Agent Skills: html-specs

Create engaging, self-contained HTML slide decks for specs, implementation plans, ADRs, brainstorms, and decision docs — keyboard-navigable single-file decks with a dark slate + emerald design system and ready-made components (callouts, option grids, timelines, terminal blocks, diagrams). Use whenever the user asks for a spec, plan, design doc, ADR, decision record, proposal, RFC, or brainstorm writeup, even if they don't say "HTML" or "slides" — writing these as markdown is the failure mode this skill exists to prevent.