Joseph Doherty
c9643f68ba
v2-ci / build (push) Failing after 42s
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HandleRestartDriver stopped + respawned the child within one synchronous message handler, reusing the base actor name drv-<id>. Context.Stop is async (the child processes its own stop on its own mailbox), so the old child was ALWAYS still registered when the respawn ran — Context.ActorOf threw InvalidActorNameException deterministically on every AdminUI Restart press, crashing + restarting the host. Fix: a monotonic _childSpawnGeneration counter (single-threaded actor) feeds a -g<gen> suffix on every spawned child name, so a respawn can never collide with the still-terminating predecessor. Children are tracked by the _children dict (by IActorRef), never by actor path, so the suffix is invisible to callers. This also closes the same-shaped latent race in the reconcile path (a removed- then-readded instance, and a driver-type-change ToStop+ToSpawn in one plan). Regression test RestartDriver_respawns_the_child_without_an_actor_name_collision (verified: FAILS on the old code with the exact InvalidActorNameException, PASSES with the fix). Runtime.Tests 238/238 green. Code-reviewed (approved).