`SpawnSpec.reg_addrs`/`.bind_addrs` pinned the wire shape to
a 2-tuple, so a `tipc` addr (`('tipc', stype, inst, scope)`)
died at the child w/ `msgspec.ValidationError: Expected array
of length 2, got 4` -> `invalid SpawnSpec IPC msg`.
Point those fields at `UnwrappedAddress` (which `SpawnSpec`s
own TODO already asked for) and widen the alias.
XXX VARIADIC (`tuple[str|int, ...]`) rather than a union of
the two concrete shapes, bc `msgspec` refuses a union holding
more than one array-like type.
?TODO, the real fix is the full proto-key migration (contract
§1.1) after which this becomes a tagged union keyed off elem
0 and per-proto validation comes back.
Note the alias is declared TWICE — `.msg.types` re-declares it
to dodge a circular import (`._addr` -> `.ipc._tcp` -> `.msg`)
and *that* copy is what actually validates the wire msg.
(this patch was generated in some part by `claude-code` using `claude-opus-5` (`anthropic`))
Gud Boi
bedb3ea300