Add Spanish Block Editor Creator Lab blueprint

[fellyph]

What

• Add a Spanish WordPress Playground learning lab for the 30-hour "Estructura" program.
• Install and activate the Learn Creator Lab block theme.
• Create a landing hub, eight published exercise guides, editable starter drafts, sample posts, and editor-specific actions.
• Use registered native core/* blocks throughout generated content.
• Add an idempotent runtime audit that rejects Custom HTML, Classic/freeform, Shortcode, missing, unregistered, and non-core blocks.

Why

The blueprint gives beginner students a disposable WordPress environment where they can read each mission and complete it directly in the Post Editor or Site Editor. Native block serialization keeps every starter structure editable and avoids raw HTML or block-recovery states.

Testing

• php -l blueprints/block-editor-creator-lab/setup.php
• npm run validate:pr-blueprints
• npx @wp-playground/cli@3.1.20 run-blueprint --wp=6.9 --php=8.3 --blueprint=<branch blueprint URL>
• Fresh and repeated Blueprint execution
• Gutenberg editor audit of 16 pages and 4 posts, covering 447 blocks
• Confirmed zero invalid-block warnings, forbidden blocks, non-core namespaces, or console errors
• Confirmed every editor block tree remains identical after reload

Preview

Launch the Block Editor Creator Lab in WordPress Playground

[github-actions]

Test using WordPress Playground

The changes in this pull request can be previewed and tested using a WordPress Playground instance.

WordPress Playground is an experimental project that creates a full WordPress instance entirely within the browser.

Some things to be aware of

• All changes will be lost when closing a tab with a Playground instance.
• All changes will be lost when refreshing the page.
• A fresh instance is created each time one of the links below is clicked.

For more details about these limitations and more, check out the Limitations page in the WordPress Playground documentation.

Blueprint previews

• Open block-editor-creator-lab in WordPress Playground