Plan step 39 (part 0): the step 38 review found <x-scaffold> and <x-tooltip> never referencing $attributes, so a caller's class and style were silently dropped. The scaffold's root is its single data-md-scaffold div; the tooltip's root, documented in its header, is the standalone wrapper it draws around a trigger (data-md-tooltip-anchor, merged with its own anchor-name) — passed an anchor instead, it renders only a popover fragment beside another component's root and takes nothing of the caller's. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9