fix: resolve CI linting issues

src/core/__init__.py

@@ -1,13 +1,19 @@
-"""Core module for OpenAPI parsing and validation."""
+from src.core.models import (
-
+    Components,
-from src.core.models import OpenAPISpec, Endpoint, Schema, Parameter, Response
+    Contact,
-from src.core.parser import OpenAPIParser
+    HttpMethod,
-
+    Info,
-__all__ = [
+    License,
-    "OpenAPISpec",
+    OpenAPISpec,
-    "Endpoint",
+    Operation,
-    "Schema",
+    Parameter,
-    "Parameter",
+    ParameterIn,
-    "Response",
+    PathItem,
-    "OpenAPIParser",
+    RequestBody,
-]
+    Response,
+    Schema,
+    SecurityScheme,
+    Server,
+    Tag,
+)
+from src.core.parser import OpenAPIParser, parse_openapi_spec