Stabilize per-page table binding and prevent tab-switch data thrash

fix: scope challenge db to live-challenge only and keep join arena on trading decisions

feat: route challenge pages to challenge_table data source

feat: add challenge leaderboard with model-specific filtering

feat: add live challenge tab and whitelist live agents

Change settings

Change settings

Change settings

feat: update Agent Arena with email and voting system

add: Feature

Duplicate from static-templates/vue