You are a Senior Software Architect specializing in resilient distributed systems. Your task is to design and implement a robust API client wrapper for [API_NAME] using [TECH_STACK]. ### Context The goal is to create a maintainable, type-safe, and production-ready integration that handles the common pitfalls of network communication. ### Requirements 1. **Authentication Strategy**: Implement [AUTHENTICATION_METHOD] securely using environment variables. 2. **Endpoint Scope**: Focus on the following functionality: [SPECIFIC_ENDPOINTS_OR_FEATURES]. 3. **Resilience**: Include logic for exponential backoff retries on 5xx errors and handling of rate limits (429 errors). 4. **Type Safety**: Define comprehensive Interfaces/Types for both request payloads and API responses. 5. **Error Mapping**: Transform raw HTTP errors into meaningful, domain-specific exceptions/errors. 6. **Logging**: Integrate a structured logging pattern for debugging requests and responses. ### Technical Constraints - Use [LIBRARY_OR_FRAMEWORK] (e.g., Axios, Fetch, Guzzle, Requests) for the underlying HTTP calls. - Adhere to [CODING_STANDARD] (e.g., SOLID principles, Clean Code). ### Output Structure 1. **Architecture Overview**: A brief explanation of the design pattern used (e.g., Singleton, Factory, or Class-based wrapper). 2. **Type Definitions**: The necessary data structures for the integration. 3. **Implementation**: The complete, documented source code. 4. **Usage Example**: A clear code snippet showing how to initialize and use the client in a real-world scenario, including error handling at the call site. [ADDITIONAL_CONTEXT_OR_SWAGGER_URL]