Blame for run_manifest.json

{
 "arm": "olmo-pretrained",
 "exported_checkpoint": "checkpoint-300",
 "export_rule": "Olmo common step 300 (2026-10-16): no step had every arm passing GATE_OLMO; 300 was the most even (TAC 32-39/52 completed for all arms)",
 "recipe": "legacy part one, RoPE-guarded"
}