Launch slirp4netns on 10.137.54.0/24, update its gateway and DNS routes, and refuse configured allows or specific denies that collide with the enclosing Lazaret /23 while preserving broad RFC 1918 denial.
Resolve and verify canonical caller subordinate ranges, launch preparation and runtime workers through mapped causal acquisition, and keep runsc in the existing user namespace. Repair descriptor-relative OCI cleanup and absent-mount recovery so failed launches can progress to the corrected path.
