FuzzRelay

Relay noise, covariance and optics

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Test	What it does	Result
test_relay_cov	Over 150 relay points the post-relay covariance satisfies V + iOmega/2 >= 0 once halved into the internal convention, and cvmdi_point obeys key = betaI_AB - chi.	✅ pass
test_relay_exterior	Relay arguments outside their domains raise: a transmissivity at 0 or above 1, a lossless arm asked to carry xi, a sub-vacuum environment variance, a correlation at the positivity cap, and correlations past the uncertainty principle.	✅ pass
test_relay_noise	Over 300 two-arm attacks the equivalent noise is positive and cvmdi_least stays under cvmdi_floor; two pure-loss arms sit on the floor, and cvmdi_rate raises at the chi = 4 pole of the symmetric branch.	✅ pass
test_relay_optics	Over 400 front-end points mode_overlap lies in [0, 1], hom_visibility at most 1/2 rather than 1, relay_ports sum to the incoming flux, relay_counts lie in [0, 1] and relay_error in [0, 1/2].	✅ pass