fix(chat): send omit_messages=true on session.resume (issue #842) (#844)

The gateway replays the full transcript over a new socket on
session.resume unless omit_messages is set; mobile hydrates history via
REST in parallel, so the replay is redundant. When a reconnect lands
mid-stream, the replayed message gets a fresh UUID and dedup can't
collapse the 90% orphan with the 100% replay (different ids + content),
leaving a duplicate bubble. Desktop already sends omit_messages: true;
mirror that in both resume paths (ChatViewModel + NotificationReplyReceiver)
and pin it in the exact-map test verifies.

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

app/src/main/java/com/m57/hermescontrol/notification/NotificationReplyReceiver.kt

@@ -128,7 +128,7 @@ open class NotificationReplyReceiver : BroadcastReceiver() {
             HermesWsClient
                 .request(
                     WsMethods.SESSION_RESUME,
-                    mapOf("session_id" to storedSessionId),
+                    mapOf("session_id" to storedSessionId, "omit_messages" to true),
                     timeoutMs = REPLY_TIMEOUT_MS,
                 ).await() as? Map<*, *>
         val runtimeSessionId =

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

@@ -1952,7 +1952,7 @@ class ChatViewModel(
         viewModelScope.launch(ioDispatcher) {
             wsClient.send(
                 WsMethods.SESSION_RESUME,
-                mapOf("session_id" to sessionId),
+                mapOf("session_id" to sessionId, "omit_messages" to true),
                 onSent = { id ->
                     trackSessionRequest(
                         id = id,