fix(security-guidance): use cross-platform temp directory for debug log

[aarushisingh04]

problem

the hardcoded /tmp/ path in the debug log file fails on windows systems where the temp directory is typically C:\Users\...\AppData\Local\Temp\.

i used python's tempfile.gettempdir() to get the platform-appropriate temporary directory. the verified implementation uses standard library approach and tempfile.gettempdir() is documented to work cross-platform in python docs

this fixes compatibility for windows users and uses python standard library best practices for cross-platform temp file handling.