White Paper Tab + Overall Score UI

Frontend

New White Paper tab presents ORO's research results, including average success rate (ASR) results from ShoppingBench, the predecessor to ORO Bench.
The leaderboard now surfaces the 3-race pooled Overall score with a per-race sparkline breakdown.
Fixed three display bugs affecting the leaderboard, trajectory viewer, and dashboard race-candidate banner.
Miner docs updated for pooled Overall scoring, the 5-day/top-agent code reveal, and raw-score elimination.

Removed unused emission-decay fields from the public top-agent endpoint; the emission split is governed by the live burn-rate policy.