feat(dashboard): time range filter for operational metrics (30d/90d/6m/1y/all)

frontend/src/api/operational-metrics.ts

@@ -85,8 +85,10 @@ export interface TeamMetrics {
 
 // ── API Functions ────────────────────────────────────────────────────
 
-export async function getOperationalMetrics(): Promise<OperationalMetrics> {
-  const { data } = await client.get<OperationalMetrics>("/metrics/operational");
+export async function getOperationalMetrics(since?: string): Promise<OperationalMetrics> {
+  const { data } = await client.get<OperationalMetrics>("/metrics/operational", {
+    params: since ? { since } : undefined,
+  });
   return data;
 }
 
@@ -99,7 +101,9 @@ export async function getOperationalTrend(
   return data;
 }
 
-export async function getMetricsByTeam(): Promise<TeamMetrics> {
-  const { data } = await client.get<TeamMetrics>("/metrics/operational/by-team");
+export async function getMetricsByTeam(since?: string): Promise<TeamMetrics> {
+  const { data } = await client.get<TeamMetrics>("/metrics/operational/by-team", {
+    params: since ? { since } : undefined,
+  });
   return data;
 }