Hi nostr:nprofile1qqsrx4k7vxeev3unrn5ty9qt9w4cxlsgzrqw752mh6fduqjgqs9chhgpr9mhxue69uhhyetvv9ujuam9d3kx7unyv4ezumn9wsqs6amnwvaz7tmwdaejumr0dsq36amnwvaz7tmwdaehgu3dwp6kytnhv4kxcmmjv3jhytnwv46q0pmzxf  , what tag(s) are required in a kind 31990 event to get a web application listed on spring.site?