Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -240,3 +240,5 @@
 {"step": 4800, "tokens": 2516582400, "loss": 2.9481992721557617, "tokens_per_second": 971270.9862248712, "lr": 0.0015, "gradient_norm": 0.11723429709672928, "benchmark": false}
 {"step": 4820, "tokens": 2527068160, "loss": 2.9477846145629885, "tokens_per_second": 966117.5754807027, "lr": 0.0015, "gradient_norm": 0.08931349217891693, "benchmark": false}
 {"step": 4840, "tokens": 2537553920, "loss": 2.9338357925415037, "tokens_per_second": 972008.3428573115, "lr": 0.0015, "gradient_norm": 0.08552338927984238, "benchmark": false}
+{"step": 4860, "tokens": 2548039680, "loss": 2.9816299438476563, "tokens_per_second": 970438.620095988, "lr": 0.0015, "gradient_norm": 0.0985548347234726, "benchmark": false}
+{"step": 4880, "tokens": 2558525440, "loss": 2.932330322265625, "tokens_per_second": 969385.8209018379, "lr": 0.0015, "gradient_norm": 0.0836762934923172, "benchmark": false}