Fix/nostr dm bottom sheet (#598)

* nostr in new dm sheets

* open sheet for nostr peers

app/src/main/java/com/bitchat/android/services/ConversationAliasResolver.kt

@@ -76,7 +76,12 @@ object ConversationAliasResolver {
             if (selected != null && keysToMerge.contains(selected)) {
                 state.setSelectedPrivateChatPeer(targetPeerID)
             }
+            
+            // Switch sheet peer if currently viewing an alias that got merged
+            val sheetPeer = state.getPrivateChatSheetPeerValue()
+            if (sheetPeer != null && keysToMerge.contains(sheetPeer)) {
+                state.setPrivateChatSheetPeer(targetPeerID)
+            }
         }
     }
 }
-

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

@@ -507,6 +507,10 @@ class ChatViewModel(
             ).also { canonical ->
                 if (canonical != state.getSelectedPrivateChatPeerValue()) {
                     privateChatManager.startPrivateChat(canonical, meshService)
+                    // If we're in the private chat sheet, update its active peer too
+                    if (state.getPrivateChatSheetPeerValue() != null) {
+                        showPrivateChatSheet(canonical)
+                    }
                 }
             }
             // Send private message
@@ -799,10 +803,6 @@ class ChatViewModel(
 
     fun hideMeshPeerList() {
         state.setShowMeshPeerList(false)
-        if (state.getPrivateChatSheetPeerValue() != null) {
-            endPrivateChat()
-        }
-        hidePrivateChatSheet()
     }
 
     fun showPrivateChatSheet(peerID: String) {

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

@@ -280,6 +280,7 @@ class GeohashViewModel(
     }
 
     fun displayNameForNostrPubkeyUI(pubkeyHex: String): String = repo.displayNameForNostrPubkeyUI(pubkeyHex)
+    fun displayNameForGeohashConversation(pubkeyHex: String, sourceGeohash: String): String = repo.displayNameForGeohashConversation(pubkeyHex, sourceGeohash)
 
     fun colorForNostrPubkey(pubkeyHex: String, isDark: Boolean): androidx.compose.ui.graphics.Color {
         val seed = "nostr:${pubkeyHex.lowercase()}"

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

@@ -29,6 +29,8 @@ import com.bitchat.android.core.ui.component.button.CloseButton
 import com.bitchat.android.core.ui.component.sheet.BitchatBottomSheet
 import com.bitchat.android.geohash.ChannelID
 import com.bitchat.android.ui.theme.BASE_FONT_SIZE
+import com.bitchat.android.nostr.GeohashAliasRegistry
+import com.bitchat.android.nostr.GeohashConversationRegistry
 
 
 /**
@@ -122,6 +124,7 @@ fun MeshPeerListSheet(
                                             peerNicknames.entries.firstOrNull { it.value == peerName }?.key
                                     if (peerID != null) {
                                             viewModel.showPrivateChatSheet(peerID)
+                                            onDismiss()
                                         }
                                     } else {
                                         // Regular channel switch
@@ -160,6 +163,7 @@ fun MeshPeerListSheet(
                                     viewModel = viewModel,
                                      onPrivateChatStart = { peerID ->
                                          viewModel.showPrivateChatSheet(peerID)
+                                         onDismiss()
                                      }
                                 )
                             }
@@ -785,11 +789,28 @@ fun PrivateChatSheet(
         viewModel.startPrivateChat(peerID)
     }
 
+    val isNostrPeer = peerID.startsWith("nostr_") || peerID.startsWith("nostr:")
+    
+    // Compute display name and title text reactively
     val displayName = peerNicknames[peerID] ?: peerID.take(12)
+    val titleText = remember(peerID, peerNicknames) {
+        if (isNostrPeer) {
+            val gh = GeohashConversationRegistry.get(peerID) ?: "geohash"
+            val fullPubkey = GeohashAliasRegistry.get(peerID) ?: ""
+            val name = if (fullPubkey.isNotEmpty()) {
+                viewModel.geohashViewModel.displayNameForGeohashConversation(fullPubkey, gh)
+            } else {
+                peerNicknames[peerID] ?: "unknown"
+            }
+            "#$gh/@$name"
+        } else {
+            peerNicknames[peerID] ?: peerID.take(12)
+        }
+    }
+
     val messages = privateChats[peerID] ?: emptyList()
     val isDirect = peerDirectMap[peerID] == true
     val isConnected = connectedPeers.contains(peerID) || isDirect
-    val isNostrPeer = peerID.startsWith("nostr_") || peerID.startsWith("nostr:")
     val sessionState = peerSessionStates[peerID]
     val fingerprint = peerFingerprints[peerID]
     val isFavorite = remember(favoritePeers, fingerprint) {
@@ -945,12 +966,12 @@ fun PrivateChatSheet(
                         }
 
                         Text(
-                            text = displayName,
+                            text = titleText,
                             style = MaterialTheme.typography.titleMedium.copy(
                                 fontWeight = FontWeight.Bold,
                                 fontFamily = FontFamily.Monospace
                             ),
-                            color = colorScheme.onSurface
+                            color = if (isNostrPeer) Color(0xFFFF9500) else colorScheme.onSurface
                         )
 
                         Row(

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

@@ -476,6 +476,12 @@ class PrivateChatManager(
                 unread.add(targetPeerID)
                 state.setUnreadPrivateMessages(unread)
             }
+
+            // If we're currently viewing one of the temp aliases in the sheet, switch to the permanent ID
+            val sheetPeer = state.getPrivateChatSheetPeerValue()
+            if (sheetPeer != null && tryMergeKeys.contains(sheetPeer)) {
+                state.setPrivateChatSheetPeer(targetPeerID)
+            }
         }
     }