Improved instructions and added Zotero integration steps in both English and Chinese README files. Removed references to tests/README.md in setup scripts and deleted the obsolete tests/README.md file.
Add configuration, documentation, code of conduct, contributing guide, license, and README files. Set up .gitignore, coverage config, GitHub issue templates, pull request template, and initial source code, scripts, and tests for DeepLX optimized for Cloudflare Workers.