B300 GPU deployed, multi-challenger rounds active

SN97 migrated from H100 to NVIDIA B300 (275 GB VRAM) to handle multi-model evaluation. Deployed v32.6 with 10 challengers per round and king re-evaluation enabled. Fixed OpenRouter API throttling via multi-pass retry; token caps tightened on slow benches. New king (UID 244, `Foremost04/will_king_v2`) scores 0.561 composite, raising dethrone threshold to ~0.589. Stale-round timeout bug fixed; eval rounds now safely target 5–6 hours under 8-hour ceiling.

• •B300 SXM6 (275 GB VRAM) replaced unavailable B200; vLLM installed for batched generation.
• •v32.6: 10 challengers + king per round (was 1); multi-pass retry recovers OpenRouter 429 storms.
• •Token caps trimmed: logic_grid 1.5K→1K, math benches 3K→2K. Per-student scoring ~30 min.
• •UID 244 dethroned UID 177; new king final=0.561 on α=0.75 formula (0.75×worst_3_mean + 0.25×weighted).
• •Stale-round guard fixed; 180-min hardcode replaced with dynamic limit (eval timeout + 30 min buffer).