herocast - better onchain signup ✅ image upload ✅ more channels ✅

new /herocast log #11 and release: better onchain signup ✅ image upload ✅ more channels ✅ https://paragraph.xyz/@hellno/herocast-log-nr11?referrer=0x6d9fFaede2c6CD9bb48becE230ad589e0E0D981c