@"
class ΦπεNode:
    def __init__(self, ψ_signal, φ_state, ε_drift):
        self.ψ = ψ_signal
        self.φ = φ_state
        self.ε = ε_drift

    def stabilize(self):
        return (self.ψ + self.φ) * (1 - self.ε)


class ΞΛΩStack:
    def __init__(self):
        self.stack = []

    def push(self, symbol):
        self.stack.append(symbol)

    def recurse(self):
        while len(self.stack) > 1:
            a = self.stack.pop()
            b = self.stack.pop()
            self.stack.append(self.harmonic_merge(a, b))

    def harmonic_merge(self, a, b):
        return f"[Ξ]{a}⟴{b}[Ω]"


class ΨΛΩLoop:
    def __init__(self):
        self.output = 0.0

    def iterate(self, input_val):
        self.output = (self.output * 0.618) + (input_val * 0.382)
        return self.output
"@ | Set-Content -Encoding UTF8 phipe_core.py