Release 4.3.0 - Full Feature Parity for All 42 SDKs Major release bringing all 42 language implementations to feature parity with the C reference implementation. New Features: - HTTP 428 Precondition Required handling for sudo OTP challenges - X-Sudo-OTP and X-Sudo-Challenge header support - Complete API coverage (58+ functions per SDK) API Coverage: - Execution (8): execute, execute_async, wait_job, get_job, cancel_job, list_jobs, get_languages, detect_language - Sessions (9): list, get, create, destroy, freeze, unfreeze, boost, unboost, execute - Services (17): full CRUD + env vault + resize - Snapshots (9): full CRUD + clone - Images (13): full CRUD + visibility + access control + transfer + spawn + clone - PaaS Logs (2): fetch, stream - Utilities (5): validate_keys, hmac_sign, health_check, version, last_error Testing: - Comprehensive unit tests (no network required) - Integration tests for SDK internals - Functional tests against live API