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## Why An inherited write ACE from a writable parent directory could leave sandbox runner files in `.sandbox-bin` writable or deletable by the workspace capability SID. ## What changed - Mark the `.sandbox-bin` DACL as protected when applying its explicit ACL, while preserving inherited DACL behavior for the other persistent sandbox directories. - Cover both full and provision-only setup, including runner files created before and after the directory is locked. GitOrigin-RevId: fcda4df97e3f8d729438ccb3d42daa606076e0c4