CUB-203: add WebSocket client scaffold for OpenClaw gateway v3

go-backend/internal/config/config.go

@@ -10,13 +10,15 @@ import (
 
 // Config holds all application configuration.
 type Config struct {
-	Port              int
-	DatabaseURL       string
-	CORSOrigin        string
-	LogLevel          string
-	Environment       string
-	GatewayURL        string
+	Port                int
+	DatabaseURL         string
+	CORSOrigin          string
+	LogLevel            string
+	Environment         string
+	GatewayURL          string
 	GatewayPollInterval time.Duration
+	WSGatewayURL        string
+	WSGatewayToken      string
 }
 
 // Load reads configuration from environment variables, applying defaults where
@@ -30,6 +32,8 @@ func Load() *Config {
 		Environment:         getEnv("ENVIRONMENT", "development"),
 		GatewayURL:          getEnv("GATEWAY_URL", "http://localhost:18789/api/agents"),
 		GatewayPollInterval: getEnvDuration("GATEWAY_POLL_INTERVAL", 5*time.Second),
+		WSGatewayURL:        getEnv("WS_GATEWAY_URL", "ws://localhost:18789/"),
+		WSGatewayToken:      getEnv("OPENCLAW_GATEWAY_TOKEN", ""),
 	}
 }