diff --git a/Fly App/backup_pocketbase_app/login_page.dart b/Fly App/backup_pocketbase_app/login_page.dart
deleted file mode 100644
index a6baace..0000000
--- a/Fly App/backup_pocketbase_app/login_page.dart	
+++ /dev/null
@@ -1,146 +0,0 @@
-import 'package:flutter/material.dart';
-
-import 'pb_service.dart';
-
-class LoginPage extends StatefulWidget {
-  const LoginPage({super.key, required this.onSignedIn});
-
-  final VoidCallback onSignedIn;
-
-  @override
-  State<LoginPage> createState() => _LoginPageState();
-}
-
-class _LoginPageState extends State<LoginPage> {
-  late final TextEditingController _server =
-      TextEditingController(text: pb.defaultBaseUrl);
-  final TextEditingController _email =
-      TextEditingController(text: 'pilot@dji.local');
-  final TextEditingController _password = TextEditingController();
-  final TextEditingController _device =
-      TextEditingController(text: 'phone');
-
-  bool _busy = false;
-  String? _error;
-
-  Future<void> _signIn() async {
-    setState(() {
-      _busy = true;
-      _error = null;
-    });
-    try {
-      await pb.signIn(
-        baseUrl: _server.text,
-        email: _email.text,
-        password: _password.text,
-        deviceId: _device.text,
-      );
-      widget.onSignedIn();
-    } catch (e) {
-      setState(() => _error = _friendly(e));
-    } finally {
-      if (mounted) setState(() => _busy = false);
-    }
-  }
-
-  String _friendly(Object e) {
-    final String s = e.toString();
-    if (s.contains('Failed host lookup') || s.contains('SocketException')) {
-      return 'Cannot reach the server. Check the address and that PocketBase is running.';
-    }
-    if (s.contains('Failed to authenticate')) return 'Invalid email or password.';
-    return s;
-  }
-
-  @override
-  void dispose() {
-    _server.dispose();
-    _email.dispose();
-    _password.dispose();
-    _device.dispose();
-    super.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      body: Center(
-        child: SingleChildScrollView(
-          padding: const EdgeInsets.all(24),
-          child: ConstrainedBox(
-            constraints: const BoxConstraints(maxWidth: 380),
-            child: Column(
-              mainAxisSize: MainAxisSize.min,
-              crossAxisAlignment: CrossAxisAlignment.stretch,
-              children: <Widget>[
-                Icon(Icons.flight_takeoff,
-                    size: 56, color: Theme.of(context).colorScheme.primary),
-                const SizedBox(height: 12),
-                Text('DJI MSDK Sample',
-                    textAlign: TextAlign.center,
-                    style: Theme.of(context).textTheme.headlineSmall),
-                Text('Sign in to the PocketBase backend',
-                    textAlign: TextAlign.center,
-                    style: TextStyle(color: Colors.grey.shade600)),
-                const SizedBox(height: 24),
-                TextField(
-                  controller: _server,
-                  keyboardType: TextInputType.url,
-                  decoration: const InputDecoration(
-                    labelText: 'Server', hintText: '10.2.1.101:8090',
-                    border: OutlineInputBorder(), prefixIcon: Icon(Icons.dns),
-                  ),
-                ),
-                const SizedBox(height: 12),
-                TextField(
-                  controller: _email,
-                  keyboardType: TextInputType.emailAddress,
-                  autofillHints: const <String>[AutofillHints.username],
-                  decoration: const InputDecoration(
-                    labelText: 'Email', border: OutlineInputBorder(),
-                    prefixIcon: Icon(Icons.person),
-                  ),
-                ),
-                const SizedBox(height: 12),
-                TextField(
-                  controller: _password,
-                  obscureText: true,
-                  autofillHints: const <String>[AutofillHints.password],
-                  onSubmitted: (_) => _busy ? null : _signIn(),
-                  decoration: const InputDecoration(
-                    labelText: 'Password', border: OutlineInputBorder(),
-                    prefixIcon: Icon(Icons.lock),
-                  ),
-                ),
-                const SizedBox(height: 12),
-                TextField(
