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What changes were proposed in this pull request?

TBD

How was this PR tested?

  • Tests have Added for the changes
  • Production environment verified

…ality control

Add native Gremlin simplePath() support to prevent pathological cycles in graph traversals. The implementation uses LLM-guided decision-making and AIMD confidence penalties rather than hard-coded restrictions, staying true to the system's learning philosophy.

Key changes:
- Add simplePath() step to Gremlin state machine for V, E, and P states
- Implement per-request path history tracking in TraversalExecutor
- Add cycle detection with configurable threshold and penalty modes
- Enhance LLM Oracle prompts to recommend simplePath() for exploration goals
- Add recent decision history context to improve LLM decision quality
- Update configuration with CYCLE_PENALTY and CYCLE_DETECTION_THRESHOLD settings
- Document design rationale and rejected alternatives in architecture.md
- Add test case for simple path traversal validation
…ulations

- Updated MetricsCollector to use Optional types for match_type, parent_node, parent_step_index, edge_label, sku_id, and decision parameters.
- Enhanced EVALUATOR documentation to clarify evaluation phases and scoring mechanisms, including coverage rewards and penalties for cache misses.
- Modified test cases in test_execution_lifecycle.py to align with new metrics structure and added tests for simple path execution.
- Improved test coverage in test_gremlin_step_state_machine.py and test_lifecycle_integration.py to validate state transitions and integration with Gremlin state machine.
- Refined threshold calculation tests to ensure monotonicity and boundary conditions.
- Added dynamic execution environment constraints in documentation to clarify step legality in relation to current state and schema.
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