docs(api): 更新导入语句以使用类型导入

更新导入语句以使用类型导入，提高代码的可读性和性能。

- 在 `web/src/api/images.ts` 中，将 `PaginatedResponse` 的导入改为类型导入。
- 在 `web/src/pages/ImagesPage.tsx` 中，将 `ImageInfo` 的导入改为类型导入。

Author: ExquisiteCore

web/src/api/images.ts

@@ -1,4 +1,5 @@
-import { request, requestPaginated, PaginatedResponse } from './client'
+import { request, requestPaginated } from './client'
+import type { PaginatedResponse } from './client'
 
 export interface ImageInfo {
   id: string

web/src/pages/ImagesPage.tsx

@@ -1,7 +1,8 @@
 import { useCallback, useEffect, useRef, useState } from 'react'
-import { ImageInfo, listImages, uploadImage, deleteImage } from '../api/images'
+import { listImages, uploadImage, deleteImage } from '../api/images'
+import type { ImageInfo } from '../api/images'
 import { formatFileSize, formatDateTime } from '../lib/format'
-import { Upload, Trash2, Copy, Check, X, ImageIcon, Link, ChevronLeft, ChevronRight } from 'lucide-react'
+import { Upload, Trash2, Copy, Check, X, ImageIcon, ChevronLeft, ChevronRight } from 'lucide-react'
 
 export default function ImagesPage() {
   const [images, setImages] = useState<ImageInfo[]>([])