docs: Eitri preview — architecture, Eitri questions, preview-provider protocol#377
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… protocol Records the decoupled-preview plan for Eitri: prefer an Eitri-hosted embeddable web preview (A), fall back to running eitri-cli in a deco sandbox (B), and reject reimplementing eitri-luminus primitives (C — approximate + fork/drift debt). Includes the questions that gate A/B for the Eitri team, and the preview-provider protocol: it reuses deco's EXISTING surface (the /live/previews/* render endpoint + the LiveControls editor::inject postMessage channel) hosted at a configurable origin, plus a per-app .deco/preview.json (provider/url/device-frame/auth). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Design + hand-off for Eitri preview, now that Studio decouples the CMS pane from the preview pane (preview can live in a different environment).
eitri-cliin a deco sandbox; reject C (reimplementingeitri-luminus— approximate + permanent fork/drift debt). Enabled by the fact thateitri-luminusis web-React (DaisyUI/Tailwind), not React Native — a browser can render it. Blocker noted: luminus/bifrost aren't on public npm (onlyeitri-cliis)./live/previews/*endpoint (resolvePreview.ts:GET ?props=&resolveChain=/POST {__resolveType, __props, __decofile}→ HTML),LiveControlseditor::injectpostMessage (+ recommendedready/error/resize/selectmessages),.deco/preview.json(provider/url/devicemobile-frame/auth).Docs-only (no release). Companion to
eitri-stack-design.md+deco-fs-contract.md.🤖 Generated with Claude Code
Summary by cubic
Add a design doc for Eitri preview that explains how Studio’s decoupled preview will work for Eitri apps: prefer an Eitri‑hosted web embed, fall back to a
eitri-clisandbox, and reject reimplementingeitri-luminus. It defines the v1 preview-provider protocol (reuse/live/previews/*,editor::injectpostMessage, app-level.deco/preview.json) and lists the open questions that gate A/B; docs-only change.Written for commit 28d42ff. Summary will update on new commits.