presentations

No clear supply-chain malware/backdoor behavior is visible in this snippet. However, there are significant security risks: (1) potential path traversal/arbitrary file read via URL routing (`serveFile(join(presDir, rest))` without strong traversal prevention), (2) likely XSS via unescaped insertion of presentation titles into HTML and potential injection through slide `content` into generated HTML, and (3) elevated risk around execSync due to string-based command construction. These issues warrant security review and hardening (path normalization allowlists, output encoding/sanitization, and using spawn/argument arrays instead of execSync strings).