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.

internal/subscriber/tradesignal/convert_test.go

@@ -0,0 +1,51 @@
+package tradesignal
+
+import (
+	"errors"
+	"strings"
+	"testing"
+
+	"aiaa-notification-service/internal/config"
+)
+
+func TestConvertOpen(t *testing.T) {
+	lev := 100
+	c := NewConverter(map[string]config.StrategyOverride{
+		"BLONG": {QuantityMultipliers: config.QuantityMultipliers{Open: 100}, Leverage: &lev},
+	})
+	event, data, err := c.Convert([]byte(`{
+		"signalId":"s1","strategyCode":"BLONG","symbol":"BTCUSDT",
+		"side":"LONG","action":"OPEN","quantity":0.01,"price":64000,
+		"leverage":10,"period":"1h","eventTime":"2026-06-23T01:30:00Z"
+	}`))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if event != "trade.open" {
+		t.Fatalf("event=%q", event)
+	}
+	formatted, _ := data["formatted"].(string)
+	if !strings.Contains(formatted, "周期: 1h") || !strings.Contains(formatted, "开仓数量: 1.00") {
+		t.Fatalf("formatted=\n%s", formatted)
+	}
+	if data["period"] != "1h" || data["strategyCode"] != "BLONG" {
+		t.Fatalf("data=%v", data)
+	}
+	if data["leverage"] != float64(100) && data["leverage"] != 100 {
+		t.Fatalf("leverage=%v", data["leverage"])
+	}
+}
+
+func TestConvertInvalidJSON(t *testing.T) {
+	_, _, err := NewConverter(nil).Convert([]byte(`{`))
+	if !errors.Is(err, ErrInvalidSignal) {
+		t.Fatalf("err=%v", err)
+	}
+}
+
+func TestConvertMissingAction(t *testing.T) {
+	_, _, err := NewConverter(nil).Convert([]byte(`{"symbol":"BTCUSDT"}`))
+	if !errors.Is(err, ErrInvalidSignal) {
+		t.Fatalf("err=%v", err)
+	}
+}