Function run_review_loop 

pub async fn run_review_loop(
    llm: Arc<dyn LLMProviderTrait>,
    config: Config,
    ravenfabric: Option<RavenFabricClient>,
    pattern_config: PatternConfig,
) -> Result<()>

Run a producer-reviewer loop that iterates until quality is met.

A producer agent creates content, a reviewer agent critiques it, and the producer revises based on feedback. Repeats until the reviewer approves or max iterations reached.