Clean up `TooFastEdit` remnants and ws-token flow

Drop all commented-out `TooFastEdit` class,
`reg_err_types`, and `isinstance()` references.
Replace the hard ws-token `assert` in
`subscribe()` with a soft mismatch log that
updates the local `token` ref; cache the result
as `latest_token` for use in sub msgs.

Also,
- Comment out the `reg_err_types` import.
- Switch `pformat` -> `ppfmt` in `openOrders` update log.

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

piker/brokers/kraken/broker.py

@@ -38,7 +38,7 @@ from bidict import bidict
 import trio
 import tractor
 from tractor.devx.pformat import ppfmt
-from tractor._exceptions import reg_err_types
+# from tractor._exceptions import reg_err_types
 
 from piker.accounting import (
     Position,
@@ -97,13 +97,6 @@ MsgUnion = Union[
 ]
 
 
-# class TooFastEdit(Exception):
-#     'Edit requests faster then api submissions'
-
-
-# reg_err_types([TooFastEdit])
-
-
 # TODO: make this wrap the `api.Client` and `ws` instances
 # and give it methods to submit cancel vs. add vs. edit
 # requests?
@@ -166,7 +159,6 @@ async def handle_order_requests(
                     #   triggered-submitted and then we have inavlid
                     #   value in `reqids2txids` sent over ws.send()??
                     log.error('TOO FAST CANCEL/EDIT')
-                    # reqids2txids[reqid] = TooFastEdit(reqid)
                     toofastedit.add(reqid)
                     reqids2txids[reqid] = reqid
                     await ems_order_stream.send(
@@ -206,7 +198,6 @@ async def handle_order_requests(
 
                         # XXX: not sure if this block ever gets hit now?
                         log.error('TOO FAST EDIT')
-                        # reqids2txids[reqid] = TooFastEdit(reqid)
                         reqids2txids[reqid] = reqid
                         toofastedit.add(reqid)
                         await tractor.pause()
@@ -338,11 +329,19 @@ async def subscribe(
     '''
     # more specific logic for this in kraken's sync client:
     # https://github.com/krakenfx/kraken-wsclient-py/blob/master/kraken_wsclient_py/kraken_wsclient_py.py#L188
-    assert (
+    latest_token: str = await client.get_ws_token()
+    if (
         token
-        and
-        token == await client.get_ws_token()
-    )
+        !=
+        latest_token
+    ):
+        log.info(
+            f'RE-subscribing to WS connection..\n'
+            f'orig-token: {token!r}\n'
+            f'latest-token: {latest_token!r}\n'
+        )
+        token = latest_token
+
     subnames: set[str] = set()
 
     for name, sub_opts in subs:
@@ -350,7 +349,8 @@ async def subscribe(
             'event': 'subscribe',
             'subscription': {
                 'name': name,
-                'token': await client.get_ws_token(),
+                # 'token': await client.get_ws_token(),
+                'token': latest_token,
                 **sub_opts,
             }
         }
@@ -698,7 +698,7 @@ async def open_trade_dialog(
                     handle_order_requests,
                     ws=ws,
                     client=client,
-                    ems_stream=ems_stream,
+                    ems_order_stream=ems_stream,
                     apiflows=apiflows,
                     ids=ids,
                     reqids2txids=reqids2txids,
@@ -868,7 +868,7 @@ async def handle_order_updates(
                 for order_msg in order_msgs:
                     log.info(
                         f'`openOrders` msg update_{seq}:\n'
-                        f'{pformat(order_msg)}'
+                        f'{ppfmt(order_msg)}'
                     )
                     txid, update_msg = list(order_msg.items())[0]
 
@@ -1040,10 +1040,6 @@ async def handle_order_updates(
                                 status == 'open'
                                 and
                                 reqid in toofastedit
-                                # isinstance(
-                                #     reqids2txids.get(reqid),
-                                #     TooFastEdit
-                                # )
                             ):
                                 # TODO: don't even allow this case
                                 # by not moving the client side line
@@ -1207,7 +1203,6 @@ async def handle_order_updates(
                         # we throttle too-fast-requests on the ems side
                         and
                         reqid in toofastedit
-                        # not isinstance(txid, TooFastEdit)
                     ):
                         # client was editting too quickly
                         # so we instead cancel this order