Add LottieFiles motion-design skill

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0119deVM65AKpJiLTLhEdDg9

.agents/skills/motion-design/director/core-philosophy.md

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+# Core Philosophy
+
+## Three Pillars
+
+### Pillar 1: Emotional Intent
+Define target emotion before choosing any property.
+
+| Emotion | Character | Timing | Easing |
+|---------|----------|--------|--------|
+| Trust | Smooth, predictable | 300-400ms | Gentle curves |
+| Delight | Bouncy, surprising | 200-300ms | Overshoot |
+| Urgency | Sharp, direct | 100-200ms | Snappy ease-out |
+| Calm | Slow, flowing | 500-1000ms | Sine curves |
+| Surprise | Sudden, explosive | 150-300ms | Exponential |
+| Confidence | Direct, decisive | 200-400ms | Strong ease-out |
+
+### Pillar 2: Visual Narrative
+
+| Phase | Duration Share | Purpose |
+|-------|--------------|---------|
+| Setup | 20-30% | Establish context, prepare viewer |
+| Action | 30-40% | Primary motion, hero moment |
+| Resolution | 30-40% | Settle, breathe, confirm |
+
+Even a 200ms tooltip fade has implicit setup→action→resolution.
+
+### Pillar 3: Motion Craft
+- Easing curves match emotional intent
+- Duration proportional to element size and distance
+- Arcs for organic, straight for mechanical
+- Secondary motion (shadows, related elements)
+- Nothing starts and stops all at once
+
+## Three Motion Layers
+
+| Layer | Role | Amplitude |
+|-------|------|-----------|
+| Primary | Main action viewer follows | 100% |
+| Secondary | Supporting richness | 30-50% |
+| Ambient | Background life | 10-20% |
+
+- Secondary offset 50-100ms from primary, different easing
+- Ambient is continuous/slow, never demands attention
+- Primary-only animation feels flat; always add secondary + ambient
+
+## The 1/3 Screen Rule
+No motion travels >1/3 screen without intermediate keyframe. Break with direction changes, speed shifts, or arc adjustments.
+
+## The Attention Budget
+- One hero motion per scene moment
+- Max 2-3 elements in active motion simultaneously
+- Ambient doesn't count against budget
+- Stagger rather than synchronize