fix: add utf-8 encoding to report file writes

cli/main.py

@@ -1005,7 +1005,7 @@ def run_analysis():
                 if content:
                     file_name = f"{section_name}.md"
                     text = "\n".join(str(item) for item in content) if isinstance(content, list) else content
-                    with open(report_dir / file_name, "w") as f:
+                    with open(report_dir / file_name, "w", encoding="utf-8") as f:
                         f.write(text)
         return wrapper