Remove experiment process records

Update README: full wave18 lineage + experiment_records

upload train_summaries_20260512.tar.gz

upload experiment_archive_20260512.tar.gz

upload Y_3500

upload X_3400-summary

upload X_3400

upload S_2800-summary

upload S_2800

upload R2_2100

upload A_best-summary

upload A_best

upload BS_4000

upload BT_5680-summary

upload BT_5680

Delete _test_downgrade.txt with huggingface_hub

Upload _test_downgrade.txt with huggingface_hub

Delete _upload_test.txt with huggingface_hub

Upload _upload_test.txt with huggingface_hub

update README with new best wave18BU_7280 PPL 97.56 + standard WT2 metric

add wave18BU_7280 (standard WikiText-2 PPL = 97.56, new best)

AN 5600 best wiki PPL 114.20 (beats AC 3900 by 5 points)

AN 5600 meta (best wiki 114.20)

add Wave18AN update_5600 entry

AC update_3900 best wiki PPL 119.68

add wave18AC_update3900_best_wiki119p7/meta

add README

initial commit