Диагностика запуска live-камеры в интерфейсе

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

@@ -203,6 +203,24 @@ test("live camera registers sourceopen before assigning the MSE object URL", asy
   );
 });
 
+test("live camera reports each browser startup boundary without device actions", async () => {
+  const source = await readFile(
+    new URL("../src/components/MseFmp4WebSocketPlayer.tsx", import.meta.url),
+    "utf8",
+  );
+  for (const eventCode of [
+    "live_camera_player_effect_started",
+    "live_camera_playback_authority_missing",
+    "live_camera_media_source_open",
+    "live_camera_websocket_open",
+  ]) {
+    assert.ok(
+      source.includes(`eventCode: "${eventCode}"`),
+      `missing bounded player diagnostic ${eventCode}`,
+    );
+  }
+});
+
 test("recorded observation timeline clamps relative seek time without epoch precision in the UI", () => {
   const range = normalizeTimelineRange({
     min: 0,