Split provider documentation into one page per provider Provider-Variable-Mapping.md was a single large page covering both TWITCH and STREAM_LINK. Split each provider's "Events Supported by StreamLink" and "The Variable Map" content into its own page (Provider-Twitch.md, Provider-Stream-Link.md), and turned Provider-Variable-Mapping.md into a short overview/index page that explains the ProviderVariable concept and links to each provider's page. Updated cross-references on Home, Getting Started, and Variables to point at the specific provider pages instead of anchors on the old combined page. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CQiha6j7y6vxYeoTuW7Cka