The lx feature docs had drifted: README (en/ru) and docs/lx-config.md still said
"currently XHTTP + AWG2" and covered only SPEC 002/003/009 — the observability
layer (SPEC 014-018) and round_robin load balancing (SPEC 019) were undocumented
in the lx overview, and urltest.md still described the pre-rc.15 domain behaviour.
- docs/lx-config.md: new "## 3. round_robin load balancing" (mode/balancer,
pool/pool_tolerance/sticky_hash, ["none"] sentinel + badjson-[] caveat, slot-hash
binding, example, status) and "## 4. Observability (CommandClient extensions)"
(URLTestOutbound/GetRules/GetGroups/GetOutbounds/GetPool/SubscribeDNSQueries +
Connection.detourList, all behind with_lx_command); Validate&build -> ## 5.
- README.md / README.ru.md: broaden the stale "XHTTP + AWG2" framing; add feature
rows for observability and round_robin with honest status.
- docs/configuration/outbound/urltest.md: reconcile sticky_hash "domain" with the
rc.15 fix — domain reads metadata.Domain (survives domain->IP resolve), so it
works for normal sniffed domain traffic, not only literal-IP destinations; the
warning is reframed (domain works; dest_ip is an alternative).
Docs-only; no code change.