-                  controller: _device,
-                  decoration: const InputDecoration(
-                    labelText: 'Device id', border: OutlineInputBorder(),
-                    prefixIcon: Icon(Icons.smartphone),
-                  ),
-                ),
-                if (_error != null) ...<Widget>[
-                  const SizedBox(height: 12),
-                  Text(_error!, style: const TextStyle(color: Colors.red)),
-                ],
-                const SizedBox(height: 20),
-                FilledButton(
-                  onPressed: _busy ? null : _signIn,
-                  child: Padding(
-                    padding: const EdgeInsets.symmetric(vertical: 12),
-                    child: _busy
-                        ? const SizedBox(
-                            height: 20, width: 20,
-                            child: CircularProgressIndicator(strokeWidth: 2))
-                        : const Text('Sign in'),
-                  ),
-                ),
-              ],
-            ),
-          ),
-        ),
-      ),
-    );
-  }
-}
diff --git a/Fly App/backup_pocketbase_app/main_pocketbase.dart b/Fly App/backup_pocketbase_app/main_pocketbase.dart
deleted file mode 100644
index b203958..0000000
--- a/Fly App/backup_pocketbase_app/main_pocketbase.dart	
+++ /dev/null
@@ -1,424 +0,0 @@
-import 'dart:async';
-
-import 'package:flutter/material.dart';
-
-import 'dji_service.dart';
-import 'login_page.dart';
-import 'pb_service.dart';
-
-Future<void> main() async {
-  WidgetsFlutterBinding.ensureInitialized();
-  await pb.init();
-  runApp(const DjiSampleApp());
-}
-
-class DjiSampleApp extends StatelessWidget {
-  const DjiSampleApp({super.key});
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'DJI MSDK Sample',
-      theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFF1565C0)),
-        useMaterial3: true,
-      ),
-      home: const AuthGate(),
-    );
-  }
-}
-
-/// Shows the login screen until the user is authenticated with PocketBase.
-class AuthGate extends StatefulWidget {
-  const AuthGate({super.key});
-
-  @override
-  State<AuthGate> createState() => _AuthGateState();
-}
-
-class _AuthGateState extends State<AuthGate> {
-  StreamSubscription<BackendStatus>? _sub;
-
-  @override
-  void initState() {
-    super.initState();
-    _sub = pb.status.listen((_) {
-      if (mounted) setState(() {});
-    });
-  }
-
-  @override
-  void dispose() {
-    _sub?.cancel();
-    super.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    if (pb.isAuthed) {
-      return const HomePage();
-    }
-    return LoginPage(onSignedIn: () => setState(() {}));
-  }
-}
-
-enum RegistrationState { idle, registering, success, failed }
-
-class HomePage extends StatefulWidget {
-  const HomePage({super.key});
-
-  @override
-  State<HomePage> createState() => _HomePageState();
-}
-
-class _HomePageState extends State<HomePage> {
-  final DjiService _dji = DjiService();
-  StreamSubscription<Map<String, dynamic>>? _sub;
-  StreamSubscription<BackendStatus>? _backendSub;
-  BackendStatus _backend = BackendStatus.online;
-
-  String _sdkVersion = '…';
-  RegistrationState _registration = RegistrationState.idle;
-  String? _registrationError;
-
-  bool _connected = false;
-  String? _model;
-
-  int? _satellites;
-  bool? _isFlying;
-  String? _flightMode;
-  double? _altitude;
-  double? _latitude;
-  double? _longitude;
-  int? _batteryPercent;
-
-  @override
-  void initState() {
-    super.initState();
-    _backend = pb.currentStatus;
-    // Route server interactions through PocketBase.
-    pb.onCommand = _handleServerCommand;
-    pb.stateProvider = _currentState;
-    _backendSub = pb.status.listen((BackendStatus s) {
-      if (mounted) setState(() => _backend = s);
-    });
-    _init();
-  }
-
-  Future<void> _init() async {
-    _sub = _dji.events().listen(_onEvent, onError: (Object e) {
-      _snack('Event channel error: $e');
-    });
-    try {
-      final String version = await _dji.getSdkVersion();
-      if (mounted) setState(() => _sdkVersion = version);
-    } catch (_) {
-      if (mounted) setState(() => _sdkVersion = 'unavailable');
-    }
-  }
-
-  void _onEvent(Map<String, dynamic> event) {
-    if (!mounted) return;
-    // Persist every event to PocketBase (telemetry is throttled inside).
