SECURITY: Fix authentication and file manager display issues

- Add JWT authentication middleware to file manager and metrics APIs
- Fix WebSocket authentication timing race conditions
- Resolve file manager grid view display issue by eliminating request ID complexity
- Fix FileViewer translation function undefined error
- Simplify SSH authentication flow and remove duplicate connection attempts
- Ensure consistent user authentication across all services

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/ui/Desktop/Apps/File Manager/components/FileViewer.tsx

@@ -1,5 +1,6 @@
 import React, { useState, useEffect } from "react";
 import { cn } from "@/lib/utils";
+import { useTranslation } from "react-i18next";
 import {
   FileText,
   Image as ImageIcon,
@@ -276,6 +277,7 @@ export function FileViewer({
   onSave,
   onDownload,
 }: FileViewerProps) {
+  const { t } = useTranslation();
   const [editedContent, setEditedContent] = useState(content);
   const [originalContent, setOriginalContent] = useState(
     savedContent || content,