Fix transfer functoin, add display for numer of pending locos

lib/app.dart

@@ -2,8 +2,10 @@ import 'package:flutter/material.dart';
 import 'package:mileograph_flutter/services/api_service.dart';
 import 'package:mileograph_flutter/services/authservice.dart';
 import 'package:mileograph_flutter/services/data_service.dart';
+import 'package:mileograph_flutter/services/accent_color_service.dart';
 import 'package:mileograph_flutter/services/distance_unit_service.dart';
 import 'package:mileograph_flutter/services/endpoint_service.dart';
+import 'package:mileograph_flutter/services/theme_mode_service.dart';
 import 'package:mileograph_flutter/ui/app_shell.dart';
 import 'package:provider/provider.dart';
 
@@ -17,9 +19,15 @@ class App extends StatelessWidget {
         ChangeNotifierProvider<EndpointService>(
           create: (_) => EndpointService(),
         ),
+        ChangeNotifierProvider<AccentColorService>(
+          create: (_) => AccentColorService(),
+        ),
         ChangeNotifierProvider<DistanceUnitService>(
           create: (_) => DistanceUnitService(),
         ),
+        ChangeNotifierProvider<ThemeModeService>(
+          create: (_) => ThemeModeService(),
+        ),
         ProxyProvider<EndpointService, ApiService>(
           update: (_, endpoint, api) {
             final service = api ?? ApiService(baseUrl: endpoint.baseUrl);

lib/components/pages/profile.dart

@@ -127,6 +127,9 @@ class _ProfilePageState extends State<ProfilePage> {
           );
       if (!mounted) return;
       setState(() => _status = status);
+      final data = context.read<DataService>();
+      await data.fetchFriendships();
+      await data.fetchPendingFriendships();
       _showSnack('Friend request sent');
     } catch (e) {
       _showSnack('Failed to send request: $e');
@@ -159,6 +162,7 @@ class _ProfilePageState extends State<ProfilePage> {
       final updated = await context.read<DataService>().acceptFriendship(id);
       if (!mounted) return;
       setState(() => _status = updated);
+      await context.read<DataService>().fetchFriendships();
       _showSnack('Friend request accepted');
     } catch (e) {
       _showSnack('Failed to accept: $e');
@@ -175,6 +179,7 @@ class _ProfilePageState extends State<ProfilePage> {
       final updated = await context.read<DataService>().rejectFriendship(id);
       if (!mounted) return;
       setState(() => _status = updated);
+      await context.read<DataService>().fetchPendingFriendships();
       _showSnack('Friend request rejected');
     } catch (e) {
       _showSnack('Failed to reject: $e');

lib/components/pages/settings.dart

@@ -3,8 +3,10 @@ import 'dart:convert';
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:http/http.dart' as http;
+import 'package:mileograph_flutter/services/accent_color_service.dart';
 import 'package:mileograph_flutter/services/distance_unit_service.dart';
 import 'package:mileograph_flutter/services/endpoint_service.dart';
+import 'package:mileograph_flutter/services/theme_mode_service.dart';
 import 'package:mileograph_flutter/services/data_service.dart';
 import 'package:provider/provider.dart';
 
@@ -18,6 +20,18 @@ class SettingsPage extends StatefulWidget {
 class _SettingsPageState extends State<SettingsPage> {
   late final TextEditingController _endpointController;
   bool _saving = false;
+  static const List<Color> _accentPalette = [
+    Colors.red,
+    Colors.pink,
+    Colors.orange,
+    Colors.amber,
+    Colors.green,
+    Colors.teal,
+    Colors.blue,
+    Colors.indigo,
+    Colors.purple,
+    Colors.cyan,
+  ];
 