-    pb.onEvent(event);
-    switch (event['type'] as String?) {
-      case 'registration':
-        setState(() {
-          switch (event['state'] as String?) {
-            case 'registering':
-              _registration = RegistrationState.registering;
-              _registrationError = null;
-              break;
-            case 'success':
-              _registration = RegistrationState.success;
-              break;
-            case 'failed':
-              _registration = RegistrationState.failed;
-              _registrationError = event['error'] as String?;
-              break;
-          }
-        });
-        break;
-      case 'connection':
-        setState(() {
-          _connected = event['connected'] as bool? ?? false;
-          _model = event['model'] as String?;
-          if (!_connected) _clearTelemetry();
-        });
-        break;
-      case 'telemetry':
-        setState(() {
-          _satellites = event['satelliteCount'] as int?;
-          _isFlying = event['isFlying'] as bool?;
-          _flightMode = event['flightMode'] as String?;
-          _altitude = (event['altitude'] as num?)?.toDouble();
-          _latitude = (event['latitude'] as num?)?.toDouble();
-          _longitude = (event['longitude'] as num?)?.toDouble();
-        });
-        break;
-      case 'battery':
-        setState(() => _batteryPercent = event['percent'] as int?);
-        break;
-    }
-  }
-
-  void _clearTelemetry() {
-    _satellites = null;
-    _isFlying = null;
-    _flightMode = null;
-    _altitude = null;
-    _latitude = null;
-    _longitude = null;
-    _batteryPercent = null;
-  }
-
-  /// Current app state shared with PocketBase for the device presence record.
-  Map<String, dynamic> _currentState() => <String, dynamic>{
-        'connected': _connected,
-        'model': _model ?? '',
-        'registration': _registrationWire(),
-      };
-
-  String _registrationWire() {
-    switch (_registration) {
-      case RegistrationState.success:
-        return 'success';
-      case RegistrationState.registering:
-        return 'registering';
-      case RegistrationState.failed:
-        return 'failed';
-      case RegistrationState.idle:
-        return 'not registered';
-    }
-  }
-
-  Future<void> _register() async {
-    try {
-      await _dji.registerApp();
-    } catch (e) {
-      _snack('registerApp failed: $e');
-    }
-  }
-
-  Future<void> _connect() async {
-    try {
-      final bool started = await _dji.startConnection();
-      _snack(started ? 'Scanning for product…' : 'Could not start connection');
-    } catch (e) {
-      _snack('startConnection failed: $e');
-    }
-  }
-
-  void _handleServerCommand(String command, Map<String, dynamic> payload) {
-    switch (command) {
-      case 'registerApp':
-        _register();
-        break;
-      case 'startConnection':
-        _connect();
-        break;
-      case 'stopConnection':
-        _dji.stopConnection();
-        break;
-      default:
-        _snack('Unknown server command: $command');
-        return;
-    }
-    _snack('Server command: $command');
-  }
-
-  Future<void> _logout() async {
-    await pb.signOut();
-    if (mounted) {
-      Navigator.of(context).pushAndRemoveUntil(
-        MaterialPageRoute<void>(
-          builder: (_) => const AuthGate(),
-        ),
-        (Route<dynamic> route) => false,
-      );
-    }
-  }
-
-  void _snack(String msg) {
-    if (!mounted) return;
-    ScaffoldMessenger.of(context)
-      ..clearSnackBars()
-      ..showSnackBar(SnackBar(content: Text(msg)));
-  }
-
-  @override
-  void dispose() {
-    _sub?.cancel();
-    _backendSub?.cancel();
-    super.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      appBar: AppBar(
-        title: const Text('DJI MSDK Sample'),
-        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        actions: <Widget>[
-          IconButton(
-            tooltip: 'Log out',
-            onPressed: _logout,
-            icon: const Icon(Icons.logout),
-          ),
-        ],
-      ),
-      body: ListView(
-        padding: const EdgeInsets.all(16),
-        children: <Widget>[
-          _backendCard(),
-          const SizedBox(height: 12),
-          _registrationCard(),
-          const SizedBox(height: 12),
