Introduced a new eslint.config.js using neostandard and added related devDependencies. Updated codebase for consistent formatting, spacing, and function declarations. Minor refactoring and cleanup across multiple files to improve readability and maintain code style compliance.
Introduces the napcat-test package with initial SHA-1 stream tests, configuration files, and scripts for running tests. Updates root package.json to include test commands and Vitest dependencies, and adds Vitest configuration at the root and package level for test environment setup.
