Nostr refactor simplify (#390)

* fix bug

* geoDM receive works, send doesnt, and incoming message doesnt make sender appear in peer list

* fix nostr dm

* geohash dms work

* Geohash DM UI: stop mixing Nostr DM temp chats into mesh offline list; ensure geohash DM senders are added to geohash people list only. Removed nostr_* sidebar append in PeopleSection; kept 64-hex mesh offline favorites. Verified build.

* refactor

* nice

* works

* merging nostr -> mesh works

* tripple click to delete all

* fix sidebar icon

* remove hash

* dms have correct recipient

* works

* wip unread badge

* geohash dms wip

* dms work

app/src/main/java/com/bitchat/android/ui/ChatState.kt

@@ -124,6 +124,9 @@ class ChatState {
     // Geohash people state (iOS-compatible)
     private val _geohashPeople = MutableLiveData<List<GeoPerson>>(emptyList())
     val geohashPeople: LiveData<List<GeoPerson>> = _geohashPeople
+    // For background thread updates by repositories/handlers in their own scopes
+    val geohashPeopleMutable: MutableLiveData<List<GeoPerson>> get() = _geohashPeople
+    
     
     private val _teleportedGeo = MutableLiveData<Set<String>>(emptySet())
     val teleportedGeo: LiveData<Set<String>> = _teleportedGeo
@@ -155,6 +158,16 @@ class ChatState {
     fun getSelectedPrivateChatPeerValue() = _selectedPrivateChatPeer.value
     fun getUnreadPrivateMessagesValue() = _unreadPrivateMessages.value ?: emptySet()
     fun getJoinedChannelsValue() = _joinedChannels.value ?: emptySet()
+    // Thread-safe posting helpers for background updates
+    fun postGeohashPeople(people: List<GeoPerson>) {
+        _geohashPeople.postValue(people)
+    }
+
+    fun postGeohashParticipantCounts(counts: Map<String, Int>) {
+        _geohashParticipantCounts.postValue(counts)
+    }
+
+
     fun getCurrentChannelValue() = _currentChannel.value
     fun getChannelMessagesValue() = _channelMessages.value ?: emptyMap()
     fun getUnreadChannelMessagesValue() = _unreadChannelMessages.value ?: emptyMap()
@@ -183,6 +196,10 @@ class ChatState {
         _connectedPeers.value = peers
     }
     
+    fun postTeleportedGeo(teleported: Set<String>) {
+        _teleportedGeo.postValue(teleported)
+    }
+
     fun setNickname(nickname: String) {
         _nickname.value = nickname
     }