   @override
   void initState() {
@@ -130,7 +144,12 @@ class _SettingsPageState extends State<SettingsPage> {
   Widget build(BuildContext context) {
     final endpointService = context.watch<EndpointService>();
     final distanceUnitService = context.watch<DistanceUnitService>();
-    if (!endpointService.isLoaded || !distanceUnitService.isLoaded) {
+    final accentService = context.watch<AccentColorService>();
+    final themeModeService = context.watch<ThemeModeService>();
+    if (!endpointService.isLoaded ||
+        !distanceUnitService.isLoaded ||
+        !accentService.isLoaded ||
+        !themeModeService.isLoaded) {
       return const Scaffold(
         body: Center(child: CircularProgressIndicator()),
       );
@@ -184,6 +203,73 @@ class _SettingsPageState extends State<SettingsPage> {
               },
             ),
             const SizedBox(height: 24),
+            Text(
+              'Accent colour',
+              style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                    fontWeight: FontWeight.w700,
+                  ),
+            ),
+            const SizedBox(height: 8),
+            Text(
+              'Choose your preferred accent colour or use system colours.',
+              style: Theme.of(context).textTheme.bodySmall,
+            ),
+            const SizedBox(height: 12),
+            Wrap(
+              spacing: 12,
+              runSpacing: 8,
+              crossAxisAlignment: WrapCrossAlignment.center,
+              children: [
+                OutlinedButton.icon(
+                  onPressed:
+                      accentService.useSystem ? null : () => accentService.setUseSystem(true),
+                  icon: const Icon(Icons.phone_android),
+                  label: const Text('Use system colours'),
+                ),
+                ..._accentPalette.map(
+                  (color) => _AccentSwatchButton(
+                    color: color,
+                    selected:
+                        !accentService.useSystem &&
+                            accentService.seedColor.toARGB32() == color.toARGB32(),
+                    onTap: () => accentService.setSeedColor(color),
+                  ),
+                ),
+              ],
+            ),
+            const SizedBox(height: 24),
+            Text(
+              'Theme mode',
+              style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                    fontWeight: FontWeight.w700,
+                  ),
+            ),
+            const SizedBox(height: 8),
+            SegmentedButton<ThemeMode>(
+              segments: const [
+                ButtonSegment(
+                  value: ThemeMode.system,
+                  icon: Icon(Icons.settings_suggest),
+                  label: Text('System'),
+                ),
+                ButtonSegment(
+                  value: ThemeMode.light,
+                  icon: Icon(Icons.light_mode),
+                  label: Text('Light'),
+                ),
+                ButtonSegment(
+                  value: ThemeMode.dark,
+                  icon: Icon(Icons.dark_mode),
+                  label: Text('Dark'),
+                ),
+              ],
+              selected: {themeModeService.mode},
+              onSelectionChanged: (selection) {
+                final mode = selection.first;
+                themeModeService.setMode(mode);
+              },
+            ),
+            const SizedBox(height: 24),
             Text(
               'API endpoint',
               style: Theme.of(context).textTheme.titleMedium?.copyWith(
@@ -241,3 +327,54 @@ class _SettingsPageState extends State<SettingsPage> {
     );
   }
 }
+
+class _AccentSwatchButton extends StatelessWidget {
+  const _AccentSwatchButton({
+    required this.color,
+    required this.selected,
+    required this.onTap,
+  });
+
+  final Color color;
+  final bool selected;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final borderColor = selected
+        ? Theme.of(context).colorScheme.onSurface
+        : Colors.black26;
+    return InkWell(
+      onTap: onTap,
+      customBorder: const CircleBorder(),
+      child: Container(
+        width: 40,
+        height: 40,
+        decoration: BoxDecoration(
+          color: color,
+          shape: BoxShape.circle,
+          border: Border.all(
+            color: borderColor,
+            width: selected ? 3 : 1,
+          ),
+          boxShadow: [
+            BoxShadow(
+              color: Colors.black.withValues(alpha: 0.15),
+              blurRadius: 4,
+              offset: const Offset(0, 2),
+            ),
+          ],
+        ),
+        child: selected
+            ? const Center(
+                child: Icon(
+                  Icons.check,
+                  size: 18,
+                  color: Colors.white,
+                ),
+              )
+            : null,
+      ),
+    );
+  }
+}

lib/components/pages/traction/traction_page.dart

@@ -12,6 +12,8 @@ class TractionPage extends StatefulWidget {
     this.selectionMode = false,
     this.selectionSingle = false,
     this.replacementPendingLocoId,
+    this.transferFromLabel,
+    this.transferFromLocoId,
     this.onSelect,
     this.selectedKeys = const {},
   });
@@ -19,6 +21,8 @@ class TractionPage extends StatefulWidget {
   final bool selectionMode;
   final bool selectionSingle;
   final int? replacementPendingLocoId;
+  final String? transferFromLabel;
+  final int? transferFromLocoId;
   final ValueChanged<LocoSummary>? onSelect;
   final Set<String> selectedKeys;
 
@@ -33,6 +37,7 @@ class _TractionPageState extends State<TractionPage> {
   final _nameController = TextEditingController();
   bool _mileageFirst = true;
   bool _initialised = false;
+  int? get _transferFromLocoId => widget.transferFromLocoId;
   bool _showAdvancedFilters = false;
   String? _selectedClass;
   late Set<String> _selectedKeys;
@@ -58,6 +63,8 @@ class _TractionPageState extends State<TractionPage> {
   static const int _pageSize = 100;
   int _lastTractionOffset = 0;
   String? _lastQuerySignature;
+  String? _transferFromLabel;
+  bool _isSearching = false;
 
   @override
   void initState() {
@@ -71,6 +78,7 @@ class _TractionPageState extends State<TractionPage> {
     if (!_initialised) {
       _initialised = true;
       _selectedKeys = {...widget.selectedKeys};
+      _transferFromLabel = widget.transferFromLabel;
       WidgetsBinding.instance.addPostFrameCallback((_) {
         _initialLoad();
       });
@@ -79,12 +87,16 @@ class _TractionPageState extends State<TractionPage> {
 
