Add staff reliability stats & shift location

Introduce staff reliability statistics and location fields across domain, data, and UI. Changes include:

- New API endpoint StaffEndpoints.profileStats ('/staff/profile/stats').
- New domain entity StaffReliabilityStats with JSON (de)serialization and export.
- Profile repository: getReliabilityStats implementation and interface addition.
- New GetReliabilityStatsUseCase and DI registration in StaffProfileModule.
- ProfileCubit/state: load and store reliabilityStats; UI wired to display ReliabilityStatsCard and ReliabilityScoreBar using state values.
- Coverage/shift updates: Added AssignedWorker.hasReview to track if a worker was reviewed; added locationName/locationAddress to ShiftWithWorkers and show location in ShiftHeader; hide rate button if worker.hasReview.
- Clock-in handling: treat backend ALREADY_CLOCKED_IN (409) as idempotent by re-fetching attendance and emitting success when appropriate.

These changes wire backend stats through repository/usecase/cubit to the profile UI and add shift location and review-awareness to client views.

apps/mobile/packages/features/client/client_coverage/lib/src/presentation/widgets/coverage_shift_list.dart

@@ -161,6 +161,7 @@ class _CoverageShiftListState extends State<CoverageShiftList> {
             children: <Widget>[
               ShiftHeader(
                 title: shift.roleName,
+                locationName: shift.locationName,
                 startTime: _formatTime(shift.timeRange.startsAt),
                 current: shift.assignedWorkerCount,
                 total: shift.requiredWorkerCount,
@@ -226,9 +227,10 @@ class _CoverageShiftListState extends State<CoverageShiftList> {
                   worker: worker,
                   shiftStartTime: _formatTime(shift.timeRange.startsAt),
                   showRateButton:
-                      worker.status == AssignmentStatus.checkedIn ||
-                          worker.status == AssignmentStatus.checkedOut ||
-                          worker.status == AssignmentStatus.completed,
+                      !worker.hasReview &&
+                          (worker.status == AssignmentStatus.checkedIn ||
+                              worker.status == AssignmentStatus.checkedOut ||
+                              worker.status == AssignmentStatus.completed),
                   showCancelButton:
                       DateTime.now().isAfter(shift.timeRange.startsAt) &&
                           (worker.status == AssignmentStatus.noShow ||

apps/mobile/packages/features/client/client_coverage/lib/src/presentation/widgets/shift_header.dart

@@ -21,6 +21,7 @@ class ShiftHeader extends StatelessWidget {
     required this.lateCount,
     required this.isExpanded,
     required this.onToggle,
+    this.locationName,
     super.key,
   });
 
@@ -57,6 +58,9 @@ class ShiftHeader extends StatelessWidget {
   /// Callback invoked when the header is tapped to expand or collapse.
   final VoidCallback onToggle;
 
+  /// Optional location or hub name for the shift.
+  final String? locationName;
+
   /// Returns the status colour based on [coveragePercent].
   ///
   /// Green for >= 100 %, yellow for >= 80 %, red otherwise.
@@ -110,6 +114,29 @@ class ShiftHeader extends StatelessWidget {
                         title,
                         style: UiTypography.body1b.textPrimary,
                       ),
+                      if (locationName != null &&
+                          locationName!.isNotEmpty) ...<Widget>[
+                        const SizedBox(height: 2),
+                        Row(
+                          children: <Widget>[
+                            const Icon(
+                              UiIcons.mapPin,
+                              size: 10,
+                              color: UiColors.textSecondary,
+                            ),
+                            const SizedBox(width: 4),
+                            Expanded(
+                              child: Text(
+                                locationName!,
+                                style: UiTypography.body3r.copyWith(
+                                  color: UiColors.textSecondary,
+                                ),
+                                overflow: TextOverflow.ellipsis,
+                              ),
+                            ),
+                          ],
+                        ),
+                      ],
                       const SizedBox(height: UiConstants.space1),
                       Row(
                         children: <Widget>[