chore(repo): update CODEOWNERS (#14)

Author: mrz1836

.github/CODEOWNERS

@@ -7,6 +7,7 @@
 
 # GitHub Actions workflows
 .github/workflows/* @mrz1836
+.github/.env.shared @mrz1836
 
 # Documentation files
 *.md @mrz1836
@@ -19,3 +20,13 @@ Makefile @mrz1836
 # Go module dependencies
 go.mod @mrz1836
 go.sum @mrz1836
+
+# AI Config Files
+.github/AGENTS.md @mrz1836
+.cursorrules @mrz1836
+.github/CLAUDE.md @mrz1836
+sweep.yml @mrz1836
+
+# Repository configuration
+.github/labels.yml @mrz1836
+.github/dependabot.yml @mrz1836