Update to Ruby 3.4.1, add Rubocop

.rubocop.yml

+inherit_gem: { rubocop-rails-omakase: rubocop.yml }
+require:
+  - rubocop-capybara
+AllCops:
+    NewCops: enable

.tool-versions

-ruby 3.3.6
+ruby 3.4.1

Gemfile

 source "https://rubygems.org"
 
-ruby "3.3.6"
+ruby "3.4.1"
 
 gem "rails", "~> 8.0.1"
 
@@ -17,14 +17,18 @@ gem "puma", ">= 5.0"
 gem "redis", ">= 4.0.1"
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
-gem "tzinfo-data", platforms: %i[ windows jruby ]
+gem "tzinfo-data", platforms: %i[windows jruby]
 
 # Reduces boot times through caching; required in config/boot.rb
 gem "bootsnap", require: false
 
 group :development, :test do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
-  gem "debug", platforms: %i[ mri windows ]
+  gem "debug", platforms: %i[mri windows]
+
+  gem "rubocop-rails-omakase", "~> 1.1"
+
+  gem "rubocop-capybara", "~> 2.21"
 end
 
 group :development do
@@ -50,8 +54,8 @@ gem "httparty", "> 0"
 
 gem "tailwindcss-rails", "~> 3.1"
 
-gem "turbo-rails", "~> 2.0"
 gem "stimulus-rails", "~> 1.3"
+gem "turbo-rails", "~> 2.0"
 
 gem "importmap-rails", "~> 2.0"
 
@@ -59,6 +63,6 @@ gem "icalendar", "~> 2.10"
 
 gem "telegram-bot-ruby", "~> 2.0"
 
-gem 'devise', '~> 4.9'
+gem "devise", "~> 4.9"
 
 gem "crono", "~> 2.1"

Gemfile.lock

@@ -74,6 +74,7 @@ GEM
       uri (>= 0.13.1)
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
+    ast (2.4.2)
     base64 (0.2.0)
     bcrypt (3.1.20)
     benchmark (0.4.0)
@@ -165,6 +166,8 @@ GEM
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     json (2.9.1)
+    language_server-protocol (3.17.0.4)
+    lint_roller (1.1.0)
     logger (1.6.5)
     loofah (2.24.0)
       crass (~> 1.0.2)
@@ -202,6 +205,10 @@ GEM
       racc (~> 1.4)
     orm_adapter (0.5.0)
     ostruct (0.6.1)
+    parallel (1.26.3)
+    parser (3.3.7.1)
+      ast (~> 2.4.1)
+      racc
     psych (5.2.2)
       date
       stringio
@@ -246,6 +253,7 @@ GEM
       rake (>= 12.2)
       thor (~> 1.0, >= 1.2.2)
       zeitwerk (~> 2.6)
+    rainbow (3.1.1)
     rake (13.2.1)
     rdoc (6.10.0)
       psych (>= 4.0.0)
@@ -260,6 +268,36 @@ GEM
       actionpack (>= 5.2)
       railties (>= 5.2)
     rexml (3.4.0)
+    rubocop (1.73.2)
+      json (~> 2.3)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.1.0)
+      parallel (~> 1.10)
+      parser (>= 3.3.0.2)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 2.9.3, < 3.0)
+      rubocop-ast (>= 1.38.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 4.0)
+    rubocop-ast (1.38.1)
+      parser (>= 3.3.1.0)
+    rubocop-capybara (2.21.0)
+      rubocop (~> 1.41)
+    rubocop-performance (1.24.0)
+      lint_roller (~> 1.1)
+      rubocop (>= 1.72.1, < 2.0)
+      rubocop-ast (>= 1.38.0, < 2.0)
+    rubocop-rails (2.30.3)
+      activesupport (>= 4.2.0)
+      lint_roller (~> 1.1)
+      rack (>= 1.1)
+      rubocop (>= 1.72.1, < 2.0)
+      rubocop-ast (>= 1.38.0, < 2.0)
+    rubocop-rails-omakase (1.1.0)
+      rubocop (>= 1.72)
+      rubocop-performance (>= 1.24)
+      rubocop-rails (>= 2.30)
+    ruby-progressbar (1.13.0)
     rubyzip (2.4.1)
     securerandom (0.4.1)
     selenium-webdriver (4.28.0)
@@ -306,6 +344,9 @@ GEM
       railties (>= 6.0.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
+    unicode-display_width (3.1.4)
+      unicode-emoji (~> 4.0, >= 4.0.4)
+    unicode-emoji (4.0.4)
     uri (1.0.2)
     useragent (0.16.11)
     warden (1.2.9)
@@ -341,6 +382,8 @@ DEPENDENCIES
   puma (>= 5.0)
   rails (~> 8.0.1)
   redis (>= 4.0.1)
+  rubocop-capybara (~> 2.21)
+  rubocop-rails-omakase (~> 1.1)
   selenium-webdriver
   solid_queue (~> 1.1)
   sprockets-rails (> 0)
@@ -353,7 +396,7 @@ DEPENDENCIES
   web-console (> 0)
 
 RUBY VERSION
-   ruby 3.3.6p108
+   ruby 3.4.1p0
 
 BUNDLED WITH
    2.6.2