Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -221,3 +221,5 @@
 {"step": 4420, "tokens": 2317352960, "loss": 2.975873565673828, "tokens_per_second": 982659.5596324302, "lr": 0.0015, "gradient_norm": 0.10142190754413605, "benchmark": false}
 {"step": 4440, "tokens": 2327838720, "loss": 2.9742687225341795, "tokens_per_second": 810300.7172113446, "lr": 0.0015, "gradient_norm": 0.11457952857017517, "benchmark": false}
 {"step": 4460, "tokens": 2338324480, "loss": 2.952668571472168, "tokens_per_second": 977774.70016757, "lr": 0.0015, "gradient_norm": 0.10796493291854858, "benchmark": false}
+{"step": 4480, "tokens": 2348810240, "loss": 2.937723922729492, "tokens_per_second": 975644.4070345019, "lr": 0.0015, "gradient_norm": 0.10837341099977493, "benchmark": false}
+{"step": 4500, "tokens": 2359296000, "loss": 2.9822259902954102, "tokens_per_second": 972916.4437882437, "lr": 0.0015, "gradient_norm": 0.10424689948558807, "benchmark": false}