1. Rounds tab now shows White | Result | Black columns with proper
   result badges (1-0, 0-1, ½-½) instead of raw enum strings.
2. BotSimulationService stores whiteName/blackName in results JSONB.
3. Fixed live-tournaments admin-controller and LiveDataService
   json_decode crashes on already-decoded JSONB arrays.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>