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Phase 6: Differentiating Features

Status: Completed (2026-02-09)

Goal: Capabilities not available in LangGraph or similar frameworks.

This phase is large and split into subphases:

PHASE6A.md: Causal tracing + counterfactual replay
PHASE6B.md: Adaptive retry + cost-aware execution
PHASE6C.md: Semantic versioning + differential testing + live inspection + speculative execution

Dependencies: