The lifecycle phase at which a parameter is resolved. Tells resolvers which
data is available on the InvocationContext and gates attributes that only
make sense in some scopes.
HttpBoot — HTTP handler constructor (runs once at boot; no request
available; services only).
HttpRequest — HTTP handler __invoke (per-request; full request +
PerRequestActorScope available).
WsConnection — WebSocketHandler constructor (per-connection; full
request + WebSocketContext available).