feat(programmer): sheet-driven stats, monitor status, drill-down history

- Wire daySheetsForUserProvider(userId) into ProgrammerDashboard so
  computeProgrammerStats/computeBadges receive real sheet data instead of
  the placeholder const <ProgrammerDaySheet>[].
- Monitor tab: watch allDaySheetsProvider and build sheetStatusByUser map
  for today; pass it to buildMonitorEntries; add "Sheets pending" chip
  (pending + disapproved today) to the summary row.
- ProgrammerDrillDownScreen: add _RecentDaySheetsPanel below the dashboard
  showing the last 10 sheets (date + status pill) with tap-to-daySheetDetail.
- DaySheetDetailScreen (T17 gaps): replace const [] liveRows with
  programmerDayDataProvider(sheet.workDate) built rows for non-approved
  sheets; fix _onApprove timer check to filter only the sheet programmer's
  own tasks (QN-1).
- Add test/programmer_drill_down_test.dart (3 tests, all passing).

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

lib/screens/programmer_tasks/programmer_drill_down_screen.dart

@@ -1,13 +1,20 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
 
 import '../../models/profile.model.dart';
+import '../../models/programmer_day_sheet.model.dart';
 import '../../providers/profile_provider.dart';
+import '../../providers/programmer_day_sheets_provider.dart';
+import '../../theme/app_status_colors.dart';
+import '../../utils/app_time.dart';
+import '../../widgets/app_section_header.dart';
 import '../../widgets/app_state_view.dart';
+import '../../widgets/status_pill.dart';
 import 'dashboard/programmer_dashboard.dart';
 
 /// Admin-only drill-down screen that shows [ProgrammerDashboard] for a
-/// specific user in read-only mode.
+/// specific user in read-only mode, plus their recent day sheets history.
 ///
 /// Route: /programmer-tasks/programmers/:userId
 class ProgrammerDrillDownScreen extends ConsumerWidget {
@@ -46,7 +53,102 @@ class ProgrammerDrillDownScreen extends ConsumerWidget {
 
     return Scaffold(
       appBar: AppBar(title: Text(name)),
-      body: ProgrammerDashboard(userId: userId, readOnly: true),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          // Dashboard fills the upper portion of the screen.
+          Expanded(
+            child: ProgrammerDashboard(userId: userId, readOnly: true),
+          ),
+          const Divider(height: 1),
+          // Recent day sheets section — fixed-height scrollable panel.
+          _RecentDaySheetsPanel(userId: userId),
+        ],
+      ),
+    );
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Recent sheets panel
+// ---------------------------------------------------------------------------
+
+class _RecentDaySheetsPanel extends ConsumerWidget {
+  const _RecentDaySheetsPanel({required this.userId});
+
+  final String userId;
+
+  StatusKind _kindFor(String status) => switch (status) {
+        DaySheetStatus.approved => StatusKind.success,
+        DaySheetStatus.pending => StatusKind.info,
+        DaySheetStatus.disapproved => StatusKind.warning,
+        _ => StatusKind.neutral,
+      };
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final sheetsAsync = ref.watch(daySheetsForUserProvider(userId));
+    final allSheets = sheetsAsync.valueOrNull ?? const [];
+    // Show the most-recent 10 sheets (provider already orders newest-first).
+    final recent = allSheets.length > 10 ? allSheets.sublist(0, 10) : allSheets;
+
+    final cs = Theme.of(context).colorScheme;
+    final tt = Theme.of(context).textTheme;
+
+    return ConstrainedBox(
+      constraints: const BoxConstraints(maxHeight: 320),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 12, 16, 0),
+            child: AppSectionHeader('Recent day sheets'),
+          ),
+          if (recent.isEmpty)
+            Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+              child: Text(
+                'No day sheets yet.',
+                style: tt.bodySmall?.copyWith(color: cs.onSurfaceVariant),
+              ),
+            )
+          else
+            Flexible(
+              child: ListView.builder(
+                padding: const EdgeInsets.only(bottom: 12),
+                itemCount: recent.length,
+                itemBuilder: (context, i) {
+                  final sheet = recent[i];
+                  return InkWell(
+                    onTap: () => context.pushNamed(
+                      'daySheetDetail',
+                      pathParameters: {'id': sheet.id},
+                    ),
+                    child: Padding(
+                      padding: const EdgeInsets.symmetric(
+                          horizontal: 16, vertical: 8),
+                      child: Row(
+                        children: [
+                          Expanded(
+                            child: Text(
+                              AppTime.formatDate(sheet.workDate),
+                              style: tt.bodyMedium,
+                            ),
+                          ),
+                          StatusPill.kind(
+                            _kindFor(sheet.status),
+                            label: DaySheetStatus.label(sheet.status),
+                          ),
+                        ],
+                      ),
+                    ),
+                  );
+                },
+              ),
+            ),
+        ],
+      ),
     );
   }
 }