Quantum Measurement Test Bench (QMCTB-01): Detector-Plane Causality Benchmark

This release introduces QMCTB-02, extending the Quantum Measurement Stack (QMS) with a detector coherence transfer benchmark. QMCTB-02 measures interference visibility as a function of detector phase noise (σ), extracting: σ_c: critical coherence threshold k: transition sharpness V_low: incoherent baseline R²: fit quality QMCTB-01 remains the authoritative benchmark for detector-plane causality. QMCTB-02 complements it by quantifying how detector coherence governs observable interference. Artifacts: sigma_sweep.csv fit_params.csv qmctb02_final.png