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

web/src/components/ui/input.tsx

@@ -0,0 +1,6 @@
+import type { InputHTMLAttributes } from 'react'
+import { cn } from '@/lib/utils'
+
+export function Input({ className, ...props }: InputHTMLAttributes<HTMLInputElement>) {
+  return <input {...props} className={cn('ui-control h-9 px-3', className)} />
+}