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>

test/programmer_drill_down_test.dart

@@ -0,0 +1,128 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tasq/models/profile.model.dart';
+import 'package:tasq/models/programmer_day_sheet.model.dart';
+import 'package:tasq/providers/leave_provider.dart';
+import 'package:tasq/providers/programmer_day_data_provider.dart';
+import 'package:tasq/providers/programmer_day_sheets_provider.dart';
+import 'package:tasq/providers/programmer_tasks_provider.dart';
+import 'package:tasq/providers/profile_provider.dart';
+import 'package:tasq/screens/programmer_tasks/programmer_drill_down_screen.dart';
+import 'package:tasq/theme/app_theme.dart';
+import 'package:tasq/utils/app_time.dart';
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+ProgrammerDaySheet _sheet({
+  required String id,
+  required String status,
+  required DateTime workDate,
+}) {
+  final now = AppTime.now();
+  return ProgrammerDaySheet(
+    id: id,
+    programmerId: 'u1',
+    status: status,
+    workDate: workDate,
+    autoSubmitted: false,
+    resubmissions: 0,
+    createdAt: now,
+    updatedAt: now,
+  );
+}
+
+Widget _buildApp(String userId, {List<Override> overrides = const []}) {
+  return ProviderScope(
+    overrides: overrides,
+    child: MaterialApp(
+      theme: AppTheme.light(),
+      home: ProgrammerDrillDownScreen(userId: userId),
+    ),
+  );
+}
+
+List<Override> _minimalOverrides({
+  List<ProgrammerDaySheet> sheets = const [],
+}) {
+  final today = DateTime.utc(2026, 9, 28);
+  return [
+    isStrictAdminProvider.overrideWith((ref) => true),
+    profilesProvider.overrideWith((ref) => Stream.value([])),
+    currentProfileProvider.overrideWith((ref) => Stream.value(null)),
+    programmerTasksProvider.overrideWith((ref) => Stream.value([])),
+    programmerRunStatesProvider.overrideWith((ref) => const {}),
+    clockTickerProvider.overrideWith((ref) => Stream.value(today)),
+    todayKeyProvider.overrideWith((ref) => today),
+    leavesProvider.overrideWith((ref) => Stream.value([])),
+    programmerDayDataProvider.overrideWith(
+      (ref, day) => Future.value(
+        DayActivityData(day: day, tasks: [], logsByTask: {}, workLogs: []),
+      ),
+    ),
+    daySheetsForUserProvider.overrideWith((ref, userId) => Stream.value(sheets)),
+  ];
+}
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+void main() {
+  setUpAll(AppTime.initialize);
+
+  group('ProgrammerDrillDownScreen — recent day sheets', () {
+    testWidgets('shows Recent day sheets header when there are sheets',
+        (tester) async {
+      final sheets = [
+        _sheet(
+          id: 's1',
+          status: DaySheetStatus.pending,
+          workDate: DateTime.utc(2026, 9, 27),
+        ),
+        _sheet(
+          id: 's2',
+          status: DaySheetStatus.approved,
+          workDate: DateTime.utc(2026, 9, 26),
+        ),
+      ];
+
+      await tester.pumpWidget(
+        _buildApp('u1', overrides: _minimalOverrides(sheets: sheets)),
+      );
+      await tester.pump();
+
+      // AppSectionHeader renders title in uppercase
+      expect(find.text('RECENT DAY SHEETS'), findsOneWidget);
+    });
+
+    testWidgets('shows both sheet dates', (tester) async {
+      final d1 = DateTime.utc(2026, 9, 27);
+      final d2 = DateTime.utc(2026, 9, 26);
+      final sheets = [
+        _sheet(id: 's1', status: DaySheetStatus.pending, workDate: d1),
+        _sheet(id: 's2', status: DaySheetStatus.approved, workDate: d2),
+      ];
+
+      await tester.pumpWidget(
+        _buildApp('u1', overrides: _minimalOverrides(sheets: sheets)),
+      );
+      await tester.pump();
+
+      expect(find.text(AppTime.formatDate(d1)), findsOneWidget);
+      expect(find.text(AppTime.formatDate(d2)), findsOneWidget);
+    });
+
+    testWidgets('shows RECENT DAY SHEETS even with empty sheets list',
+        (tester) async {
+      await tester.pumpWidget(
+        _buildApp('u1', overrides: _minimalOverrides()),
+      );
+      await tester.pump();
+
+      expect(find.text('RECENT DAY SHEETS'), findsOneWidget);
+    });
+  });
+}