TestGenerationRunner

Main entry point for test generation execution.

Encapsulates the common execution flow shared between CLI and Gradle plugin:

1. Create execution options by merging config and overrides

2. Extract module settings (e.g., pattern generation options)

3. Create modules with extracted settings

4. Generate test report via TestGenerationEngine

5. Write test artifacts if successful or alwaysWriteTests is enabled

Use Builder for custom configuration or withDefaults for standard distribution setup.