Add a Settings option to reorder the selection action bar's actions

NooSelectionBar's fixed inline slots (3 mobile / 4 desktop, the rest
behind "More") previously just took the first N actions in whatever
order each screen happened to build them in. Give bulk actions a
stable SelectionActionKind identity (independent of their dynamic
icon/label, e.g. favorite vs. unfavorite) so Settings can offer a
drag-to-reorder list - mirroring the existing Tabs section, minus the
pin/hide concept, which doesn't apply here - and each screen applies
that saved priority order via orderSelectionActions before handing
its action list to the bar.

lib/views/account_view.dart

@@ -5,6 +5,7 @@ import '../widgets/noo/nav/noo_toolbar.dart';
 import '../widgets/noo/noo_layout.dart';
 import '../widgets/settings/settings_account_card.dart';
 import '../widgets/settings/settings_accounts.dart';
+import '../widgets/settings/settings_action_bar.dart';
 import '../widgets/settings/settings_appearance.dart';
 import '../widgets/settings/settings_file_sync.dart';
 import '../widgets/settings/settings_files_cache.dart';
@@ -12,9 +13,11 @@ import '../widgets/settings/settings_security.dart';
 import '../widgets/settings/settings_swipe.dart';
 import '../widgets/settings/settings_tabs.dart';
 
-/// Settings, pushed on top of the shell (DESIGN_SYSTEM.md 4's 8-section
+/// Settings, pushed on top of the shell (DESIGN_SYSTEM.md 4's 9-section
 /// order: account card, accounts, security, file sync, files cache,
-/// appearance, tabs, swipe on a file). One column of [SettingsSection]s on
+/// appearance, tabs, action bar, swipe on a file). One column of
+/// [SettingsSection]s (and [SettingsActionBarSection], which has no option
+/// rows of its own to put in one - just the reorder list) on
 /// mobile; a 2-column grid of cards on desktop - see each
 /// `widgets/settings/*.dart` file for a section's own content and any
 /// setting that had to be slotted in or grouped under "Advanced appearance".
@@ -29,6 +32,7 @@ class AccountView extends StatelessWidget {
     SettingsFilesCacheSection(),
     SettingsAppearanceSection(),
     SettingsTabsSection(),
+    SettingsActionBarSection(),
     SettingsSwipeSection(),
   ];
 
@@ -48,7 +52,9 @@ class AccountView extends StatelessWidget {
             ),
       body: SafeArea(
         top: false,
-        child: desktop ? _DesktopGrid(sections: _sections) : _MobileList(sections: _sections),
+        child: desktop
+            ? _DesktopGrid(sections: _sections)
+            : _MobileList(sections: _sections),
       ),
     );
   }
@@ -61,10 +67,18 @@ class _MobileList extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return ListView(
-      padding: const EdgeInsets.fromLTRB(NooSpace.sm, NooSpace.sm, NooSpace.sm, NooSpace.xxl),
+      padding: const EdgeInsets.fromLTRB(
+        NooSpace.sm,
+        NooSpace.sm,
+        NooSpace.sm,
+        NooSpace.xxl,
+      ),
       physics: const BouncingScrollPhysics(),
       children: [
-        for (final section in sections) ...[section, const SizedBox(height: NooSpace.xl)],
+        for (final section in sections) ...[
+          section,
+          const SizedBox(height: NooSpace.xl),
+        ],
       ],
     );
   }
@@ -112,7 +126,10 @@ class _Column extends StatelessWidget {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
-        for (final child in children) ...[child, const SizedBox(height: NooSpace.xl)],
+        for (final child in children) ...[
+          child,
+          const SizedBox(height: NooSpace.xl),
+        ],
       ],
     );
   }

lib/views/favorites_view.dart

@@ -96,13 +96,15 @@ class _FavoritesViewState extends State<FavoritesView> {
   /// The bulk actions shown in the sticky selection toolbar for the
   /// currently-selected items - same set Files/Photos offer.
   List<SelectionAction> _buildSelectionActions(List<NextcloudItem> selected) {
-    return [
+    final actions = [
       SelectionAction(
+        kind: SelectionActionKind.favorite,
         icon: LucideIcons.starOff,
         label: 'Remove from favorites',
         onTap: () => _unfavoriteSelected(selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.share,
         icon: LucideIcons.share2,
         label: 'Share',
         onTap: () => selected.length == 1
@@ -110,32 +112,41 @@ class _FavoritesViewState extends State<FavoritesView> {
             : _shareSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.download,
         icon: LucideIcons.download,
         label: 'Download',
         onTap: () => _downloadSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.delete,
         icon: LucideIcons.trash2,
         label: 'Delete',
         onTap: () => _confirmDeleteSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.copy,
         icon: LucideIcons.copy,
         label: 'Copy',
         onTap: () => _moveOrCopySelected(selected, copy: true),
       ),
       SelectionAction(
+        kind: SelectionActionKind.move,
         icon: LucideIcons.folderInput,
         label: 'Move',
         onTap: () => _moveOrCopySelected(selected, copy: false),
       ),
       if (selected.length == 1)
         SelectionAction(
+          kind: SelectionActionKind.details,
           icon: LucideIcons.info,
           label: 'Details',
           onTap: () => DetailsSheet.show(context, selected.single),
         ),
     ];
+    return orderSelectionActions(
+      actions,
+      context.read<SettingsController>().selectionActionOrder,
+    );
   }
 
