Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1013,3 +1013,5 @@
 {"step": 20260, "tokens": 10622074880, "loss": 2.7258880615234373, "tokens_per_second": 831364.0932077336, "lr": 0.0015, "gradient_norm": 0.2038249969482422, "benchmark": false}
 {"step": 20280, "tokens": 10632560640, "loss": 2.7766510009765626, "tokens_per_second": 981821.9761783535, "lr": 0.0015, "gradient_norm": 0.13956715166568756, "benchmark": false}
 {"step": 20300, "tokens": 10643046400, "loss": 2.7324808120727537, "tokens_per_second": 979214.5308953221, "lr": 0.0015, "gradient_norm": 0.1723640114068985, "benchmark": false}
+{"step": 20320, "tokens": 10653532160, "loss": 2.7113363265991213, "tokens_per_second": 970684.5656375552, "lr": 0.0015, "gradient_norm": 0.13509832322597504, "benchmark": false}
+{"step": 20340, "tokens": 10664017920, "loss": 2.761567497253418, "tokens_per_second": 982388.4414941983, "lr": 0.0015, "gradient_norm": 0.13982176780700684, "benchmark": false}