diff --git a/Gemfile b/Gemfile
index 69d4d8c..c2756bc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,6 +15,7 @@ group :development, :test do
   gem "puma"
   gem "rails"
   gem "rake"
+  gem "rexml" # required by erb_lint
   gem "rspec-rails"
   gem "rubocop-katalyst", require: false
   gem "shoulda-matchers"
diff --git a/Gemfile.lock b/Gemfile.lock
index 4290cc8..152fd3d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -248,6 +248,7 @@ GEM
     regexp_parser (2.9.2)
     reline (0.5.10)
       io-console (~> 0.5)
+    rexml (3.3.7)
     rspec-core (3.13.1)
       rspec-support (~> 3.13.0)
     rspec-expectations (3.13.3)
@@ -358,6 +359,7 @@ DEPENDENCIES
   rails
   rails-controller-testing
   rake
+  rexml
   rspec-rails
   rubocop-katalyst
   shoulda-matchers
diff --git a/spec/dummy/bin/brakeman b/spec/dummy/bin/brakeman
new file mode 100755
index 0000000..48d0850
--- /dev/null
+++ b/spec/dummy/bin/brakeman
@@ -0,0 +1,9 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require "rubygems"
+require "bundler/setup"
+
+ARGV.unshift("--ensure-latest")
+
+load Gem.bin_path("brakeman", "brakeman")
diff --git a/spec/dummy/bin/rubocop b/spec/dummy/bin/rubocop
new file mode 100755
index 0000000..25406fe
--- /dev/null
+++ b/spec/dummy/bin/rubocop
@@ -0,0 +1,10 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require "rubygems"
+require "bundler/setup"
+
+# explicit rubocop config increases performance slightly while avoiding config confusion.
+ARGV.unshift("--config", File.expand_path("../.rubocop.yml", __dir__))
+
+load Gem.bin_path("rubocop", "rubocop")
diff --git a/spec/dummy/bin/setup b/spec/dummy/bin/setup
index 0e3a3a1..0615d25 100755
--- a/spec/dummy/bin/setup
+++ b/spec/dummy/bin/setup
@@ -3,11 +3,11 @@
 
 require "fileutils"
 
-# path to your application root.
 APP_ROOT = File.expand_path("..", __dir__)
+APP_NAME = "dummy"
 
-def system!(*args)
-  system(*args) || abort("\n== Command #{args} failed ==")
+def system!(*)
+  system(*, exception: true)
 end
 
 FileUtils.chdir APP_ROOT do
@@ -20,8 +20,8 @@ FileUtils.chdir APP_ROOT do
   system("bundle check") || system!("bundle install")
 
   # puts "\n== Copying sample files =="
-  # unless File.exist?('config/database.yml')
-  #   FileUtils.cp 'config/database.yml.sample', 'config/database.yml'
+  # unless File.exist?("config/database.yml")
+  #   FileUtils.cp "config/database.yml.sample", "config/database.yml"
   # end
 
   puts "\n== Preparing database =="
@@ -32,4 +32,8 @@ FileUtils.chdir APP_ROOT do
 
   puts "\n== Restarting application server =="
   system! "bin/rails restart"
+
+  # puts "\n== Configuring puma-dev =="
+  # system "ln -nfs #{APP_ROOT} ~/.puma-dev/#{APP_NAME}"
+  # system "curl -Is https://#{APP_NAME}.test/up | head -n 1"
 end
diff --git a/spec/dummy/config/application.rb b/spec/dummy/config/application.rb
index 4e3f65b..4ebce56 100644
--- a/spec/dummy/config/application.rb
+++ b/spec/dummy/config/application.rb
@@ -11,8 +11,14 @@
 
 module Dummy
   class Application < Rails::Application
+    # Initialize configuration defaults for originally generated Rails version.
     config.load_defaults Rails::VERSION::STRING.to_f
 
