Replace standalone message assertions with a helper that checks the returned akerr status first, then validates message content only as secondary context. Drop ambiguous memcpy message checks where both NULL guards use the same format string.
Cover deterministic TODO 1.1 memory-wrapper behavior with a new CTest target. Exercise malloc/free round trips, NULL argument handling, memset fill/no-op semantics, and memcpy copy/no-op/null-pointer paths.
Harden AKSL_CHECK_OK so success requires no returned error context, catching wrappers that accidentally raise status-0 errors from stale errno.
Co-authored-by: Codex GPT-5.5 Default <codex-gpt-5.5-default@openai.com>
