- Change checkpoint from echo (blocked by 'echo $*' pattern) to sleep 0
- Rewrite dispatch step to launch ONE worker at a time sequentially
instead of batching, reducing cognitive load on the model
- Simplify implementation supervisor worker parameters: always pass
default tier values (tier 1/haiku, is_first_attempt=true) and let
the worker's dispatcher mode handle escalation logic by reading
comments itself. This eliminates 14+ API calls the supervisor was
supposed to make before each dispatch cycle.
HAL9000
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