Add initial wrangler configuration for livedash-node project

- Created wrangler.json with project metadata and settings
- Configured D1 database binding for database interaction
- Enabled observability for monitoring
- Added placeholders for smart placement, environment variables, static assets, and service bindings

app/dashboard/overview/page.tsx

@@ -17,6 +17,11 @@ import GeographicMap from "../../../components/GeographicMap";
 import ResponseTimeDistribution from "../../../components/ResponseTimeDistribution";
 import WelcomeBanner from "../../../components/WelcomeBanner";
 
+interface MetricsApiResponse {
+    metrics: MetricsResult;
+    company: Company;
+}
+
 // Safely wrapped component with useSession
 function DashboardContent() {
   const { data: session, status } = useSession(); // Add status from useSession
@@ -40,7 +45,7 @@ function DashboardContent() {
       const fetchData = async () => {
         setLoading(true);
         const res = await fetch("/api/dashboard/metrics");
-        const data = await res.json();
+          const data = (await res.json()) as MetricsApiResponse;
         console.log("Metrics from API:", {
           avgSessionLength: data.metrics.avgSessionLength,
           avgSessionTimeTrend: data.metrics.avgSessionTimeTrend,
@@ -76,10 +81,10 @@ function DashboardContent() {
       if (res.ok) {
         // Refetch metrics
         const metricsRes = await fetch("/api/dashboard/metrics");
-        const data = await metricsRes.json();
+          const data = (await metricsRes.json()) as MetricsApiResponse;
         setMetrics(data.metrics);
       } else {
-        const errorData = await res.json();
+          const errorData = (await res.json()) as { error: string; };
         alert(`Failed to refresh sessions: ${errorData.error}`);
       }
     } finally {