Canvas Image Reference To Code

JarvisHub Image Reference To Code

Convert approved reference images into final code only after the model has real visual context.

Required Inputs

• Target webHero node id.
• Approved preview screenshot node ids.
• Any resolved webpage asset node ids or URLs.
• User approval evidence for the preview set.

Execution Rules

1. Call canvas_read_node_media_for_context with every approved preview screenshot node id before writing final code.
2. Generate code section by section in the same order as the preview screenshots.
3. Construct complete webHeroHtml and webHeroCss; do not construct or stage webHeroDocumentHtml because the server derives it.
4. In an Agent canvas workflow, call canvas_webhero_check_readiness, copy its exact flowUpdatedAt and previewNodeIds, stage only HTML/CSS with one stable session ID, then call canvas_webhero_code_commit.
5. When the frontend WebHero runner explicitly requests strict JSON and owns tool execution, return the requested HTML/CSS JSON to that runner; the runner must use the same readiness/stage/commit transaction before reporting success.
6. Never use canvas_update_node_data or a generic Flow patch for final WebHero code.
7. Ensure the final DOM contains at least one real <section> per approved preview screenshot.
8. Check that every CSS/JS #section-id reference exists in the DOM.

Prohibited

• Do not put final HTML/CSS/JS into a text node.
• Do not rely only on preview prompts or URLs; the model must read the actual images through multimodal context.
• Do not collapse multiple approved preview sections into a single generic section.
• Do not finish if the code contains CSS/JS for a section but no matching DOM section.
• Do not persist a model-produced webHeroDocumentHtml; accept only the server-derived document returned by commit.