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):
@@ -35,7 +36,7 @@ class OpenAPIGenerator(BaseGenerator):
 
         for endpoint in endpoints:
             path_item = self._endpoint_to_path_item(endpoint)
-            
+
             if endpoint.path not in spec["paths"]:
                 spec["paths"][endpoint.path] = path_item
             else:
@@ -49,11 +50,13 @@ class OpenAPIGenerator(BaseGenerator):
     def _endpoint_to_path_item(self, endpoint: Endpoint) -> dict[str, Any]:
         """Convert an Endpoint to OpenAPI path item."""
         method = endpoint.method.value.lower()
-        
+
         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 {
@@ -82,7 +89,7 @@ class OpenAPIGenerator(BaseGenerator):
                 "200": {"description": "Successful response"},
                 "default": {"description": "Error response"},
             }
-        
+
         result = {}
         for resp in responses:
             resp_obj = {"description": resp.description}
@@ -91,5 +98,5 @@ class OpenAPIGenerator(BaseGenerator):
                     resp.content_type: {"schema": resp.example}
                 }
             result[str(resp.status_code)] = resp_obj
-        
+
         return result