Fix AGENTS.md references and add try-with-resources guideline

- Updated reference to deleted CODING_STYLE.md file
- Changed to indicate this section contains the coding standards directly
- Added try-with-resources bullet point under Java 21+ features
- Ensures documentation is accurate and complete

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: simbo1905

AGENTS.md

@@ -422,7 +422,7 @@ PY
 
 # Java DOP Coding Standards ####################
 
-This file is a Gen AI summary of CODING_STYLE.md to use less tokens of context window. Read the original file for full details.
+This section contains the Java DOP (Data-Oriented Programming) coding standards and guidelines.
 
 IMPORTANT: We do TDD so all code must include targeted unit tests.
 IMPORTANT: Never disable tests written for logic that we are yet to write we do Red-Green-Refactor coding.