Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1011,3 +1011,5 @@
 {"step": 20220, "tokens": 10601103360, "loss": 2.720977783203125, "tokens_per_second": 974762.7170033227, "lr": 0.0015, "gradient_norm": 0.20825006067752838, "benchmark": false}
 {"step": 20240, "tokens": 10611589120, "loss": 2.7392934799194335, "tokens_per_second": 986141.0148407788, "lr": 0.0015, "gradient_norm": 0.15124203264713287, "benchmark": false}
 {"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}