feat(skills): add slides skill for presentation slides/deck design

.claude/skills/slides/SKILL.md

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+---
+name: ckm:slides
+description: Create strategic HTML presentations with Chart.js, design tokens, responsive layouts, copywriting formulas, and contextual slide strategies.
+argument-hint: "[topic] [slide-count]"
+metadata:
+  author: claudekit
+  version: "1.0.0"
+---
+
+# Slides
+
+Strategic HTML presentation design with data visualization.
+
+<args>$ARGUMENTS</args>
+
+## When to Use
+
+- Marketing presentations and pitch decks
+- Data-driven slides with Chart.js
+- Strategic slide design with layout patterns
+- Copywriting-optimized presentation content
+
+## Subcommands
+
+| Subcommand | Description | Reference |
+|------------|-------------|-----------|
+| `create` | Create strategic presentation slides | `references/create.md` |
+
+## References (Knowledge Base)
+
+| Topic | File |
+|-------|------|
+| Layout Patterns | `references/layout-patterns.md` |
+| HTML Template | `references/html-template.md` |
+| Copywriting Formulas | `references/copywriting-formulas.md` |
+| Slide Strategies | `references/slide-strategies.md` |
+
+## Routing
+
+1. Parse subcommand from `$ARGUMENTS` (first word)
+2. Load corresponding `references/{subcommand}.md`
+3. Execute with remaining arguments

.claude/skills/slides/references/copywriting-formulas.md

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+# Copywriting Formulas
+
+25 formulas for persuasive slide copy.
+
+## Core Formulas
+
+### PAS (Problem-Agitate-Solution)
+**Use:** Problem slides, pain points
+**Components:** Problem → Agitate → Solution
+**Template:** "[Pain point]? Every [time frame], [consequence]. [Solution] fixes this."
+
+### AIDA (Attention-Interest-Desire-Action)
+**Use:** CTAs, closing slides
+**Components:** Attention → Interest → Desire → Action
+**Template:** "[Bold statement]. [Benefit detail]. [Social proof]. [CTA]."
+
+### FAB (Features-Advantages-Benefits)
+**Use:** Feature slides, product showcases
+**Components:** Feature → Advantage → Benefit
+**Template:** "[Feature] lets you [advantage], so you can [benefit]."
+
+### Cost of Inaction
+**Use:** Agitation slides, urgency
+**Components:** Status Quo → Loss → Time Decay
+**Template:** "Without [solution], you're losing [amount] every [timeframe]."
+
+### Before-After-Bridge
+**Use:** Transformation slides, case studies
+**Components:** Before → After → Bridge
+**Template:** "[Pain point before]. [Desired state after]. [Your solution] is the bridge."
+
+## Formula-to-Slide Mapping
+
+| Slide Type | Primary Formula | Emotion |
+|------------|-----------------|---------|
+| Title/Hook | AIDA, Hook | curiosity |
+| Problem | PAS, Agitate | frustration |
+| Cost/Risk | Cost of Inaction | fear |
+| Solution | FAB, BAB | hope |
+| Features | FAB | confidence |
+| Traction | Proof Stack | trust |
+| Social Proof | Testimonial | trust |
+| Pricing | Value Stack | confidence |
+| CTA | AIDA, Urgency | urgency |
+
+## Headline Patterns
+
+### Power Words
+- "Stop [bad thing]"
+- "Get [desired result] in [timeframe]"
+- "The [adjective] way to [action]"
+- "Why [audience] choose [product]"
+- "[Number] ways to [achieve goal]"
+
+### Contrast Patterns
+- "[Old way] is dead. Meet [new way]."
+- "Don't [bad action]. Instead, [good action]."
+- "From [pain point] to [benefit]."
+
+### Social Proof Patterns
+- "[Number]+ [users/companies] trust [product]"
+- "Join [notable company] and [notable company]"
+- "As seen in [publication]"
+
+## Search Commands
+
+```bash
+# Find formula for slide type
+python .claude/skills/design-system/scripts/search-slides.py "problem agitation" -d copy
+
+# Get emotion-appropriate formula
+python .claude/skills/design-system/scripts/search-slides.py "urgency cta" -d copy
+```
+
+## Quick Reference
+
+| Need | Use Formula |
+|------|------------|
+| Create urgency | Cost of Inaction, Scarcity |
+| Build trust | Social Proof, Testimonial |
+| Show value | FAB, Value Stack |
+| Drive action | AIDA, CTA |
+| Tell story | BAB, Story Arc |
+| Present data | Proof Stack |

