chore: stylize sse code; fix: add sseclient-py to requirements

itd/models/event.py

@@ -1,11 +1,8 @@
 from uuid import UUID
-from datetime import datetime
-from typing import Literal
 
 from pydantic import BaseModel, Field
 
-from itd.enums import NotificationType, NotificationTargetType
-from itd.models.user import UserNotification
+from itd.models.notification import Notification
 
 
 class StreamConnect(BaseModel):
@@ -14,20 +11,7 @@ class StreamConnect(BaseModel):
     timestamp: int
 
 
-class StreamNotification(BaseModel):
+class StreamNotification(Notification):
     """Уведомление из SSE потока"""
-    id: UUID
-    type: NotificationType
-    
-    target_type: NotificationTargetType | None = Field(None, alias='targetType')
-    target_id: UUID | None = Field(None, alias='targetId')
-    
-    preview: str | None = None
-    read_at: datetime | None = Field(None, alias='readAt')
-    created_at: datetime = Field(alias='createdAt')
-    
     user_id: UUID = Field(alias='userId')
-    actor: UserNotification
-    
-    read: bool = False
     sound: bool = True