fix(approvals): show — instead of 0m·0 tasks for pending/disapproved sheets

approvedSnapshot is only populated at approval time; pending and disapproved
sheets had null snapshot so the card always displayed 0m · 0 tasks.

Now totalSecs/taskCount are passed as nullable params from the parent; the
card renders — when no snapshot is available yet.

Also accept camelCase 'daySheets' URL param in parseProgrammerTasksTab
alongside the existing hyphenated 'day-sheets' spelling.

Co-Authored-By: claude-flow <ruv@ruv.net>

lib/screens/programmer_tasks/day_sheets/approvals_tab.dart

@@ -269,6 +269,8 @@ class _ApprovalsTabState extends ConsumerState<ApprovalsTab> {
                             profile: profileById[sheet.programmerId],
                             showCheckbox: _filter == DaySheetStatus.pending,
                             selected: _selected.contains(sheet.id),
+                            totalSecs: sheet.approvedSnapshot?.totalSeconds,
+                            taskCount: sheet.approvedSnapshot?.rows.length,
                             onToggle: _filter == DaySheetStatus.pending
                                 ? (v) => setState(() {
                                       if (v == true) {
@@ -324,6 +326,8 @@ class _SheetApprovalCard extends StatelessWidget {
     required this.selected,
     required this.onToggle,
     required this.onTap,
+    this.totalSecs,
+    this.taskCount,
   });
 
   final ProgrammerDaySheet sheet;
@@ -332,11 +336,12 @@ class _SheetApprovalCard extends StatelessWidget {
   final bool selected;
   final ValueChanged<bool?>? onToggle;
   final VoidCallback onTap;
+  /// Null when no approved snapshot exists yet (pending/disapproved sheets).
+  final int? totalSecs;
+  final int? taskCount;
 
   @override
   Widget build(BuildContext context) {
-    final totalSecs = sheet.approvedSnapshot?.totalSeconds ?? 0;
-    final taskCount = sheet.approvedSnapshot?.rows.length ?? 0;
     final roundNum = sheet.resubmissions + 1;
 
     return Card(
@@ -369,9 +374,13 @@ class _SheetApprovalCard extends StatelessWidget {
                       runSpacing: 4,
                       children: [
                         TechChip(
-                          formatDurationHm(Duration(seconds: totalSecs)),
+                          totalSecs != null
+                              ? formatDurationHm(Duration(seconds: totalSecs!))
+                              : '—',
+                        ),
+                        TechChip(
+                          taskCount != null ? '$taskCount tasks' : '—',
                         ),
-                        TechChip('$taskCount tasks'),
                         if (sheet.autoSubmitted)
                           const TechChip('Auto', status: StatusKind.info)
                         else

lib/screens/programmer_tasks/programmer_tasks_tabs.dart

@@ -42,6 +42,7 @@ ProgrammerTasksTab? parseProgrammerTasksTab(String? q) {
     case 'all':
       return ProgrammerTasksTab.all;
     case 'day-sheets':
+    case 'daySheets':
       return ProgrammerTasksTab.daySheets;
     default:
       return null;