Stop rewriting the whole ACL on every proxy-mode switch: materialize one
file per routing shape (acl-<summary>.ini), keep acl-active.ini as a stable
symlink the contract points at, and skip unchanged writes via a digest
manifest. The contract carries only path/summary/sha256 — the agent checks
the link stays inside the runtime directory and never reads ACL bytes.
Agent switch now defaults to off (no server config on a fresh install) and
survives preferences reset, which also returns any held system proxy and
converges a still-running agent onto the factory runtime. See ADR-0011.
Qiu Yuzhou
8aedf8c42e