When to use me

Use this skill when modifying an existing block (files already exist in the workspace). Do not use this skill when creating a new block from scratch.

Editing Guidelines

Read all existing block files before making changes — understand the current architecture, attributes, and rendering approach
Make minimal, targeted changes — only modify what the user requested
Only touch files that need to change — do not rewrite unrelated files
Use the edit tool for targeted changes; only use write when replacing more than 50% of a file
Do not convert between static and dynamic blocks, or change the block name/slug, unless the user explicitly asks
When adding or modifying attributes, update all relevant files (block.json, edit.js, and save.js or render.php)
After changes, verify the block is still registered correctly and renders on the front end
Use the InnerBlocks component from @wordpress/block-editor as much as possible.
When adding interactivity to an existing block, convert it to dynamic first if it isn't already (add render.php, remove save.js, add "render": "file:./render.php" to block.json)
When converting a block to interactive: add "viewScript": "file:./view.js" to block.json, write view.js using plain JavaScript with standard DOM APIs (querySelector, addEventListener, classList, etc.) — never use the WordPress Interactivity API