roentgen.git/docs/research, branch research

roentgen.git/docs/research, branch research xray client Document subscription formats and ALT runtime integration 2026-10-29T21:59:28+00:00 Andrew Guschin guschin@altlinux.org 2026-10-29T21:59:28+00:00 da2e0eef42d5d611b0125de17e467dbddf3d8d71 - Add the Roentgen domain glossary - Record research on 3x-ui subscriptions, runtime integration, and defaults

- Add the Roentgen domain glossary
- Record research on 3x-ui subscriptions, runtime integration, and defaults