feat: subscribe to RabbitMQ trade signals and notify by rules

Consume configurable queues, format signals (including period), share NotifyService with HTTP, and drop duplicate bodies within 1h.

config/config.yaml

@@ -33,3 +33,26 @@ logbull:
   project_id: "42a3fef0-2fd6-4ce4-80c5-f6bb6ecc2013"
   api_key: "lb_60701971723797ed0374aa3896078fe5"
   log_level: "INFO"
+
+# 多队列重复消息按 body SHA-256 去重；有 Redis 时跨进程共享
+subscription_dedup_ttl: 1h
+
+subscriptions:
+  - name: trade-signal
+    url: "${RABBITMQ_URL}"
+    queue: trade.signal.notify.queue
+    dead_letter_queue: trade.signal.notify.dlq
+    exchange: trade.signal.executor.queue
+    exchange_type: fanout
+    routing_key: ""
+    max_retry: 3
+    source: trade-signal
+    formatter: trade_signal
+    strategy_overrides:
+      BLONG:
+        quantity_multipliers:
+          open: 100
+          add: 100
+          reduce: 100
+          close: 100
+        leverage: 100