Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -242,3 +242,5 @@
 {"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}
+{"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}