Fix remaining flake8 issues

- Added missing newlines at end of all Python files
- Fixed E302 issue in utils/logger.py by adding proper blank lines
- All critical flake8 errors (E9,F63,F7,F82) now resolved
- CI should pass flake8-lint checks

Author: vinod0m

src/llm/base.py

@@ -170,4 +170,4 @@ def get_model_info(self) -> Dict[str, Any]:
             'type': 'mock',
             'max_tokens': 4000,
             'capabilities': ['text_generation', 'conversation']
-        }
+        }

src/parsers/mermaid_parser.py

@@ -429,4 +429,4 @@ def _extract_global_tags(self, content: str) -> List[str]:
         class_matches = re.findall(r'class\s+\w+\s+(\w+)', content)
         tags.extend(class_matches)
 
-        return list(set(tags))  # Remove duplicates
+        return list(set(tags))  # Remove duplicates

src/utils/logger.py

@@ -39,4 +39,4 @@ def get_logger(name: str, level: Optional[str] = None) -> logging.Logger:
     else:
         logger.setLevel(logging.INFO)
 
-    return logger
+    return logger