Host rules applied per inbound only, so every client of an inbound got the same
subscription endpoints (#6618). A client can now be bound to one or more host
rules, and its raw, JSON and Clash subscriptions render only those hosts, in
either subscription order; an unbound client is unchanged. A binding whose hosts
are deleted, disabled or excluded from the format fails closed: the client gets
no links there but stays in traffic accounting. Host edits keep row ids, so
bindings survive them; nil leaves a stored binding alone and an empty list
clears it.
Adds a complete Slovak translation of every panel and bot string, registers
sk-SK in the language picker (a browser set to sk now lands on it instead of
English) and loads Ant Design's Slovak locale. The locale count in the READMEs,
docs and contributor guides moves from 13 to 14.