pub const LAG_BIAS: i32 = 4;Expand description
Bias added to lags so they fit an unsigned CTX_BITS-bit field.
Lags can be negative (preparation ops run before chain 0), but a hardware
field is unsigned. The timetable stores lag + LAG_BIAS, and the decode
step adds CTX_BIAS back in, so the bias cancels:
period + BIAS − (lag + BIAS) = period − lag. A compile-time assertion
below checks that every biased lag fits.