Extract large route namespace blocks to separate files (#23914)

config/routes/settings.rb

@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+namespace :settings do
+  resource :profile, only: [:show, :update] do
+    resources :pictures, only: :destroy
+  end
+
+  get :preferences, to: redirect('/settings/preferences/appearance')
+
+  namespace :preferences do
+    resource :appearance, only: [:show, :update], controller: :appearance
+    resource :notifications, only: [:show, :update]
+    resource :other, only: [:show, :update], controller: :other
+  end
+
+  resources :imports, only: [:index, :show, :destroy, :create] do
+    member do
+      post :confirm
+      get :failures
+    end
+  end
+
+  resource :export, only: [:show, :create]
+
+  namespace :exports, constraints: { format: :csv } do
+    resources :follows, only: :index, controller: :following_accounts
+    resources :blocks, only: :index, controller: :blocked_accounts
+    resources :mutes, only: :index, controller: :muted_accounts
+    resources :lists, only: :index, controller: :lists
+    resources :domain_blocks, only: :index, controller: :blocked_domains
+    resources :bookmarks, only: :index, controller: :bookmarks
+  end
+
+  resources :two_factor_authentication_methods, only: [:index] do
+    collection do
+      post :disable
+    end
+  end
+
+  resource :otp_authentication, only: [:show, :create], controller: 'two_factor_authentication/otp_authentication'
+
+  resources :webauthn_credentials, only: [:index, :new, :create, :destroy],
+                                   path: 'security_keys',
+                                   controller: 'two_factor_authentication/webauthn_credentials' do
+    collection do
+      get :options
+    end
+  end
+
+  namespace :two_factor_authentication do
+    resources :recovery_codes, only: [:create]
+    resource :confirmation, only: [:new, :create]
+  end
+
+  resources :applications, except: [:edit] do
+    member do
+      post :regenerate
+    end
+  end
+
+  resource :delete, only: [:show, :destroy]
+  resource :migration, only: [:show, :create]
+
+  namespace :migration do
+    resource :redirect, only: [:new, :create, :destroy]
+  end
+
+  resources :aliases, only: [:index, :create, :destroy]
+  resources :sessions, only: [:destroy]
+  resources :featured_tags, only: [:index, :create, :destroy]
+  resources :login_activities, only: [:index]
+end