Phase 3.1: Remove flutter_bloc + equatable, delete old bloc files

- Remove flutter_bloc and equatable dependencies from both apps
- Delete all 10 old bloc files (5 per app)
- Fix 6 remaining screens that used context.read<ApiClient>() from
  flutter_bloc → converted to ConsumerStatefulWidget/ConsumerWidget
  with ref.read(apiClientProvider)
- Both apps now use Riverpod exclusively for state management

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mitra_app/lib/core/status/status_bloc.dart

@@ -1,128 +0,0 @@
-import 'dart:async';
-import 'package:equatable/equatable.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
-import '../api/api_client.dart';
-
-// Events
-abstract class StatusEvent extends Equatable {
-  @override
-  List<Object?> get props => [];
-}
-
-class StatusLoadRequested extends StatusEvent {}
-class ToggleOnline extends StatusEvent {}
-class ToggleOffline extends StatusEvent {}
-class HeartbeatTick extends StatusEvent {}
-class AppPaused extends StatusEvent {}
-class AppResumed extends StatusEvent {}
-
-// States
-abstract class StatusState extends Equatable {
-  @override
-  List<Object?> get props => [];
-}
-
-class StatusInitial extends StatusState {}
-
-class StatusLoaded extends StatusState {
-  final bool isOnline;
-  StatusLoaded({required this.isOnline});
-  @override
-  List<Object?> get props => [isOnline];
-}
-
-class StatusLoading extends StatusState {}
-
-class StatusError extends StatusState {
-  final String message;
-  StatusError(this.message);
-  @override
-  List<Object?> get props => [message];
-}
-
-// Bloc
-class StatusBloc extends Bloc<StatusEvent, StatusState> {
-  final ApiClient apiClient;
-  Timer? _heartbeatTimer;
-
-  StatusBloc({required this.apiClient}) : super(StatusInitial()) {
-    on<StatusLoadRequested>(_onLoad);
-    on<ToggleOnline>(_onToggleOnline);
-    on<ToggleOffline>(_onToggleOffline);
-    on<HeartbeatTick>(_onHeartbeat);
-    on<AppPaused>(_onAppPaused);
-    on<AppResumed>(_onAppResumed);
-  }
-
-  Future<void> _onLoad(StatusLoadRequested event, Emitter<StatusState> emit) async {
-    try {
-      final response = await apiClient.get('/api/mitra/status');
-      final data = response['data'] as Map<String, dynamic>;
-      emit(StatusLoaded(isOnline: data['is_online'] as bool));
-    } catch (e) {
-      emit(StatusLoaded(isOnline: false));
-    }
-  }
-
-  Future<void> _onToggleOnline(ToggleOnline event, Emitter<StatusState> emit) async {
-    emit(StatusLoading());
-    try {
-      await apiClient.post('/api/mitra/status/online');
-      _startHeartbeat();
-      emit(StatusLoaded(isOnline: true));
-    } catch (e) {
-      emit(StatusError('Gagal mengubah status. Coba lagi.'));
-    }
-  }
-
-  Future<void> _onToggleOffline(ToggleOffline event, Emitter<StatusState> emit) async {
-    emit(StatusLoading());
-    try {
-      await apiClient.post('/api/mitra/status/offline');
-      _stopHeartbeat();
-      emit(StatusLoaded(isOnline: false));
-    } catch (e) {
-      emit(StatusError('Gagal mengubah status. Coba lagi.'));
-    }
-  }
-
-  Future<void> _onHeartbeat(HeartbeatTick event, Emitter<StatusState> emit) async {
-    try {
-      await apiClient.post('/api/mitra/status/heartbeat');
-    } catch (_) {
-      // Heartbeat failure is non-critical; server will auto-offline after 45s
-    }
-  }
-
-  Future<void> _onAppPaused(AppPaused event, Emitter<StatusState> emit) async {
-    // Don't auto-offline on pause — heartbeat timeout (45s) handles truly offline mitras.
-    // This allows mitra to stay online when briefly switching apps.
-    _stopHeartbeat();
-  }
-
-  Future<void> _onAppResumed(AppResumed event, Emitter<StatusState> emit) async {
-    // Resume heartbeat if mitra was online
-    if (state is StatusLoaded && (state as StatusLoaded).isOnline) {
-      _startHeartbeat();
-    }
-    add(StatusLoadRequested());
-  }
-
-  void _startHeartbeat() {
-    _stopHeartbeat();
-    _heartbeatTimer = Timer.periodic(const Duration(seconds: 15), (_) {
-      add(HeartbeatTick());
-    });
-  }
-
-  void _stopHeartbeat() {
-    _heartbeatTimer?.cancel();
-    _heartbeatTimer = null;
-  }
-
-  @override
-  Future<void> close() {
-    _stopHeartbeat();
-    return super.close();
-  }
-}