What's Changed

• Bug fixes, security hardening, and performance improvements by @lilith in #678
• feat: migrate cancellation check sites to Stop trait interface by @lilith in #679
• Fix all clippy warnings across workspace by @lilith in #680
• Migrate transpose.rs from raw SIMD to archmage (zero unsafe) by @lilith in #681
• refactor: remove trivial unsafe from graphics module by @lilith in #682
• refactor: remove and document remaining unsafe in imageflow_core by @lilith in #683
• feat: implement frame=N for single-frame GIF extraction by @lilith in #684

Full Changelog: v2.2.0-rc01...v2.3.0-rc01