P0 UID-rotation eval bug fixed; chat template bias identified

Distil shipped a critical fix for hotkey rotation blocking new evaluations. The strict one-eval-per-registration policy was incorrectly inheriting stale composite scores from previous UID holders, locking new hotkeys out of challenger selection. Fix deployed with regression tests and three poisoned ledger entries surgically removed. Separately, team identified a P1 scoring bias: eval pipeline applies raw text to models instead of chat templates, penalizing chat-optimized models and creating divergence from real-world performance. Chat template wrapper planned before next composite schema update.

• •Hotkey rotation re-enabled: evict_stale_evaluated_uids now detects UID-hotkey mismatches and clears stale composites
• •UID 159 and two others unblocked; prior hotkey ledger entries retained as historical records
• •980/981 regression tests pass; one pre-existing failure unrelated to fix
• •Chat template bias fix planned: apply tokenizer.apply_chat_template() to v31 axes and probes before generation