Function update_guidelines_once 

pub async fn update_guidelines_once(
    sqlite: &SqliteStore,
    provider: &AnyProvider,
    token_counter: &TokenCounter,
    config: &CompressionGuidelinesConfig,
    cancel: &CancellationToken,
) -> Result<(), MemoryError>

Run a single guidelines update cycle.

Errors

Returns an error if database queries or the LLM call fail.