Create comprehensive SDK documentation with examples

[Smartdevs17]

Description

The SDK packages lack proper documentation, examples, and TypeDoc generation. Create comprehensive SDK docs with runnable examples.

Acceptance Criteria

• TypeDoc generation in CI for all SDK packages
• README with getting-started guide for each SDK
• Runnable examples for common use cases
• Migration guide from REST API to SDK
• Error handling documentation with code examples
• Auto-generated changelog linking to releases

Technical Scope

• packages/sdk/
• packages/types/
• .github/workflows/
• Edge: cross-referencing between packages, version-specific docs