operator's call: probing-forward + state-file machinery is more
brittle than the bug it tried to fix. revert to the original
deterministic FNV-1a hash mod 900. collisions are real but rare;
operator resolves by renaming (different name → different hash) and
rebuilding. no per-agent port file, no scan, no migration path,
nothing to drift out of sync with the running container.
existing port files on disk are silently ignored — operator
rebuilds affected agents to regenerate flakes from the deterministic
hash.
acaa0eb895