[lcsa-nax §4 harness] session=S2
[lcsa-nax §4 harness] correctness smoke (Phase 1.1 lesson)...
  smoke: rel_err=5.3654e-04  rmse=0.000001  NaN=0 Inf=0 -> PASS
[lcsa-nax §4 harness] initial cooldown 180.0s
  lcsa_small_seq4k                 d_actual=0.240 class=moderate  NAX=   2.56ms  SDPA=   2.53ms  ratio= 0.99×  drift= 0.4%
  lcsa_small_seq4k_sparse          d_actual=0.070 class=moderate  NAX=   2.61ms  SDPA=   2.59ms  ratio= 0.99×  drift= 2.8%
  lcsa_mid_seq8k                   d_actual=0.120 class=moderate  NAX=   6.46ms  SDPA=   6.53ms  ratio= 1.01×  drift= 1.0%
  lcsa_mid_seq8k_sparse            d_actual=0.030 class=boundary  NAX=   6.53ms  SDPA=   6.60ms  ratio= 1.01×  drift= 0.0%
  lcsa_large_seq16k                d_actual=0.120 class=moderate  NAX=  12.81ms  SDPA=  12.70ms  ratio= 0.99×  drift= 0.9%
  lcsa_large_seq16k_sparse         d_actual=0.030 class=boundary  NAX=  12.84ms  SDPA=  12.79ms  ratio= 1.00×  drift= 0.1%
  lcsa_mid_seq8k_very_sparse       d_actual=0.010 class=niche     NAX=   2.87ms  SDPA=   6.55ms  ratio= 2.28×  drift= 2.0%

[lcsa-nax §4 harness] session 'S2' → docs/lcsa-nax/lcsa-nax-rebench-data.json
