doc-inject-guard: Scan documents for hidden prompt injection

Just shipped doc-inject-guard — a CLI that scans Word docs, PDFs, markdown, and HTML for embedded prompt injection payloads targeting AI agents. The Context Collapse AI worm proved malicious instructions in DOCX files can alter Copilot’s financial data and self-propagate. This tool acts as a document-level security gate with five detection modules, risk scoring, and CI integration. Read more.