Couple workers to orchestrator runtime#97
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Summary: - Supervise TaskSupervisor and Orchestrator as a one-for-all runtime. - Route agent task starts and stops through the owned supervisor. - Add a real dispatch regression for restart redispatch overlap. Rationale: - A sibling task supervisor let workers outlive the scheduler state that claimed them after an orchestrator restart. - Encoding lifecycle ownership in supervision avoids duplicate work without adding cleanup sweeps or durable leases. Tests: - mise exec -- mix test --repeat-until-failure 10 test/symphony_elixir/core_test.exs:228 - mise exec -- mix test test/symphony_elixir/core_test.exs test/symphony_elixir/orchestrator_status_test.exs - mise exec -- make all Co-authored-by: Codex <codex@openai.com>
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Context
Orchestrator restarts reset in-memory claims, but sibling TaskSupervisor workers could survive and be redispatched concurrently.
TL;DR
Supervise agent workers and the orchestrator as one restart unit.
Summary
:one_for_all.Alternatives
Test Plan
make -C elixir allmise exec -- mix test --repeat-until-failure 10 test/symphony_elixir/core_test.exs:228mise exec -- mix test --cover --seed 155984 --max-cases 8mise exec -- mix test test/symphony_elixir/core_test.exs test/symphony_elixir/orchestrator_status_test.exs