Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -641,3 +641,5 @@
 {"step": 12820, "tokens": 6721372160, "loss": 2.785415840148926, "tokens_per_second": 985157.5290273348, "lr": 0.0015, "gradient_norm": 0.10264149308204651, "benchmark": false}
 {"step": 12840, "tokens": 6731857920, "loss": 2.805078887939453, "tokens_per_second": 979360.6612045242, "lr": 0.0015, "gradient_norm": 0.10192272067070007, "benchmark": false}
 {"step": 12860, "tokens": 6742343680, "loss": 2.825607681274414, "tokens_per_second": 977634.0059499261, "lr": 0.0015, "gradient_norm": 0.10521155595779419, "benchmark": false}
+{"step": 12880, "tokens": 6752829440, "loss": 2.8118125915527346, "tokens_per_second": 979885.4051890227, "lr": 0.0015, "gradient_norm": 0.11813370883464813, "benchmark": false}
+{"step": 12900, "tokens": 6763315200, "loss": 2.8082229614257814, "tokens_per_second": 990730.8176655684, "lr": 0.0015, "gradient_norm": 0.11093993484973907, "benchmark": false}