"""
Stage 666: ALIGN - Homeostatic Regulator
Scientific Principle: Control Theory / vmPFC
Function: Compares Action ($A$) against Safety Reference ($Ref_{peace}$).

Hardening:
- F5: Peace Invariant (P^2 >= 1.0)
- Safety Regulator (Critical Veto)
"""
from typing import Dict, Any
from arifos.core.engines.asi_engine import ASIEngine

ASI = ASIEngine()
PEACE_INVARIANT_TARGET = 1.0

def execute_stage(context: Dict[str, Any]) -> Dict[str, Any]:
    context["stage"] = "666"
    empathy_result = context.get("empathize_result")
    
    if not empathy_result: return context
        
    # 1. Feedback Control Loop
    result = ASI.align(empathy_result, context.get("proposed_action"))
    
    # 2. F5 Peace Check (Homeostatic Violation)
    peace_invariant = getattr(result, "peace_invariant", 0.0)
    if peace_invariant < PEACE_INVARIANT_TARGET:
        context["floor_violations"] = context.get("floor_violations", []) + ["F5: Peace Invariant Violation"]
        context["safety_veto"] = True
    
    context["align_result"] = result
    
    return context
