diff --git a/app/cabinet/routes/oauth.py b/app/cabinet/routes/oauth.py
index e1ff3472..90863801 100644
--- a/app/cabinet/routes/oauth.py
+++ b/app/cabinet/routes/oauth.py
@@ -71,7 +71,9 @@ class OAuthAuthorizeResponse(BaseModel):
 class OAuthCallbackRequest(BaseModel):
     code: str = Field(..., description='Authorization code from provider')
     state: str = Field(..., description='CSRF state token')
-    campaign_slug: str | None = Field(None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link')
+    campaign_slug: str | None = Field(
+        None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link'
+    )
 
 
 # --- Endpoints ---
diff --git a/app/cabinet/schemas/auth.py b/app/cabinet/schemas/auth.py
index b2aa6bd0..58f31340 100644
--- a/app/cabinet/schemas/auth.py
+++ b/app/cabinet/schemas/auth.py
@@ -9,7 +9,9 @@ class TelegramAuthRequest(BaseModel):
     """Request for Telegram WebApp initData authentication."""
 
     init_data: str = Field(..., description='Telegram WebApp initData string')
-    campaign_slug: str | None = Field(None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link')
+    campaign_slug: str | None = Field(
+        None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link'
+    )
 
 
 class TelegramWidgetAuthRequest(BaseModel):
@@ -22,7 +24,9 @@ class TelegramWidgetAuthRequest(BaseModel):
     photo_url: str | None = Field(None, description="User's photo URL")
     auth_date: int = Field(..., description='Unix timestamp of authentication')
     hash: str = Field(..., description='Authentication hash')
-    campaign_slug: str | None = Field(None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link')
+    campaign_slug: str | None = Field(
+        None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link'
+    )
 
 
 class EmailRegisterRequest(BaseModel):
@@ -36,7 +40,9 @@ class EmailVerifyRequest(BaseModel):
     """Request to verify email with token."""
 
     token: str = Field(..., description='Email verification token')
-    campaign_slug: str | None = Field(None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link')
+    campaign_slug: str | None = Field(
+        None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link'
+    )
 
 
 class EmailLoginRequest(BaseModel):
@@ -44,7 +50,9 @@ class EmailLoginRequest(BaseModel):
 
     email: EmailStr = Field(..., description='Email address')
     password: str = Field(..., description='Password')
-    campaign_slug: str | None = Field(None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link')
+    campaign_slug: str | None = Field(
+        None, min_length=1, max_length=64, pattern=r'^[a-zA-Z0-9_-]+$', description='Campaign slug from web link'
+    )
 
 
 class RefreshTokenRequest(BaseModel):
diff --git a/app/services/admin_notification_service.py b/app/services/admin_notification_service.py
index 5d73fec4..7b13d5f1 100644
--- a/app/services/admin_notification_service.py
+++ b/app/services/admin_notification_service.py
@@ -1215,9 +1215,7 @@ class AdminNotificationService:
         """Public check for whether admin notifications are configured and active."""
         return self._is_enabled()
 
-    async def send_admin_notification(
-        self, text: str, reply_markup: types.InlineKeyboardMarkup | None = None
-    ) -> bool:
+    async def send_admin_notification(self, text: str, reply_markup: types.InlineKeyboardMarkup | None = None) -> bool:
         """Send a generic notification to admin chat with optional inline keyboard."""
         if not self._is_enabled():
             return False