.claude/skills/slides/references/create.md

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+Invoke `slides` skill to create persuasive HTML slides using design tokens, Chart.js, and the slide knowledge database.
+
+## Task
+<task>$ARGUMENTS</task>

.claude/skills/slides/references/html-template.md

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+# HTML Slide Template
+
+Complete HTML structure with navigation, tokens, and Chart.js integration.
+
+## Base Structure
+
+```html
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Presentation Title</title>
+    <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1/dist/chart.umd.min.js"></script>
+    <style>
+        /* Paste embed-tokens.cjs output here */
+        :root {
+            --color-primary: #FF6B6B;
+            --color-background: #0D0D0D;
+            /* ... more tokens */
+        }
+
+        /* Base slide styles */
+        * { margin: 0; padding: 0; box-sizing: border-box; }
+        body {
+            background: var(--color-background);
+            color: #fff;
+            font-family: var(--typography-font-body, 'Inter', sans-serif);
+            overflow: hidden;
+        }
+
+        /* 16:9 Aspect Ratio Container (desktop) */
+        .slide-deck {
+            position: relative;
+            width: 100vw;
+            height: 100vh;
+            overflow: hidden;
+        }
+
+        @media (min-width: 769px) {
+            .slide-deck {
+                /* Lock to 16:9 — letterbox if viewport ratio differs */
+                max-width: calc(100vh * 16 / 9);
+                max-height: calc(100vw * 9 / 16);
+                margin: auto;
+                position: absolute;
+                inset: 0;
+            }
+        }
+
+        .slide {
+            position: absolute;
+            width: 100%; height: 100%;
+            display: flex;
+            flex-direction: column;
+            justify-content: center;
+            align-items: center;
+            text-align: center;
+            padding: 60px;
+            opacity: 0;
+            visibility: hidden;
+            transition: opacity 0.4s;
+            background: var(--color-background);
+            overflow: hidden; /* Prevent content overflow */
+        }
+
+        .slide.active { opacity: 1; visibility: visible; }
+
+        /* Slide inner wrapper — constrains content within safe area */
+        .slide-content {
+            width: 100%;
+            max-width: 100%;
+            max-height: 100%;
+            overflow: hidden;
+            display: flex;
+            flex-direction: column;
+            justify-content: center;
+            align-items: center;
+            gap: 16px;
+        }
+
+        /* Typography */
+        h1, h2 { font-family: var(--typography-font-heading, 'Space Grotesk', sans-serif); }
+        .slide-title {
+            font-size: clamp(32px, 6vw, 80px);
+            background: var(--primitive-gradient-primary, linear-gradient(135deg, #FF6B6B, #FF8E53));
+            -webkit-background-clip: text;
+            -webkit-text-fill-color: transparent;
+            line-height: 1.1;
+        }
+
+        /* ===== RESPONSIVE BREAKPOINTS ===== */
+
+        /* Tablet (portrait) */
+        @media (max-width: 768px) {
+            .slide { padding: 32px 24px; }
+            .slide-title { font-size: clamp(28px, 5vw, 48px); }
+            h2 { font-size: clamp(20px, 4vw, 32px); }
+            p, li { font-size: clamp(14px, 2.5vw, 18px); }
+        }
+
+        /* Mobile */
+        @media (max-width: 480px) {
+            .slide { padding: 24px 16px; }
+            .slide-title { font-size: clamp(22px, 6vw, 36px); }
+            h2 { font-size: clamp(18px, 4.5vw, 28px); }
+            p, li { font-size: clamp(12px, 3vw, 16px); }
+            .nav-controls { bottom: 16px; gap: 12px; }
+            .nav-btn { width: 32px; height: 32px; font-size: 14px; }
+        }
+
+        /* Navigation */
+        .progress-bar {
+            position: fixed;
+            top: 0; left: 0;
+            height: 3px;
+            background: var(--color-primary);
+            transition: width 0.3s;
+            z-index: 1000;
+        }
+        .nav-controls {
+            position: fixed;
+            bottom: 30px;
+            left: 50%;
+            transform: translateX(-50%);
+            display: flex;
+            align-items: center;
+            gap: 20px;
+            z-index: 1000;
+        }
+        .nav-btn {
+            background: rgba(255,255,255,0.1);
+            border: none;
+            color: #fff;
+            width: 40px; height: 40px;
+            border-radius: 50%;
+            cursor: pointer;
+            font-size: 18px;
+        }
+        .nav-btn:hover { background: rgba(255,255,255,0.2); }
