feat: add request logging functionality and usage metrics display

src/app/api/usage/logs/route.js

@@ -0,0 +1,12 @@
+import { NextResponse } from "next/server";
+import { getRecentLogs } from "@/lib/usageDb";
+
+export async function GET() {
+  try {
+    const logs = await getRecentLogs(200);
+    return NextResponse.json(logs);
+  } catch (error) {
+    console.error("Error fetching logs:", error);
+    return NextResponse.json({ error: "Failed to fetch logs" }, { status: 500 });
+  }
+}