Function optimize_kernel_with_config 

pub fn optimize_kernel_with_config(
    ast: Arc<UOp>,
    renderer: &Renderer,
    config: &OptimizerConfig,
) -> Arc<UOp>

Apply optimizations with explicit configuration.

Use this when you need explicit control over the optimization settings.

Note: For beam search strategy, this falls back to heuristics because beam search requires a compile_and_time function from the runtime. Use optimize_kernel_beam() for actual beam search optimization.