+    # Please, add to the `ignore` list any other `lib` subdirectories that do
+    # not contain `.rb` files, or that should not be reloaded or eager loaded.
+    # Common ones are `templates`, `generators`, or `middleware`, for example.
+    config.autoload_lib(ignore: %w[assets tasks])
+
     # Configuration for the application, engines, and railties goes here.
     #
     # These settings can be overridden in specific environments using the files
diff --git a/spec/dummy/config/environments/development.rb b/spec/dummy/config/environments/development.rb
index 9e46077..cdf485f 100644
--- a/spec/dummy/config/environments/development.rb
+++ b/spec/dummy/config/environments/development.rb
@@ -8,7 +8,7 @@
   # In the development environment your application's code is reloaded any time
   # it changes. This slows down response time but is perfect for development
   # since you don't have to restart the web server when you make code changes.
-  config.cache_classes = false
+  config.enable_reloading = true
 
   # Do not eager load code on boot.
   config.eager_load = false
@@ -16,6 +16,9 @@
   # Show full error reports.
   config.consider_all_requests_local = true
 
+  # Enable server timing.
+  config.server_timing = true
+
   # Enable/disable caching. By default caching is disabled.
   # Run rails dev:cache to toggle caching.
   if Rails.root.join("tmp/caching-dev.txt").exist?
@@ -23,9 +26,7 @@
     config.action_controller.enable_fragment_cache_logging = true
 
     config.cache_store = :memory_store
-    config.public_file_server.headers = {
-      "Cache-Control" => "public, max-age=#{2.days.to_i}",
-    }
+    config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{2.days.to_i}" }
   else
     config.action_controller.perform_caching = false
 
@@ -38,8 +39,12 @@
   # Don't care if the mailer can't send.
   config.action_mailer.raise_delivery_errors = false
 
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
   config.action_mailer.perform_caching = false
 
+  config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
+
   # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log
 
@@ -55,24 +60,21 @@
   # Highlight code that triggered database queries in logs.
   config.active_record.verbose_query_logs = true
 
-  # Debug mode disables concatenation and preprocessing of assets.
-  # This option may cause significant delays in view rendering with a large
-  # number of complex assets.
-  # config.assets.debug = true
-
-  # Suppress logger output for asset requests.
-  config.assets.quiet = true
+  # Highlight code that enqueued background job in logs.
+  config.active_job.verbose_enqueue_logs = true
 
   # Raises error for missing translations.
   # config.i18n.raise_on_missing_translations = true
 
   # Annotate rendered view with file names.
-  # config.action_view.annotate_rendered_view_with_filenames = true
-
-  # Use an evented file watcher to asynchronously detect changes in source code,
-  # routes, locales, etc. This feature depends on the listen gem.
-  # config.file_watcher = ActiveSupport::EventedFileUpdateChecker
+  config.action_view.annotate_rendered_view_with_filenames = true
 
   # Uncomment if you wish to allow Action Cable access from any origin.
   # config.action_cable.disable_request_forgery_protection = true
+
+  # Raise error when a before_action's only/except options reference missing actions.
+  config.action_controller.raise_on_missing_callback_actions = true
+
+  # Apply autocorrection by RuboCop to files generated by `bin/rails generate`.
+  # config.generators.apply_rubocop_autocorrect_after_generate!
 end
diff --git a/spec/dummy/config/environments/production.rb b/spec/dummy/config/environments/production.rb
index d8627e6..8f544d1 100644
--- a/spec/dummy/config/environments/production.rb
+++ b/spec/dummy/config/environments/production.rb
@@ -6,7 +6,7 @@
   # Settings specified here will take precedence over those in config/application.rb.
 
   # Code is not reloaded between requests.
-  config.cache_classes = true
+  config.enable_reloading = false
 
   # Eager load code on boot. This eager loads most of Rails and
   # your application in memory, allowing both threaded web servers
@@ -15,55 +15,63 @@
   config.eager_load = true
 
   # Full error reports are disabled and caching is turned on.
-  config.consider_all_requests_local       = false
+  config.consider_all_requests_local = false
   config.action_controller.perform_caching = true
 
-  # Ensures that a master key has been made available in either ENV["RAILS_MASTER_KEY"]
-  # or in config/master.key. This key is used to decrypt credentials (and other encrypted files).
+  # Ensures that a master key has been made available in ENV["RAILS_MASTER_KEY"], config/master.key, or an environment
+  # key such as config/credentials/production.key. This key is used to decrypt credentials (and other encrypted files).
   # config.require_master_key = true
 
