Skip benchmarks with negligible baseline

src/utils/tester.rs

@@ -95,6 +95,18 @@ pub fn run_benchmarks(update: bool) -> Vec<BenchmarkResult> {
             } else if let Some(m) = baseline_match {
                 let baseline_str = m.get(1).unwrap().as_str();
                 let baseline = parse_duration(baseline_str).unwrap();
+
+                if baseline < Duration::from_micros(1) {
+                    results.push(BenchmarkResult {
+                        name,
+                        median,
+                        baseline: Some(baseline),
+                        diff_pct: None,
+                        status: "SKIPPED".to_string(),
+                    });
+                    continue;
+                }
+
                 let diff = (median.as_nanos() as f64 / baseline.as_nanos() as f64) - 1.0;
                 
                 let threshold = if is_release { 0.10 } else { 0.25 };