- Remove duplicate @then decorator on step_verify_peak_concurrency_limit
(caused AmbiguousStep error crashing all 8 unit test feature files)
- Rename "the subplans should have been executed in order" to
"the subplans should have been executed in sequential order" to
avoid conflict with pre-existing step in subplan_execution_steps.py
- Remove 13 additional @then step definitions that duplicated steps in
subplan_execution_steps.py; alias context.exec_result and
context.validation_error in @when steps so pre-existing steps work
- Replace two # type: ignore comments (lines 438, 453) with typed
Any variables per zero-tolerance policy
- Apply ruff format to fix formatting (long import wrapping, list comps)
- Add CHANGELOG entry and CONTRIBUTORS entry for #9555
ISSUES CLOSED: #9609
- Add ParallelSubplanScheduler class for managing parallel subplan execution
- Implement SubplanQueue for tracking pending, active, and completed subplans
- Implement SchedulerState for immutable scheduler state tracking
- Support configurable max_parallel concurrency limit (1-50)
- Support sequential, parallel, and dependency-ordered execution modes
- Automatic queuing of subplans when max_parallel limit is reached
- Parent plan blocks until all subplans complete
- Comprehensive failure handling and retry logic
- Merge strategy selection for combining subplan outputs
- Add comprehensive BDD test suite with 50+ scenarios
- Test coverage for concurrency control, queue management, and state tracking
HAL9000
CleverAgents Automation