   Future<void> _initialLoad() async {
     final data = context.read<DataService>();
+    final auth = context.read<AuthService>();
     await _restoreSearchState();
     if (_lastTractionOffset == 0 && data.traction.length > _pageSize) {
       _lastTractionOffset = data.traction.length - _pageSize;
     }
     data.fetchClassList();
     data.fetchEventFields();
+    if (auth.isElevated) {
+      unawaited(data.fetchPendingLocoCount());
+    }
     await _refreshTraction();
   }
 
@@ -150,6 +162,7 @@ class _TractionPageState extends State<TractionPage> {
     bool append = false,
     bool preservePosition = true,
   }) async {
+    _setState(() => _isSearching = true);
     final data = context.read<DataService>();
     final filters = <String, dynamic>{};
     final name = _nameController.text.trim();
@@ -208,6 +221,7 @@ class _TractionPageState extends State<TractionPage> {
     }
 
     await _persistSearchState();
+    _setState(() => _isSearching = false);
   }
 
   void _clearFilters() {
@@ -306,6 +320,7 @@ class _TractionPageState extends State<TractionPage> {
     final isMobile = MediaQuery.of(context).size.width < 700;
     _syncControllersForFields(data.eventFields);
     final extraFields = _activeEventFields(data.eventFields);
+    final transferBanner = _buildTransferBanner(data);
 
     final slivers = <Widget>[
       SliverPadding(
@@ -335,6 +350,10 @@ class _TractionPageState extends State<TractionPage> {
                   _buildHeaderActions(context, isMobile),
                 ],
               ),
+              if (transferBanner != null) ...[
+                const SizedBox(height: 8),
+                transferBanner,
+              ],
               const SizedBox(height: 12),
               Card(
                 child: Padding(
@@ -484,8 +503,25 @@ class _TractionPageState extends State<TractionPage> {
                           ),
                           ElevatedButton.icon(
                             onPressed: _refreshTraction,
-                            icon: const Icon(Icons.search),
-                            label: const Text('Search'),
+                            icon: (_isSearching || data.isTractionLoading)
+                                ? SizedBox(
+                                    width: 16,
+                                    height: 16,
+                                    child: CircularProgressIndicator(
+                                      strokeWidth: 2,
+                                      valueColor: AlwaysStoppedAnimation<Color>(
+                                        Theme.of(context)
+                                            .colorScheme
+                                            .onPrimary,
+                                      ),
+                                    ),
+                                  )
+                                : const Icon(Icons.search),
+                            label: Text(
+                              (_isSearching || data.isTractionLoading)
+                                  ? 'Searching...'
+                                  : 'Search',
+                            ),
                           ),
                         ],
                       ),
@@ -610,6 +646,12 @@ class _TractionPageState extends State<TractionPage> {
 
   Widget _buildHeaderActions(BuildContext context, bool isMobile) {
     final isElevated = context.read<AuthService>().isElevated;
+    final data = context.watch<DataService>();
+    final pendingCount = data.pendingLocoCount;
+    String? pendingLabel;
+    if (pendingCount > 0) {
+      pendingLabel = pendingCount > 999 ? '999+' : pendingCount.toString();
+    }
     final refreshButton = IconButton(
       tooltip: 'Refresh',
       onPressed: _refreshTraction,
@@ -656,6 +698,7 @@ class _TractionPageState extends State<TractionPage> {
                   try {
                     await context.push('/traction/pending');
                     if (!mounted) return;
+                    await data.fetchPendingLocoCount();
                   } catch (_) {
                     if (!mounted) return;
                     messenger.showSnackBar(
@@ -690,9 +733,16 @@ class _TractionPageState extends State<TractionPage> {
               }
               if (hasAdminActions) {
                 items.add(
-                  const PopupMenuItem(
+                  PopupMenuItem(
                     value: _TractionMoreAction.adminPending,
-                    child: Text('Pending locos'),
+                    child: Row(
+                      children: [
+                        const Text('Pending locos'),
+                        const Spacer(),
+                        if (pendingLabel != null)
+                          _countChip(context, pendingLabel),
+                      ],
+                    ),
                   ),
                 );
               }
@@ -702,7 +752,16 @@ class _TractionPageState extends State<TractionPage> {
               child: FilledButton.tonalIcon(
                 onPressed: () {},
                 icon: const Icon(Icons.more_horiz),
-                label: const Text('More'),
+                label: Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    const Text('More'),
+                    if (pendingLabel != null) ...[
+                      const SizedBox(width: 6),
+                      _countChip(context, pendingLabel),
+                    ],
+                  ],
+                ),
               ),
             ),
           );
@@ -1200,6 +1259,75 @@ class _TractionPageState extends State<TractionPage> {
     }
   }
 
