feat: AppState gains speaker pause fields and AWAITING_SPEAKERS status

api/state.py

@@ -8,15 +8,20 @@ class Status(str, Enum):
     IDLE = "idle"
     RECORDING = "recording"
     PROCESSING = "processing"
+    AWAITING_SPEAKERS = "awaiting_speakers"
     ERROR = "error"
 
 
 @dataclass
 class AppState:
     status: Status = Status.IDLE
-    recording_user: str | None = None  # which user triggered the current recording
+    recording_user: str | None = None
     last_error: str | None = None
     _listeners: list[Callable] = field(default_factory=list, repr=False)
+    # Diarization pipeline pause
+    _speakers_event: asyncio.Event | None = None
+    _pending_aligned_segments: list[tuple[str, str]] | None = None
+    _speaker_names: dict[str, str] | None = None
 
     def subscribe(self, callback: Callable):
         self._listeners.append(callback)