Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -38,3 +38,5 @@
 {"step": 760, "tokens": 398458880, "loss": 3.6883705139160154, "tokens_per_second": 984211.8141510511, "lr": 0.00057, "gradient_norm": 0.5399366617202759, "benchmark": false}
 {"step": 780, "tokens": 408944640, "loss": 3.716542434692383, "tokens_per_second": 982512.276017266, "lr": 0.000585, "gradient_norm": 0.46255218982696533, "benchmark": false}
 {"step": 800, "tokens": 419430400, "loss": 3.6764266967773436, "tokens_per_second": 987572.7835053173, "lr": 0.0006000000000000001, "gradient_norm": 0.47228479385375977, "benchmark": false}
+{"step": 820, "tokens": 429916160, "loss": 3.6527549743652346, "tokens_per_second": 836695.3994385907, "lr": 0.000615, "gradient_norm": 0.4634140431880951, "benchmark": false}
+{"step": 840, "tokens": 440401920, "loss": 3.6467517852783202, "tokens_per_second": 990496.904193152, "lr": 0.00063, "gradient_norm": 0.4072583019733429, "benchmark": false}