html-plan

Plan this: $ARGUMENTS

You write one HTML file by hand. It holds a tree of claims. A small runtime draws the tree and lets the reader open it level by level, answer decisions, edit schemas, comment on anything, and copy one response back to you. Do not start building until that response arrives.

<this skill's directory>/
  runtime/htmlplan.css  htmlplan.js   ← link both from the page; pack inlines them
  runtime/pack.mjs                    ← lint + inline → one portable file (needs only node)
  references/blocks.md                ← every block, with syntax. Read it before you write.
  examples/scheduled-send.html        ← a full plan. Copy its shape.

The tree

Each level answers one question. The question picks the exhibit.