refactor: improve config loader validation with Pydantic schemas

- Replace manual field type validation with Pydantic model schemas
- Add pydantic>=2.0 as core dependency
- Fix sync wrapper in decorator to properly handle rate limiting
- Update pyright settings for stricter type checking
- Fix repository URL in pyproject.toml
- Remove unused main.py
- Update test assertions for new validation error format

fastapi_traffic/core/decorator.py

@@ -51,7 +51,6 @@ def rate_limit(
     /,
 ) -> Callable[[F], F]: ...
 
-
 def rate_limit(
     limit: int,
     window_size: float = 60.0,
@@ -139,9 +138,23 @@ def rate_limit(
         def sync_wrapper(*args: Any, **kwargs: Any) -> Any:
             import asyncio
 
-            return asyncio.get_event_loop().run_until_complete(
-                async_wrapper(*args, **kwargs)
-            )
+            async def _sync_rate_limit() -> Any:
+                request = _extract_request(args, kwargs)
+                if request is None:
+                    return func(*args, **kwargs)
+
+                limiter = get_limiter()
+                result = await limiter.hit(request, config)
+
+                response = func(*args, **kwargs)
+
+                if config.include_headers and hasattr(response, "headers"):
+                    for key, value in result.info.to_headers().items():
+                        response.headers[key] = value
+
+                return response
+
+            return asyncio.get_event_loop().run_until_complete(_sync_rate_limit())
 
         if _is_coroutine_function(func):
             return async_wrapper  # type: ignore[return-value]