docs: add AI security review notice to README

shps951023 · shps951023 · commit 6e7da8266160 · 2026-02-22T23:41:10.000+08:00
diff --git a/README.md b/README.md
@@ -2,6 +2,8 @@
 
 A minimal, zero-dependency .NET library for generating PDF documents from text and Excel (.xlsx) files.
 
+> **Security**: All PRs are automatically reviewed by AI for security vulnerabilities.
+
 ## Features
 
 - **Text-to-PDF** — Create PDF documents with positioned or auto-wrapped text
