add-ai-feature-policy

What problem does it solve?

This description explains how to add a new deck-aware AI feature to phase-ai, including its DeckFeatures axis and companion policies (TacticalPolicy plus optional MulliganPolicy), and how to wire it into registries, tests, and plan curves to enable a single-commit ship.

Core Features & Use Cases

• Defines a new Feature struct with axes, thresholds, and parts-based predicates for live classification via detect() and policy evaluation.
• Provides wiring guidelines across crates (features/mod.rs, session.rs, policies/mod.rs, registry wiring, and plan/curves) to integrate the feature end-to-end.
• Includes a comprehensive test plan template and safeguards to avoid CR drift, per-copy name expansion, and activation gating pitfalls.

Quick Start

Provide the feature name and axis details, then implement the feature module and wire it into the policy registry.