Only emit pps msg for trade triggering instrument

We can probably make this better (and with less file sys accesses) later
such that we keep a consistent pps state in mem and only write async
maybe from another side-task?

piker/brokers/ib/broker.py

@@ -71,7 +71,6 @@ from .api import (
     Client,
     MethodProxy,
 )
-# from .feed import open_data_client
 
 
 def pack_position(
@@ -285,7 +284,6 @@ async def recv_trade_updates(
 
 async def update_ledger_from_api_trades(
     trade_entries: list[dict[str, Any]],
-    ib_pp_msgs: dict[int, BrokerdPosition],  # conid -> msg
     client: Union[Client, MethodProxy],
 
 ) -> dict[str, Any]:
@@ -478,7 +476,6 @@ async def trades_dialogue(
             trades = await proxy.trades()
             await update_ledger_from_api_trades(
                 trades,
-                cids2pps,  # pass these in to map to correct fqsns..
                 proxy,
             )
 
@@ -542,24 +539,25 @@ async def emit_pp_update(
     proxy = proxies[acctid]
     await update_ledger_from_api_trades(
         [trade_entry],
-        cids2pps,  # pass these in to map to correct fqsns..
         proxy,
     )
     # load all positions from `pps.toml`, cross check with
     # ib's positions data, and relay re-formatted pps as
     # msgs to the ems.
-    for acctid, by_fqsn in pp.get_pps(
-        'ib',
-        acctids={acctid},
-    ).items():
+    by_acct = pp.get_pps('ib', acctids={acctid})
+    by_fqsn = by_acct[acctid.strip('ib.')]
 
+    for fqsn, p in by_fqsn.items():
+        if p.bsuid == trade_entry['contract']['conId']:
             # should only be one right?
             msgs = await update_and_audit(
-            by_fqsn,
+                {fqsn: p},
                 cids2pps,
                 validate=False,
             )
-        for msg in msgs:
+            msg = msgs[0]
+            break
+
     await ems_stream.send(msg.dict())
 
 
@@ -714,7 +712,6 @@ async def deliver_trade_events(
 
                 if comms or cost_already_rx:
                     # only send a pp update once we have a cost report
-                    print("EMITTING PP")
                     await emit_pp_update(
                         ems_stream,
                         trade_entry,
@@ -739,7 +736,6 @@ async def deliver_trade_events(
                 )
 
                 if fill_already_rx:
-                    print("EMITTING PP")
                     await emit_pp_update(
                         ems_stream,
                         trade_entry,