update environment configuration, enhance setup guide, and align documentation with new domain structure

README.md

@@ -1,6 +1,6 @@
 # Linear Void
 
-A self-managed **24/7 linear video channel** for a primarily US audience. It runs a continuous playlist of self-owned videos with true/near-true synchronization, a custom lightweight viewer SPA (hls.js player + chat), and full independence from third-party platforms (YouTube, Twitch, etc.).
+[Linear Void](https://linearvoid.tv) is a self-managed **24/7 linear video channel** for a primarily US audience. It runs a continuous playlist of self-owned videos with true/near-true synchronization, a custom lightweight viewer SPA (hls.js player + chat), and full independence from third-party platforms (YouTube, Twitch, etc.).
 
 **Repository**: [git.allucanget.biz/zwitschi/linearvoid](https://git.allucanget.biz/zwitschi/linearvoid)
 
@@ -107,6 +107,7 @@ See the [architecture docs](docs/architecture/README.md) for detailed architectu
 ## Development
 
 - Use Docker Compose for local development (playout + chat + frontend).
+- Public production host model: `https://linearvoid.tv` for viewer/admin/chat and `https://media.linearvoid.tv` for HLS delivery.
 - Normalize all source videos before adding to playlist (see ADR-001 for exact codec/fps/keyframe requirements).
 - Monitor cache hit ratio and R2 operations closely — they determine real cost.