Remove Settings and Setup pages along with their tests and related API services

- Deleted Settings.tsx and Setup.tsx pages, which included functionality for changing passwords and setting up an admin account.
- Removed associated test files for Setup page.
- Eliminated API service definitions related to proxy hosts, remote servers, import functionality, and health checks.
- Cleaned up mock data and test setup files.
- Removed configuration files for TypeScript, Vite, and Tailwind CSS.
- Deleted scripts for testing coverage, release management, Dockerfile validation, and Python compilation checks.
- Removed Sourcery pre-commit wrapper script.

frontend/src/components/ui/Card.tsx

@@ -1,31 +0,0 @@
-import { ReactNode } from 'react'
-import { clsx } from 'clsx'
-
-interface CardProps {
-  children: ReactNode
-  className?: string
-  title?: string
-  description?: string
-  footer?: ReactNode
-}
-
-export function Card({ children, className, title, description, footer }: CardProps) {
-  return (
-    <div className={clsx('bg-dark-card rounded-lg border border-gray-800 overflow-hidden', className)}>
-      {(title || description) && (
-        <div className="px-6 py-4 border-b border-gray-800">
-          {title && <h3 className="text-lg font-medium text-white">{title}</h3>}
-          {description && <p className="mt-1 text-sm text-gray-400">{description}</p>}
-        </div>
-      )}
-      <div className="p-6">
-        {children}
-      </div>
-      {footer && (
-        <div className="px-6 py-4 bg-gray-900/50 border-t border-gray-800">
-          {footer}
-        </div>
-      )}
-    </div>
-  )
-}