-          _connectionCard(),
-          const SizedBox(height: 12),
-          _telemetryCard(),
-        ],
-      ),
-    );
-  }
-
-  Widget _backendCard() {
-    final (Color color, String label) = switch (_backend) {
-      BackendStatus.online => (Colors.green, 'Streaming to PocketBase'),
-      BackendStatus.signingIn => (Colors.orange, 'Connecting…'),
-      BackendStatus.error => (Colors.red, 'Backend error'),
-      BackendStatus.signedOut => (Colors.grey, 'Signed out'),
-    };
-    return Card(
-      child: Padding(
-        padding: const EdgeInsets.all(16),
-        child: Row(
-          children: <Widget>[
-            Icon(Icons.cloud_done, color: color),
-            const SizedBox(width: 10),
-            Expanded(
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                children: <Widget>[
-                  Text(label, style: Theme.of(context).textTheme.titleMedium),
-                  const SizedBox(height: 2),
-                  Text('${pb.userEmail} · device "${pb.deviceId}"',
-                      style: const TextStyle(color: Colors.black54, fontSize: 12)),
-                ],
-              ),
-            ),
-            TextButton.icon(
-              onPressed: _logout,
-              icon: const Icon(Icons.logout),
-              label: const Text('Log out'),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _registrationCard() {
-    final (Color color, IconData icon, String label) = switch (_registration) {
-      RegistrationState.idle => (Colors.grey, Icons.help_outline, 'Not registered'),
-      RegistrationState.registering => (Colors.orange, Icons.sync, 'Registering…'),
-      RegistrationState.success => (Colors.green, Icons.verified, 'Registered'),
-      RegistrationState.failed => (Colors.red, Icons.error_outline, 'Registration failed'),
-    };
-
-    return Card(
-      child: Padding(
-        padding: const EdgeInsets.all(16),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: <Widget>[
-            Row(
-              children: <Widget>[
-                Icon(icon, color: color),
-                const SizedBox(width: 8),
-                Text(label, style: Theme.of(context).textTheme.titleMedium),
-              ],
-            ),
-            const SizedBox(height: 4),
-            Text('SDK version: $_sdkVersion'),
-            if (_registrationError != null) ...<Widget>[
-              const SizedBox(height: 4),
-              Text(_registrationError!, style: const TextStyle(color: Colors.red)),
-            ],
-            const SizedBox(height: 12),
-            FilledButton.icon(
-              onPressed: _registration == RegistrationState.registering ? null : _register,
-              icon: const Icon(Icons.app_registration),
-              label: const Text('Register app'),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _connectionCard() {
-    return Card(
-      child: Padding(
-        padding: const EdgeInsets.all(16),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: <Widget>[
-            Row(
-              children: <Widget>[
-                Icon(_connected ? Icons.link : Icons.link_off,
-                    color: _connected ? Colors.green : Colors.grey),
-                const SizedBox(width: 8),
-                Text(_connected ? 'Product connected' : 'No product',
-                    style: Theme.of(context).textTheme.titleMedium),
-              ],
-            ),
-            const SizedBox(height: 4),
-            Text('Model: ${_model ?? '—'}'),
-            const SizedBox(height: 12),
-            OutlinedButton.icon(
-              onPressed: _registration == RegistrationState.success ? _connect : null,
-              icon: const Icon(Icons.usb),
-              label: const Text('Connect to product'),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _telemetryCard() {
-    return Card(
-      child: Padding(
-        padding: const EdgeInsets.all(16),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: <Widget>[
-            Text('Telemetry', style: Theme.of(context).textTheme.titleMedium),
-            const Divider(),
-            _row('Battery', _batteryPercent == null ? '—' : '$_batteryPercent%'),
-            _row('GPS satellites', _satellites?.toString() ?? '—'),
-            _row('Flight mode', _flightMode ?? '—'),
