feat(ws): consume gateway change events (issue #784) (#837)

* feat(ws): consume gateway change events (cron/sessions/platforms/pairing) for targeted refresh (issue #784)

* test(chat): complete catch-all request stub — kill frozen-collector capture race (slash-focus flake, 4645a2b CI)

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Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatWsEventReducer.kt

@@ -130,6 +130,9 @@ object ChatWsEventReducer {
 
             // ReactionEvent is handled by the ViewModel — purely cosmetic animation
             is WsEvent.ReactionEvent -> ReducerResult(state = state, streamingState = streamingState)
+
+            // Change events (issue #784) are consumed by their screens' ViewModels
+            is WsEvent.ChangeEvent -> ReducerResult(state = state, streamingState = streamingState)
         }
 
     // ── GatewayReady ──────────────────────────────────────────────────