Mirror the rewritten documentation into the wiki
Every page now matches the docs in the releases repo at 0.6.347, with
the same 41 screenshots (tokens and URLs masked). New pages: Reactive
Overlays and Thons. Stream Tools is split across Stats, Polls,
Predictions, and Thons, Channel Points, Moderation, OBS Control, Video
Manager, and Closed Captions. Event Sources, Goals and Charity, LuckyBot
Cloud, and Spotify are refreshed for the current connections and
features. Home follows the README, and a sidebar lists every page.
Bring wiki up to date with the current app: rewrite Settings (new connections, TTS providers, System tab detail), add Stats and Captions pages, fix Chat/Channel Points/Polls and Predictions/OBS Control/Video Manager/Overlays/Advanced Editor/Widgets/Goals and Charity/Moderation gaps
Add feature pages: Moderation, Channel Points, Polls and Predictions, Video Manager, OBS Control, Widgets, Goals and Charity, Spotify, LuckyBot Cloud
New pages for every remaining sidebar feature, all framed as working
through the Twitch login with Streamer.bot optional. Home now links the
full set, grouped to match the app.