* Strengthen plain-node-entry-guard with entry name validation
- Add buildStart hook to validate guarded entry names exist in rollup
inputs, preventing stale names from silently stopping guards
- Extend electron require detection to subpaths (electron/main, etc)
- Improve smoke test signal/exit handling and use constants
- Add comprehensive tests for entry validation and new behaviors
* Add SIGKILL escalation to plain-node-entry-guard timeout
Switch from spawnSync to async spawn to properly handle daemons that trap
SIGTERM. spawnSync's timeout only sends the signal and waits, so a daemon
that ignores SIGTERM causes the build to hang. The new runDaemonEntry
function escalates to SIGKILL after a grace period to enforce the deadline.
Configurable timeouts and grace periods via SmokeTimings type; closeBundle
hook becomes async to support the change.
Jinjing
Brennan Benson