Revert "Refactor repeater status screen and settings screen; add GPS toggle"

This reverts commit e21f3106d0.

lib/services/repeater_command_service.dart

@@ -25,6 +25,14 @@ class RepeaterCommandService {
     Function(int)? onAttempt,
     int retries = maxRetries,
   }) async {
+    final repeaterKey = repeater.publicKeyHex;
+    final hasPending = _pendingCommands.keys.any(
+      (id) => id.startsWith(repeaterKey),
+    );
+    if (hasPending) {
+      throw Exception('Another command is still awaiting a response.');
+    }
+
     final attemptCount = retries < 1 ? 1 : retries;
     final selection = await _connector.preparePathForContactSend(repeater);
 
@@ -54,14 +62,14 @@ class RepeaterCommandService {
     int attempt,
   ) async {
     final repeaterKey = repeater.publicKeyHex;
-    final prefix = _nextPrefixToken();
-    final commandId = '${repeaterKey}_$prefix';
+    final commandId = '${repeaterKey}_${DateTime.now().millisecondsSinceEpoch}';
     final completer = Completer<String>();
     _pendingCommands[commandId] = completer;
-    _commandPrefixes[commandId] = prefix;
-    _pendingByPrefix[prefix] = commandId;
 
     try {
+      final prefix = _nextPrefixToken();
+      _commandPrefixes[commandId] = prefix;
+      _pendingByPrefix[prefix] = commandId;
       final framedCommand = '$prefix$command';
       final pathLengthValue = selection.useFlood ? -1 : selection.hopCount;
       final timestampSeconds = DateTime.now().millisecondsSinceEpoch ~/ 1000;