+  Future<void> _confirmTransfer(LocoSummary target) async {
+    final fromId = _transferFromLocoId;
+    if (fromId == null) return;
+    final navContext = context;
+    final messenger = ScaffoldMessenger.of(navContext);
+    final data = navContext.read<DataService>();
+    final fromLoco = data.traction.firstWhere(
+      (l) => l.id == fromId,
+      orElse: () => target,
+    );
+    final fromLabel = '${fromLoco.locoClass} ${fromLoco.number}'.trim();
+    final toLabel = '${target.locoClass} ${target.number}'.trim();
+    final confirmed = await showDialog<bool>(
+      context: navContext,
+      builder: (dialogContext) {
+        return AlertDialog(
+          title: const Text('Transfer allocations?'),
+          content: Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Text(
+                'Transfer all allocations from $fromLabel to $toLabel?',
+              ),
+              const SizedBox(height: 12),
+              Text(
+                'From: $fromLabel',
+                style: Theme.of(dialogContext)
+                    .textTheme
+                    .bodyMedium
+                    ?.copyWith(fontWeight: FontWeight.w700),
+              ),
+              Text('To: $toLabel'),
+            ],
+          ),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.of(dialogContext).pop(false),
+              child: const Text('Cancel'),
+            ),
+            FilledButton(
+              onPressed: () => Navigator.of(dialogContext).pop(true),
+              child: const Text('Transfer'),
+            ),
+          ],
+        );
+      },
+    );
+    if (confirmed != true) return;
+    if (!navContext.mounted) return;
+    try {
+      final data = navContext.read<DataService>();
+      await data.transferAllocations(fromLocoId: fromId, toLocoId: target.id);
+      if (navContext.mounted) {
+        messenger.showSnackBar(
+          const SnackBar(content: Text('Allocations transferred')),
+        );
+      }
+      await _refreshTraction(preservePosition: true);
+      if (navContext.mounted) navContext.pop();
+    } catch (e) {
+      if (navContext.mounted) {
+        messenger.showSnackBar(
+          SnackBar(content: Text('Failed to transfer allocations: $e')),
+        );
+      }
+    }
+  }
+
   bool _isSelected(LocoSummary loco) {
     final keyVal = '${loco.locoClass}-${loco.number}';
     return _selectedKeys.contains(keyVal);
@@ -1223,6 +1351,69 @@ class _TractionPageState extends State<TractionPage> {
     );
   }
 
+  Widget? _buildTransferBanner(DataService data) {
+    final fromId = _transferFromLocoId;
+    if (fromId == null) return null;
+    if (_transferFromLabel == null || _transferFromLabel!.trim().isEmpty) {
+      final from = data.traction.firstWhere(
+        (loco) => loco.id == fromId,
+        orElse: () => LocoSummary(
+          locoId: fromId,
+          locoType: '',
+          locoNumber: '',
+          locoName: '',
+          locoClass: '',
+          locoOperator: '',
+        ),
+      );
+      final fallbackLabel = '${from.locoClass} ${from.number}'.trim().isEmpty
+          ? 'Loco $fromId'
+          : '${from.locoClass} ${from.number}'.trim();
+      _transferFromLabel = fallbackLabel;
+    }
+    final label = _transferFromLabel ?? 'Loco $fromId';
+    return Container(
+      width: double.infinity,
+      padding: const EdgeInsets.all(12),
+      decoration: BoxDecoration(
+        color: Colors.orange.withValues(alpha: 0.1),
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(color: Colors.orange.withValues(alpha: 0.4)),
+      ),
+      child: Row(
+        children: [
+          const Icon(Icons.swap_horiz, color: Colors.orange),
+          const SizedBox(width: 8),
+          Expanded(
+            child: Text(
+              'Transferring allocations from $label. Select a loco to transfer to.',
+              style: const TextStyle(fontWeight: FontWeight.w600),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _countChip(BuildContext context, String label) {
+    final scheme = Theme.of(context).colorScheme;
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
+      decoration: BoxDecoration(
+        color: scheme.primary,
+        borderRadius: BorderRadius.circular(12),
+      ),
+      child: Text(
+        label,
+        style: TextStyle(
+          color: scheme.onPrimary,
+          fontWeight: FontWeight.w700,
+          fontSize: 12,
+        ),
+      ),
+    );
+  }
+
   Widget _buildFilterInput(
     BuildContext context,
     EventField field,
@@ -1345,15 +1536,25 @@ class _TractionPageState extends State<TractionPage> {
                 onOpenLegs: () => _openLegs(loco),
                 onActionComplete: _refreshTraction,
                 onToggleSelect: widget.selectionMode &&
-                        widget.replacementPendingLocoId == null
+                        widget.replacementPendingLocoId == null &&
+                        (widget.transferFromLocoId == null ||
+                            widget.transferFromLocoId != loco.id)
                     ? () => _toggleSelection(loco)
                     : null,
-              onReplacePending: widget.selectionMode &&
-                      widget.selectionSingle &&
-                      widget.replacementPendingLocoId != null
-                  ? () => _confirmReplacePending(loco)
-                  : null,
-            );
+                onReplacePending: widget.selectionMode &&
+                        widget.selectionSingle &&
+                        widget.replacementPendingLocoId != null &&
+                        (widget.transferFromLocoId == null ||
+                            widget.transferFromLocoId != loco.id)
+                    ? () => _confirmReplacePending(loco)
+                    : null,
+                onTransferAllocations: widget.selectionMode &&
+                        widget.selectionSingle &&
+                        widget.transferFromLocoId != null &&
+                        widget.transferFromLocoId != loco.id
+                    ? () => _confirmTransfer(loco)
+                    : null,
+              );
           }
 
           return Padding(

lib/components/traction/traction_card.dart

@@ -20,6 +20,7 @@ class TractionCard extends StatelessWidget {
     this.onToggleSelect,
     this.onReplacePending,
     this.onActionComplete,
+    this.onTransferAllocations,
   });
 
   final LocoSummary loco;
@@ -31,6 +32,7 @@ class TractionCard extends StatelessWidget {
   final VoidCallback? onToggleSelect;
   final VoidCallback? onReplacePending;
   final Future<void> Function()? onActionComplete;
+  final VoidCallback? onTransferAllocations;
 
