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/AboutSheet.kt

@@ -23,6 +23,7 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.bitchat.android.nostr.NostrProofOfWork
 import com.bitchat.android.nostr.PoWPreferenceManager
+import com.bitchat.android.ui.debug.DebugSettingsSheet
 
 /**
  * About Sheet for bitchat app information
@@ -33,6 +34,7 @@ import com.bitchat.android.nostr.PoWPreferenceManager
 fun AboutSheet(
     isPresented: Boolean,
     onDismiss: () -> Unit,
+    onShowDebug: (() -> Unit)? = null,
     modifier: Modifier = Modifier
 ) {
     val context = LocalContext.current
@@ -47,6 +49,7 @@ fun AboutSheet(
     }
     
     // Bottom sheet state
+
     val sheetState = rememberModalBottomSheetState(
         skipPartiallyExpanded = false
     )
@@ -422,6 +425,30 @@ fun AboutSheet(
                     }
                 }
                 
+                // Debug settings button
+                item {
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalAlignment = Alignment.CenterHorizontally,
+                        verticalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        // Debug button styled to match the app aesthetic
+                        TextButton(
+                            onClick = { onShowDebug?.invoke() },
+                            colors = ButtonDefaults.textButtonColors(
+                                contentColor = colorScheme.onSurface.copy(alpha = 0.6f)
+                            )
+                        ) {
+                            Text(
+                                text = "debug settings",
+                                fontSize = 11.sp,
+                                fontFamily = FontFamily.Monospace,
+                                color = colorScheme.onSurface.copy(alpha = 0.6f)
+                            )
+                        }
+                    }
+                }
+
                 // Version and footer space
                 item {
                     Column(