Initial commit: AutonetSellCar platform with deployment system

- Frontend: Next.js 14 with TypeScript
- Backend: FastAPI with SQLAlchemy
- Agent: Carmodoo sync agent
- Deployment: Docker Compose based staging/production setup
- Scripts: Automated deployment with rollback support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/app/schemas/notification.py

@@ -0,0 +1,44 @@
+from pydantic import BaseModel
+from typing import Optional, List
+from datetime import datetime
+
+
+class NotificationCreate(BaseModel):
+    """Create notification schema"""
+    user_id: int
+    notification_type: str
+    title: str
+    message: str
+    link: Optional[str] = None
+    related_id: Optional[int] = None
+    related_type: Optional[str] = None
+
+
+class NotificationResponse(BaseModel):
+    """Notification response schema"""
+    id: int
+    user_id: int
+    notification_type: str
+    title: str
+    message: str
+    link: Optional[str] = None
+    related_id: Optional[int] = None
+    related_type: Optional[str] = None
+    is_read: bool
+    read_at: Optional[datetime] = None
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class NotificationListResponse(BaseModel):
+    """Notification list with unread count"""
+    notifications: List[NotificationResponse]
+    unread_count: int
+    total: int
+
+
+class NotificationMarkRead(BaseModel):
+    """Mark notifications as read"""
+    notification_ids: List[int]