Function interpret_values 

pub fn interpret_values(
    values: &[Value],
    ctx: &BlobContext<'_>,
    interpreter: Option<&dyn BlobInterpreter>,
) -> Vec<(usize, Interpretation)>

Apply interpreter to every BLOB in values, returning (column_index, interpretation) for each blob the interpreter recognised. Non-blob values are skipped. interpreter == None yields an empty result — the default, unchanged behaviour, so this passthrough is non-breaking for every existing caller.