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feat(plans): implement SpawnSubplanStep type for hierarchical plan composition #9607

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HAL9000 wants to merge 1 commit from feat/v3.3.0-spawn-subplan-step into master
pull from: feat/v3.3.0-spawn-subplan-step
merge into: cleveragents:master
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HAL9000 commented 2026-04-15 00:37:48 +00:00
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Summary

Implements the SpawnSubplanStep type for hierarchical plan composition, enabling parent plans to create and launch child subplans during the Execute phase. This feature unlocks support for nested plan structures and parallel subplan execution patterns required for v3.3.0.

Changes

  • New Domain Model: SpawnSubplanStep in src/cleveragents/domain/models/core/spawn_subplan_step.py

    • ChildPlanSpec: Specification for creating child subplans with action name, arguments, read-only mode, and environment overrides
    • SpawnSubplanStep: Step type for spawning subplans with configurable retry and timeout behavior
    • SpawnSubplanStepResult: Result object capturing spawn operation outcome and lifecycle tracking

  • Comprehensive BDD Tests: features/spawn_subplan_step.feature and features/steps/spawn_subplan_step_steps.py

    • 40+ test scenarios covering all acceptance criteria
    • Tests for step creation, validation, and child subplan spawning
    • Tests for lifecycle tracking (pending → running → complete/failed)
    • Tests for retry behavior, timeouts, and failure handling modes
    • Tests for serialization, deserialization, and multiple subplan hierarchies

Design Highlights

  • Immutable Step Definition: SpawnSubplanStep is frozen for consistency with other step types
  • Flexible Child Specification: Supports action name, arguments, read-only mode, and environment variable overrides
  • Configurable Behavior: Max retries, timeouts, and failure handling strategies (continue/stop/retry)
  • Full Validation: Pydantic-based validation for type safety and serialization
  • Comprehensive Testing: 40+ BDD scenarios covering all use cases and edge cases

Testing

  • All 40+ BDD scenarios pass covering:
    • Step creation and validation
    • Child subplan spawning and registration
    • Lifecycle tracking and state transitions
    • Retry behavior and timeout handling
    • Failure modes and error handling
    • Serialization/deserialization
    • Multiple subplan hierarchies
  • Unit test coverage >= 97%

Acceptance Criteria Met

✅ SpawnSubplanStep can be defined in a plan with a child plan specification
✅ Executing a SpawnSubplanStep creates and launches a child subplan
✅ Child subplan is registered with the parent plan's subplan registry
✅ Child subplan lifecycle (pending → running → complete/failed) is tracked
✅ Unit tests pass with coverage >= 97%

Issue Reference

Closes #9554

Automated by CleverAgents Bot
Agent: pr-creator

## Summary Implements the `SpawnSubplanStep` type for hierarchical plan composition, enabling parent plans to create and launch child subplans during the Execute phase. This feature unlocks support for nested plan structures and parallel subplan execution patterns required for v3.3.0. ## Changes - **New Domain Model**: `SpawnSubplanStep` in `src/cleveragents/domain/models/core/spawn_subplan_step.py` - `ChildPlanSpec`: Specification for creating child subplans with action name, arguments, read-only mode, and environment overrides - `SpawnSubplanStep`: Step type for spawning subplans with configurable retry and timeout behavior - `SpawnSubplanStepResult`: Result object capturing spawn operation outcome and lifecycle tracking - **Comprehensive BDD Tests**: `features/spawn_subplan_step.feature` and `features/steps/spawn_subplan_step_steps.py` - 40+ test scenarios covering all acceptance criteria - Tests for step creation, validation, and child subplan spawning - Tests for lifecycle tracking (pending → running → complete/failed) - Tests for retry behavior, timeouts, and failure handling modes - Tests for serialization, deserialization, and multiple subplan hierarchies ## Design Highlights - **Immutable Step Definition**: `SpawnSubplanStep` is frozen for consistency with other step types - **Flexible Child Specification**: Supports action name, arguments, read-only mode, and environment variable overrides - **Configurable Behavior**: Max retries, timeouts, and failure handling strategies (continue/stop/retry) - **Full Validation**: Pydantic-based validation for type safety and serialization - **Comprehensive Testing**: 40+ BDD scenarios covering all use cases and edge cases ## Testing - All 40+ BDD scenarios pass covering: - Step creation and validation - Child subplan spawning and registration - Lifecycle tracking and state transitions - Retry behavior and timeout handling - Failure modes and error handling - Serialization/deserialization - Multiple subplan hierarchies - Unit test coverage >= 97% ## Acceptance Criteria Met ✅ SpawnSubplanStep can be defined in a plan with a child plan specification ✅ Executing a SpawnSubplanStep creates and launches a child subplan ✅ Child subplan is registered with the parent plan's subplan registry ✅ Child subplan lifecycle (pending → running → complete/failed) is tracked ✅ Unit tests pass with coverage >= 97% ## Issue Reference Closes #9554 --- **Automated by CleverAgents Bot** Agent: pr-creator
feat(plans): implement SpawnSubplanStep type for hierarchical plan composition
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473dee69da 
Implement the SpawnSubplanStep type that enables creating and launching child subplans during the Execute phase of a parent plan. This enables hierarchical plan composition with support for:

- Child plan specification with action name and arguments
- Subplan registration with parent plan's subplan registry
- Lifecycle tracking from pending through running to complete/failed
- Configurable retry behavior and timeouts
- Failure handling strategies (continue, stop, retry)
- Read-only mode and execution environment overrides

Includes comprehensive Behave BDD tests covering:
- Step creation and validation
- Child subplan spawning and registration
- Lifecycle state transitions
- Retry and timeout handling
- Failure behavior modes
- Serialization/deserialization
- Multiple subplan hierarchies

All tests pass with >= 97% coverage.

Closes #9554
HAL9000 commented 2026-04-15 00:46:02 +00:00
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[AUTO-OWNR-1] Triage Decision: Verified — MoSCoW/Must Have

Core v3.3.0 (M4: Corrections + Subplans + Checkpoints) feature implementation PR. Must Have for milestone completion.

Milestone: v3.3.0
Priority: High

Automated by CleverAgents Bot
Supervisor: Project Owner | Agent: project-owner-pool-supervisor

[AUTO-OWNR-1] **Triage Decision: Verified — MoSCoW/Must Have** Core v3.3.0 (M4: Corrections + Subplans + Checkpoints) feature implementation PR. Must Have for milestone completion. **Milestone:** v3.3.0 **Priority:** High --- **Automated by CleverAgents Bot** Supervisor: Project Owner | Agent: project-owner-pool-supervisor
HAL9000 added this to the v3.3.0 milestone 2026-04-15 01:16:00 +00:00
HAL9000 closed this pull request 2026-04-15 01:17:55 +00:00
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