Added enriched metrics (#2432)

src/Metrics/Constants.ts

@@ -7,10 +7,39 @@ export enum MetricScenario {
   DatabaseLoad = "DatabaseLoad",
 }
 
+export interface WebVitals {
+  lcp?: number; // Largest Contentful Paint
+  inp?: number; // Interaction to Next Paint
+  cls?: number; // Cumulative Layout Shift
+  fcp?: number; // First Contentful Paint
+  ttfb?: number; // Time to First Byte
+}
+
+export interface PhaseTimings {
+  endTimeISO: string; // When the phase completed
+  durationMs: number; // Duration from scenario start to phase completion
+}
+
 // Generic metric emission event describing scenario outcome.
 export interface MetricEvent {
+  // === Existing required fields (unchanged) ===
   readonly platform: Platform;
   readonly api: ApiType;
   readonly scenario: MetricScenario;
   readonly healthy: boolean;
+
+  // === New optional fields ===
+  readonly durationMs?: number;
+  readonly timedOut?: boolean;
+  readonly documentHidden?: boolean;
+  readonly hasExpectedFailure?: boolean;
+
+  readonly completedPhases?: string[];
+  readonly failedPhases?: string[];
+  readonly phaseTimings?: Record<string, PhaseTimings>;
+
+  readonly startTimeISO?: string;
+  readonly endTimeISO?: string;
+
+  readonly vitals?: WebVitals;
 }