Complete Agent OS documentation rebuild

- 18 pages with proper multi-page structure
- Correct PyPI package: agent-os-kernel
- Unique design with emerald/indigo color scheme
- All links working within the site

Pages created:
- Landing page with hero, stats, architecture diagram
- docs/quickstart.html - Getting started guide
- docs/api.html - Complete API reference
- docs/policies.html - Policy language reference
- modules/ - CMVK, EMK, IATP, AMB deep documentation
- integrations/ - LangChain, CrewAI, AutoGen guides
- use-cases/ - Healthcare, Finance, Education examples
- examples/ - Production demo index

Updated sitemap.xml with all 23 URLs

Author: imran-siddique