leaderboard: add avg_cost_per_task_usd column for V2 hermes rows

leaderboard/results.csv

@@ -1,15 +1,15 @@
-model,harness,dataset,passed,total,pass_rate,reward_rate,wall_hours,reward_rate_strict
-claude-opus-4-7,hermes,v2,58,130,54.6,44.6,,24.6
-gpt-5.5,hermes,v2,46,130,45.4,35.4,,18.5
-glm-5.1,hermes,v2,45,130,48.5,34.6,,17.7
-deepseek-v4-pro,hermes,v2,44,130,43.9,33.9,,12.3
-openrouter-owl-alpha,hermes,v2,0,130,14.6,0.0,,0.0
-z-ai/glm-4.5-air:free,hermes,v2,3,130,4.6,2.3,,0.8
-deepseek-v4-flash:free,hermes,v2,3,129,3.1,2.3,,0.0
-minimax-m2.5:free,hermes,v2,2,130,2.3,1.5,,0.0
-claude-opus-4-6,hermes,v1,94,153,61.4,61.4,,
-claude-sonnet-4-6,hermes,v1,87,153,56.9,56.9,,
-claude-haiku-4-5-20251001,hermes,v1,46,153,30.1,30.1,,
-gpt-5.4-2026-03-05,hermes,v1,39,153,25.5,25.5,,
-gpt-5.4-mini-2026-03-17,hermes,v1,38,153,24.8,24.8,,
-kimi-k2.5,hermes,v1,27,153,17.6,17.6,,
+model,harness,dataset,passed,total,pass_rate,reward_rate,wall_hours,reward_rate_strict,avg_cost_per_task_usd
+claude-opus-4-7,hermes,v2,58,130,54.6,44.6,,24.6,4.4425
+gpt-5.5,hermes,v2,46,130,45.4,35.4,,18.5,0.3325
+glm-5.1,hermes,v2,45,130,48.5,34.6,,17.7,0.1935
+deepseek-v4-pro,hermes,v2,44,130,43.9,33.9,,12.3,0.0721
+openrouter-owl-alpha,hermes,v2,0,130,14.6,0.0,,0.0,0.3704
+z-ai/glm-4.5-air:free,hermes,v2,3,130,4.6,2.3,,0.8,0.0
+deepseek-v4-flash:free,hermes,v2,3,129,3.1,2.3,,0.0,0.0
+minimax-m2.5:free,hermes,v2,2,130,2.3,1.5,,0.0,0.0
+claude-opus-4-6,hermes,v1,94,153,61.4,61.4,,,
+claude-sonnet-4-6,hermes,v1,87,153,56.9,56.9,,,
+claude-haiku-4-5-20251001,hermes,v1,46,153,30.1,30.1,,,
+gpt-5.4-2026-03-05,hermes,v1,39,153,25.5,25.5,,,
+gpt-5.4-mini-2026-03-17,hermes,v1,38,153,24.8,24.8,,,
+kimi-k2.5,hermes,v1,27,153,17.6,17.6,,,