-            _row('Flying', _isFlying == null ? '—' : (_isFlying! ? 'yes' : 'no')),
-            _row('Altitude', _altitude == null ? '—' : '${_altitude!.toStringAsFixed(1)} m'),
-            _row('Latitude', _latitude?.toStringAsFixed(6) ?? '—'),
-            _row('Longitude', _longitude?.toStringAsFixed(6) ?? '—'),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _row(String label, String value) {
-    return Padding(
-      padding: const EdgeInsets.symmetric(vertical: 4),
-      child: Row(
-        mainAxisAlignment: MainAxisAlignment.spaceBetween,
-        children: <Widget>[
-          Text(label, style: const TextStyle(color: Colors.black54)),
-          Text(value, style: const TextStyle(fontWeight: FontWeight.w600)),
-        ],
-      ),
-    );
-  }
-}
diff --git a/Fly App/backup_pocketbase_app/pb_service.dart b/Fly App/backup_pocketbase_app/pb_service.dart
deleted file mode 100644
index b6dd9c2..0000000
--- a/Fly App/backup_pocketbase_app/pb_service.dart	
+++ /dev/null
@@ -1,230 +0,0 @@
-import 'dart:async';
-
-import 'package:pocketbase/pocketbase.dart';
-import 'package:shared_preferences/shared_preferences.dart';
-
-enum BackendStatus { signedOut, signingIn, online, error }
-
-/// PocketBase-backed service: authentication, telemetry persistence, device
-/// presence, and inbound command subscription. A single global [pb] instance is
-/// shared across the app.
-class PbService {
-  PocketBase? _pb;
-  SharedPreferences? _prefs;
-  String _deviceId = 'phone';
-
-  Timer? _heartbeat;
-  String? _devicesRecordId;
-  UnsubscribeFunc? _cmdUnsub;
-  DateTime _lastTelemetry = DateTime.fromMillisecondsSinceEpoch(0);
-
-  /// Called when a command record targeting this device is created.
-  void Function(String command, Map<String, dynamic> payload)? onCommand;
-
-  /// Returns the app's current state for the device presence record.
-  /// Expected keys: connected (bool), model (String), registration (String).
-  Map<String, dynamic> Function()? stateProvider;
-
-  final StreamController<BackendStatus> _statusController =
-      StreamController<BackendStatus>.broadcast();
-  Stream<BackendStatus> get status => _statusController.stream;
-
-  BackendStatus _status = BackendStatus.signedOut;
-  BackendStatus get currentStatus => _status;
-
-  bool get isAuthed => _pb?.authStore.isValid ?? false;
-  String get userEmail => _pb?.authStore.record?.getStringValue('email') ?? '';
-  String get deviceId => _deviceId;
-  String get baseUrl => _pb?.baseURL ?? '';
-
-  void _setStatus(BackendStatus s) {
-    _status = s;
-    if (!_statusController.isClosed) _statusController.add(s);
-  }
-
-  /// Restores a persisted session (if any) on app start.
-  Future<void> init() async {
-    _prefs = await SharedPreferences.getInstance();
-    _deviceId = _prefs!.getString('pb_device') ?? 'phone';
-    final String? url = _prefs!.getString('pb_url');
-    final String? auth = _prefs!.getString('pb_auth');
-    if (url != null && auth != null && auth.isNotEmpty) {
-      _pb = _build(url, auth);
-      if (_pb!.authStore.isValid) {
-        _setStatus(BackendStatus.online);
-        await _afterAuth();
-      }
-    }
-  }
-
-  PocketBase _build(String url, String? initialAuth) {
-    final AsyncAuthStore store = AsyncAuthStore(
-      save: (String data) async => _prefs?.setString('pb_auth', data),
-      clear: () async => _prefs?.remove('pb_auth'),
-      initial: initialAuth,
-    );
-    return PocketBase(url, authStore: store);
-  }
-
-  String get defaultBaseUrl => _prefs?.getString('pb_url') ?? 'http://10.2.1.101:8090';
-
-  Future<void> signIn({
-    required String baseUrl,
-    required String email,
-    required String password,
-    String deviceId = 'phone',
-  }) async {
-    _deviceId = deviceId.trim().isEmpty ? 'phone' : deviceId.trim();
-    final String url = _normalize(baseUrl);
-    _setStatus(BackendStatus.signingIn);
-    try {
-      final PocketBase pb = _build(url, null);
-      await pb.collection('users').authWithPassword(email.trim(), password);
-      _pb = pb;
-      await _prefs?.setString('pb_url', url);
-      await _prefs?.setString('pb_device', _deviceId);
-      _setStatus(BackendStatus.online);
-      await _afterAuth();
-    } catch (e) {
-      _setStatus(BackendStatus.error);
-      rethrow;
-    }
-  }
-
