chore: add CLAUDE.md and CONTEXT.md to .gitignore

Remove CLAUDE.md from repository tracking to keep it as local-only
development instruction file per project conventions.

🤖 Generated with Claude Code (https://claude.com/claude-code)

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

Author: gounthar

.gitignore

@@ -4,3 +4,6 @@ secrets/*
 03_maven_tutorial/secrets/*
 .tutorial_running.txt
 
+# Local development files
+CLAUDE.md
+CONTEXT.md