goldenChat base source add

backend/src/main/java/com/goldenchart/auth/MenuIds.java

@@ -0,0 +1,14 @@
+package com.goldenchart.auth;
+
+import java.util.List;
+
+public final class MenuIds {
+
+    private MenuIds() {}
+
+    public static final List<String> ALL = List.of(
+            "dashboard", "chart", "paper", "strategy", "backtest", "notifications", "settings",
+            "settings_general", "settings_chart", "settings_indicators", "settings_backtest",
+            "settings_strategy", "settings_paper", "settings_alert", "settings_network", "settings_admin"
+    );
+}

backend/src/main/java/com/goldenchart/auth/UserRole.java

@@ -0,0 +1,16 @@
+package com.goldenchart.auth;
+
+public enum UserRole {
+    ADMIN,
+    USER,
+    GUEST;
+
+    public static UserRole fromString(String value) {
+        if (value == null || value.isBlank()) return USER;
+        try {
+            return UserRole.valueOf(value.trim().toUpperCase());
+        } catch (IllegalArgumentException e) {
+            return USER;
+        }
+    }
+}