feat: remove redundant controller

app/controllers/omniauth_controller.rb

@@ -1,43 +0,0 @@
-class OmniauthController < DeviseOverrides::OmniauthCallbacksController
-  # We inherit from Devise's OmniAuth controller to get proper request handling
-  
-  def request
-    # This will be handled by OmniAuth middleware
-    # The request will be redirected to the IdP
-  end
-
-  def callback
-    # OmniAuth populates auth_hash from request.env['omniauth.auth']
-    return handle_auth_failure unless auth_hash.present?
-    
-    account_id = params[:account_id]
-    
-    # Check if SAML is enabled for this account
-    saml_settings = AccountSamlSettings.find_by(account_id: account_id, enabled: true)
-    unless saml_settings
-      return redirect_to login_page_url(error: 'saml-not-enabled')
-    end
-
-    # Find existing user by email
-    email = auth_hash['info']['email']
-    @resource = User.find_by(email: email)
-
-    if @resource
-      # Use the parent class method for SSO token flow
-      sign_in_user
-    else
-      redirect_to login_page_url(error: 'no-account-found')
-    end
-  end
-
-  def failure
-    redirect_to login_page_url(error: params[:message] || 'saml-auth-failed')
-  end
-
-  private
-
-  def handle_auth_failure
-    error_message = request.env['omniauth.error'] || 'Unknown error'
-    redirect_to login_page_url(error: 'saml-auth-failed')
-  end
-end