diff --git a/qwen3-tts-frontend/@/components/ui/dropdown-menu.tsx b/qwen3-tts-frontend/@/components/ui/dropdown-menu.tsx
deleted file mode 100644
index fc790a8..0000000
--- a/qwen3-tts-frontend/@/components/ui/dropdown-menu.tsx
+++ /dev/null
@@ -1,198 +0,0 @@
-import * as React from "react"
-import * as DropdownMenuPrimitive from "@radix-ui/react-dropdown-menu"
-import { Check, ChevronRight, Circle } from "lucide-react"
-
-import { cn } from "@/lib/utils"
-
-const DropdownMenu = DropdownMenuPrimitive.Root
-
-const DropdownMenuTrigger = DropdownMenuPrimitive.Trigger
-
-const DropdownMenuGroup = DropdownMenuPrimitive.Group
-
-const DropdownMenuPortal = DropdownMenuPrimitive.Portal
-
-const DropdownMenuSub = DropdownMenuPrimitive.Sub
-
-const DropdownMenuRadioGroup = DropdownMenuPrimitive.RadioGroup
-
-const DropdownMenuSubTrigger = React.forwardRef<
-  React.ElementRef<typeof DropdownMenuPrimitive.SubTrigger>,
-  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.SubTrigger> & {
-    inset?: boolean
-  }
->(({ className, inset, children, ...props }, ref) => (
-  <DropdownMenuPrimitive.SubTrigger
-    ref={ref}
-    className={cn(
-      "flex cursor-default select-none items-center gap-2 rounded-sm px-2 py-1.5 text-sm outline-none focus:bg-accent data-[state=open]:bg-accent [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
-      inset && "pl-8",
-      className
-    )}
-    {...props}
-  >
-    {children}
-    <ChevronRight className="ml-auto" />
-  </DropdownMenuPrimitive.SubTrigger>
-))
-DropdownMenuSubTrigger.displayName =
-  DropdownMenuPrimitive.SubTrigger.displayName
-
-const DropdownMenuSubContent = React.forwardRef<
-  React.ElementRef<typeof DropdownMenuPrimitive.SubContent>,
-  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.SubContent>
->(({ className, ...props }, ref) => (
-  <DropdownMenuPrimitive.SubContent
-    ref={ref}
-    className={cn(
-      "z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-lg 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-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 origin-[--radix-dropdown-menu-content-transform-origin]",
-      className
-    )}
-    {...props}
-  />
-))
-DropdownMenuSubContent.displayName =
-  DropdownMenuPrimitive.SubContent.displayName
-
-const DropdownMenuContent = React.forwardRef<
-  React.ElementRef<typeof DropdownMenuPrimitive.Content>,
-  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Content>
->(({ className, sideOffset = 4, ...props }, ref) => (
-  <DropdownMenuPrimitive.Portal>
-    <DropdownMenuPrimitive.Content
-      ref={ref}
-      sideOffset={sideOffset}
-      className={cn(
-        "z-50 max-h-[var(--radix-dropdown-menu-content-available-height)] min-w-[8rem] overflow-y-auto overflow-x-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-md 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-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 origin-[--radix-dropdown-menu-content-transform-origin]",
-        className
-      )}
-      {...props}
-    />
-  </DropdownMenuPrimitive.Portal>
-))
-DropdownMenuContent.displayName = DropdownMenuPrimitive.Content.displayName
-
-const DropdownMenuItem = React.forwardRef<
-  React.ElementRef<typeof DropdownMenuPrimitive.Item>,
-  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Item> & {
-    inset?: boolean
-  }
->(({ className, inset, ...props }, ref) => (
-  <DropdownMenuPrimitive.Item
-    ref={ref}
-    className={cn(
-      "relative flex cursor-default select-none items-center gap-2 rounded-sm px-2 py-1.5 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
-      inset && "pl-8",
-      className
-    )}
-    {...props}
-  />
-))
-DropdownMenuItem.displayName = DropdownMenuPrimitive.Item.displayName
-
-const DropdownMenuCheckboxItem = React.forwardRef<
-  React.ElementRef<typeof DropdownMenuPrimitive.CheckboxItem>,
-  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.CheckboxItem>
->(({ className, children, checked, ...props }, ref) => (
-  <DropdownMenuPrimitive.CheckboxItem
-    ref={ref}
-    className={cn(
-      "relative flex cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
-      className
-    )}
-    checked={checked}
-    {...props}
-  >
-    <span className="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
-      <DropdownMenuPrimitive.ItemIndicator>
-        <Check className="h-4 w-4" />
-      </DropdownMenuPrimitive.ItemIndicator>
-    </span>
-    {children}
