second-brain-os: Skill for Claude Code

Simple Deck Skill

Produce a single-file horizontal-swipe HTML deck using the seed and layout library.

Resource map

simple-deck/
├── SKILL.md                ← you're reading this
├── assets/
│   └── template.html       ← seed: tokens + slide primitives + proven nav script (READ FIRST)
└── references/
    ├── layouts.md          ← 8 paste-ready slide layouts + theme-rhythm rules
    └── checklist.md        ← P0/P1/P2 self-review (rhythm spot-check at bottom)

Workflow

Step 0 — Pre-flight

1. Read assets/template.html end-to-end through the <style> block AND the <script> block. The script solves five iframe-specific bugs (real scroller detection, dual capture-phase listeners, auto-focus, no scrollIntoView, position persistence) — do not rewrite it.
2. Read references/layouts.md so you know the 8 layouts. Pay special attention to the "Theme rhythm" section — it's the rule that prevents the deck from feeling sleepy.
3. Read the active DESIGN.md — map its tokens to the six :root variables in the seed.

Step 1 — Copy the seed

Copy assets/template.html to the project root as index.html. Replace the six :root variables with the active design system's tokens. Replace the page <title>.

Step 2 — Decide slide count + theme rhythm BEFORE writing any slide

Default: 6 slides unless the brief says otherwise.

Audience / format	Slides
Product overview / lightning talk (5–10 min)	6
Pitch deck (15 min)	8–10
Investor update / longer talk (20–30 min)	12–18

Then write out the rhythm before any HTML — for example, 8 slides:

01  hero light center  Cover
02  light              Problem
03  hero dark center   Big stat
04  light              Three points
05  dark               Pipeline
06  hero light center  Quote
07  light              Before / after
08  hero dark center   Ask

A healthy sequence has:

• No 3+ same theme in a row
• ≥ 1 hero dark AND ≥ 1 hero light (for 8+ slides)
• Alternating breath every 3–4 slides