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/components/onebot/api/debug.tsx

@@ -274,8 +274,9 @@ const OneBotApiDebug: React.FC<OneBotApiDebugProps> = (props) => {
 
         <div className='flex-1 min-h-0 relative px-3 pb-2 mt-1'>
           <div className={clsx(
-            'h-full rounded-xl overflow-y-auto no-scrollbar transition-all',
-            hasBackground ? 'bg-transparent' : 'bg-white/10 dark:bg-black/10'
+            'h-full transition-all',
+            activeTab !== 'request' && 'rounded-xl overflow-y-auto no-scrollbar',
+            hasBackground ? 'bg-transparent' : (activeTab !== 'request' && 'bg-white/10 dark:bg-black/10')
           )}>
             {activeTab === 'request' ? (
               <CodeEditor
@@ -351,7 +352,7 @@ const OneBotApiDebug: React.FC<OneBotApiDebugProps> = (props) => {
 
           {/* Response Content - Code Editor */}
           {responseExpanded && (
-            <div style={{ height: responseHeight }} className="relative bg-black/5 dark:bg-black/20">
+            <div style={{ height: responseHeight }} className="relative bg-transparent">
               <PageLoading loading={isFetching} />
               <CodeEditor
                 value={responseContent || '// Waiting for response...'}

packages/napcat-webui-frontend/src/components/onebot/send_modal.tsx

@@ -61,7 +61,7 @@ const OneBotSendModal: React.FC<OneBotSendModalProps> = (props) => {
                 构造请求
               </ModalHeader>
               <ModalBody>
-                <div className='h-96 dark:bg-[rgb(30,30,30)] p-2 rounded-md border border-default-100'>
+                <div className='h-96'>
                   <CodeEditor
                     height='100%'
                     defaultLanguage='json'