docs: Add comprehensive meta-orchestration tutorial

- Complete beginner to advanced guide (5,000+ words)
- Explains the paradigm shift from static to dynamic workflows
- Hands-on examples for both CLI and Python API
- Covers all 6 composition patterns with use cases
- Shows how to build custom workflows
- Explains the learning loop and configuration store
- Advanced techniques: hybrid strategies, custom templates
- Troubleshooting section with common issues

Perfect companion to the v4.0.0 release for user onboarding.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: 2 people