feat: implement city weather detail API routing, dashboard data models, and monitoring infrastructure

frontend/components/dashboard/monitoring/monitor-refresh-policy.ts

@@ -0,0 +1,11 @@
+export const MONITOR_CITY_DETAIL_DEPTH = "panel" as const;
+export const MONITOR_REFRESH_INTERVAL_MS = 60_000;
+
+export type MonitorRefreshTrigger = "initial" | "interval";
+
+export function getMonitorRefreshRequest(_trigger: MonitorRefreshTrigger) {
+  return {
+    depth: MONITOR_CITY_DETAIL_DEPTH,
+    force: true,
+  };
+}