admin notifications and data explorer backend

app/api/deps.py

@@ -8,6 +8,7 @@ from app.core.config import settings
 from app.db.session import get_session
 from app.models.car import AuditLog, Car, ServiceCenter, ServiceEmployee, VehicleAccess
 from app.models.user import User
+from app.services.admin_notifications import create_admin_notification
 from app.services.telegram_auth import verify_webapp_init_data
 
 
@@ -36,6 +37,24 @@ async def get_or_create_telegram_user(
     if user is None:
         user = User(**{key: value for key, value in payload.items() if value is not None})
         session.add(user)
+        await session.flush()
+        await create_admin_notification(
+            session,
+            event_type="user_registered",
+            title="Новый пользователь",
+            body="\n".join(
+                item
+                for item in [
+                    f"Имя: {' '.join(part for part in [first_name, last_name] if part) or '-'}",
+                    f"Telegram ID: {telegram_id}",
+                    f"Username: @{username}" if username else "Username: -",
+                ]
+            ),
+            entity_type="user",
+            entity_id=user.id,
+            idempotency_key=f"user_registered:{telegram_id}",
+            metadata={"telegram_id": telegram_id, "username": username},
+        )
     else:
         for field, value in payload.items():
             if value is not None: