Main exception renamed to WizamartException

docs/development/exception-handling.md

@@ -9,7 +9,7 @@ The LetzShop API uses a unified custom exception system to provide consistent, m
 ### Exception Hierarchy
 
 ```
-LetzShopException (Base)
+WizamartException (Base)
 ├── ValidationException (422)
 ├── AuthenticationException (401)
 ├── AuthorizationException (403)
@@ -91,7 +91,7 @@ The system handles four categories of exceptions:
 ```python
 # app/exceptions/handler.py
 
-@app.exception_handler(LetzShopException)
+@app.exception_handler(WizamartException)
 async def custom_exception_handler(request, exc):
     """Handle all custom business exceptions"""
     return JSONResponse(