-  # Disable serving static files from the `/public` folder by default since
-  # Apache or NGINX already handles this.
-  config.public_file_server.enabled = ENV["RAILS_SERVE_STATIC_FILES"].present?
-
-  # Compress CSS using a preprocessor.
-  # config.assets.css_compressor = :sass
-
-  # Do not fallback to assets pipeline if a precompiled asset is missed.
-  config.assets.compile = false
+  # Disable serving static files from `public/`, relying on NGINX/Apache to do so instead.
+  # config.public_file_server.enabled = false
 
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
-  # config.asset_host = 'http://assets.example.com'
+  # config.asset_host = "http://assets.example.com"
 
   # Specifies the header that your server uses for sending files.
-  # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
-  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX
+  # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for Apache
+  # config.action_dispatch.x_sendfile_header = "X-Accel-Redirect" # for NGINX
 
   # Store uploaded files on the local file system (see config/storage.yml for options).
   config.active_storage.service = :local
 
   # Mount Action Cable outside main process or domain.
   # config.action_cable.mount_path = nil
-  # config.action_cable.url = 'wss://example.com/cable'
-  # config.action_cable.allowed_request_origins = [ 'http://example.com', /http:\/\/example.*/ ]
+  # config.action_cable.url = "wss://example.com/cable"
+  # config.action_cable.allowed_request_origins = [ "http://example.com", /http:\/\/example.*/ ]
+
+  # Assume all access to the app is happening through a SSL-terminating reverse proxy.
+  # Can be used together with config.force_ssl for Strict-Transport-Security and secure cookies.
+  # config.assume_ssl = true
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
-  # config.force_ssl = true
+  config.force_ssl = true
 
-  # Include generic and useful information about system operation, but avoid logging too much
-  # information to avoid inadvertent exposure of personally identifiable information (PII).
-  config.log_level = :info
+  # Skip http-to-https redirect for the default health check endpoint.
+  # config.ssl_options = { redirect: { exclude: ->(request) { request.path == "/up" } } }
+
+  # Log to STDOUT by default
+  config.logger = ActiveSupport::Logger.new($stdout)
+                    .tap  { |logger| logger.formatter = Logger::Formatter.new }
+                    .then { |logger| ActiveSupport::TaggedLogging.new(logger) }
 
   # Prepend all log lines with the following tags.
   config.log_tags = [:request_id]
 
+  # "info" includes generic and useful information about system operation, but avoids logging too much
+  # information to avoid inadvertent exposure of personally identifiable information (PII). If you
+  # want to log everything, set the level to "debug".
+  config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")
+
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
 
   # Use a real queuing backend for Active Job (and separate queues per environment).
-  # config.active_job.queue_adapter     = :resque
+  # config.active_job.queue_adapter = :resque
   # config.active_job.queue_name_prefix = "dummy_production"
 
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
   config.action_mailer.perform_caching = false
 
   # Ignore bad email addresses and do not raise email delivery errors.
@@ -74,49 +82,17 @@
   # the I18n.default_locale when a translation cannot be found).
   config.i18n.fallbacks = true
 
-  # Send deprecation notices to registered listeners.
-  config.active_support.deprecation = :notify
-
-  # Log disallowed deprecations.
-  config.active_support.disallowed_deprecation = :log
-
-  # Tell Active Support which deprecation messages to disallow.
-  config.active_support.disallowed_deprecation_warnings = []
-
-  # Use default logging formatter so that PID and timestamp are not suppressed.
-  config.log_formatter = Logger::Formatter.new
-
-  # Use a different logger for distributed setups.
-  # require "syslog/logger"
-  # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new 'app-name')
-
-  if ENV["RAILS_LOG_TO_STDOUT"].present?
-    logger           = ActiveSupport::Logger.new($stdout)
-    logger.formatter = config.log_formatter
-    config.logger    = ActiveSupport::TaggedLogging.new(logger)
-  end
+  # Don't log any deprecations.
+  config.active_support.report_deprecations = false
 
