Refactor font handling and theme config, switch to CodeMirror editor

Replaces Monaco editor with CodeMirror in the frontend, removing related dependencies and configuration. Refactors font management to support multiple formats (woff, woff2, ttf, otf) and dynamic font switching, including backend API and frontend theme config UI. Adds gzip compression middleware to backend. Updates theme config to allow font selection and custom font upload, and improves theme preview and color customization UI. Cleans up unused code and improves sidebar and terminal font sizing responsiveness.

packages/napcat-webui-frontend/src/pages/dashboard/config/webui.tsx

@@ -7,11 +7,9 @@ import toast from 'react-hot-toast';
 import key from '@/const/key';
 
 import SaveButtons from '@/components/button/save_buttons';
-import FileInput from '@/components/input/file_input';
 import ImageInput from '@/components/input/image_input';
 
 import { siteConfig } from '@/config/site';
-import FileManager from '@/controllers/file_manager';
 import WebUIManager from '@/controllers/webui_manager';
 
 // Base64URL to Uint8Array converter
@@ -37,10 +35,10 @@ const WebUIConfigCard = () => {
     handleSubmit: handleWebuiSubmit,
     formState: { isSubmitting },
     setValue: setWebuiValue,
-  } = useForm<IConfig['webui']>({
+  } = useForm({
     defaultValues: {
       background: '',
-      customIcons: {},
+      customIcons: {} as Record<string, string>,
     },
   });
 
@@ -92,39 +90,6 @@ const WebUIConfigCard = () => {
   return (
     <>
       <title>WebUI配置 - NapCat WebUI</title>
-      <div className='flex flex-col gap-2'>
-        <div className='flex-shrink-0 w-full font-bold text-default-600 dark:text-default-400 px-1'>WebUI字体</div>
-        <div className='text-sm text-default-400'>
-          此项不需要手动保存，上传成功后需清空网页缓存并刷新
-          <FileInput
-            label='中文字体'
-            placeholder='选择字体文件'
-            accept='.ttf,.otf,.woff,.woff2'
-            onChange={async (file) => {
-              try {
-                await FileManager.uploadWebUIFont(file);
-                toast.success('上传成功');
-                setTimeout(() => {
-                  window.location.reload();
-                }, 1000);
-              } catch (error) {
-                toast.error('上传失败: ' + (error as Error).message);
-              }
-            }}
-            onDelete={async () => {
-              try {
-                await FileManager.deleteWebUIFont();
-                toast.success('删除成功');
-                setTimeout(() => {
-                  window.location.reload();
-                }, 1000);
-              } catch (error) {
-                toast.error('删除失败: ' + (error as Error).message);
-              }
-            }}
-          />
-        </div>
-      </div>
       <div className='flex flex-col gap-2'>
         <div className='flex-shrink-0 w-full font-bold text-default-600 dark:text-default-400 px-1'>背景图</div>
         <Controller