Documentation: Add implementation examples

[copyleftdev]

Description

Create example implementations to help builders get started.

Tasks

• Add Python example implementation
• Add Rust example implementation
• Create Jupyter notebook tutorial
• Add API usage examples (curl, Python, JS)
• Document common pitfalls
• Add troubleshooting guide

Documentation

• See docs/08-faq.md for common questions
• See docs/07-validation-testing.md for test scenarios

Acceptance Criteria

• Examples are runnable
• Cover common use cases
• Well-documented