How a Blocks project is stored

The editable visual project is stored separately from generated browser output. The model records sprites, scripts, block inputs and editor information.

Before the project runs, Blocks Studio can materialize the block model into real web files. That is how the visual editor participates in the same RC runtime as hand-written projects.

• Generated index.html contains the playable document/runtime.
• Generated CSS and JavaScript behavior remain browser-compatible.

When a project first receives a Blocks edition, an existing hand-written index can be preserved under the Blocks metadata area rather than silently discarded.

For a Blocks-first project, edit behavior in the block model and regenerate. Use Code mode mainly for inspection or deliberately advanced integration.