Make the laptop and phone obey the same principal map: Souvie, Annie/Aster, and Vanguard are dedicated residents; Kitty, Gem, and Hal knowingly borrow Casey's UID. Their live posture is regenerated from actual credentials for every model request, outside memory, replay, and compaction.\n\nTake the lock boundary out of all of them. Casey authenticates, agents may request, and the dedicated souveraine-session principal holds the hostile pre-unlock edge with only Ambient and Revealable reach.
A SeedID says who she is; it cannot tell the kernel whose hands are on the files. Split logical identity, node commission, and the local Unix principal, then make creation and health prove all three.\n\nSouvie, Annie, and Vanguard get distinct node-local accounts. The existing souveraine user stays where it belongs: under the machine signer. The boundary has teeth only when each turn and its tools run in an agent-owned worker, so the shared-UID compatibility state is named acting-as-human instead of polished green.\n\nAdmission projects an operating skill from real capabilities. The prose teaches the reach; it never grants it.