compute timezone offset from difference between requested_at and server local time

bin/spring

@@ -3,12 +3,17 @@
 # This file loads Spring without loading other gems in the Gemfile in order to be fast.
 # It gets overwritten when you run the `spring binstub` command.
 
-if !defined?(Spring) && [nil, "development", "test"].include?(ENV["RAILS_ENV"])
+if !defined?(Spring) &&
+     [nil, "development", "test", "staging"].include?(ENV["RAILS_ENV"])
   require "bundler"
 
-  Bundler.locked_gems.specs.find { |spec| spec.name == "spring" }&.tap do |spring|
-    Gem.use_paths Gem.dir, Bundler.bundle_path.to_s, *Gem.path
-    gem "spring", spring.version
-    require "spring/binstub"
-  end
+  Bundler
+    .locked_gems
+    .specs
+    .find { |spec| spec.name == "spring" }
+    &.tap do |spring|
+      Gem.use_paths Gem.dir, Bundler.bundle_path.to_s, *Gem.path
+      gem "spring", spring.version
+      require "spring/binstub"
+    end
 end