   # Do not dump schema after migrations.
   config.active_record.dump_schema_after_migration = false
 
-  # Inserts middleware to perform automatic connection switching.
-  # The `database_selector` hash is used to pass options to the DatabaseSelector
-  # middleware. The `delay` is used to determine how long to wait after a write
-  # to send a subsequent read to the primary.
-  #
-  # The `database_resolver` class is used by the middleware to determine which
-  # database is appropriate to use based on the time delay.
-  #
-  # The `database_resolver_context` class is used by the middleware to set
-  # timestamps for the last write to the primary. The resolver uses the context
-  # class timestamps to determine how long to wait before reading from the
-  # replica.
-  #
-  # By default Rails will store a last write timestamp in the session. The
-  # DatabaseSelector middleware is designed as such you can define your own
-  # strategy for connection switching and pass that into the middleware through
-  # these configuration options.
-  # config.active_record.database_selector = { delay: 2.seconds }
-  # config.active_record.database_resolver = ActiveRecord::Middleware::DatabaseSelector::Resolver
-  # config.active_record.database_resolver_context = ActiveRecord::Middleware::DatabaseSelector::Resolver::Session
+  # Enable DNS rebinding protection and other `Host` header attacks.
+  # config.hosts = [
+  #   "example.com",     # Allow requests from example.com
+  #   /.*\.example\.com/ # Allow requests from subdomains like `www.example.com`
+  # ]
+  # Skip DNS rebinding protection for the default health check endpoint.
+  # config.host_authorization = { exclude: ->(request) { request.path == "/up" } }
 end
diff --git a/spec/dummy/config/environments/test.rb b/spec/dummy/config/environments/test.rb
index a1d6c5c..b8b261a 100644
--- a/spec/dummy/config/environments/test.rb
+++ b/spec/dummy/config/environments/test.rb
@@ -10,26 +10,25 @@
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
-  config.cache_classes = true
+  # While tests run files are not watched, reloading is not necessary.
+  config.enable_reloading = false
 
-  # Do not eager load code on boot. This avoids loading your whole application
-  # just for the purpose of running a single test. If you are using a tool that
-  # preloads Rails for running tests, you may have to set it to true.
-  config.eager_load = false
+  # Eager loading loads your entire application. When running a single test locally,
+  # this is usually not necessary, and can slow down your test suite. However, it's
+  # recommended that you enable it in continuous integration systems to ensure eager
+  # loading is working properly before deploying your code.
+  config.eager_load = ENV["CI"].present?
 
   # Configure public file server for tests with Cache-Control for performance.
-  config.public_file_server.enabled = true
-  config.public_file_server.headers = {
-    "Cache-Control" => "public, max-age=#{1.hour.to_i}",
-  }
+  config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{1.hour.to_i}" }
 
   # Show full error reports and disable caching.
-  config.consider_all_requests_local       = true
+  config.consider_all_requests_local = true
   config.action_controller.perform_caching = false
   config.cache_store = :null_store
 
-  # Raise exceptions instead of rendering exception templates.
-  config.action_dispatch.show_exceptions = :none
+  # Render exception templates for rescuable exceptions and raise for other exceptions.
+  config.action_dispatch.show_exceptions = :rescuable
 
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false
@@ -37,6 +36,8 @@
   # Store uploaded files on the local file system in a temporary directory.
   config.active_storage.service = :test
 
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
   config.action_mailer.perform_caching = false
 
   # Tell Action Mailer not to deliver emails to the real world.
@@ -44,6 +45,10 @@
   # ActionMailer::Base.deliveries array.
   config.action_mailer.delivery_method = :test
 
+  # Unlike controllers, the mailer instance doesn't have any context about the
+  # incoming request so you'll need to provide the :host parameter yourself.
+  config.action_mailer.default_url_options = { host: "www.example.com" }
+
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr
 
@@ -58,4 +63,7 @@
 
   # Annotate rendered view with file names.
   # config.action_view.annotate_rendered_view_with_filenames = true
+
+  # Raise error when a before_action's only/except options reference missing actions.
+  config.action_controller.raise_on_missing_callback_actions = true
 end
diff --git a/spec/dummy/config/initializers/assets.rb b/spec/dummy/config/initializers/assets.rb
index 101a290..8544c07 100644
--- a/spec/dummy/config/initializers/assets.rb
+++ b/spec/dummy/config/initializers/assets.rb
@@ -7,8 +7,3 @@
 
