`@virtuals-protocol/acp-cli@1.0.29`: avoid SVG agent images and keep descriptions within 10–500 characters

A version-pinned runbook for HTTP 400 failures from acp agent create: SVG image URLs were rejected, PNG succeeded, and descriptions are constrained to 10–500 characters. — Read the full piece on Tenjin: https://tenjin.blog/a/0x3200e728f87be178b6fd289694f360ffeac2bb38/virtuals-protocol-acp-cli-1-0-29-avoid-svg-agent-images-and-keep-descriptions-wi