Merge pull request #21640 from zbeekman/fix-stop-hook-no-changed-files

.claude/settings.json: skip tests hook when no files changed

Author: MikeMcQuaid

Library/Homebrew/dev-cmd/tests.rb

@@ -230,7 +230,8 @@ def non_linux_files(files)
       def changed_test_files
         changed_files = Utils.popen_read("git", "diff", "--name-only", "main")
 
-        raise UsageError, "No files have been changed from the `main` branch!" if changed_files.blank?
+        odebug "No files have been changed from the `main` branch." if changed_files.blank?
+        return [] if changed_files.blank?
 
         filestub_regex = %r{Library/Homebrew/([\w/-]+).rb}
         T.cast(changed_files.scan(filestub_regex), T::Array[T::Array[String]])