cleanup: remove size-80k/stage3/checkpoint-1200

cleanup: remove size-80k/stage3/checkpoint-1100

cleanup: remove size-80k/stage3/checkpoint-1000

cleanup: remove size-80k/stage3/checkpoint-900

cleanup: remove size-80k/stage3/checkpoint-800

cleanup: remove size-80k/stage3/checkpoint-500

cleanup: remove size-80k/stage3/checkpoint-400

cleanup: remove size-80k/stage3/checkpoint-300

cleanup: remove size-80k/stage3/checkpoint-200

cleanup: remove size-80k/stage3/checkpoint-100

stage3 checkpoint-1250 (weights-only)

stage3 checkpoint-1200 (weights-only)

stage3 checkpoint-1100 (weights-only)

stage3 checkpoint-1000 (weights-only)

stage3 checkpoint-900 (weights-only)

stage3 checkpoint-800 (weights-only)

stage3 checkpoint-700 (weights-only)

stage3 checkpoint-600 (weights-only)

stage3 checkpoint-500 (weights-only)

stage3 checkpoint-400 (weights-only)

stage3 checkpoint-300 (weights-only)

stage3 checkpoint-200 (weights-only)

cleanup: drop flat full ckpt-1250 (best stage2 weights now in size-80k/stage2/)

stage3 checkpoint-100 (weights-only)

organize: best stage2 model (clean weights) -> size-80k/stage2/

cleanup stage2: drop intermediate checkpoint-1200 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-1100 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-1000 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-900 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-800 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-700 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-600 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-500 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-400 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-300 (keep best 1250)

cleanup stage2: drop intermediate checkpoint-200 (keep best 1250)

size-80k/checkpoint-1250

size-80k/checkpoint-1200

size-80k/checkpoint-1100

size-80k/checkpoint-1000

size-80k/checkpoint-900

size-80k/checkpoint-800

size-80k/checkpoint-700

size-80k/checkpoint-600

size-80k/checkpoint-500

size-80k/checkpoint-400

size-80k/checkpoint-300

size-80k/checkpoint-200

remove NaN-diverged checkpoint-100

remove NaN-diverged checkpoint-50