   Future<void> _unfavoriteSelected(List<NextcloudItem> items) async {

lib/views/files_view.dart

@@ -419,6 +419,7 @@ class _FilesViewState extends State<FilesView>
     if (pick.isPicking) {
       return [
         SelectionAction(
+          kind: SelectionActionKind.favorite,
           icon: LucideIcons.check,
           label: 'Use ${selected.length} item(s)',
           onTap: () => pick.confirmPick(selected),
@@ -427,13 +428,15 @@ class _FilesViewState extends State<FilesView>
     }
     final allFavorited = selected.every((i) => i.isFavorite);
     final allSynced = selected.every((i) => sync.isPathSynced(i.path));
-    return [
+    final actions = [
       SelectionAction(
+        kind: SelectionActionKind.favorite,
         icon: allFavorited ? LucideIcons.starOff : LucideIcons.star,
         label: allFavorited ? 'Remove from favorites' : 'Favorite',
         onTap: () => _favoriteSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.share,
         icon: LucideIcons.share2,
         label: 'Share',
         onTap: () => selected.length == 1
@@ -441,43 +444,54 @@ class _FilesViewState extends State<FilesView>
             : _shareSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.download,
         icon: LucideIcons.download,
         label: 'Download',
         onTap: () => _downloadSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.delete,
         icon: LucideIcons.trash2,
         label: 'Delete',
         onTap: () => _confirmDeleteSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.copy,
         icon: LucideIcons.copy,
         label: 'Copy',
         onTap: () => _moveOrCopySelected(context, selected, copy: true),
       ),
       SelectionAction(
+        kind: SelectionActionKind.move,
         icon: LucideIcons.folderInput,
         label: 'Move',
         onTap: () => _moveOrCopySelected(context, selected, copy: false),
       ),
       if (selected.length == 1)
         SelectionAction(
+          kind: SelectionActionKind.rename,
           icon: LucideIcons.filePen,
           label: 'Rename',
           onTap: () => _renameItem(selected.single),
         ),
       SelectionAction(
+        kind: SelectionActionKind.sync,
         icon: LucideIcons.hardDriveDownload,
         label: allSynced ? 'Stop syncing to device' : 'Sync to device',
         onTap: () => _toggleSyncSelected(context, sync, selected),
       ),
       if (selected.length == 1)
         SelectionAction(
+          kind: SelectionActionKind.details,
           icon: LucideIcons.info,
           label: 'Details',
           onTap: () => DetailsSheet.show(context, selected.single),
         ),
     ];
+    return orderSelectionActions(
+      actions,
+      context.read<SettingsController>().selectionActionOrder,
+    );
   }
 
   Future<void> _renameItem(NextcloudItem item) async {

lib/views/photos_view.dart

@@ -11,6 +11,7 @@ import '../providers/item_operations.dart';
 import '../providers/photos_controller.dart';
 import '../providers/pick_controller.dart';
 import '../providers/session_controller.dart';
+import '../providers/settings_controller.dart';
 import '../services/download_service.dart';
 import '../theme/design_tokens.dart';
 import '../widgets/details/details_sheet.dart';
@@ -113,6 +114,7 @@ class _PhotosViewState extends State<PhotosView> {
     if (pick.isPicking) {
       return [
         SelectionAction(
+          kind: SelectionActionKind.favorite,
           icon: LucideIcons.check,
           label: 'Use ${selected.length} item(s)',
           onTap: () => pick.confirmPick(selected),
@@ -123,13 +125,15 @@ class _PhotosViewState extends State<PhotosView> {
     // uses for favorite/unfavorite (see `files_view.dart`) rather than a
     // filled heart.
     final allFavorited = selected.every((i) => i.isFavorite);
-    return [
+    final actions = [
       SelectionAction(
+        kind: SelectionActionKind.favorite,
         icon: allFavorited ? LucideIcons.starOff : LucideIcons.star,
         label: allFavorited ? 'Remove from favorites' : 'Favorite',
         onTap: () => _favoriteSelected(selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.share,
         icon: LucideIcons.share2,
         label: 'Share',
         onTap: () => selected.length == 1
@@ -137,32 +141,41 @@ class _PhotosViewState extends State<PhotosView> {
             : _shareSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.download,
         icon: LucideIcons.download,
         label: 'Download',
         onTap: () => _downloadSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.delete,
         icon: LucideIcons.trash2,
         label: 'Delete',
         onTap: () => _confirmDeleteSelected(context, selected),
       ),
       SelectionAction(
+        kind: SelectionActionKind.copy,
         icon: LucideIcons.copy,
         label: 'Copy',
         onTap: () => _moveOrCopySelected(selected, copy: true),
       ),
       SelectionAction(
+        kind: SelectionActionKind.move,
         icon: LucideIcons.folderInput,
         label: 'Move',
         onTap: () => _moveOrCopySelected(selected, copy: false),
       ),
       if (selected.length == 1)
         SelectionAction(
+          kind: SelectionActionKind.details,
           icon: LucideIcons.info,
           label: 'Details',
           onTap: () => DetailsSheet.show(context, selected.single),
         ),
     ];
+    return orderSelectionActions(
+      actions,
+      context.read<SettingsController>().selectionActionOrder,
+    );
   }
 
   /// Splits an already-filtered/sorted list into contiguous month runs