 # Add additional assets to the asset load path.
 # Rails.application.config.assets.paths << Emoji.images_path
-
-# Precompile additional assets.
-# application.js, application.css, and all non-JS/CSS in the app/assets
-# folder are already added.
-# Rails.application.config.assets.precompile += %w( admin.js admin.css )
diff --git a/spec/dummy/config/initializers/content_security_policy.rb b/spec/dummy/config/initializers/content_security_policy.rb
index 87fd451..35ab3fd 100644
--- a/spec/dummy/config/initializers/content_security_policy.rb
+++ b/spec/dummy/config/initializers/content_security_policy.rb
@@ -2,29 +2,26 @@
 
 # Be sure to restart your server when you modify this file.
 
-# Define an application-wide content security policy
-# For further information see the following documentation
-# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
+# Define an application-wide content security policy.
+# See the Securing Rails Applications Guide for more information:
+# https://guides.rubyonrails.org/security.html#content-security-policy-header
 
-# Rails.application.config.content_security_policy do |policy|
-#   policy.default_src :self, :https
-#   policy.font_src    :self, :https, :data
-#   policy.img_src     :self, :https, :data
-#   policy.object_src  :none
-#   policy.script_src  :self, :https
-#   policy.style_src   :self, :https
-
-#   # Specify URI for violation reports
-#   # policy.report_uri "/csp-violation-report-endpoint"
+# Rails.application.configure do
+#   config.content_security_policy do |policy|
+#     policy.default_src :self, :https
+#     policy.font_src    :self, :https, :data
+#     policy.img_src     :self, :https, :data
+#     policy.object_src  :none
+#     policy.script_src  :self, :https
+#     policy.style_src   :self, :https
+#     # Specify URI for violation reports
+#     # policy.report_uri "/csp-violation-report-endpoint"
+#   end
+#
+#   # Generate session nonces for permitted importmap, inline scripts, and inline styles.
+#   config.content_security_policy_nonce_generator = ->(request) { request.session.id.to_s }
+#   config.content_security_policy_nonce_directives = %w(script-src style-src)
+#
+#   # Report violations without enforcing the policy.
+#   # config.content_security_policy_report_only = true
 # end
-
-# If you are using UJS then enable automatic nonce generation
-# Rails.application.config.content_security_policy_nonce_generator = -> request { SecureRandom.base64(16) }
-
-# Set the nonce only to specific directives
-# Rails.application.config.content_security_policy_nonce_directives = %w(script-src)
-
-# Report CSP violations to a specified URI
-# For further information see the following documentation:
-# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only
-# Rails.application.config.content_security_policy_report_only = true
diff --git a/spec/dummy/config/initializers/filter_parameter_logging.rb b/spec/dummy/config/initializers/filter_parameter_logging.rb
index 3babc73..5a36c53 100644
--- a/spec/dummy/config/initializers/filter_parameter_logging.rb
+++ b/spec/dummy/config/initializers/filter_parameter_logging.rb
@@ -2,7 +2,9 @@
 
 # Be sure to restart your server when you modify this file.
 
-# Configure sensitive parameters which will be filtered from the log file.
+# Configure parameters to be partially matched (e.g. passw matches password) and filtered from the log file.
+# Use this to limit dissemination of sensitive information.
+# See the ActiveSupport::ParameterFilter documentation for supported notations and behaviors.
 Rails.application.config.filter_parameters += %i[
-  passw secret token _key crypt salt certificate otp ssn
+  passw email secret token _key crypt salt certificate otp ssn
 ]
diff --git a/spec/dummy/config/initializers/inflections.rb b/spec/dummy/config/initializers/inflections.rb
index dc84742..9e049dc 100644
--- a/spec/dummy/config/initializers/inflections.rb
+++ b/spec/dummy/config/initializers/inflections.rb
@@ -6,13 +6,13 @@
 # are locale specific, and you may define rules for as many different
 # locales as you wish. All of these examples are active by default:
 # ActiveSupport::Inflector.inflections(:en) do |inflect|
-#   inflect.plural /^(ox)$/i, '\1en'
-#   inflect.singular /^(ox)en/i, '\1'
-#   inflect.irregular 'person', 'people'
+#   inflect.plural /^(ox)$/i, "\\1en"
+#   inflect.singular /^(ox)en/i, "\\1"
+#   inflect.irregular "person", "people"
 #   inflect.uncountable %w( fish sheep )
 # end
 
