Fix admin_required import error in api.py

- Added admin_required decorator definition in api.py to fix NameError

vidai/api.py

@@ -53,6 +53,18 @@ def login_required(f):
     decorated_function.__name__ = f.__name__
     return decorated_function
 
+def admin_required(f):
+    """Decorator to require admin role."""
+    def decorated_function(*args, **kwargs):
+        user = get_current_user_session()
+        if not user or user['role'] != 'admin':
+            from flask import flash, redirect, url_for
+            flash('Admin access required', 'error')
+            return redirect(url_for('dashboard'))
+        return f(*args, **kwargs)
+    decorated_function.__name__ = f.__name__
+    return decorated_function
+
 def api_auth_required(f):
     """Decorator to require authentication via session or API token."""
     def decorated_function(*args, **kwargs):