render 4

Markdown rendering for DeepSeek Harness sent user messages: every message bubble renders lists, code, tables, quotes and inline formatting through the host's own Markdown pipeline, while queues, previews and the composer keep their plain projection.

Rendered fetch (capture) host service: one Remote verb renders a URL in a managed headless Chrome and returns the serialized rendered page with CSSOM styles inlined, so static extractors can read JS-heavy pages

Render agent-authored ```dsh-card HTML as sandboxed interactive iframes inline in the conversation

Contract check for DeepSeek Harness plugins: statically verifies that registered tools' output.render() returns ContentBlock[], and warns when a session event type falls outside the kernel vocabulary. Warn-only. 契约体检插件（不检测恶意）。