+        .slide-counter { color: rgba(255,255,255,0.6); font-size: 14px; }
+    </style>
+</head>
+<body>
+    <!-- Progress Bar -->
+    <div class="progress-bar" id="progressBar"></div>
+
+    <!-- Slide Deck Container (16:9 on desktop) -->
+    <div class="slide-deck">
+
+    <!-- Slides -->
+    <div class="slide active">
+        <div class="slide-content">
+            <h1 class="slide-title">Title Slide</h1>
+            <p>Subtitle or tagline</p>
+        </div>
+    </div>
+
+    <!-- More slides... (always wrap content in .slide-content) -->
+
+    </div><!-- /.slide-deck -->
+
+    <!-- Navigation -->
+    <div class="nav-controls">
+        <button class="nav-btn" onclick="prevSlide()">←</button>
+        <span class="slide-counter"><span id="current">1</span> / <span id="total">9</span></span>
+        <button class="nav-btn" onclick="nextSlide()">→</button>
+    </div>
+
+    <script>
+        let current = 1;
+        const total = document.querySelectorAll('.slide').length;
+        document.getElementById('total').textContent = total;
+
+        function showSlide(n) {
+            if (n < 1) n = 1;
+            if (n > total) n = total;
+            current = n;
+            document.querySelectorAll('.slide').forEach((s, i) => {
+                s.classList.toggle('active', i === n - 1);
+            });
+            document.getElementById('current').textContent = n;
+            document.getElementById('progressBar').style.width = (n / total * 100) + '%';
+        }
+
+        function nextSlide() { showSlide(current + 1); }
+        function prevSlide() { showSlide(current - 1); }
+
+        document.addEventListener('keydown', (e) => {
+            if (e.key === 'ArrowRight' || e.key === ' ') { e.preventDefault(); nextSlide(); }
+            if (e.key === 'ArrowLeft') { e.preventDefault(); prevSlide(); }
+        });
+
+        document.addEventListener('click', (e) => {
+            if (!e.target.closest('.nav-controls')) nextSlide();
+        });
+
+        showSlide(1);
+    </script>
+</body>
+</html>
+```
+
+## Chart.js Integration
+
+```html
+<div class="chart-container" style="width: min(80%, 600px); height: clamp(200px, 40vh, 350px);">
+    <canvas id="revenueChart"></canvas>
+</div>
+
+<script>
+new Chart(document.getElementById('revenueChart'), {
+    type: 'line', // or 'bar', 'doughnut', 'radar'
+    data: {
+        labels: ['Sep', 'Oct', 'Nov', 'Dec'],
+        datasets: [{
+            label: 'MRR ($K)',
+            data: [5, 12, 28, 45],
+            borderColor: '#FF6B6B',
+            backgroundColor: 'rgba(255, 107, 107, 0.1)',
+            borderWidth: 3,
+            fill: true,
+            tension: 0.4
+        }]
+    },
+    options: {
+        responsive: true,
+        maintainAspectRatio: false,
+        plugins: { legend: { display: false } },
+        scales: {
+            x: { grid: { color: 'rgba(255,255,255,0.05)' }, ticks: { color: '#B8B8D0' } },
+            y: { grid: { color: 'rgba(255,255,255,0.05)' }, ticks: { color: '#B8B8D0' } }
+        }
+    }
+});
+</script>
+```
+
+## Animation Classes
+
+```css
+/* Fade Up */
+.animate-fade-up {
+    animation: fadeUp 0.6s ease-out forwards;
+    opacity: 0;
+}
+@keyframes fadeUp {
+    from { opacity: 0; transform: translateY(30px); }
+    to { opacity: 1; transform: translateY(0); }
+}
+
+/* Count Animation */
+.animate-count { animation: countUp 1s ease-out forwards; }
+
+/* Scale */
+.animate-scale {
+    animation: scaleIn 0.5s ease-out forwards;
+}
+@keyframes scaleIn {
+    from { opacity: 0; transform: scale(0.9); }
+    to { opacity: 1; transform: scale(1); }
+}
+
+/* Stagger Children */
+.animate-stagger > * {
+    opacity: 0;
+    animation: fadeUp 0.5s ease-out forwards;
+}
+.animate-stagger > *:nth-child(1) { animation-delay: 0.1s; }
+.animate-stagger > *:nth-child(2) { animation-delay: 0.2s; }
+.animate-stagger > *:nth-child(3) { animation-delay: 0.3s; }
+.animate-stagger > *:nth-child(4) { animation-delay: 0.4s; }
+```
+
+## Background Images
+
+```html
+<div class="slide slide-with-bg" style="background-image: url('https://images.pexels.com/...')">
+    <div class="overlay" style="background: linear-gradient(135deg, rgba(13,13,13,0.9), rgba(13,13,13,0.7))"></div>
+    <div class="content" style="position: relative; z-index: 1;">
+        <!-- Slide content -->
+    </div>
+</div>
+```
+
+## CSS Variables Reference
+
+| Variable | Usage |
+|----------|-------|
+| `--color-primary` | Brand primary (CTA, highlights) |
+| `--color-background` | Slide background |
+| `--color-secondary` | Secondary elements |
+| `--primitive-gradient-primary` | Title gradients |
+| `--typography-font-heading` | Headlines |
+| `--typography-font-body` | Body text |

