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/format_test.go

@@ -0,0 +1,60 @@
+package tradesignal
+
+import (
+	"strings"
+	"testing"
+)
+
+func ptr(v float64) *float64 { return &v }
+
+func TestFormatOpenIncludesPeriodAfterSymbol(t *testing.T) {
+	out := Format(&Signal{
+		Symbol: "BTCUSDT", Side: "LONG", Action: "OPEN",
+		Quantity: ptr(0.01), Price: 64000.5, Leverage: 10,
+		Period: "1h", EventTime: "2026-06-23T01:30:00Z",
+	})
+	if !strings.Contains(out, "多单开仓") || !strings.Contains(out, "交易品种: BTC") {
+		t.Fatalf("%s", out)
+	}
+	idxSym := strings.Index(out, "交易品种: BTC")
+	idxPer := strings.Index(out, "周期: 1h")
+	idxPx := strings.Index(out, "开仓价格:")
+	if idxPer < 0 || idxPer < idxSym || idxPx < idxPer {
+		t.Fatalf("period placement:\n%s", out)
+	}
+}
+
+func TestFormatOmitsEmptyPeriod(t *testing.T) {
+	out := Format(&Signal{
+		Symbol: "BTCUSDT", Side: "LONG", Action: "OPEN",
+		Price: 1, EventTime: "2026-06-23T01:30:00Z",
+	})
+	if strings.Contains(out, "周期:") {
+		t.Fatalf("%s", out)
+	}
+}
+
+func TestFormatCloseLong(t *testing.T) {
+	pnl, bal := 941.0, 74744.90
+	out := Format(&Signal{
+		Symbol: "BTCUSDT", Side: "LONG", Action: "CLOSE",
+		Quantity: ptr(3), Price: 63175.76,
+		EventTime: "2026-07-07T05:52:14Z", PnL: &pnl, AccountBalance: &bal,
+	})
+	for _, want := range []string{"多单平仓", "平仓价格: 63175.76", "平仓盈亏: 941.00"} {
+		if !strings.Contains(out, want) {
+			t.Fatalf("missing %q in\n%s", want, out)
+		}
+	}
+}
+
+func TestFormatWithAvgPrice(t *testing.T) {
+	avg := 150.0
+	out := Format(&Signal{
+		Symbol: "BTCUSDT", Side: "LONG", Action: "ADD",
+		Quantity: ptr(1), Price: 200, EventTime: "2026-07-07T05:52:14Z",
+	}, FormatOptions{AvgPrice: &avg})
+	if !strings.Contains(out, "平均单价: 150.00") {
+		t.Fatalf("%s", out)
+	}
+}