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

docker-compose.yml

@@ -0,0 +1,15 @@
+services:
+  analytics:
+    build: .
+    container_name: new-api-analytics
+    restart: unless-stopped
+    ports:
+      - "8019:8019"
+    env_file:
+      - .env.production
+    networks:
+      - sinobridge
+
+networks:
+  sinobridge:
+    external: true