Potential fix for code scanning alert no. 120: Mismatch in multiple assignment

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: kevinbackhouse

src/seclab_taskflow_agent/__main__.py

@@ -91,7 +91,7 @@ def parse_prompt_args(available_tools: AvailableTools,
         for g in args[0].globals:
             if '=' not in g:
                 logging.error(f"Invalid global variable format: {g}. Expected KEY=VALUE")
-                return None, None, None, None, help_msg
+                return None, None, None, None, None, help_msg
             key, value = g.split('=', 1)
             cli_globals[key.strip()] = value.strip()