feat(ui): 集成 shadcn/ui 原语、Framer Motion 动画和 Sonner Toast

- 添加 shadcn/ui 风格原语组件 (Button, Input, Dialog, Select, Slider, Switch, Tooltip)
- 集成 Framer Motion 动画库，添加动画预设
- 集成 Sonner Toast 通知系统
- 改造 ChatMessage 添加淡入动画和复制按钮
- 改造 Sidebar 添加动画、空状态引导和骨架屏
- 改造 ConfigPanel 使用新原语组件
- 优化 Chat 页面空状态和连接状态指示器
- 添加 tailwindcss-animate 插件

packages/ui/src/primitives/Dialog.tsx

@@ -0,0 +1,95 @@
+import * as DialogPrimitive from '@radix-ui/react-dialog';
+import { X } from 'lucide-react';
+import { forwardRef } from 'react';
+import { cn } from '../utils/cn';
+
+export const Dialog = DialogPrimitive.Root;
+export const DialogTrigger = DialogPrimitive.Trigger;
+export const DialogPortal = DialogPrimitive.Portal;
+export const DialogClose = DialogPrimitive.Close;
+
+export const DialogOverlay = forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Overlay>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Overlay>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Overlay
+    ref={ref}
+    className={cn(
+      'fixed inset-0 z-50 bg-black/80 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0',
+      className
+    )}
+    {...props}
+  />
+));
+DialogOverlay.displayName = DialogPrimitive.Overlay.displayName;
+
+export const DialogContent = forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Content>
+>(({ className, children, ...props }, ref) => (
+  <DialogPortal>
+    <DialogOverlay />
+    <DialogPrimitive.Content
+      ref={ref}
+      className={cn(
+        'fixed left-[50%] top-[50%] z-50 translate-x-[-50%] translate-y-[-50%] rounded-lg border border-gray-700 bg-gray-800 p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%]',
+        className
+      )}
+      {...props}
+    >
+      {children}
+      <DialogPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-primary-500">
+        <X className="h-4 w-4" />
+      </DialogPrimitive.Close>
+    </DialogPrimitive.Content>
+  </DialogPortal>
+));
+DialogContent.displayName = DialogPrimitive.Content.displayName;
+
+export function DialogHeader({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) {
+  return (
+    <div
+      className={cn('flex flex-col space-y-1.5 text-center sm:text-left', className)}
+      {...props}
+    />
+  );
+}
+
+export function DialogFooter({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) {
+  return (
+    <div
+      className={cn('flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2', className)}
+      {...props}
+    />
+  );
+}
+
+export const DialogTitle = forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Title>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Title>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Title
+    ref={ref}
+    className={cn('text-lg font-semibold text-gray-100', className)}
+    {...props}
+  />
+));
+DialogTitle.displayName = DialogPrimitive.Title.displayName;
+
+export const DialogDescription = forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Description>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Description>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Description
+    ref={ref}
+    className={cn('text-sm text-gray-400', className)}
+    {...props}
+  />
+));
+DialogDescription.displayName = DialogPrimitive.Description.displayName;