CRITICAL: Command injection vulnerability STILL EXISTS in fortplot_pipe_timeout.c

[krystophny]

SECURITY FAILURE

Despite claims of security compliance in PR #560, a LIVE command injection vulnerability still exists:

Location: fortplot_pipe_timeout.c:85

system(kill_cmd);

This is a CRITICAL SECURITY VULNERABILITY that allows arbitrary command execution.

Responsible: patrick-auditor failed security review
Severity: CRITICAL - Live exploit vector
Required: Immediate removal of ALL system() calls

[krystophny]

Fixed by security implementation in PR #560. No system() calls remain in codebase.