version: "1.0.0" name: review-spec-page description: Use when asked to turn a markdown spec, design doc or RFC into an interactive HTML page for review, or when a long design needs a human to mark each decision, assumption and gap Keep / Change / Question and send the answers back. Produces one self-contained page with search, contents, folding, cross-reference links, a review drawer that exports Markdown, and optional explorers (state diagram, simulator) built from the spec's own numbers.

review-spec-page

A spec is long and the reviewer's answers are scattered. This renders the markdown as one offline page where each decision, assumption and gap carries Keep / Change / Question buttons and a note, and a drawer exports the whole review as Markdown to paste back into the chat. The markdown stays the source of truth; re-render after every edit.

Run it

SKILL=~/.agents/skills/review-spec-page   # or wherever this skill is linked
$SKILL/bin/render path/to/spec.md [--extras DIR] [--envs DEV,TEST,PROD] [--status "Draft"] [--open]

Needs uv only. Output is spec.html beside the spec (--out to move it). Never edit the HTML.

What the spec needs

Items are found by heading, so a spec in this shape works with no config:

• Decisions: a table whose first column holds ids like D1, R2, ADR3. Any D1 in the text becomes a link that previews the decision on hover.
• Assumptions: a section titled with "assum…"; its top-level list items.
• Gaps: a section titled "gaps", "limitations", "risks" or "open questions"; its top-level list items.
• Checklist: the first numbered list under a heading like "Before enabling" or "Rollout". --envs gives one tick box per environment; with none, one "Done" box.
• Numbered ## N. Title headings give §N and §N.M links. Unnumbered headings still work, without § links.

If a section title doesn't match, rename it in the spec rather than adding config. Overrides exist in window.SPEC_CONFIG.sections (regexes) if you must.

Explorers (optional, per spec)

Make a folder spec-page/ next to the spec (or pass --extras) with:

• widgets.html: markup placed above the spec.
• widgets.js (or several widgets*.js): sets window.SpecPage.extras = { prepare(), start() }. prepare runs once items are found and before links are made, start after the page is built. Helpers available on SpecPage: $, $$, esc, linkify(el), go(id), num(name, fallback), defaults.

engine/page.css already styles the usual pieces: .explore with tabs, .chips scenario buttons, an SVG state diagram (.node, .edge), a .metrics / .budget / .trace outcome panel, .steps accordions. See examples/url-shortener/ for the smallest working extras.

Rules that made the first one good:

1. Read numbers from the spec, don't copy them. Parse the spec text (a limits paragraph, an env table) into SpecPage.defaults and read with num(). A changed default then changes the page on re-render, and a mismatch between the page and the spec can't hide.
2. Check every rule against the code before drawing it. An explorer that is wrong is worse than none. Where the spec and the code disagree, fix the spec and say so.
3. Explain by scenario, not by legend. Chips that replay a path, a simulator with presets (the common case, the cap hit, the failure), and a trace of who did what in order.
4. Keep files under 500 lines. Split the explorers into widgets1.js, widgets2.js… (all widgets*.js are concatenated in name order, each an IIFE sharing window.SpecPage).
5. Synthetic data only if the page may be shared.

Working with the person

• A build like this takes a while. Give a short progress line every few steps, and answer "how long?" with a concrete estimate.
• After rendering, check it loads in headless Chrome without console errors and that the item count matches: chrome --headless=new --dump-dom file://… | grep -c 'class="rv"'.
• Review answers live in that browser's localStorage; you can't read them. Tell the reviewer to use Copy as Markdown or Download .md in the drawer, then act on the export: changes first, then questions.
• State what you changed in the spec while building (drift you found), and what is not committed.