Add frontend component generator to claude.md (#40844)

May help Claude write frontend component boilerplate more consistently

Author: jacobshandling

.claude/CLAUDE.md

@@ -9,4 +9,7 @@ MYSQL_TEST=1 go test ./server/datastore/mysql/...
 MYSQL_TEST=1 REDIS_TEST=1 go test ./server/service/...
 
 # Run a specific test
-MYSQL_TEST=1 go test -run TestFunctionName ./server/datastore/mysql/...
+MYSQL_TEST=1 go test -run TestFunctionName ./server/datastore/mysql/...
+
+# Generate boilerplate for a new frontend component, including associated stylesheet, tests, and storybook
+./frontend/components/generate -n RequiredPascalCaseNameOfTheComponent -p optional/path/to/desired/parent/directory