refactor: replace legacy settings pages with redirect handlers + delete unused files

- /sites/:id/settings → redirect handler for GSC OAuth callback + deep links
- /org-settings → redirect handler for tab deep links
- Deleted: OrganizationSettings.tsx, SettingsModalWrapper.tsx, settings-modal-context.tsx

components/settings/SettingsModalWrapper.tsx

@@ -1,124 +0,0 @@
-'use client'
-
-import { useState, useEffect } from 'react'
-import Link from 'next/link'
-import { SettingsModal, type SettingsSection } from '@ciphera-net/ui'
-import { UserIcon, LockIcon, BellIcon, ChevronRightIcon } from '@ciphera-net/ui'
-import { NotificationToggleList, type NotificationOption } from '@ciphera-net/ui'
-import ProfileSettings from '@/components/settings/ProfileSettings'
-import TrustedDevicesCard from '@/components/settings/TrustedDevicesCard'
-import SecurityActivityCard from '@/components/settings/SecurityActivityCard'
-import { useSettingsModal } from '@/lib/settings-modal-context'
-import { useAuth } from '@/lib/auth/context'
-import { updateUserPreferences } from '@/lib/api/user'
-
-// --- Security Alerts ---
-
-const SECURITY_ALERT_OPTIONS: NotificationOption[] = [
-  { key: 'login_alerts', label: 'Login Activity', description: 'New device sign-ins and suspicious login attempts.' },
-  { key: 'password_alerts', label: 'Password Changes', description: 'Password changes and session revocations.' },
-  { key: 'two_factor_alerts', label: 'Two-Factor Authentication', description: '2FA enabled/disabled and recovery code changes.' },
-]
-
-function SecurityAlertsCard() {
-  const { user } = useAuth()
-  const [emailNotifications, setEmailNotifications] = useState<Record<string, boolean>>({})
-
-  useEffect(() => {
-    if (user?.preferences?.email_notifications) {
-      setEmailNotifications(user.preferences.email_notifications)
-    } else {
-      const defaults = SECURITY_ALERT_OPTIONS.reduce((acc, option) => ({
-        ...acc,
-        [option.key]: true
-      }), {} as Record<string, boolean>)
-      setEmailNotifications(defaults)
-    }
-  }, [user])
-
-  const handleToggle = async (key: string) => {
-    const newState = {
-      ...emailNotifications,
-      [key]: !emailNotifications[key]
-    }
-    setEmailNotifications(newState)
-    try {
-      await updateUserPreferences({
-        email_notifications: newState as { new_file_received: boolean; file_downloaded: boolean; login_alerts: boolean; password_alerts: boolean; two_factor_alerts: boolean }
-      })
-    } catch {
-      setEmailNotifications(prev => ({
-        ...prev,
-        [key]: !prev[key]
-      }))
-    }
-  }
-
-  return (
-    <NotificationToggleList
-      title="Security Alerts"
-      description="Choose which security events trigger email alerts"
-      icon={<BellIcon className="w-5 h-5 text-brand-orange" />}
-      options={SECURITY_ALERT_OPTIONS}
-      values={emailNotifications}
-      onToggle={handleToggle}
-    />
-  )
-}
-
-// --- Notification Center Placeholder ---
-
-function NotificationCenterPlaceholder() {
-  return (
-    <div className="text-center max-w-md mx-auto py-8">
-      <BellIcon className="w-12 h-12 text-neutral-300 mx-auto mb-4" />
-      <h3 className="text-lg font-medium text-white mb-2">Notification Center</h3>
-      <p className="text-sm text-neutral-500 mb-4">View and manage all your notifications in one place.</p>
-      <Link href="/notifications" className="inline-flex items-center gap-2 px-4 py-2 bg-brand-orange text-white rounded-lg hover:bg-brand-orange/90 transition-colors">
-        Open Notification Center
-        <ChevronRightIcon className="w-4 h-4" />
-      </Link>
-    </div>
-  )
-}
-
-// --- Main Wrapper ---
-
-export default function SettingsModalWrapper() {
-  const { isOpen, closeSettings } = useSettingsModal()
-
-  const sections: SettingsSection[] = [
-    {
-      id: 'pulse',
-      label: 'Account',
-      icon: UserIcon,
-      defaultExpanded: true,
-      items: [
-        { id: 'profile', label: 'Profile', content: <ProfileSettings activeTab="profile" borderless hideDangerZone /> },
-        { id: 'security', label: 'Security', content: <ProfileSettings activeTab="security" borderless /> },
-        { id: 'preferences', label: 'Preferences', content: <ProfileSettings activeTab="preferences" borderless /> },
-        { id: 'danger-zone', label: 'Danger Zone', content: <ProfileSettings activeTab="danger-zone" borderless /> },
-      ],
-    },
-    {
-      id: 'security-section',
-      label: 'Security',
-      icon: LockIcon,
-      items: [
-        { id: 'devices', label: 'Trusted Devices', content: <TrustedDevicesCard /> },
-        { id: 'activity', label: 'Security Activity', content: <SecurityActivityCard /> },
-      ],
-    },
-    {
-      id: 'notifications',
-      label: 'Notifications',
-      icon: BellIcon,
-      items: [
-        { id: 'security-alerts', label: 'Security Alerts', content: <SecurityAlertsCard /> },
-        { id: 'center', label: 'Notification Center', content: <NotificationCenterPlaceholder /> },
-      ],
-    },
-  ]
-
-  return <SettingsModal open={isOpen} onClose={closeSettings} sections={sections} />
-}