Refine type annots in `_discovery` and `_runtime`

- Add `LocalPortal` union to `query_actor()` return
  type and `reg_portal` var annotation since the
  registrar yields a `LocalPortal` instance.
- Update docstring to note the `LocalPortal` case.
- Widen `.delete_addr()` `addr` param to accept
  `list[str|int]` bc msgpack deserializes tuples as
  lists over IPC.
- Tighten `uid` annotation to `tuple[str, str]|None`.

(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code

tractor/_discovery.py

@@ -153,7 +153,7 @@ async def query_actor(
     regaddr: UnwrappedAddress|None = None,
 
 ) -> AsyncGenerator[
-    tuple[UnwrappedAddress|None, Portal|None],
+    tuple[UnwrappedAddress|None, Portal|LocalPortal|None],
     None,
 ]:
     '''
@@ -163,8 +163,9 @@ async def query_actor(
     Yields a `tuple` of `(addr, reg_portal)` where,
     - `addr` is the transport protocol (socket) address or `None` if
       no entry under that name exists,
-    - `reg_portal` is the `Portal` to the registrar used for the
-      lookup (or `None` when the peer was found locally via
+    - `reg_portal` is the `Portal` (or `LocalPortal` when the
+      current actor is the registrar) used for the lookup (or
+      `None` when the peer was found locally via
       `get_peer_by_name()`).
 
     '''
@@ -183,7 +184,7 @@ async def query_actor(
         yield maybe_peers[0].raddr, None
         return
 
-    reg_portal: Portal
+    reg_portal: Portal|LocalPortal
     regaddr: Address = wrap_address(regaddr) or actor.reg_addrs[0]
     async with get_registry(regaddr) as reg_portal:
         # TODO: return portals to all available actors - for now

tractor/_runtime.py

@@ -2042,12 +2042,12 @@ class Arbiter(Actor):
 
     async def delete_addr(
         self,
-        addr: tuple[str, int|str],
+        addr: tuple[str, int|str]|list[str|int],
     ) -> tuple[str, str]|None:
         # NOTE: `addr` arrives as a `list` over IPC
         # (msgpack deserializes tuples -> lists) so
         # coerce to `tuple` for the bidict hash lookup.
-        uid: tuple | None = self._registry.inverse.pop(
+        uid: tuple[str, str]|None = self._registry.inverse.pop(
             tuple(addr),
             None,
         )