.claude/skills/slides/references/layout-patterns.md

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+# Layout Patterns
+
+25 slide layouts with CSS structures and animation classes.
+
+## Layout Selection by Use Case
+
+| Layout | Use Case | Animation |
+|--------|----------|-----------|
+| Title Slide | Opening/first impression | `animate-fade-up` |
+| Problem Statement | Establish pain point | `animate-stagger` |
+| Solution Overview | Introduce solution | `animate-scale` |
+| Feature Grid | Show capabilities (3-6 cards) | `animate-stagger` |
+| Metrics Dashboard | Display KPIs (3-4 metrics) | `animate-stagger-scale` |
+| Comparison Table | Compare options | `animate-fade-up` |
+| Timeline Flow | Show progression | `animate-stagger` |
+| Team Grid | Introduce people | `animate-stagger` |
+| Quote Testimonial | Customer endorsement | `animate-fade-up` |
+| Two Column Split | Compare/contrast | `animate-fade-up` |
+| Big Number Hero | Single powerful metric | `animate-count` |
+| Product Screenshot | Show product UI | `animate-scale` |
+| Pricing Cards | Present tiers | `animate-stagger` |
+| CTA Closing | Drive action | `animate-pulse` |
+
+## CSS Structures
+
+### Title Slide
+```css
+.slide-title {
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    text-align: center;
+}
+```
+
+### Two Column Split
+```css
+.slide-split {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 48px;
+    align-items: center;
+}
+@media (max-width: 768px) {
+    .slide-split { grid-template-columns: 1fr; gap: 24px; }
+}
+```
+
+### Feature Grid (3 columns)
+```css
+.slide-features {
+    display: grid;
+    grid-template-columns: repeat(3, 1fr);
+    gap: 24px;
+}
+@media (max-width: 768px) {
+    .slide-features { grid-template-columns: repeat(2, 1fr); gap: 16px; }
+}
+@media (max-width: 480px) {
+    .slide-features { grid-template-columns: 1fr; }
+}
+```
+
+### Metrics Dashboard (4 columns)
+```css
+.slide-metrics {
+    display: grid;
+    grid-template-columns: repeat(4, 1fr);
+    gap: 16px;
+}
+@media (max-width: 768px) {
+    .slide-metrics { grid-template-columns: repeat(2, 1fr); }
+}
+@media (max-width: 480px) {
+    .slide-metrics { grid-template-columns: 1fr; }
+}
+```
+
+## Component Variants
+
+### Card Styles
+| Style | CSS Class | Use For |
+|-------|-----------|---------|
+| Icon Left | `.card-icon-left` | Features with icons |
+| Accent Bar | `.card-accent-bar` | Highlighted features |
+| Metric Card | `.card-metric` | Numbers/stats |
+| Avatar Card | `.card-avatar` | Team members |
+| Pricing Card | `.card-pricing` | Price tiers |
+
+### Metric Styles
+| Style | Effect |
+|-------|--------|
+| `gradient-number` | Gradient text on numbers |
+| `oversized` | Extra large (120px+) |
+| `sparkline` | Small inline chart |
+| `funnel-numbers` | Conversion stages |
+
+## Visual Treatments
+
+| Treatment | When to Use |
+|-----------|-------------|
+| `gradient-glow` | Title slides, CTAs |
+| `subtle-border` | Problem statements |
+| `icon-top` | Feature grids |
+| `screenshot-shadow` | Product screenshots |
+| `popular-highlight` | Pricing (scale 1.05) |
+| `bg-overlay` | Background images |
+| `contrast-pair` | Before/after |
+| `logo-grayscale` | Client logos |
+
+## Search Commands
+
+```bash
+# Find layout for specific use
+python .claude/skills/design-system/scripts/search-slides.py "metrics dashboard" -d layout
+
+# Contextual recommendation
+python .claude/skills/design-system/scripts/search-slides.py "traction slide" \
+  --context --position 4 --total 10
+```
+
+## Layout Decision Flow
+
+```
+1. What's the slide goal?
+   └─> Search layout-logic.csv
+
+2. What emotion should it trigger?
+   └─> Search color-logic.csv
+
+3. What's the content type?
+   └─> Search typography.csv
+
+4. Should it break pattern?
+   └─> Check position (1/3, 2/3) → Use full-bleed
+```