   @override
   Widget build(BuildContext context) {
@@ -145,23 +147,30 @@ class TractionCard extends StatelessWidget {
                 ];
 
                 // Prefer replace action when picking a replacement loco.
-                final addButton = onReplacePending != null
+                final addButton = onTransferAllocations != null
                     ? TextButton.icon(
-                        onPressed: onReplacePending,
+                        onPressed: onTransferAllocations,
                         icon: const Icon(Icons.swap_horiz),
-                        label: const Text('Replace'),
+                        label: const Text('Transfer'),
                       )
-                    : (!isRejected && selectionMode && onToggleSelect != null)
+                    : onReplacePending != null
                         ? TextButton.icon(
-                            onPressed: onToggleSelect,
-                            icon: Icon(
-                              isSelected
-                                  ? Icons.remove_circle_outline
-                                  : Icons.add_circle_outline,
-                            ),
-                            label: Text(isSelected ? 'Remove' : 'Add to entry'),
+                            onPressed: onReplacePending,
+                            icon: const Icon(Icons.swap_horiz),
+                            label: const Text('Replace'),
                           )
-                        : null;
+                        : (!isRejected && selectionMode && onToggleSelect != null)
+                            ? TextButton.icon(
+                                onPressed: onToggleSelect,
+                                icon: Icon(
+                                  isSelected
+                                      ? Icons.remove_circle_outline
+                                      : Icons.add_circle_outline,
+                                ),
+                                label:
+                                    Text(isSelected ? 'Remove' : 'Add to entry'),
+                              )
+                            : null;
 