-  Future<void> signOut() async {
-    _heartbeat?.cancel();
-    _heartbeat = null;
-    try {
-      await _upsertDevice(online: false);
-    } catch (_) {}
-    try {
-      await _cmdUnsub?.call();
-    } catch (_) {}
-    _cmdUnsub = null;
-    _devicesRecordId = null;
-    _pb?.authStore.clear();
-    _setStatus(BackendStatus.signedOut);
-  }
-
-  Future<void> _afterAuth() async {
-    await _upsertDevice(online: true);
-    _startHeartbeat();
-    await _subscribeCommands();
-  }
-
-  String _normalize(String url) {
-    String u = url.trim();
-    if (!u.startsWith('http://') && !u.startsWith('https://')) u = 'http://$u';
-    return u;
-  }
-
-  // ── Telemetry ingestion ────────────────────────────────────────────────────
-
-  /// Feed an event from `DjiService.events()`.
-  void onEvent(Map<String, dynamic> event) {
-    final PocketBase? pb = _pb;
-    if (pb == null || !pb.authStore.isValid) return;
-    final String? type = event['type'] as String?;
-
-    if (type == 'telemetry') {
-      final DateTime now = DateTime.now();
-      if (now.difference(_lastTelemetry) < const Duration(milliseconds: 500)) return;
-      _lastTelemetry = now;
-    }
-
-    _appendEvent(type ?? 'event', event);
-
-    // Reflect registration/connection promptly in the presence record.
-    if (type == 'registration' || type == 'connection') {
-      _upsertDevice(online: true);
-    }
-  }
-
-  Future<void> _appendEvent(String kind, Map<String, dynamic> event) async {
-    final PocketBase? pb = _pb;
-    if (pb == null) return;
-    try {
-      await pb.collection('telemetry').create(body: <String, dynamic>{
-        'device': _deviceId,
-        'kind': kind,
-        'payload': event,
-        'owner': pb.authStore.record?.id,
-      });
-    } catch (_) {
-      // best-effort; drop on transient failure
-    }
-  }
-
-  // ── Device presence ─────────────────────────────────────────────────────────
-
-  void _startHeartbeat() {
-    _heartbeat?.cancel();
-    _heartbeat = Timer.periodic(const Duration(seconds: 6), (_) => _upsertDevice(online: true));
-  }
-
-  Future<void> _upsertDevice({required bool online}) async {
-    final PocketBase? pb = _pb;
-    if (pb == null) return;
-    final Map<String, dynamic> st = stateProvider?.call() ?? <String, dynamic>{};
-    final Map<String, dynamic> body = <String, dynamic>{
-      'device': _deviceId,
-      'online': online,
-      'connected': st['connected'] ?? false,
-      'model': st['model'] ?? '',
-      'registration': st['registration'] ?? '',
-      'lastSeen': DateTime.now().millisecondsSinceEpoch ~/ 1000,
-      'owner': pb.authStore.record?.id,
-    };
-    try {
-      if (_devicesRecordId == null) {
-        try {
-          final RecordModel existing =
-              await pb.collection('devices').getFirstListItem('device="$_deviceId"');
-          _devicesRecordId = existing.id;
-        } catch (_) {
-          // none yet
-        }
-      }
-      if (_devicesRecordId == null) {
-        final RecordModel rec = await pb.collection('devices').create(body: body);
-        _devicesRecordId = rec.id;
-      } else {
-        await pb.collection('devices').update(_devicesRecordId!, body: body);
-      }
-    } catch (_) {
-      _devicesRecordId = null; // record may have been removed; recreate next tick
-    }
-  }
-
-  // ── Commands ────────────────────────────────────────────────────────────────
-
-  Future<void> _subscribeCommands() async {
-    final PocketBase? pb = _pb;
-    if (pb == null) return;
-    try {
-      await _cmdUnsub?.call();
-    } catch (_) {}
-    _cmdUnsub = await pb.collection('commands').subscribe(
-      '*',
-      (RecordSubscriptionEvent e) {
-        if (e.action != 'create') return;
-        final RecordModel? rec = e.record;
-        if (rec == null) return;
-        if (rec.getStringValue('device') != _deviceId) return;
-        final String cmd = rec.getStringValue('command');
-        final Map<String, dynamic> payload =
-            (rec.get<Map<String, dynamic>?>('payload') ?? <String, dynamic>{});
-        if (cmd.isNotEmpty) onCommand?.call(cmd, payload);
-      },
-      filter: 'device="$_deviceId"',
-    );
-  }
-
-  void dispose() {
-    _heartbeat?.cancel();
-    _statusController.close();
-  }
-}
-
-/// App-wide PocketBase service instance.
