fix(api): update

services/api/app/ws/broadcaster.py

@@ -3,24 +3,26 @@ from __future__ import annotations
 import asyncio
 from contextlib import suppress
 from datetime import timezone
-from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.db.session import SessionLocal
 from app.repositories.audio_repository import AudioRepository
-from app.ws.manager import manager
+from app.ws.router import manager  # используем тот же manager, что и в ws/router.py
 
 
 def _iso_z(dt) -> str:
-    # dt ожидается timezone-aware
     return dt.astimezone(timezone.utc).isoformat().replace("+00:00", "Z")
 
 
-async def audio_live_broadcaster(poll_interval_sec: float = 0.2) -> None:
+async def audio_live_broadcaster(poll_interval_sec: float = 0.05) -> None:
+    """
+    Poll latest row and broadcast only when a NEW row appears.
+    Throttling per client is handled by manager.broadcast_json().
+    """
     last_time = None
 
     while True:
         try:
-            async with SessionLocal() as db:  # AsyncSession
+            async with SessionLocal() as db:
                 repo = AudioRepository(db)
                 rows = await repo.latest(1)
                 if rows:
@@ -35,7 +37,7 @@ async def audio_live_broadcaster(poll_interval_sec: float = 0.2) -> None:
                             }
                         )
         except Exception:
-            # чтобы WS не умирал из-за временных проблем с БД
+            # не даём таске умереть при временных проблемах БД
             pass
 
         await asyncio.sleep(poll_interval_sec)