feat: improve operations diagnostics and channel management

src/utils/successRate.ts

@@ -0,0 +1,17 @@
+export type SuccessRateTone = 'red' | 'orange' | 'yellow' | 'blue' | 'green' | 'deep-green';
+
+export function successRateTone(value: number): SuccessRateTone {
+  const rate = Number.isFinite(value) ? value : 0;
+
+  // Keep decimal percentages in one continuous band at the agreed boundaries.
+  if (rate <= 0) return 'red';
+  if (rate <= 25) return 'orange';
+  if (rate <= 50) return 'yellow';
+  if (rate <= 75) return 'blue';
+  if (rate < 96) return 'green';
+  return 'deep-green';
+}
+
+export function successRateClassName(value: number) {
+  return `success-rate-text success-rate-text--${successRateTone(value)}`;
+}