-  </DropdownMenuPrimitive.CheckboxItem>
-))
-DropdownMenuCheckboxItem.displayName =
-  DropdownMenuPrimitive.CheckboxItem.displayName
-
-const DropdownMenuRadioItem = React.forwardRef<
-  React.ElementRef<typeof DropdownMenuPrimitive.RadioItem>,
-  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.RadioItem>
->(({ className, children, ...props }, ref) => (
-  <DropdownMenuPrimitive.RadioItem
-    ref={ref}
-    className={cn(
-      "relative flex cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
-      className
-    )}
-    {...props}
-  >
-    <span className="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
-      <DropdownMenuPrimitive.ItemIndicator>
-        <Circle className="h-2 w-2 fill-current" />
-      </DropdownMenuPrimitive.ItemIndicator>
-    </span>
-    {children}
-  </DropdownMenuPrimitive.RadioItem>
-))
-DropdownMenuRadioItem.displayName = DropdownMenuPrimitive.RadioItem.displayName
-
-const DropdownMenuLabel = React.forwardRef<
-  React.ElementRef<typeof DropdownMenuPrimitive.Label>,
-  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Label> & {
-    inset?: boolean
-  }
->(({ className, inset, ...props }, ref) => (
-  <DropdownMenuPrimitive.Label
-    ref={ref}
-    className={cn(
-      "px-2 py-1.5 text-sm font-semibold",
-      inset && "pl-8",
-      className
-    )}
-    {...props}
-  />
-))
-DropdownMenuLabel.displayName = DropdownMenuPrimitive.Label.displayName
-
-const DropdownMenuSeparator = React.forwardRef<
-  React.ElementRef<typeof DropdownMenuPrimitive.Separator>,
-  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Separator>
->(({ className, ...props }, ref) => (
-  <DropdownMenuPrimitive.Separator
-    ref={ref}
-    className={cn("-mx-1 my-1 h-px bg-muted", className)}
-    {...props}
-  />
-))
-DropdownMenuSeparator.displayName = DropdownMenuPrimitive.Separator.displayName
-
-const DropdownMenuShortcut = ({
-  className,
-  ...props
-}: React.HTMLAttributes<HTMLSpanElement>) => {
-  return (
-    <span
-      className={cn("ml-auto text-xs tracking-widest opacity-60", className)}
-      {...props}
-    />
-  )
-}
-DropdownMenuShortcut.displayName = "DropdownMenuShortcut"
-
-export {
-  DropdownMenu,
-  DropdownMenuTrigger,
-  DropdownMenuContent,
-  DropdownMenuItem,
-  DropdownMenuCheckboxItem,
-  DropdownMenuRadioItem,
-  DropdownMenuLabel,
-  DropdownMenuSeparator,
-  DropdownMenuShortcut,
-  DropdownMenuGroup,
-  DropdownMenuPortal,
-  DropdownMenuSub,
-  DropdownMenuSubContent,
-  DropdownMenuSubTrigger,
-  DropdownMenuRadioGroup,
-}
diff --git a/qwen3-tts-frontend/vite.config.ts b/qwen3-tts-frontend/vite.config.ts
index 3303259..fb32bda 100644
--- a/qwen3-tts-frontend/vite.config.ts
+++ b/qwen3-tts-frontend/vite.config.ts
@@ -12,21 +12,34 @@ export default defineConfig({
   build: {
     rollupOptions: {
       output: {
-        manualChunks: {
-          'react-vendor': ['react', 'react-dom', 'react-router-dom'],
-          'icons': ['lucide-react'],
-          'ui-vendor': [
-            '@radix-ui/react-tabs',
-            '@radix-ui/react-label',
-            '@radix-ui/react-select',
-            '@radix-ui/react-slider',
-            '@radix-ui/react-scroll-area',
-          ],
-          'form-vendor': ['react-hook-form', 'zod', '@hookform/resolvers'],
-          'utils': ['axios', 'clsx', 'tailwind-merge'],
+        manualChunks(id) {
+          if (id.includes('node_modules')) {
+            if (id.includes('react') || id.includes('react-dom') || id.includes('react-router-dom')) {
+              return 'react-vendor';
+            }
+            if (id.includes('lucide-react')) {
+              return 'icons';
+            }
+            if (id.includes('@radix-ui')) {
+              return 'radix-ui';
+            }
+            if (id.includes('react-hook-form') || id.includes('zod') || id.includes('@hookform')) {
+              return 'form-vendor';
+            }
+            if (id.includes('i18next')) {
+              return 'i18n';
+            }
+            if (id.includes('react-h5-audio-player') || id.includes('sonner')) {
+              return 'audio';
+            }
+            if (id.includes('axios') || id.includes('clsx') || id.includes('tailwind-merge') ||
+                id.includes('class-variance-authority') || id.includes('next-themes')) {
+              return 'utils';
+            }
+          }
         },
       },
     },
-    chunkSizeWarningLimit: 300,
+    chunkSizeWarningLimit: 500,
   },
 })