wip feat: add redis-based queue

src/aare/queue/models.py

@@ -87,8 +87,7 @@ def parse_queue_item(raw: str | bytes) -> AareQueueItem:
         ValueError: the entry is not valid JSON, carries no usable id/kind, or
             is a malformed instance of a kind we do recognise -- all corrupt
             rather than merely unrecognised.
-        TypeError: the entry is valid JSON but not an object, so there is no
-            payload a forward-compatible reader could preserve.
+        TypeError: the entry is valid JSON but not an object
     """
     try:
         return _KNOWN_ADAPTER.validate_json(raw)

tests/unit/queue/test_queue_client.py

@@ -21,9 +21,6 @@ BEAMLINE = MXBeamline.X10SA
 QUEUE_KEY = str(BEAMLINE) + QUEUE_KEY_SUFFIX
 NOTIFY_CHANNEL = str(BEAMLINE) + QUEUE_NOTIFICATION_CHANNEL_SUFFIX
 
-# Callbacks run on the client's dispatch thread, so tests wait on an Event
-# rather than sleeping. Generous enough for a loaded CI box, but only ever
-# paid in full when something is actually broken.
 DISPATCH_TIMEOUT_S = 2.0
 # Waiting for something NOT to happen has to be a real sleep; keep it short.
 QUIET_PERIOD_S = 0.3