.claude/skills/slides/references/slide-strategies.md

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+# Slide Strategies
+
+15 proven deck structures with emotion arcs.
+
+## Strategy Selection
+
+| Strategy | Slides | Goal | Audience |
+|----------|--------|------|----------|
+| YC Seed Deck | 10-12 | Raise seed funding | VCs |
+| Guy Kawasaki | 10 | Pitch in 20 min | Investors |
+| Series A | 12-15 | Raise Series A | Growth VCs |
+| Product Demo | 5-8 | Demonstrate value | Prospects |
+| Sales Pitch | 7-10 | Close deal | Qualified leads |
+| Nancy Duarte Sparkline | Varies | Transform perspective | Any |
+| Problem-Solution-Benefit | 3-5 | Quick persuasion | Time-pressed |
+| QBR | 10-15 | Update stakeholders | Leadership |
+| Team All-Hands | 8-12 | Align team | Employees |
+| Conference Talk | 15-25 | Thought leadership | Attendees |
+| Workshop | 20-40 | Teach skills | Learners |
+| Case Study | 8-12 | Prove value | Prospects |
+| Competitive Analysis | 6-10 | Strategic decisions | Internal |
+| Board Meeting | 15-20 | Update board | Directors |
+| Webinar | 20-30 | Generate leads | Registrants |
+
+## Common Structures
+
+### YC Seed Deck (10 slides)
+1. Title/Hook
+2. Problem
+3. Solution
+4. Traction
+5. Market
+6. Product
+7. Business Model
+8. Team
+9. Financials
+10. The Ask
+
+**Emotion arc:** curiosity→frustration→hope→confidence→trust→urgency
+
+### Sales Pitch (9 slides)
+1. Personalized Hook
+2. Their Problem
+3. Cost of Inaction
+4. Your Solution
+5. Proof/Case Studies
+6. Differentiators
+7. Pricing/ROI
+8. Objection Handling
+9. CTA + Next Steps
+
+**Emotion arc:** connection→frustration→fear→hope→trust→confidence→urgency
+
+### Product Demo (6 slides)
+1. Hook/Problem
+2. Solution Overview
+3. Live Demo/Screenshots
+4. Key Features
+5. Benefits/Pricing
+6. CTA
+
+**Emotion arc:** curiosity→frustration→hope→confidence→urgency
+
+## Duarte Sparkline Pattern
+
+Alternate between "What Is" (current pain) and "What Could Be" (better future):
+
+```
+What Is → What Could Be → What Is → What Could Be → New Bliss
+(pain)     (hope)         (pain)     (hope)         (resolution)
+```
+
+Pattern breaks at 1/3 and 2/3 positions create engagement peaks.
+
+## Search Commands
+
+```bash
+# Find strategy by goal
+python .claude/skills/design-system/scripts/search-slides.py "investor pitch" -d strategy
+
+# Get emotion arc
+python .claude/skills/design-system/scripts/search-slides.py "series a funding" -d strategy --json
+```
+
+## Matching Strategy to Context
+
+| Context | Recommended Strategy |
+|---------|---------------------|
+| Raising money | YC Seed, Series A, Guy Kawasaki |
+| Selling product | Sales Pitch, Product Demo |
+| Internal update | QBR, All-Hands, Board Meeting |
+| Public speaking | Conference Talk, Workshop |
+| Proving value | Case Study, Competitive Analysis |
+| Lead generation | Webinar |