* Workforce, Schedule generation and geofencing.

lib/models/app_settings.dart

@@ -0,0 +1,33 @@
+class GeofenceConfig {
+  GeofenceConfig({
+    required this.lat,
+    required this.lng,
+    required this.radiusMeters,
+  });
+
+  final double lat;
+  final double lng;
+  final double radiusMeters;
+
+  factory GeofenceConfig.fromJson(Map<String, dynamic> json) {
+    return GeofenceConfig(
+      lat: (json['lat'] as num).toDouble(),
+      lng: (json['lng'] as num).toDouble(),
+      radiusMeters: (json['radius_m'] as num).toDouble(),
+    );
+  }
+}
+
+class AppSetting {
+  AppSetting({required this.key, required this.value});
+
+  final String key;
+  final Map<String, dynamic> value;
+
+  factory AppSetting.fromMap(Map<String, dynamic> map) {
+    return AppSetting(
+      key: map['key'] as String,
+      value: Map<String, dynamic>.from(map['value'] as Map),
+    );
+  }
+}

lib/models/duty_schedule.dart

@@ -0,0 +1,39 @@
+class DutySchedule {
+  DutySchedule({
+    required this.id,
+    required this.userId,
+    required this.shiftType,
+    required this.startTime,
+    required this.endTime,
+    required this.status,
+    required this.createdAt,
+    required this.checkInAt,
+    required this.checkInLocation,
+  });
+
+  final String id;
+  final String userId;
+  final String shiftType;
+  final DateTime startTime;
+  final DateTime endTime;
+  final String status;
+  final DateTime createdAt;
+  final DateTime? checkInAt;
+  final Object? checkInLocation;
+
+  factory DutySchedule.fromMap(Map<String, dynamic> map) {
+    return DutySchedule(
+      id: map['id'] as String,
+      userId: map['user_id'] as String,
+      shiftType: map['shift_type'] as String? ?? 'normal',
+      startTime: DateTime.parse(map['start_time'] as String),
+      endTime: DateTime.parse(map['end_time'] as String),
+      status: map['status'] as String? ?? 'scheduled',
+      createdAt: DateTime.parse(map['created_at'] as String),
+      checkInAt: map['check_in_at'] == null
+          ? null
+          : DateTime.parse(map['check_in_at'] as String),
+      checkInLocation: map['check_in_location'],
+    );
+  }
+}

lib/models/swap_request.dart

@@ -0,0 +1,36 @@
+class SwapRequest {
+  SwapRequest({
+    required this.id,
+    required this.requesterId,
+    required this.recipientId,
+    required this.shiftId,
+    required this.status,
+    required this.createdAt,
+    required this.updatedAt,
+    required this.approvedBy,
+  });
+
+  final String id;
+  final String requesterId;
+  final String recipientId;
+  final String shiftId;
+  final String status;
+  final DateTime createdAt;
+  final DateTime? updatedAt;
+  final String? approvedBy;
+
+  factory SwapRequest.fromMap(Map<String, dynamic> map) {
+    return SwapRequest(
+      id: map['id'] as String,
+      requesterId: map['requester_id'] as String,
+      recipientId: map['recipient_id'] as String,
+      shiftId: map['shift_id'] as String,
+      status: map['status'] as String? ?? 'pending',
+      createdAt: DateTime.parse(map['created_at'] as String),
+      updatedAt: map['updated_at'] == null
+          ? null
+          : DateTime.parse(map['updated_at'] as String),
+      approvedBy: map['approved_by'] as String?,
+    );
+  }
+}

