Fix superadmin access control and modal aria-hidden warning

- Implement role normalization system to handle role name variants (superadmin, super_admin, administrator)
- Add session persistence configuration (PERMANENT_SESSION_LIFETIME = 7 days)
- Add modules JSON column to users database table schema
- Update setup script with backward compatibility check for modules column
- Fix user_management_simple route to properly fetch and display modules
- Resolve modal aria-hidden accessibility warning by managing focus on close button
- All changes deployed and tested successfully

py_app/app/db_create_scripts/setup_complete_database.py

@@ -383,12 +383,21 @@ def create_users_table_mariadb():
             username VARCHAR(100) UNIQUE NOT NULL,
             password VARCHAR(255) NOT NULL,
             role VARCHAR(50) NOT NULL,
+            modules JSON DEFAULT NULL,
             created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
         );
         """
         cursor.execute(users_table_query)
         print_success("Table 'users' created successfully")
         
+        # Ensure modules column exists (for backward compatibility with existing tables)
+        try:
+            cursor.execute("SELECT modules FROM users LIMIT 1")
+        except mariadb.ProgrammingError:
+            # Column doesn't exist, add it
+            cursor.execute("ALTER TABLE users ADD COLUMN modules JSON DEFAULT NULL")
+            print_success("Added 'modules' column to existing 'users' table")
+        
         # Create roles table in MariaDB
         roles_table_query = """
         CREATE TABLE IF NOT EXISTS roles (