Function createOrchestratorFactory

Orchestration exports - Factory, graph workflows, and spec-driven execution Split from index.ts for file size compliance (Issue #285)

createOrchestratorFactory(
config?: OrchestratorFactoryConfig,
): Promise<IOrchestratorFactory>
Creates an OrchestratorFactory with async initialization.

This is the recommended way to create an OrchestratorFactory as it properly initializes all async dependencies like the WorkflowEngine.
Parameters
- Optionalconfig: OrchestratorFactoryConfig
  Factory configuration
Returns Promise<IOrchestratorFactory>
Promise resolving to initialized OrchestratorFactory
Example
```
const factory = await createOrchestratorFactory();
const types = factory.listTypes(); // ['workflow']

const orchestrator = factory.create('workflow');
const result = await orchestrator.execute(...);
```
- Defined in packages/nexus-agents/src/orchestration/orchestrator-factory.ts:375