feat: API analytics dashboard with i18n and theme support

Next.js full-stack analytics dashboard for new-api.
- Direct PostgreSQL readonly queries on logs table
- 5 pages: Dashboard, Rankings, Aggregation, Logs, Detail
- Dark/Light/System theme with CSS variables
- Chinese/English i18n (default Chinese)
- Recharts with dual Y-axis for input/output tokens
- Lucide icons + Motion animations
- Docker + docker-compose with external sinobridge network, port 8019

components/ClientProviders.tsx

@@ -0,0 +1,17 @@
+"use client";
+
+import { type ReactNode } from "react";
+import { I18nProvider } from "@/lib/i18n";
+import { ThemeProvider } from "@/lib/theme";
+import { Sidebar } from "@/components/Sidebar";
+
+export function ClientProviders({ children }: { children: ReactNode }) {
+  return (
+    <ThemeProvider>
+      <I18nProvider>
+        <Sidebar />
+        <main className="ml-[220px] min-h-screen p-6 lg:p-8">{children}</main>
+      </I18nProvider>
+    </ThemeProvider>
+  );
+}