Add notification settings

backend/app/schemas/user.py

@@ -47,6 +47,10 @@ class UserPrivate(UserPublic):
     telegram_username: str | None = None
     telegram_first_name: str | None = None
     telegram_last_name: str | None = None
+    # Notification settings
+    notify_events: bool = True
+    notify_disputes: bool = True
+    notify_moderation: bool = True
 
 
 class TokenResponse(BaseModel):
@@ -83,3 +87,20 @@ class UserProfilePublic(BaseModel):
 
     class Config:
         from_attributes = True
+
+
+class NotificationSettings(BaseModel):
+    """Notification settings for Telegram bot"""
+    notify_events: bool = True
+    notify_disputes: bool = True
+    notify_moderation: bool = True
+
+    class Config:
+        from_attributes = True
+
+
+class NotificationSettingsUpdate(BaseModel):
+    """Update notification settings"""
+    notify_events: bool | None = None
+    notify_disputes: bool | None = None
+    notify_moderation: bool | None = None