Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -244,3 +244,4 @@
 {"step": 4880, "tokens": 2558525440, "loss": 2.932330322265625, "tokens_per_second": 969385.8209018379, "lr": 0.0015, "gradient_norm": 0.0836762934923172, "benchmark": false}
 {"step": 4900, "tokens": 2569011200, "loss": 2.9397216796875, "tokens_per_second": 945803.8707235291, "lr": 0.0015, "gradient_norm": 0.08557648211717606, "benchmark": false}
 {"step": 4920, "tokens": 2579496960, "loss": 2.9269309997558595, "tokens_per_second": 965631.9754211057, "lr": 0.0015, "gradient_norm": 0.0888092964887619, "benchmark": false}
+{"step": 4940, "tokens": 2589982720, "loss": 2.9586591720581055, "tokens_per_second": 964416.464912028, "lr": 0.0015, "gradient_norm": 0.09584059566259384, "benchmark": false}