Add the cosine OGSE class cos-f50-T20 (50 Hz, one 20 ms period each side of the 180, edges 200 T/m/s as built at b = 1000) from the quantised replay pack; group g0's tiers
New partition `cos-f50-T20` (2 shaped terms of 373 cells, gates +1/-1, group g0), contracted from the quantised coefficient pack (SubstrateCommons/disco-replay `disco/`) with its band quantisation charged in the partition's certificate term; rounding {"budget": 0.0009484706514687686, "variance": 0.0008699984157841259, "source_quantisation": 5.445019754832508e-05, "eps": 0.0316689256056642}; layout err_max 1.299e-03. Column sha256 b494163e97ceab755a4b0feb0ade9a2381f267a08f56f5ca5c4bef2edb5a55df. Every other file unchanged.
