feat(room): extract hang.live conferencing into @moq/room and moq-room

Cargo.toml

@@ -20,6 +20,7 @@ members = [
     "rs/moq-net/fuzz",
     "rs/moq-nvenc",
     "rs/moq-relay",
+    "rs/moq-room",
     "rs/moq-rtc",
     "rs/moq-rtmp",
     "rs/moq-srt",
@@ -51,6 +52,7 @@ default-members = [
     "rs/moq-native",
     "rs/moq-nvenc",
     "rs/moq-relay",
+    "rs/moq-room",
     "rs/moq-rtc",
     "rs/moq-rtmp",
     "rs/moq-srt",

demo/web/README.md

@@ -19,6 +19,7 @@ Run `just web` (or `bun --bun vite` from this directory) and open the pages:
 
 - `watch.html` - Watch inspector: one tile per live broadcast discovered under a prefix, click to make a tile active (audio + a live stats panel for video/audio/network and a custom `meta.json` metadata track).
 - `publish.html` - Publish from a camera/screen/file, plus an editor for the custom `meta.json` metadata track.
+- `meet.html` - Conferencing: a room is a path prefix, participants publish `{identity}/camera` and `{identity}/screen`, discovered from the announce stream. Open the same room in two tabs.
 - `stats.html` - Relay stats dashboard: auto-discovers every node publishing `.stats` and aggregates external vs. cluster traffic. Needs `[stats] enabled = true` on the relay (the demo configs already set it).
 
 # License

demo/web/package.json

@@ -15,6 +15,7 @@
 		"@moq/hang": "workspace:^",
 		"@moq/json": "workspace:^",
 		"@moq/publish": "workspace:^",
+		"@moq/room": "workspace:^",
 		"@moq/watch": "workspace:^"
 	},
 	"//devDependencies": "These are only needed for local development with workspace packages. They are NOT needed when using the published npm packages.",