Assisted-by: Claude Opus 4.6 via pi

diff --git a/.pi/agent/AGENTS.md b/.pi/agent/AGENTS.md
new file mode 100644
index 0000000..6e51e10
--- /dev/null
+++ b/.pi/agent/AGENTS.md
@@ -0,0 +1,5 @@
+# Project conventions
+
+## Ruby
+
+- No `frozen_string_literal` comments. Omit them from all Ruby files.
diff --git a/Gemfile b/Gemfile
index f66ab3b..105965a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,3 @@
-# frozen_string_literal: true
-
 source "https://rubygems.org"
 
 gem "nokogiri"
diff --git a/Rakefile b/Rakefile
index c86dc00..0d83bfc 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,5 +1,3 @@
-# frozen_string_literal: true
-
 require_relative "lib/feed"
 require_relative "lib/sync"
 
diff --git a/lib/feed.rb b/lib/feed.rb
index 2604dd8..ec9c9e2 100644
--- a/lib/feed.rb
+++ b/lib/feed.rb
@@ -1,5 +1,3 @@
-# frozen_string_literal: true
-
 require "net/http"
 require "nokogiri"
 require "uri"
diff --git a/lib/sync.rb b/lib/sync.rb
index 88c17a8..9aa5f74 100644
--- a/lib/sync.rb
+++ b/lib/sync.rb
@@ -1,5 +1,3 @@
-# frozen_string_literal: true
-
 require "fileutils"
 require "net/http"
 require "uri"