                 if (isNarrow) {
                   return Column(
@@ -551,6 +560,7 @@ Future<void> showTractionDetails(
   LocoSummary loco, {
   Future<void> Function()? onActionComplete,
 }) async {
+  final navContext = context;
   final hasMileageOrTrips = _hasMileageOrTrips(loco);
   final isVisibilityPending =
       (loco.visibility ?? '').toLowerCase().trim() == 'pending';
@@ -583,11 +593,11 @@ Future<void> showTractionDetails(
         builder: (_, controller) {
           return Padding(
             padding: const EdgeInsets.all(16.0),
-            child: Column(
-              crossAxisAlignment: CrossAxisAlignment.start,
-              children: [
-                Row(
-                  children: [
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Row(
+                children: [
                     IconButton(
                       icon: const Icon(Icons.close),
                       onPressed: () => Navigator.of(ctx).pop(),
@@ -620,16 +630,16 @@ Future<void> showTractionDetails(
                       style: Theme.of(context).textTheme.bodyMedium,
                     ),
                   ),
-                const SizedBox(height: 4),
-                Expanded(
-                  child: ListView(
-                    controller: controller,
-                    children: [
-                      if (isRejected && rejectedReason.isNotEmpty)
-                        ...[
-                          _detailRow(
-                            context,
-                            'Rejection reason',
+              const SizedBox(height: 4),
+              Expanded(
+                child: ListView(
+                  controller: controller,
+                  children: [
+                    if (isRejected && rejectedReason.isNotEmpty)
+                      ...[
+                        _detailRow(
+                          context,
+                          'Rejection reason',
                             rejectedReason,
                           ),
                           const Divider(),
@@ -713,57 +723,95 @@ Future<void> showTractionDetails(
                       );
                     },
                   ),
-                  if (auth.isElevated || canDeleteAsOwner) ...[
-                    const SizedBox(height: 16),
-                    FilledButton.tonal(
-                      style: FilledButton.styleFrom(
-                        backgroundColor:
-                            Theme.of(context).colorScheme.errorContainer,
-                        foregroundColor:
-                            Theme.of(context).colorScheme.onErrorContainer,
-                      ),
-                      onPressed: () async {
-                        final confirmed = await showDialog<bool>(
-                          context: context,
-                          builder: (context) {
-                            return AlertDialog(
-                              title: const Text('Delete loco?'),
-                              content: const Text(
-                                'This will permanently delete this loco. Are you sure?',
-                              ),
-                              actions: [
-                                TextButton(
-                                  onPressed: () => Navigator.of(context).pop(false),
-                                  child: const Text('Cancel'),
-                                ),
-                                FilledButton(
-                                  onPressed: () => Navigator.of(context).pop(true),
-                                  style: FilledButton.styleFrom(
-                                    backgroundColor:
-                                        Theme.of(context).colorScheme.error,
-                                  ),
-                                  child: const Text('Delete'),
-                                ),
-                              ],
-                            );
+                  const SizedBox(height: 16),
+                  FilledButton.icon(
+                    onPressed: () {
+                      Navigator.of(ctx).pop();
+                      final transferLabel = '${loco.locoClass} ${loco.number}'.trim();
+                      navContext.push(
+                        Uri(
+                          path: '/traction',
+                          queryParameters: {
+                            'selection': 'single',
+                            'transferFromLocoId': loco.id.toString(),
+                            'transferFromLabel': transferLabel,
                           },
-                        );
-                        if (confirmed != true) return;
-                        try {
-                          await data.adminDeleteLoco(locoId: loco.id);
-                          messenger.showSnackBar(
-                            const SnackBar(content: Text('Loco deleted')),
-                          );
-                          await onActionComplete?.call();
-                          if (!context.mounted) return;
-                          Navigator.of(ctx).pop();
-                        } catch (e) {
-                          messenger.showSnackBar(
-                            SnackBar(content: Text('Failed to delete loco: $e')),
-                          );
-                        }
-                      },
-                      child: const Text('Delete loco'),
+                        ).toString(),
+                        extra: {
+                          'selection': 'single',
+                          'transferFromLocoId': loco.id,
+                          'transferFromLabel': transferLabel,
+                        },
+                      );
+                    },
+                    icon: const Icon(Icons.swap_horiz),
+                    label: const Text('Transfer allocations'),
+                  ),
+                  if (auth.isElevated || canDeleteAsOwner) ...[
+                    const SizedBox(height: 8),
+                    ExpansionTile(
+                      tilePadding: EdgeInsets.zero,
+                      childrenPadding: EdgeInsets.zero,
+                      title: Text(
+                        'More',
+                        style: Theme.of(context).textTheme.titleSmall,
+                      ),
+                      children: [
+                        FilledButton.tonal(
+                          style: FilledButton.styleFrom(
+                            backgroundColor:
+                                Theme.of(context).colorScheme.errorContainer,
+                            foregroundColor:
+                                Theme.of(context).colorScheme.onErrorContainer,
+                          ),
+                          onPressed: () async {
+                            final confirmed = await showDialog<bool>(
+                              context: context,
+                              builder: (context) {
+                                return AlertDialog(
+                                  title: const Text('Delete loco?'),
+                                  content: const Text(
+                                    'This will permanently delete this loco. Are you sure?',
+                                  ),
+                                  actions: [
+                                    TextButton(
+                                      onPressed: () =>
+                                          Navigator.of(context).pop(false),
+                                      child: const Text('Cancel'),
+                                    ),
+                                    FilledButton(
+                                      onPressed: () =>
+                                          Navigator.of(context).pop(true),
+                                      style: FilledButton.styleFrom(
+                                        backgroundColor:
+                                            Theme.of(context).colorScheme.error,
+                                      ),
+                                      child: const Text('Delete'),
+                                    ),
+                                  ],
+                                );
+                              },
+                            );
+                            if (confirmed != true) return;
+                            try {
+                              await data.adminDeleteLoco(locoId: loco.id);
+                              messenger.showSnackBar(
+                                const SnackBar(content: Text('Loco deleted')),
+                              );
+                              await onActionComplete?.call();
+                              if (!context.mounted) return;
+                              Navigator.of(ctx).pop();
+                            } catch (e) {
+                              messenger.showSnackBar(
+                                SnackBar(
+                                    content: Text('Failed to delete loco: $e')),
+                              );
+                            }
+                          },
+                          child: const Text('Delete loco'),
+                        ),
+                        const SizedBox(height: 8),
+                      ],
                     ),
                   ],
                 ],

lib/services/accent_color_service.dart

@@ -0,0 +1,51 @@
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class AccentColorService extends ChangeNotifier {
+  static const _prefsKeyUseSystem = 'accent_use_system';
+  static const _prefsKeySeed = 'accent_seed';
+  static const Color defaultSeed = Colors.red;
+
+  bool _useSystem = true;
+  Color _seedColor = defaultSeed;
+  bool _hasSavedSeed = false;
+  bool _loaded = false;
+
+  bool get useSystem => _useSystem;
+  Color get seedColor => _seedColor;
+  bool get hasSavedSeed => _hasSavedSeed;
+  bool get isLoaded => _loaded;
+
+  AccentColorService() {
+    _load();
+  }
+
+  Future<void> _load() async {
+    final prefs = await SharedPreferences.getInstance();
+    _useSystem = prefs.getBool(_prefsKeyUseSystem) ?? true;
+    final seedValue = prefs.getInt(_prefsKeySeed);
+    if (seedValue != null) {
+      _seedColor = Color(seedValue);
+      _hasSavedSeed = true;
+    }
+    _loaded = true;
+    notifyListeners();
+  }
+
+  Future<void> setUseSystem(bool value) async {
+    _useSystem = value;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool(_prefsKeyUseSystem, _useSystem);
+    notifyListeners();
+  }
+
+  Future<void> setSeedColor(Color color) async {
+    _seedColor = color;
+    _useSystem = false;
+    _hasSavedSeed = true;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setInt(_prefsKeySeed, color.toARGB32());
+    await prefs.setBool(_prefsKeyUseSystem, _useSystem);
+    notifyListeners();
+  }
+}

