Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1019,3 +1019,5 @@
 {"step": 20380, "tokens": 10684989440, "loss": 2.7244327545166014, "tokens_per_second": 982084.2929775625, "lr": 0.0015, "gradient_norm": 0.14956440031528473, "benchmark": false}
 {"step": 20400, "tokens": 10695475200, "loss": 2.76476993560791, "tokens_per_second": 971121.3641976244, "lr": 0.0015, "gradient_norm": 0.1706211119890213, "benchmark": false}
 {"step": 20420, "tokens": 10705960960, "loss": 2.753704071044922, "tokens_per_second": 980687.0851026584, "lr": 0.0015, "gradient_norm": 0.1481383889913559, "benchmark": false}
+{"step": 20440, "tokens": 10716446720, "loss": 2.753870964050293, "tokens_per_second": 978169.9813464287, "lr": 0.0015, "gradient_norm": 0.15416103601455688, "benchmark": false}
+{"step": 20460, "tokens": 10726932480, "loss": 2.7352483749389647, "tokens_per_second": 978425.8752704178, "lr": 0.0015, "gradient_norm": 0.15846577286720276, "benchmark": false}