- LICENSE: full GNU AGPL-3.0 text
- CODE_OF_CONDUCT.md: Contributor Covenant 2.1
- SECURITY.md: responsible disclosure policy
- CHANGELOG.md: Keep a Changelog format
- .editorconfig: consistent code style across editors
- README.md: add Installation, Usage, Contributing, and License sections

Co-Authored-By: Claude Opus 4.8 <[email protected]>