test: Copyright year changes

[danieljbruce]

experiment

[gemini-code-assist]

Code Review

This pull request introduces a script, bin/check-package-years.sh, to validate and ensure consistency of copyright years across package files, along with updates to various files to reflect the 2026 copyright year. The review identified that the find command in the script was overly restrictive, excluding files that it was intended to check, and suggested using process substitution to improve the robustness of the file processing loop.

[gemini-code-assist]

The find command has two issues that cause it to not check all relevant files:

1. Incomplete file types: It only checks *.ts and *.js files, but this PR also updates copyright headers in .cjs and .yaml files. These should be included for comprehensive checking.
2. Incorrect exclusions: It excludes several configuration files (e.g., .prettierrc.js, webpack.config.js). However, this PR updates copyrights in those very files, which implies they should be checked. These exclusions should be removed.

To ensure the script correctly validates all intended files, please update the find command.

Suggested change

	\( -name "*.ts" -o -name "*.js" \) \
	-not -path "*/node_modules/*" \
	-not -path "*/.git/*" \
	-not -path "*/dist/*" \
	-not -path "*/build/*" \
	-not -name "LICENSE" \
	-not -name "CHANGELOG.md" \
	-not -name "package.json" \
	-not -name "package-lock.json" \
	-not -name "pnpm-lock.yaml" \
	-not -name "prettier.config.js" \
	-not -name ".prettierrc.js" \
	-not -name ".eslintrc.js" \
	-not -name "webpack.config.js" \
	-not -name "rollup.config.js" \
	\( -name "*.ts" -o -name "*.js" -o -name "*.cjs" -o -name "*.yaml" \) \
	-not -path "*/node_modules/*" \
	-not -path "*/.git/*" \
	-not -path "*/dist/*" \
	-not -path "*/build/*" \
	-not -name "LICENSE" \
	-not -name "CHANGELOG.md" \
	-not -name "package.json" \
	-not -name "package-lock.json" \
	-not -name "pnpm-lock.yaml"

[gemini-code-assist]

The use of a temporary file can be avoided here. Using process substitution (< <(...)) is a cleaner and more robust way to pipe the output of find into the while loop. This avoids creating a file on disk and eliminates the need for manual cleanup with rm (line 95), which might not run if the script is interrupted.

This refactoring would look like:

  # ...
  first_year=""
  first_file=""

  # Find all files and pipe them to the inner loop
  while IFS= read -r file; do
    # ... (inner loop logic)
  done < <(find "$pkg_path" -type f ...)

  # No rm needed
# ...