Share the K1 live scene template and preserve idle media channels

apps/control-station/test/recordedCameraBuffering.test.mjs

@@ -280,7 +280,7 @@ test("recorded player skips only a proven buffered corrupt timestamp interval",
 
 test("loading and error overlays fully conceal recorded camera pixels", async () => {
   const css = await readFile(
-    new URL("../src/styles/observation.css", import.meta.url),
+    new URL("../../../packages/spatial-ui/src/observation.css", import.meta.url),
     "utf8",
   );
   assert.match(