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

Dockerfile

@@ -0,0 +1,33 @@
+FROM node:22-alpine AS base
+
+# --- Dependencies ---
+FROM base AS deps
+WORKDIR /app
+COPY package.json bun.lock ./
+RUN npm install --frozen-lockfile
+
+# --- Build ---
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npm run build
+
+# --- Production ---
+FROM base AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+ENV PORT=8019
+ENV HOSTNAME=0.0.0.0
+
+RUN addgroup --system --gid 1001 nodejs && \
+    adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/public ./public
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+EXPOSE 8019
+
+CMD ["node", "server.js"]