SurfaceReceiver

Bob's two detectors, his linear range and his detection bandwidth

6/6 passed in 0ms

Test	What it does	Result
test_partner_read	pair() hands q.attacks the two efficiencies larger first, and background() reads both dark counts.	✅ pass
test_partner_shallow	A partner carries no partner of its own, and anything but a q.ClickDetector in the slot is refused.	✅ pass
test_range_charged	full_scale() is budget.adc's ratio and bandwidth is the RIN rows', while an undeclared intensity noise is neither charged nor refused.	✅ pass
test_range_declared	The quadrature receivers default to no linear range and no bandwidth, and clip is a HALF-range: full_scale() is twice it.	✅ pass
test_range_positive	clip and bandwidth refuse zero and negatives: a receiver linear over nothing is not an idealisation of one that has a range.	✅ pass
test_symmetric_unchanged	A q.ClickDetector with no partner is the same detector twice, and its background yield is the $1-(1-d{)}^2$ q.Link already derives.	✅ pass