Update to latest `KucoinMktPair` spec

piker/brokers/kucoin.py

@@ -62,7 +62,7 @@ from piker._cacheables import (
 )
 from piker.log import get_logger
 from piker.data.validate import FeedInit
-from piker.types import Struct
+from piker.types import Struct  # NOTE, this is already a `tractor.msg.Struct`
 from piker.data import (
     def_iohlcv_fields,
     match_from_pairs,
@@ -98,9 +98,18 @@ class KucoinMktPair(Struct, frozen=True):
     def size_tick(self) -> Decimal:
         return Decimal(str(self.quoteMinSize))
 
+    callauctionFirstStageStartTime: None|float
+    callauctionIsEnabled: bool
+    callauctionPriceCeiling: float|None
+    callauctionPriceFloor: float|None
+    callauctionSecondStageStartTime: float|None
+    callauctionThirdStageStartTime: float|None
+
     enableTrading: bool
+    feeCategory: int
     feeCurrency: str
     isMarginEnabled: bool
+    makerFeeCoefficient: float
     market: str
     minFunds: float
     name: str
@@ -110,11 +119,10 @@ class KucoinMktPair(Struct, frozen=True):
     quoteIncrement: float
     quoteMaxSize: float
     quoteMinSize: float
-    symbol: str  # our bs_mktid, kucoin's internal id
-    feeCategory: int
-    makerFeeCoefficient: float
-    takerFeeCoefficient: float
     st: bool
+    symbol: str  # our bs_mktid, kucoin's internal id
+    takerFeeCoefficient: float
+    tradingStartTime: float|None
 
 
 class AccountTrade(Struct, frozen=True):
@@ -396,7 +404,13 @@ class Client:
         pairs: dict[str, KucoinMktPair] = {}
         fqmes2mktids: bidict[str, str] = bidict()
         for item in entries:
-            pair = pairs[item['name']] = KucoinMktPair(**item)
+            try:
+                pair = pairs[item['name']] = KucoinMktPair(**item)
+            except TypeError as te:
+                raise TypeError(
+                    '`KucoinMktPair` and reponse fields do not match ??\n'
+                    f'{KucoinMktPair.fields_diff(item)}\n'
+                ) from te
             fqmes2mktids[
                 item['name'].lower().replace('-', '')
             ] = pair.name