Function compute_blast_radius_scoped 

pub fn compute_blast_radius_scoped(
    conn: &Connection,
    seed_symbols: &[&str],
    symbol_path_filter: Option<&str>,
    seed_paths: &[&str],
    max_depth: usize,
    limit: usize,
) -> Result<BlastRadiusResult, QueryError>

Compute blast radius and likely tests for given seed symbols or seed file paths. Recursively walks reverse reachability (transitive callers) up to max_depth in SQLite.