lib/services/data_service/data_service_core.dart

@@ -52,6 +52,8 @@ class DataService extends ChangeNotifier {
   bool get isTractionLoading => _isTractionLoading;
   bool _tractionHasMore = false;
   bool get tractionHasMore => _tractionHasMore;
+  int _pendingLocoCount = 0;
+  int get pendingLocoCount => _pendingLocoCount;
   List<LocoChange> _latestLocoChanges = [];
   List<LocoChange> get latestLocoChanges => _latestLocoChanges;
   bool _isLatestLocoChangesLoading = false;
@@ -94,6 +96,22 @@ class DataService extends ChangeNotifier {
   bool _isEventFieldsLoading = false;
   bool get isEventFieldsLoading => _isEventFieldsLoading;
 
+  Future<void> fetchPendingLocoCount() async {
+    try {
+      final json = await api.get('/loco/pending?limit=1000&offset=0');
+      if (json is List) {
+        _pendingLocoCount = json.length;
+      } else {
+        _pendingLocoCount = 0;
+      }
+    } catch (e) {
+      debugPrint('Failed to fetch pending loco count: $e');
+      _pendingLocoCount = 0;
+    } finally {
+      _notifyAsync();
+    }
+  }
+
   // Station Data
   final Map<String, List<Station>> _stationCache = {};
   final Map<String, Future<List<Station>>?> _stationInFlightByKey = {};

lib/services/data_service/data_service_friendships.dart

@@ -151,6 +151,8 @@ extension DataServiceFriendships on DataService {
       overrideAddressee: targetUser,
     );
     _pendingOutgoing = [friendship, ..._pendingOutgoing];
+    await fetchFriendships();
+    await fetchPendingFriendships();
     _notifyAsync();
     return friendship;
   }
@@ -159,6 +161,8 @@ extension DataServiceFriendships on DataService {
     final json = await api.post('/friendships/$friendshipId/accept', {});
     final friendship = _parseAndUpsertFriendship(json, fallbackStatus: 'accepted');
     _pendingIncoming = _pendingIncoming.where((f) => f.id != friendshipId).toList();
+    await fetchFriendships();
+    await fetchPendingFriendships();
     _notifyAsync();
     return friendship;
   }
@@ -177,6 +181,8 @@ extension DataServiceFriendships on DataService {
         _parseAndRemoveFriendship(json, friendshipId, status: 'none');
     _pendingOutgoing =
         _pendingOutgoing.where((f) => f.id != friendshipId).toList();
+    await fetchFriendships();
+    await fetchPendingFriendships();
     _notifyAsync();
     return friendship;
   }
@@ -193,6 +199,8 @@ extension DataServiceFriendships on DataService {
         _pendingIncoming.where((f) => f.id != friendshipId).toList();
     _pendingOutgoing =
         _pendingOutgoing.where((f) => f.id != friendshipId).toList();
+    await fetchFriendships();
+    await fetchPendingFriendships();
     _notifyAsync();
   }
 

lib/services/data_service/data_service_traction.dart

@@ -62,8 +62,9 @@ extension DataServiceTraction on DataService {
       _tractionHasMore = false;
     } finally {
       _isTractionLoading = false;
-      _notifyAsync();
-    }
+    _notifyAsync();
+  }
+
   }
 
   Future<List<LocoAttrVersion>> fetchLocoTimeline(
@@ -466,6 +467,21 @@ extension DataServiceTraction on DataService {
     }
   }
 
+  Future<void> transferAllocations({
+    required int fromLocoId,
+    required int toLocoId,
+  }) async {
+    try {
+      await api.post('/loco/alloc/transfer', {
+        'from_loco_id': fromLocoId,
+        'to_loco_id': toLocoId,
+      });
+    } catch (e) {
+      debugPrint('Failed to transfer allocations $fromLocoId -> $toLocoId: $e');
+      rethrow;
+    }
+  }
+
   Future<void> adminDeleteLoco({required int locoId}) async {
     try {
       await api.delete('/loco/admin/delete/$locoId');

