fix: do not distribute AGENTS.md and CLAUDE.md

Author: Litarnus

.gitattributes

@@ -12,6 +12,8 @@
 # Exclude non-essential files from dist
 /tests export-ignore
 /stubs export-ignore
+/AGENTS.md export-ignore
+/CLAUDE.md export-ignore
 /.appveyor.yml export-ignore
 /.craft.yml export-ignore
 /.editorconfig export-ignore