Add optional finalization_ms to keep observing a captured root after SIGTERM, record the actual finalizer exit and each signal attempt, and escalate once when needed. Bind the initial root identity to captured ownership and preserve observations through cleanup uncertainty.
Fixes#1253.
Co-authored-by: Mykola Dementiev <[email protected]>
Co-authored-by: N0zoM1z0 <[email protected]>
