fix: resolve CI linting violations

- Fixed import sorting in cli.py, __main__.py, detectors/__init__.py, base.py, python.py, rust.py, openapi.py, models/__init__.py
- Removed unused imports (sys, asyncio, Observer, Text, Parameter, ParameterIn, HTTPMethod, DocConfig, List, Optional)
- Removed trailing whitespace from blank lines
- Split lines exceeding 100 characters
- Added missing __init__ docstrings in generators and static/templates packages

src/docgen/generators/openapi.py

@@ -1,10 +1,11 @@
-"""OpenAPI documentation generator."""
+{"""OpenAPI documentation generator."""
 
 import json
 from pathlib import Path
 from typing import Any
-from docgen.models import DocConfig, Endpoint, HTTPMethod
+
 from docgen.generators import BaseGenerator
+from docgen.models import Endpoint
 
 
 class OpenAPIGenerator(BaseGenerator):
@@ -53,7 +54,9 @@ class OpenAPIGenerator(BaseGenerator):
         operation = {
             "summary": endpoint.summary or f"{endpoint.method.value} {endpoint.path}",
             "description": endpoint.description,
-            "operationId": endpoint.operation_id or f"{method}_{endpoint.path.replace('/', '_').strip('_')}",
+            "operationId": endpoint.operation_id or self._make_operation_id(
+                method, endpoint.path
+            ),
             "deprecated": endpoint.deprecated,
             "parameters": [self._param_to_openapi(p) for p in endpoint.parameters],
             "responses": self._build_responses(endpoint.responses),
@@ -64,6 +67,10 @@ class OpenAPIGenerator(BaseGenerator):
 
         return {method: operation}
 
+    def _make_operation_id(self, method: str, path: str) -> str:
+        """Generate a unique operation ID from method and path."""
+        return f"{method}_{path.replace('/', '_').strip('_')}"
+
     def _param_to_openapi(self, param) -> dict[str, Any]:
         """Convert Parameter to OpenAPI parameter."""
         return {