Add full monorepo: virtual-banker, backend, frontend, docs, scripts, deployment

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/api/gateway/cmd/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"log"
+	"os"
+	"strconv"
+
+	"github.com/explorer/backend/api/gateway"
+)
+
+func main() {
+	apiURL := os.Getenv("API_URL")
+	if apiURL == "" {
+		apiURL = "http://localhost:8080"
+	}
+
+	gw, err := gateway.NewGateway(apiURL)
+	if err != nil {
+		log.Fatalf("Failed to create gateway: %v", err)
+	}
+
+	port := 8081
+	if envPort := os.Getenv("GATEWAY_PORT"); envPort != "" {
+		if p, err := strconv.Atoi(envPort); err == nil {
+			port = p
+		}
+	}
+
+	if err := gw.Start(port); err != nil {
+		log.Fatalf("Failed to start gateway: %v", err)
+	}
+}