Nip17 dms to extend the mesh (#313)

* favorite each other

* show favorites as system messsages

* wip show glove when offline but mayb edoesnt work

* send and receive works

* wip kinda works but no

* getting there

* kinda

* show offline peers in peer list

* kinda wonky but almost works

* fixes

* nostr user goes offline works

* nostr -> mesh works

* handoff works

* background message processing

* read works

* seen message store was missing

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

@@ -74,7 +74,7 @@ class MessageManager(private val state: ChatState) {
     }
     
     // MARK: - Private Message Management
-    
+
     fun addPrivateMessage(peerID: String, message: BitchatMessage) {
         val currentPrivateChats = state.getPrivateChatsValue().toMutableMap()
         if (!currentPrivateChats.containsKey(peerID)) {
@@ -94,6 +94,19 @@ class MessageManager(private val state: ChatState) {
             state.setUnreadPrivateMessages(currentUnread)
         }
     }
+
+    // Variant that does not mark unread (used when we know the message has been read already, e.g., persisted Nostr read store)
+    fun addPrivateMessageNoUnread(peerID: String, message: BitchatMessage) {
+        val currentPrivateChats = state.getPrivateChatsValue().toMutableMap()
+        if (!currentPrivateChats.containsKey(peerID)) {
+            currentPrivateChats[peerID] = mutableListOf()
+        }
+        val chatMessages = currentPrivateChats[peerID]?.toMutableList() ?: mutableListOf()
+        chatMessages.add(message)
+        chatMessages.sortBy { it.timestamp }
+        currentPrivateChats[peerID] = chatMessages
+        state.setPrivateChats(currentPrivateChats)
+    }
     
     fun clearPrivateMessages(peerID: String) {
         val updatedChats = state.getPrivateChatsValue().toMutableMap()