RCVolus/league-prod-toolkit ? reverse-engineered prompt

Build me a production toolkit for esports broadcasts, mainly for League of Legends, that runs on a server and powers live overlays for OBS or vMix through a browser source.

I want it to handle pregame, ingame, and postgame screens, with things like caster lower thirds, match and score tracking, team themed graphics, champ select overlays, champion select replay, rune views, custom scoreboard, gold and level leaderboards, killfeed, objective timers, item and level up animations, and postgame stats like builds, damage, and gold graphs.

It should also support Twitch integration for predictions and stream state, and pull in game data from an observer tool and Riot API when needed. If you need to check current docs or best practices for any APIs, do that. Keep the whole thing clean, configurable, and easy to customize for different broadcasts.