- skills/project-bootstrap/README.md: new English README (modes,
triggers, prerequisites, layout, install, see-also).
- README.md: translated to English; both root READMEs cross-link.
- README.ru.md: original Russian preserved (renamed from README.md);
fixed broken `.wiki/source/repo-layout.md` link to point at the real
path under `.wiki/concepts/`.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
