Debug button (#377)

* feat(debug): add DebugSettingsManager + DebugSettingsSheet scaffold and AboutSheet entry; groundwork for verbose logging, GATT controls, relay stats, device/scan views

* fix(debug): wire debug sheet launch via onShowDebug in AboutSheet from ChatScreen; add public start/stop server/client methods}

* fix(about): remove misplaced debug item block inside PoW section; keep debug launcher managed by ChatScreen only

* feat(debug): wire DebugSettingsSheet role switches to explicit startServer/stopServer and startClient/stopClient; expose role controls + disconnectAll on BluetoothConnectionManager; fix syntax error; build passes

* feat(debug): add connect/disconnect helpers; wire DebugSettingsSheet connect/disconnect actions to BluetoothConnectionManager

* feat(debug): add debug settings button at bottom of AboutSheet; wire onShowDebug callback to open DebugSettingsSheet from ChatScreen

* feat(debug): wire verbose logging into chat view via DebugSettingsManager; add rolling relay stats; push connected devices and scan results; ensure GATT role stop closes connections; log incoming packets and relay events; add UI polling for devices; build passes

* chore(debug-branch): remove unrelated files that were mistakenly added in first commit; keep only intended debug settings changes

* fix(chat): prevent mesh→geohash leak

Root cause:
- DebugSettingsManager→chat bridge appended system logs to the global timeline regardless of active channel
- MeshDelegateHandler added public mesh messages to UI unconditionally

Fixes:
- Only inject debug system messages when selected location channel is Mesh
- Only add public mesh messages to UI when Mesh is selected (still send notifications)

Build: ./gradlew assembleDebug
}

* fix(timeline): restore message persistence across channel switches

Root cause:
- NostrGeohashService.switchLocationChannel() called messageManager.clearMessages()
  which wiped ALL messages (mesh + debug + geohash) from main timeline
- Geohash events were adding to main timeline, causing cross-contamination

Fixes:
- Remove messageManager.clearMessages() from channel switching
- ChatScreen displayMessages now routes to separate storage:
  - Mesh: messages (main timeline, includes debug logs when Mesh selected)
  - Geohash: viewModel.getGeohashMessages(geohash) from separate history
  - Private: privateChats[peerID]
  - Channels: channelMessages[channel]
- Geohash events no longer add to main timeline, only to geohash history
- Mesh messages always stored to preserve history when switching away

Result: Each chat type has persistent separate storage, no message loss

* Debug/relay logs: use MessageType names; include device route in verbose packet logs.

* Verbose device-peer assignment and connection/disconnection logs with peerId, deviceId, nickname; packet relay log uses MessageType names.}

* Debug logs API: include nickname and deviceId for incoming/relay; update callers.}

* Fix compile: import MessageType; correct debug manager API usage and remove stray insertion; build.}

* Respect relay toggle; helper to log relay with deviceId.}

* PacketRelayManager: add relay toggle and unified logging helper; clean file header comments; build fixes.}

* changes

* Geohash local echo: do not add to mesh timeline; rely on geohash history and ChatScreen display for location channels.

* persisting

* persist debug settings

* gitignore

* gatt server / client controls

* debugger

* max connection settings and graph

* more graph

* better logging

* refactor logging

app/src/main/java/com/bitchat/android/nostr/NostrGeohashService.kt

@@ -258,11 +258,12 @@ class NostrGeohashService(
                     powDifficulty = if (powSettingsLocal.enabled) powSettingsLocal.difficulty else null
                 )
                 
-                // Store and display the message immediately
+                // Store immediately; UI will display from geohash history (not main mesh timeline)
                 storeGeohashMessage(channel.geohash, localMessage)
-                messageManager.addMessage(localMessage)
+                // IMPORTANT: Do not add to main mesh timeline to avoid duplication in mesh chat view
+                // messageManager.addMessage(localMessage)
                 
-                Log.d(TAG, "📝 Added message immediately with temp ID: $tempMessageId")
+                Log.d(TAG, "📝 Added geohash local echo with temp ID: $tempMessageId (not shown in mesh timeline)")
                 
                 // Check if PoW is enabled before starting animation
                 val powSettings = PoWPreferenceManager.getCurrentSettings()
@@ -726,6 +727,13 @@ class NostrGeohashService(
             messageManager.addMessage(message)
         }
     }
+
+    /**
+     * Get stored messages for a geohash without mutating UI state
+     */
+    fun getGeohashMessages(geohash: String): List<BitchatMessage> {
+        return geohashMessageHistory[geohash]?.toList() ?: emptyList()
+    }
     
     /**
      * Clear geohash message history
@@ -986,9 +994,8 @@ class NostrGeohashService(
     private fun switchLocationChannel(channel: com.bitchat.android.geohash.ChannelID?) {
         // STEP 1: Immediate UI updates (synchronous, no blocking)
         try {
-            // Clear all displayed messages and load stored messages for the new channel
-            messageManager.clearMessages()
-            Log.d(TAG, "🗑️ Cleared all messages for channel switch")
+            // NOTE: Don't clear messages here - let ChatScreen's displayMessages logic handle what to show
+            // This preserves mesh message history when switching between views
             
             when (channel) {
                 is com.bitchat.android.geohash.ChannelID.Mesh -> {
@@ -1013,9 +1020,7 @@ class NostrGeohashService(
                     // Clear notifications for this geohash since user is now viewing it
                     notificationManager.clearNotificationsForGeohash(channel.channel.geohash)
                     // Note: Don't clear geoNicknames - they contain cached nicknames for all geohashes
-                    
-                    // Load stored messages for this geohash immediately
-                    loadGeohashMessages(channel.channel.geohash)
+                    // Note: Don't load messages here - ChatScreen will get them via getGeohashMessages()
                     
                     // Immediate self-registration for instant UI feedback
                     try {
@@ -1298,16 +1303,8 @@ class NostrGeohashService(
             // Store in geohash history for persistence across channel switches
             storeGeohashMessage(geohash, message)
             
-            // CRITICAL BUG FIX: Add to message timeline if we're viewing this geohash OR if it matches our selected location channel
-            // This prevents messages from being lost during channel switching race conditions
-            val selectedLocationChannel = state.selectedLocationChannel.value
-            val shouldShowMessage = currentGeohash == geohash || 
-                (selectedLocationChannel is com.bitchat.android.geohash.ChannelID.Location && 
-                 selectedLocationChannel.channel.geohash == geohash)
-            
-            if (shouldShowMessage) {
-                withContext(Dispatchers.Main) { messageManager.addMessage(message) }
-            }
+            // NOTE: Don't add to main message timeline here - ChatScreen will display geohash messages
+            // from the separate geohash history via getGeohashMessages()
             
             // NOTIFICATION LOGIC: Check for mentions and first messages
             checkAndTriggerGeohashNotifications(geohash, senderName, content, message)