TrustModel

Trusting the receiver may only ever pay, and costs nothing when ideal

2/2 passed in 399ms

Test	What it does	Result
test_trust_is_free	At eta = 1 and v_el = 0 the trusted and untrusted cv_rate outputs are bit-identical over 2000 random configurations.	✅ pass
test_trust_never_pays	Over 20000 random configurations (V_A across six decades, T across four, xi and v_el to 1 SNU, eta from 0.01 to 1, both detectors) the untrusted rate never exceeds the trusted one, slack 0.	✅ pass