Apply PR #202's host-thread skip and duplicate vsync suppression. Give
bindings unique lifetime IDs so a retired worker cannot signal another
service's event after guest storage and kernel handles are reused. Replace
the eight-entry worker table with allocated records so rapid replacement
does not abort while retired workers wait for their next tick.
Add deterministic regression cases through real event binding and SVCs,
and document the mechanism with an updated symptom index. Both the
capacity abort and stale signal reproduce against the original PR.
Co-authored-by: Aleksandr Svidchenkov <a.svidchenkov@gmail.com>
