- ReflexionEngine.retrieve_prompt_reflection(): searches EpisodicMemory
for historical reflections on similar task_input, returns best version
by score (defaults min_score=0.5). Non-blocking: failure → None.
- TeamOrchestrator._decompose_task: prepends historical reflection hint
to Lead's planning prompt when reflexion_engine is wired and a
high-score reflection exists. Default prompt preserved on miss/failure.
- 12 unit tests covering retrieve path (7) + decompose integration (5).
Chiguyong