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/ui/ChatViewModel.kt

@@ -26,6 +26,7 @@ class ChatViewModel(
     application: Application,
     val meshService: BluetoothMeshService
 ) : AndroidViewModel(application), BluetoothMeshDelegate {
+    private val debugManager by lazy { try { com.bitchat.android.ui.debug.DebugSettingsManager.getInstance() } catch (e: Exception) { null } }
 
     companion object {
         private const val TAG = "ChatViewModel"
@@ -150,6 +151,22 @@ class ChatViewModel(
         
         // Initialize session state monitoring
         initializeSessionStateMonitoring()
+
+        // Bridge DebugSettingsManager -> Chat messages when verbose logging is on
+        viewModelScope.launch {
+            com.bitchat.android.ui.debug.DebugSettingsManager.getInstance().debugMessages.collect { msgs ->
+                if (com.bitchat.android.ui.debug.DebugSettingsManager.getInstance().verboseLoggingEnabled.value) {
+                    // Only show debug logs in the Mesh chat timeline to avoid leaking into geohash chats
+                    val selectedLocation = state.selectedLocationChannel.value
+                    if (selectedLocation is com.bitchat.android.geohash.ChannelID.Mesh) {
+                        // Append only latest debug message as system message to avoid flooding
+                        msgs.lastOrNull()?.let { dm ->
+                            messageManager.addSystemMessage(dm.content)
+                        }
+                    }
+                }
+            }
+        }
         
         // Initialize location channel state
         nostrGeohashService.initializeLocationChannelState()
@@ -620,6 +637,13 @@ class ChatViewModel(
         }
     }
 
+    /**
+     * Get messages for a specific geohash timeline
+     */
+    fun getGeohashMessages(geohash: String): List<BitchatMessage> {
+        return nostrGeohashService.getGeohashMessages(geohash)
+    }
+
     /**
      * Get participant count for a specific geohash (5-minute activity window)
      */