docs: add AGENTS.md documentation section to UPDATE.md

- Added new section for AGENTS.md documentation
- Version 1.0.6
- Created date: 2025-08-20
- Describes the comprehensive guide features

Author: ivangrynenko

.cursor/UPDATE.md

@@ -3,10 +3,17 @@
 **Version:** 1.0.5
 **Installation Date:** 2025-08-20 09:12:08 UTC
 **Rules Installed:** 7 files
-**AGENTS.md Created:** 2025-08-20
 
 ## Installation Type
 - Core rules (default)
 
 ## Source
 Rules downloaded from: https://github.com/ivangrynenko/cursor-rules
+
+## AGENTS.md Documentation
+**Version:** 1.0.6
+**Created:** 2025-08-20
+- Comprehensive guide for using Cursor Rules with Cursor AI
+- Links to all rule bundles (Core, Web Stack, Python, JavaScript Security)
+- Tag-based selection documentation
+- Installation options reference