Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -172,3 +172,4 @@
 {"step": 3440, "tokens": 1803550720, "loss": 3.040130043029785, "tokens_per_second": 941263.0945912544, "lr": 0.0015, "gradient_norm": 0.17657268047332764, "benchmark": false}
 {"step": 3460, "tokens": 1814036480, "loss": 3.0570775985717775, "tokens_per_second": 969805.7895285914, "lr": 0.0015, "gradient_norm": 0.15748904645442963, "benchmark": false}
 {"step": 3480, "tokens": 1824522240, "loss": 3.0283912658691405, "tokens_per_second": 969750.7373291658, "lr": 0.0015, "gradient_norm": 0.17056794464588165, "benchmark": false}
+{"step": 3500, "tokens": 1835008000, "loss": 3.034389114379883, "tokens_per_second": 971371.564367871, "lr": 0.0015, "gradient_norm": 0.13611756265163422, "benchmark": false}