lib/services/theme_mode_service.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class ThemeModeService extends ChangeNotifier {
+  static const _prefsKey = 'theme_mode_preference';
+
+  ThemeMode _mode = ThemeMode.system;
+  bool _loaded = false;
+
+  ThemeMode get mode => _mode;
+  bool get isLoaded => _loaded;
+
+  ThemeModeService() {
+    _load();
+  }
+
+  Future<void> _load() async {
+    final prefs = await SharedPreferences.getInstance();
+    final saved = prefs.getString(_prefsKey);
+    if (saved != null) {
+      switch (saved) {
+        case 'light':
+          _mode = ThemeMode.light;
+          break;
+        case 'dark':
+          _mode = ThemeMode.dark;
+          break;
+        default:
+          _mode = ThemeMode.system;
+      }
+    }
+    _loaded = true;
+    notifyListeners();
+  }
+
+  Future<void> setMode(ThemeMode mode) async {
+    _mode = mode;
+    final prefs = await SharedPreferences.getInstance();
+    final value = switch (mode) {
+      ThemeMode.light => 'light',
+      ThemeMode.dark => 'dark',
+      _ => 'system',
+    };
+    await prefs.setString(_prefsKey, value);
+    notifyListeners();
+  }
+}

lib/ui/app_shell.dart

@@ -27,8 +27,10 @@ import 'package:mileograph_flutter/components/widgets/leg_share_edit_notificatio
 import 'package:mileograph_flutter/components/widgets/leg_share_notification_card.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
 import 'package:mileograph_flutter/services/authservice.dart';
+import 'package:mileograph_flutter/services/accent_color_service.dart';
 import 'package:mileograph_flutter/services/data_service.dart';
 import 'package:mileograph_flutter/services/navigation_guard.dart';
+import 'package:mileograph_flutter/services/theme_mode_service.dart';
 import 'package:provider/provider.dart';
 
 final GlobalKey<NavigatorState> _shellNavigatorKey =
@@ -103,12 +105,6 @@ class _MyAppState extends State<MyApp> {
   late final GoRouter _router;
   bool _routerInitialized = false;
 
-  final ColorScheme defaultLight = ColorScheme.fromSeed(seedColor: Colors.red);
-  final ColorScheme defaultDark = ColorScheme.fromSeed(
-    seedColor: Colors.red,
-    brightness: Brightness.dark,
-  );
-
   @override
   void didChangeDependencies() {
     super.didChangeDependencies();
@@ -188,10 +184,27 @@ class _MyAppState extends State<MyApp> {
                                 '',
                           )
                         : null;
+                final transferFromLocoIdStr =
+                    state.uri.queryParameters['transferFromLocoId'];
+                final transferFromLocoId = transferFromLocoIdStr != null
+                    ? int.tryParse(transferFromLocoIdStr)
+                    : state.extra is Map
+                        ? int.tryParse(
+                            (state.extra as Map)['transferFromLocoId']
+                                    ?.toString() ??
+                                '',
+                          )
+                        : null;
+                final transferFromLabel = state.uri.queryParameters['transferFromLabel'] ??
+                    (state.extra is Map
+                        ? (state.extra as Map)['transferFromLabel']?.toString()
+                        : null);
                 final selectionMode =
                     (selectionParam != null && selectionParam.isNotEmpty) ||
-                        replacementPendingLocoId != null;
+                        replacementPendingLocoId != null ||
+                        transferFromLocoId != null;
                 final selectionSingle = replacementPendingLocoId != null ||
+                    transferFromLocoId != null ||
                     selectionParam?.toLowerCase() == 'single' ||
                         selectionParam == '1' ||
                         selectionParam?.toLowerCase() == 'true';
@@ -199,6 +212,8 @@ class _MyAppState extends State<MyApp> {
                   selectionMode: selectionMode,
                   selectionSingle: selectionSingle,
                   replacementPendingLocoId: replacementPendingLocoId,
+                  transferFromLabel: transferFromLabel,
+                  transferFromLocoId: transferFromLocoId,
                 );
               },
             ),
@@ -325,20 +340,34 @@ class _MyAppState extends State<MyApp> {
 
   @override
   Widget build(BuildContext context) {
+    final accent = context.watch<AccentColorService>();
+    final themeModeService = context.watch<ThemeModeService>();
+    final seedColor =
+        accent.hasSavedSeed ? accent.seedColor : AccentColorService.defaultSeed;
+    final useSystemColors = accent.useSystem;
     return DynamicColorBuilder(
       builder: (ColorScheme? lightDynamic, ColorScheme? darkDynamic) {
+        final colorSchemeLight = useSystemColors && lightDynamic != null
+            ? lightDynamic
+            : ColorScheme.fromSeed(seedColor: seedColor);
+        final colorSchemeDark = useSystemColors && darkDynamic != null
+            ? darkDynamic
+            : ColorScheme.fromSeed(
+                seedColor: seedColor,
+                brightness: Brightness.dark,
+              );
         return MaterialApp.router(
           title: 'Mileograph',
           routerConfig: _router,
           theme: ThemeData(
             useMaterial3: true,
-            colorScheme: lightDynamic ?? defaultLight,
+            colorScheme: colorSchemeLight,
           ),
           darkTheme: ThemeData(
             useMaterial3: true,
-            colorScheme: darkDynamic ?? defaultDark,
+            colorScheme: colorSchemeDark,
           ),
-          themeMode: ThemeMode.system,
+          themeMode: themeModeService.mode,
         );
       },
     );

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 # 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: 0.7.0+8
+version: 0.7.2+10
 
 environment:
   sdk: ^3.8.1