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

Author: mrgoonie

.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>