feat(clients): bind host rules to individual clients in subscriptions (#6620)

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.

frontend/package.json

@@ -29,7 +29,7 @@
   },
   "lint-staged": {
     "src/**/*.{ts,tsx}": [
-      "oxfmt",
+      "oxfmt --no-error-on-unmatched-pattern",
       "oxlint --fix"
     ]
   },