Module quantum_state 

Quantum-inspired cognitive state for the ECC substrate.

Layers superposition and Born-rule probabilities on top of the deterministic CausalGraph. The classical path is always available via collapse() or by not using this module.

Key concepts:

• State vector |psi> over graph nodes (superposition)
• Hamiltonian H = graph Laplacian L (same as spectral analysis)
• Unitary evolution exp(-idtH) between measurements
• Born rule P(k) = |<k|psi>|^2 for measurement outcomes
• Projective collapse on evidence arrival

Structs

Complex

Complex number for quantum amplitudes (no external dep needed).

Hypothesis

A named hypothesis with an amplitude.

HypothesisSuperposition

Multiple competing hypotheses in superposition.

QuantumCognitiveState

Quantum state vector over graph nodes.

QuantumEvidenceRanking

Result of ranking a candidate evidence edge by quantum impact.