Function run_instability 

pub fn run_instability(
    db: &FactsDb,
    opts: &Options,
) -> Result<Vec<InstabilityRow>>

Run the instability analysis. Returns one row per file in the import graph, ranked by afferent coupling (most depended-upon first), where instability is most consequential.

Errors

Returns crate::CodeLoreError::Analysis on DuckDB query errors (propagated from the import-graph build).