v0.1.0

feat: initial commit — SlideCraft dual-format presentation skill

- 12 curated visual themes (dark, light, specialty)
- HTML output: zero-dependency, animation-rich, browser-based
- PPTX output: PowerPoint-compatible, fully editable
- Multi-language support (CJK, RTL)
- Accessible: semantic HTML, ARIA labels, prefers-reduced-motion
- Anti-AI-slop design philosophy

Change-Id: I7505b6e0f963b97ac348ed8f88c6ceb1f71b5011
Co-authored-by: Genius <genius@ai-assistant>