API Documentation

Summary

Complete API documentation for v1.0.0 release.

Requirements

• Document all public functions
• Document all public types
• Document all error types
• Usage examples for common tasks
• Integration guide
• Migration guide (if breaking changes)

Documentation Structure

• docs/API.md - Complete API reference
• docs/GUIDE.md - Usage guide
• docs/EXAMPLES.md - Code examples
• docs/RFC_COMPLIANCE.md - RFC compliance details

Acceptance Criteria

• All public APIs documented
• Examples are tested and work
• zig doc generation works