-final PbService pb = PbService();
diff --git a/Fly App/backup_pocketbase_app/pubspec_pocketbase.yaml b/Fly App/backup_pocketbase_app/pubspec_pocketbase.yaml
deleted file mode 100644
index 962387a..0000000
--- a/Fly App/backup_pocketbase_app/pubspec_pocketbase.yaml	
+++ /dev/null
@@ -1,94 +0,0 @@
-name: pilotvault_fly
-description: "DJI Mobile SDK V4 sample app built with Flutter"
-# The following line prevents the package from being accidentally published to
-# pub.dev using `flutter pub publish`. This is preferred for private packages.
-publish_to: 'none' # Remove this line if you wish to publish to pub.dev
-
-# The following defines the version and build number for your application.
-# A version number is three numbers separated by dots, like 1.2.43
-# followed by an optional build number separated by a +.
-# Both the version and the builder number may be overridden in flutter
-# build by specifying --build-name and --build-number, respectively.
-# In Android, build-name is used as versionName while build-number used as versionCode.
-# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
-# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
-# Read more about iOS versioning at
-# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-# In Windows, build-name is used as the major, minor, and patch parts
-# of the product and file versions while build-number is used as the build suffix.
-version: 1.0.0+1
-
-environment:
-  sdk: ^3.6.2
-
-# Dependencies specify other packages that your package needs in order to work.
-# To automatically upgrade your package dependencies to the latest versions
-# consider running `flutter pub upgrade --major-versions`. Alternatively,
-# dependencies can be manually updated by changing the version numbers below to
-# the latest version available on pub.dev. To see which dependencies have newer
-# versions available, run `flutter pub outdated`.
-dependencies:
-  flutter:
-    sdk: flutter
-
-  # The following adds the Cupertino Icons font to your application.
-  # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^1.0.8
-
-  # PocketBase backend client (auth, records, realtime).
-  pocketbase: ^0.22.0
-  # Persists the auth token across app launches.
-  shared_preferences: ^2.3.2
-
-dev_dependencies:
-  flutter_test:
-    sdk: flutter
-
-  # The "flutter_lints" package below contains a set of recommended lints to
-  # encourage good coding practices. The lint set provided by the package is
-  # activated in the `analysis_options.yaml` file located at the root of your
-  # package. See that file for information about deactivating specific lint
-  # rules and activating additional ones.
-  flutter_lints: ^5.0.0
-
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
-
-# The following section is specific to Flutter packages.
-flutter:
-
-  # The following line ensures that the Material Icons font is
-  # included with your application, so that you can use the icons in
-  # the material Icons class.
-  uses-material-design: true
-
-  # To add assets to your application, add an assets section, like this:
-  # assets:
-  #   - images/a_dot_burr.jpeg
-  #   - images/a_dot_ham.jpeg
-
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/to/resolution-aware-images
-
-  # For details regarding adding assets from package dependencies, see
-  # https://flutter.dev/to/asset-from-package
-
-  # To add custom fonts to your application, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts from package dependencies,
-  # see https://flutter.dev/to/font-from-package