Function deleteKeyValueNamespace

deleteKeyValueNamespace(namespace): Promise<void>
Removes an entire namespace and all its key-value pairs.

Permanently deletes all data within the specified namespace. This is a destructive operation that cannot be undone. Use with extreme caution for critical data or production systems.
Parameters
- namespace: string
  Namespace to completely remove from storage
Returns Promise<void>
Throws
When deletion request fails or service is unavailable

Example: Clear All User Preferences
```
// Warning: This removes ALL user preferences permanently
await deleteKeyValueNamespace('user-preferences');
console.log('All user preferences cleared');

// Better: Clear specific preferences individually
await deleteKeyValue('user-preferences', 'theme-mode');
await deleteKeyValue('user-preferences', 'language');
```