v1.0.458

What's Changed

• ci: runner split (ARM pool + self-hosted M5 macOS) by @IstiN in #844
• chore: pin factory acc3ded (review/rework runs visible on PR) by @IstiN in #842
• ci: runner split final — pure-Dart ARM, flutter via arm64 git bootstrap (pending experiment), M5 macOS by @IstiN in #846
• chore: pin factory 54e86fd — mutexAmong (dev arms don't starve merge window) by @IstiN in #847
• ci: skip SM gate bridge on chore:pin PRs by @IstiN in #848
• fix: factory_ref skew (pin sed left acc3ded) by @IstiN in #851

Full Changelog: v1.0.457...v1.0.458