 # These inflection rules are supported but not enabled by default:
 # ActiveSupport::Inflector.inflections(:en) do |inflect|
-#   inflect.acronym 'RESTful'
+#   inflect.acronym "RESTful"
 # end
diff --git a/spec/dummy/config/initializers/permissions_policy.rb b/spec/dummy/config/initializers/permissions_policy.rb
index 810aade..e8d0b2a 100644
--- a/spec/dummy/config/initializers/permissions_policy.rb
+++ b/spec/dummy/config/initializers/permissions_policy.rb
@@ -1,13 +1,15 @@
 # frozen_string_literal: true
 
+# Be sure to restart your server when you modify this file.
+
 # Define an application-wide HTTP permissions policy. For further
-# information see https://developers.google.com/web/updates/2018/06/feature-policy
-#
-# Rails.application.config.permissions_policy do |f|
-#   f.camera      :none
-#   f.gyroscope   :none
-#   f.microphone  :none
-#   f.usb         :none
-#   f.fullscreen  :self
-#   f.payment     :self, "https://secure.example.com"
+# information see: https://developers.google.com/web/updates/2018/06/feature-policy
+
+# Rails.application.config.permissions_policy do |policy|
+#   policy.camera      :none
+#   policy.gyroscope   :none
+#   policy.microphone  :none
+#   policy.usb         :none
+#   policy.fullscreen  :self
+#   policy.payment     :self, "https://secure.example.com"
 # end
diff --git a/spec/dummy/config/puma.rb b/spec/dummy/config/puma.rb
index e663c14..6e80052 100644
--- a/spec/dummy/config/puma.rb
+++ b/spec/dummy/config/puma.rb
@@ -1,45 +1,36 @@
 # frozen_string_literal: true
 
-# Puma can serve each request in a thread from an internal thread pool.
-# The `threads` method setting takes two numbers: a minimum and maximum.
-# Any libraries that use thread pools should be configured to match
-# the maximum value specified for Puma. Default is set to 5 threads for minimum
-# and maximum; this matches the default thread size of Active Record.
-#
-max_threads_count = ENV.fetch("RAILS_MAX_THREADS", 5)
-min_threads_count = ENV.fetch("RAILS_MIN_THREADS") { max_threads_count }
-threads min_threads_count, max_threads_count
+# This configuration file will be evaluated by Puma. The top-level methods that
+# are invoked here are part of Puma's configuration DSL. For more information
+# about methods provided by the DSL, see https://puma.io/puma/Puma/DSL.html.
 
-# Specifies the `worker_timeout` threshold that Puma will use to wait before
-# terminating a worker in development environments.
+# Puma starts a configurable number of processes (workers) and each process
+# serves each request in a thread from an internal thread pool.
 #
-worker_timeout 3600 if ENV.fetch("RAILS_ENV", "development") == "development"
-
-# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
+# The ideal number of threads per worker depends both on how much time the
+# application spends waiting for IO operations and on how much you wish to
+# to prioritize throughput over latency.
 #
-port ENV.fetch("PORT", 3000)
-
-# Specifies the `environment` that Puma will run in.
+# As a rule of thumb, increasing the number of threads will increase how much
+# traffic a given process can handle (throughput), but due to CRuby's
+# Global VM Lock (GVL) it has diminishing returns and will degrade the
+# response time (latency) of the application.
 #
-environment ENV.fetch("RAILS_ENV", "development")
-
-# Specifies the `pidfile` that Puma will use.
-pidfile ENV.fetch("PIDFILE", "tmp/pids/server.pid")
-
-# Specifies the number of `workers` to boot in clustered mode.
-# Workers are forked web server processes. If using threads and workers together
-# the concurrency of the application would be max `threads` * `workers`.
-# Workers do not work on JRuby or Windows (both of which do not support
-# processes).
+# The default is set to 3 threads as it's deemed a decent compromise between
+# throughput and latency for the average Rails application.
 #
-# workers ENV.fetch("WEB_CONCURRENCY") { 2 }
+# Any libraries that use a connection pool or another resource pool should
+# be configured to provide at least as many connections as the number of
+# threads. This includes Active Record's `pool` parameter in `database.yml`.
+threads_count = ENV.fetch("RAILS_MAX_THREADS", 3)
+threads threads_count, threads_count
 