lib/providers/workforce_provider.dart

@@ -0,0 +1,139 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:supabase_flutter/supabase_flutter.dart';
+
+import '../models/app_settings.dart';
+import '../models/duty_schedule.dart';
+import '../models/swap_request.dart';
+import 'profile_provider.dart';
+import 'supabase_provider.dart';
+
+final geofenceProvider = FutureProvider<GeofenceConfig?>((ref) async {
+  final client = ref.watch(supabaseClientProvider);
+  final data = await client
+      .from('app_settings')
+      .select()
+      .eq('key', 'geofence')
+      .maybeSingle();
+  if (data == null) return null;
+  final setting = AppSetting.fromMap(data);
+  return GeofenceConfig.fromJson(setting.value);
+});
+
+final dutySchedulesProvider = StreamProvider<List<DutySchedule>>((ref) {
+  final client = ref.watch(supabaseClientProvider);
+  final profileAsync = ref.watch(currentProfileProvider);
+  final profile = profileAsync.valueOrNull;
+  if (profile == null) {
+    return Stream.value(const <DutySchedule>[]);
+  }
+
+  final isAdmin = profile.role == 'admin' || profile.role == 'dispatcher';
+  final base = client.from('duty_schedules').stream(primaryKey: ['id']);
+  if (isAdmin) {
+    return base
+        .order('start_time')
+        .map((rows) => rows.map(DutySchedule.fromMap).toList());
+  }
+  return base
+      .eq('user_id', profile.id)
+      .order('start_time')
+      .map((rows) => rows.map(DutySchedule.fromMap).toList());
+});
+
+final swapRequestsProvider = StreamProvider<List<SwapRequest>>((ref) {
+  final client = ref.watch(supabaseClientProvider);
+  final profileAsync = ref.watch(currentProfileProvider);
+  final profile = profileAsync.valueOrNull;
+  if (profile == null) {
+    return Stream.value(const <SwapRequest>[]);
+  }
+
+  final isAdmin = profile.role == 'admin' || profile.role == 'dispatcher';
+  final base = client.from('swap_requests').stream(primaryKey: ['id']);
+  if (isAdmin) {
+    return base
+        .order('created_at', ascending: false)
+        .map((rows) => rows.map(SwapRequest.fromMap).toList());
+  }
+  return base
+      .order('created_at', ascending: false)
+      .map(
+        (rows) => rows
+            .where(
+              (row) =>
+                  row['requester_id'] == profile.id ||
+                  row['recipient_id'] == profile.id,
+            )
+            .map(SwapRequest.fromMap)
+            .toList(),
+      );
+});
+
+final workforceControllerProvider = Provider<WorkforceController>((ref) {
+  final client = ref.watch(supabaseClientProvider);
+  return WorkforceController(client);
+});
+
+class WorkforceController {
+  WorkforceController(this._client);
+
+  final SupabaseClient _client;
+
+  Future<void> generateSchedule({
+    required DateTime startDate,
+    required DateTime endDate,
+  }) async {
+    await _client.rpc(
+      'generate_duty_schedule',
+      params: {
+        'start_date': _formatDate(startDate),
+        'end_date': _formatDate(endDate),
+      },
+    );
+  }
+
+  Future<void> insertSchedules(List<Map<String, dynamic>> schedules) async {
+    if (schedules.isEmpty) return;
+    await _client.from('duty_schedules').insert(schedules);
+  }
+
+  Future<String?> checkIn({
+    required String dutyScheduleId,
+    required double lat,
+    required double lng,
+  }) async {
+    final data = await _client.rpc(
+      'duty_check_in',
+      params: {'p_duty_id': dutyScheduleId, 'p_lat': lat, 'p_lng': lng},
+    );
+    return data as String?;
+  }
+
+  Future<String?> requestSwap({
+    required String shiftId,
+    required String recipientId,
+  }) async {
+    final data = await _client.rpc(
+      'request_shift_swap',
+      params: {'p_shift_id': shiftId, 'p_recipient_id': recipientId},
+    );
+    return data as String?;
+  }
+
+  Future<void> respondSwap({
+    required String swapId,
+    required String action,
+  }) async {
+    await _client.rpc(
+      'respond_shift_swap',
+      params: {'p_swap_id': swapId, 'p_action': action},
+    );
+  }
+
+  String _formatDate(DateTime value) {
+    final date = DateTime(value.year, value.month, value.day);
+    final month = date.month.toString().padLeft(2, '0');
+    final day = date.day.toString().padLeft(2, '0');
+    return '${date.year}-$month-$day';
+  }
+}

lib/routing/app_router.dart

@@ -15,6 +15,7 @@ import '../screens/tasks/task_detail_screen.dart';
 import '../screens/tasks/tasks_list_screen.dart';
 import '../screens/tickets/ticket_detail_screen.dart';
 import '../screens/tickets/tickets_list_screen.dart';
+import '../screens/workforce/workforce_screen.dart';
 import '../widgets/app_shell.dart';
 
 final appRouterProvider = Provider<GoRouter>((ref) {
@@ -105,11 +106,7 @@ final appRouterProvider = Provider<GoRouter>((ref) {
           ),
           GoRoute(
             path: '/workforce',
-            builder: (context, state) => const UnderDevelopmentScreen(
-              title: 'Workforce',
-              subtitle: 'Workforce management is in progress.',
-              icon: Icons.groups,
-            ),
+            builder: (context, state) => const WorkforceScreen(),
           ),
           GoRoute(
             path: '/reports',

lib/screens/admin/user_management_screen.dart

@@ -177,8 +177,9 @@ class _UserManagementScreenState extends ConsumerState<UserManagementScreen> {
               columnSpacing: 24,
               horizontalMargin: 16,
               dividerThickness: 1,
-              headingRowColor: MaterialStateProperty.resolveWith(
-                (states) => Theme.of(context).colorScheme.surfaceVariant,
+              headingRowColor: WidgetStateProperty.resolveWith(
+                (states) =>
+                    Theme.of(context).colorScheme.surfaceContainerHighest,
               ),
               columns: const [
                 DataColumn(label: Text('User')),
@@ -228,16 +229,16 @@ class _UserManagementScreenState extends ConsumerState<UserManagementScreen> {
                     if (selected != true) return;
                     _showUserDialog(context, profile, offices, assignments);
                   },
-                  color: MaterialStateProperty.resolveWith((states) {
-                    if (states.contains(MaterialState.selected)) {
+                  color: WidgetStateProperty.resolveWith((states) {
+                    if (states.contains(WidgetState.selected)) {
                       return Theme.of(
                         context,
-                      ).colorScheme.surfaceTint.withOpacity(0.12);
+                      ).colorScheme.surfaceTint.withValues(alpha: 0.12);
                     }
                     if (index.isEven) {
                       return Theme.of(
                         context,
-                      ).colorScheme.surface.withOpacity(0.6);
+                      ).colorScheme.surface.withValues(alpha: 0.6);
                     }
                     return Theme.of(context).colorScheme.surface;
                   }),