Function screen_dispatch 

pub fn screen_dispatch(
    store: &Mutex<ScreenStore>,
    seed: &Seed,
    cfg: &ScreenConfig,
    selection: Option<&Selection>,
    element_id: Option<&str>,
    refresh: bool,
) -> String

One-call entry point for the screen_stargazers MCP tool. Without element_id: build (or reuse) the screen and return the overview — re-classified against the current keywords/stack so the agent can re-key a cached fetch for free. With element_id: drill the cached set.