グカネータ作成 (#041) (#362)

Reviewed-on: http://git.miteruzo.com/miteruzo/btrc-hub/pulls/362
Co-authored-by: miteruzo <miteruzo@naver.com>
Co-committed-by: miteruzo <miteruzo@naver.com>

frontend/AGENTS.md

@@ -33,6 +33,10 @@ npm run lint
 
 If either command cannot be run or fails, report the exact command and failure.
 
+Do not create, modify, or run tests unless the user explicitly asks for test
+work. When the user asks for tests, keep working and rerun them until they
+pass or the remaining failure is clearly blocked.
+
 ## TypeScript
 
 - TypeScript is strict. `tsconfig.app.json` enables `strict`,