-# Use the `preload_app!` method when specifying a `workers` number.
-# This directive tells Puma to first boot the application and load code
-# before forking the application. This takes advantage of Copy On Write
-# process behavior so workers use less memory.
-#
-# preload_app!
+# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
+port ENV.fetch("PORT", 3000)
 
-# Allow puma to be restarted by `rails restart` command.
+# Allow puma to be restarted by `bin/rails restart` command.
 plugin :tmp_restart
+
+# Specify the PID file. Defaults to tmp/pids/server.pid in development.
+# In other environments, only set the PID file if requested.
+pidfile ENV["PIDFILE"] if ENV["PIDFILE"]
diff --git a/spec/dummy/db/migrate/20240916044649_add_service_name_to_active_storage_blobs.active_storage.rb b/spec/dummy/db/migrate/20240916044649_add_service_name_to_active_storage_blobs.active_storage.rb
new file mode 100644
index 0000000..06d648b
--- /dev/null
+++ b/spec/dummy/db/migrate/20240916044649_add_service_name_to_active_storage_blobs.active_storage.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+# This migration comes from active_storage (originally 20190112182829)
+class AddServiceNameToActiveStorageBlobs < ActiveRecord::Migration[6.0]
+  def up
+    return unless table_exists?(:active_storage_blobs)
+
+    unless column_exists?(:active_storage_blobs, :service_name)
+      add_column :active_storage_blobs, :service_name, :string
+
+      # rubocop:disable Rails/SkipsModelValidations
+      if configured_service = ActiveStorage::Blob.service.name
+        ActiveStorage::Blob.unscoped.update_all(service_name: configured_service)
+      end
+      # rubocop:enable Rails/SkipsModelValidations
+
+      change_column :active_storage_blobs, :service_name, :string, null: false
+    end
+  end
+
+  def down
+    return unless table_exists?(:active_storage_blobs)
+
+    remove_column :active_storage_blobs, :service_name
+  end
+end
diff --git a/spec/dummy/db/migrate/20240916044650_create_active_storage_variant_records.active_storage.rb b/spec/dummy/db/migrate/20240916044650_create_active_storage_variant_records.active_storage.rb
new file mode 100644
index 0000000..6068380
--- /dev/null
+++ b/spec/dummy/db/migrate/20240916044650_create_active_storage_variant_records.active_storage.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+# This migration comes from active_storage (originally 20191206030411)
+class CreateActiveStorageVariantRecords < ActiveRecord::Migration[6.0]
+  def change
+    return unless table_exists?(:active_storage_blobs)
+
+    # Use Active Record's configured type for primary key
+    create_table :active_storage_variant_records, id: primary_key_type, if_not_exists: true do |t|
+      t.belongs_to :blob, null: false, index: false, type: blobs_primary_key_type
+      t.string :variation_digest, null: false
+
+      t.index %i[blob_id variation_digest], name: "index_active_storage_variant_records_uniqueness", unique: true
+      t.foreign_key :active_storage_blobs, column: :blob_id
+    end
+  end
+
+  private
+
+  def primary_key_type
+    config = Rails.configuration.generators
+    config.options[config.orm][:primary_key_type] || :primary_key
+  end
+
+  def blobs_primary_key_type
+    pkey_name = connection.primary_key(:active_storage_blobs)
+    pkey_column = connection.columns(:active_storage_blobs).find { |c| c.name == pkey_name }
+    pkey_column.bigint? ? :bigint : pkey_column.type
+  end
+end
diff --git a/spec/dummy/db/migrate/20240916044651_remove_not_null_on_active_storage_blobs_checksum.active_storage.rb b/spec/dummy/db/migrate/20240916044651_remove_not_null_on_active_storage_blobs_checksum.active_storage.rb
new file mode 100644
index 0000000..6f31822
--- /dev/null
