feat: add portfolio snapshot read layer

trex_core/adapters/messaging/rabbitmq.py

@@ -32,6 +32,7 @@ from trex_core.adapters.messaging.topology import (
     EVENTS_DLQ_QUEUE,
     EVENTS_EXCHANGE,
     INTENT_REQ_QUEUE,
+    PAUSE_REQ_QUEUE,
     SNAPSHOT_REQ_QUEUE,
     STRATEGY_QUEUE_ARGS,
 )
@@ -136,6 +137,11 @@ class RabbitMQTransport:
             durable=True,
             arguments={"x-dead-letter-exchange": EVENTS_DLQ_EXCHANGE},
         )
+        ch.queue_declare(
+            PAUSE_REQ_QUEUE,
+            durable=True,
+            arguments={"x-dead-letter-exchange": EVENTS_DLQ_EXCHANGE},
+        )
 
     def declare_strategy_queue(self, queue: str, binding_pattern: str) -> None:
         """Per-strategy durable queue (REQ-023 AC-4) bound to events exchange."""

trex_core/adapters/messaging/topology.py

@@ -15,6 +15,7 @@ from __future__ import annotations
 #     durable for simplicity since the queue itself is shared) ---
 SNAPSHOT_REQ_QUEUE = "trex.snapshot.req"
 INTENT_REQ_QUEUE = "trex.intent.req"
+PAUSE_REQ_QUEUE = "trex.pause.req"      # BAT-008 / REQ-032 control RPC
 
 # --- Events ---
 EVENTS_EXCHANGE = "trex.events"            # topic, durable