aiConfig abstract method
Writes AI settings to ~/.omnyshell/ai.yaml. A non-null empty string
clears that field back to its default; null leaves it untouched.
Implementation
Future<void> aiConfig({
AiProviderKind? provider,
String? model,
String? plannerModel,
String? executorModel,
String? explainerModel,
String? apiKey,
AgentMode? mode,
String? language,
String? baseUrl,
int? maxSteps,
});