Swap `open_channel_from()` yield-pair order

Match upstream `tractor` API change where
`open_channel_from()` now yields `(chan, first)`
instead of `(first, chan)` — i.e.
`tuple[LinkedTaskChannel, Any]`.

- `brokers/ib/api.py`
- `brokers/ib/broker.py`
- `brokers/ib/feed.py`
- `brokers/deribit/api.py` (2 sites)

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

piker/brokers/deribit/api.py

@@ -586,7 +586,7 @@ async def open_price_feed(
                 fh,
                 instrument
             )
-        ) as (first, chan):
+        ) as (chan, first):
             yield chan
 
 
@@ -653,7 +653,7 @@ async def open_order_feed(
                 fh,
                 instrument
             )
-        ) as (first, chan):
+        ) as (chan, first):
             yield chan
 
 

piker/brokers/ib/api.py

@@ -1529,7 +1529,7 @@ async def open_client_proxies() -> tuple[
             # TODO: maybe this should be the default in tractor?
             key=tractor.current_actor().uid,
 
-        ) as (cache_hit, (clients, _)),
+        ) as (cache_hit, (_, clients)),
 
         AsyncExitStack() as stack
     ):
@@ -1718,7 +1718,7 @@ async def open_client_proxy(
             open_aio_client_method_relay,
             client=client,
             event_consumers=event_table,
-        ) as (first, chan),
+        ) as (chan, first),
 
         trionics.collapse_eg(),  # loose-ify
         trio.open_nursery() as relay_tn,

piker/brokers/ib/broker.py

@@ -514,8 +514,8 @@ async def open_trade_event_stream(
         recv_trade_updates,
         client=client,
     ) as (
-        _,  # first pushed val
         trade_event_stream,
+        _,  # first pushed val
     ):
         task_status.started(trade_event_stream)
         # block forever to keep session trio-asyncio session

piker/brokers/ib/feed.py

@@ -989,7 +989,7 @@ async def open_aio_quote_stream(
         symbol=symbol,
         contract=contract,
 
-    ) as (contract, from_aio):
+    ) as (from_aio, contract):
 
         assert contract