docs(review round 17): bfloat16 CacheDType spelling, LMCACHE_LOG_LEVEL knob, restart-accounting caveat, systemd 0700 enforcement, fingerprint comment fix
docs(review): Security flat-layout purge safety, Architecture logical namespace -> model_name mapping, active-write registry replaces heuristic wording, real dedup test references
wiki: full documentation in EN/RU/ZH (10 pages x3) Home, Quick-Start, Architecture, Configuration, Persistence-and-Recovery, Storage-and-Eviction, Recipes-Integration, Security, Troubleshooting, FAQ. All commands as-is (no placeholders), all links verified internally. Recipes integration (KV_PERSIST=1) documented in all three languages.