Initial commit: TaskPool React panel

- React frontend with route-level code splitting
- Backend rebranded from Baihu to TaskPool
- DB brand migration script and local compatibility

Dockerfile

@@ -0,0 +1,12 @@
+# Production stage - only needs nginx and built files
+FROM nginx:alpine
+
+# Copy built files (from CI artifact or local build)
+COPY web/dist /usr/share/nginx/html
+
+# Copy nginx config
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]