Function createLlmService

createLlmService(config: Readonly<PramanConfig>): LlmService
Create an LlmService from the Praman configuration.
Parameters
- config: Readonly<PramanConfig>
  Validated Praman configuration (Readonly)
Returns LlmService
Remarks
Reads config.ai.provider to select the provider. Throws AIError with code: 'ERR_AI_NOT_CONFIGURED' when config.ai is absent.

Provider packages are loaded lazily on first call to complete() or chat(). An AIError with code: 'ERR_AI_NOT_CONFIGURED' is also thrown if the package is not installed.

Throws
AIError when config.ai is undefined
Example
```
const llm = createLlmService(pramanConfig);
const result = await llm.complete('Generate test steps', StepsSchema);
```
- Defined in ai/llm-service.ts:115