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/pages/Settings.tsx

@@ -1,75 +0,0 @@
-import { useState } from 'react'
-import { Card } from '../components/ui/Card'
-import { Input } from '../components/ui/Input'
-import { Button } from '../components/ui/Button'
-import { toast } from '../components/Toast'
-import client from '../api/client'
-
-export default function Settings() {
-  const [oldPassword, setOldPassword] = useState('')
-  const [newPassword, setNewPassword] = useState('')
-  const [confirmPassword, setConfirmPassword] = useState('')
-  const [loading, setLoading] = useState(false)
-
-  const handleChangePassword = async (e: React.FormEvent) => {
-    e.preventDefault()
-    if (newPassword !== confirmPassword) {
-      toast.error('New passwords do not match')
-      return
-    }
-
-    setLoading(true)
-    try {
-      await client.post('/auth/change-password', {
-        old_password: oldPassword,
-        new_password: newPassword,
-      })
-      toast.success('Password updated successfully')
-      setOldPassword('')
-      setNewPassword('')
-      setConfirmPassword('')
-    } catch (err: any) {
-      toast.error(err.response?.data?.error || 'Failed to update password')
-    } finally {
-      setLoading(false)
-    }
-  }
-
-  return (
-    <div className="p-8">
-      <h1 className="text-3xl font-bold text-white mb-6">Settings</h1>
-      <div className="grid gap-6">
-        <Card title="Change Password" className="max-w-md">
-          <form onSubmit={handleChangePassword} className="space-y-4">
-            <Input
-              label="Current Password"
-              type="password"
-              value={oldPassword}
-              onChange={e => setOldPassword(e.target.value)}
-              required
-            />
-            <Input
-              label="New Password"
-              type="password"
-              value={newPassword}
-              onChange={e => setNewPassword(e.target.value)}
-              required
-              minLength={8}
-            />
-            <Input
-              label="Confirm New Password"
-              type="password"
-              value={confirmPassword}
-              onChange={e => setConfirmPassword(e.target.value)}
-              required
-              minLength={8}
-            />
-            <Button type="submit" isLoading={loading}>
-              Update Password
-            </Button>
-          </form>
-        </Card>
-      </div>
-    </div>
-  )
-}