Dynamic Rendering

• Prefer render in block.json (dynamic render file).
• Alternative: pass render_callback when registering the block in PHP.

Wrapper attributes

In PHP render output, always use:

• get_block_wrapper_attributes()

This preserves support-generated classes/styles.

Practical checklist

• Ensure PHP file exists and is reachable from the block root.
• Ensure registration runs on every request (not only in admin).
• Keep save() empty or null for fully dynamic output, unless you intentionally save fallback markup.