Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -120,3 +120,5 @@
 {"step": 2400, "tokens": 1258291200, "loss": 3.146928596496582, "tokens_per_second": 978642.099530088, "lr": 0.0015, "gradient_norm": 0.28170835971832275, "benchmark": false}
 {"step": 2420, "tokens": 1268776960, "loss": 3.181461524963379, "tokens_per_second": 975283.9687830707, "lr": 0.0015, "gradient_norm": 0.283269464969635, "benchmark": false}
 {"step": 2440, "tokens": 1279262720, "loss": 3.1301828384399415, "tokens_per_second": 971320.7176772086, "lr": 0.0015, "gradient_norm": 0.3059178292751312, "benchmark": false}
+{"step": 2460, "tokens": 1289748480, "loss": 3.1355751037597654, "tokens_per_second": 971357.1525588263, "lr": 0.0015, "gradient_norm": 0.2556086480617523, "benchmark": false}
+{"step": 2480, "tokens": 1300234240, "loss": 3.116751861572266, "tokens_per_second": 983559.1611577123, "lr": 0.0015, "gradient_norm": 0.22678160667419434, "benchmark": false}