Wait for child process tree shutdown before forcing kill

- add `childTreeGracePeriodMs` constant for shutdown timing
- await grace period after `TERM` before sending `KILL` to avoid dev process leaks
310fd0b187Julius Marminge committed on 3/4/2026, 5:58:22 PM· committed by Julius Marmingeparentdb94743
1 file changedLine totals unavailable