chart__n8n) doesn't support startupProbe at all -
my earlier fix set a field the chart ignores, so the liveness probe was
still killing the container ~40s into startup (exitCode 143, confirmed
live via repeated crashloops even after the first 'fix'). n8n takes
longer than that to bind :5678 on the VPS's more modest hardware.
Widened readiness/liveness directly instead: ~190s total runway before
a liveness kill.