refactor: move gateway and vault packages to internal directory

internal/gateway/routes.go

@@ -0,0 +1,32 @@
+// Package gateway provides the default routes for the Sonr hway.
+package gateway
+
+import (
+	"github.com/labstack/echo/v4"
+	"github.com/onsonr/sonr/internal/gateway/config"
+	"github.com/onsonr/sonr/internal/gateway/database"
+	"github.com/onsonr/sonr/internal/gateway/handlers"
+	"github.com/onsonr/sonr/internal/gateway/session"
+	"github.com/onsonr/sonr/pkg/common/response"
+)
+
+func RegisterRoutes(e *echo.Echo, env config.Env) error {
+	// Custom error handler for gateway
+	e.HTTPErrorHandler = response.RedirectOnError("http://localhost:3000")
+
+	// Initialize database
+	db, err := database.InitDB(env)
+	if err != nil {
+		return err
+	}
+
+	// Inject session middleware with database connection
+	e.Use(session.Middleware(db, env))
+
+	// Register routes
+	e.GET("/", handlers.HandleIndex)
+	e.GET("/register", handlers.HandleRegisterView)
+	e.POST("/register/start", handlers.HandleRegisterStart)
+	e.POST("/register/finish", handlers.HandleRegisterFinish)
+	return nil
+}