Cleanup: drop RUNNING.md/results/CONTRIBUTING refs, HOTSPLIT_HOT_GIB in hotsplit commands (en/ru/zh)
wiki: trust boundary, honest rollback, clean-cache, WARN semantics (EN/RU/ZH)
wiki: fix audit findings (VRAM arithmetic, mandatory params, Debian, honest empty-budget semantics)
wiki: EN/RU/ZH