Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -790,3 +790,5 @@
 {"step": 15800, "tokens": 8283750400, "loss": 2.7696556091308593, "tokens_per_second": 985700.6837745443, "lr": 0.0015, "gradient_norm": 0.12022973597049713, "benchmark": false}
 {"step": 15820, "tokens": 8294236160, "loss": 2.793374443054199, "tokens_per_second": 983604.8663832461, "lr": 0.0015, "gradient_norm": 0.13915833830833435, "benchmark": false}
 {"step": 15840, "tokens": 8304721920, "loss": 2.793455696105957, "tokens_per_second": 985509.9259761899, "lr": 0.0015, "gradient_norm": 0.13698719441890717, "benchmark": false}
+{"step": 15860, "tokens": 8315207680, "loss": 2.7685171127319337, "tokens_per_second": 984942.6903972635, "lr": 0.0015, "gradient_norm": 0.12572473287582397, "benchmark": false}
+{"step": 15880, "tokens": 8325693440, "loss": 2.799310874938965, "tokens_per_second": 981443.0795205814, "lr": 0.0015, "gradient_norm": 0.1338423192501068, "benchmark": false}