v1.0.0

• Initial release.
• Implemented the core single-file class architecture.
• Added optimized mapping logic for high-performance transient value and expiration retrieval.
• Added human-readable expiration countdown formatting.
• Implemented individual deletion and checkbox-based bulk actions.
• Integrated security hardening via WP Nonce verification and capability checks.
• Fully tested and verified with WordPress 7.0.0 and PHP 8.3 environments.