+++ b/spec/dummy/db/migrate/20240916044651_remove_not_null_on_active_storage_blobs_checksum.active_storage.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+# This migration comes from active_storage (originally 20211119233751)
+class RemoveNotNullOnActiveStorageBlobsChecksum < ActiveRecord::Migration[6.0]
+  def change
+    return unless table_exists?(:active_storage_blobs)
+
+    change_column_null(:active_storage_blobs, :checksum, true)
+  end
+end
diff --git a/spec/dummy/db/schema.rb b/spec/dummy/db/schema.rb
index 836b769..f0cc7b5 100644
--- a/spec/dummy/db/schema.rb
+++ b/spec/dummy/db/schema.rb
@@ -12,7 +12,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2023_10_26_055211) do
+ActiveRecord::Schema[7.2].define(version: 2024_09_16_044651) do
   create_table "children", force: :cascade do |t|
     t.integer "parent_id"
     t.string "name"
diff --git a/spec/dummy/public/406-unsupported-browser.html b/spec/dummy/public/406-unsupported-browser.html
new file mode 100644
index 0000000..7cf1e16
--- /dev/null
+++ b/spec/dummy/public/406-unsupported-browser.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Your browser is not supported (406)</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1">
+  <style>
+  .rails-default-error-page {
+    background-color: #EFEFEF;
+    color: #2E2F30;
+    text-align: center;
+    font-family: arial, sans-serif;
+    margin: 0;
+  }
+
+  .rails-default-error-page div.dialog {
+    width: 95%;
+    max-width: 33em;
+    margin: 4em auto 0;
+  }
+
+  .rails-default-error-page div.dialog > div {
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #BBB;
+    border-top: #B00100 solid 4px;
+    border-top-left-radius: 9px;
+    border-top-right-radius: 9px;
+    background-color: white;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+
+  .rails-default-error-page h1 {
+    font-size: 100%;
+    color: #730E15;
+    line-height: 1.5em;
+  }
+
+  .rails-default-error-page div.dialog > p {
+    margin: 0 0 1em;
+    padding: 1em;
+    background-color: #F7F7F7;
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #999;
+    border-bottom-left-radius: 4px;
+    border-bottom-right-radius: 4px;
+    border-top-color: #DADADA;
+    color: #666;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+  </style>
+</head>
+
+<body class="rails-default-error-page">
+  <!-- This file lives in public/406-unsupported-browser.html -->
+  <div class="dialog">
+    <div>
+      <h1>Your browser is not supported.</h1>
+      <p>Please upgrade your browser to continue.</p>
+    </div>
+  </div>
+</body>
+</html>
diff --git a/spec/dummy/public/icon.png b/spec/dummy/public/icon.png
new file mode 100644
index 0000000..f3b5abc
Binary files /dev/null and b/spec/dummy/public/icon.png differ
diff --git a/spec/dummy/public/icon.svg b/spec/dummy/public/icon.svg
new file mode 100644
index 0000000..78307cc
--- /dev/null
+++ b/spec/dummy/public/icon.svg
@@ -0,0 +1,3 @@
+<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg">
+  <rect width="100%" height="100%" fill="red"/>
+</svg>
diff --git a/spec/dummy/public/robots.txt b/spec/dummy/public/robots.txt
new file mode 100644
index 0000000..c19f78a
--- /dev/null
+++ b/spec/dummy/public/robots.txt
@@ -0,0 +1 @@
+# See https://www.robotstxt.org/robotstxt.html for documentation on how to use the robots.txt file
diff --git a/spec/dummy/spec/rails_helper.rb b/spec/dummy/spec/rails_helper.rb
index 4986c91..34f0d0f 100644
--- a/spec/dummy/spec/rails_helper.rb
+++ b/spec/dummy/spec/rails_helper.rb
@@ -10,7 +10,7 @@
 require "rspec/rails"
 
 # Include support helpers
-Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
+Rails.root.glob("spec/support/**/*.rb").each { |f| require f }
 
 # Apply pending migrations
 begin