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/monitor/monitor_tab.dart

@@ -2,11 +2,14 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
+import '../../../models/programmer_day_sheet.model.dart';
 import '../../../providers/leave_provider.dart';
 import '../../../providers/pass_slip_provider.dart';
 import '../../../providers/profile_provider.dart';
 import '../../../providers/programmer_day_data_provider.dart';
+import '../../../providers/programmer_day_sheets_provider.dart';
 import '../../../utils/app_time.dart';
+import '../../../utils/programmer_daily_time.dart';
 import '../../../utils/staff_presence.dart';
 import '../../../widgets/app_status_summary.dart';
 import '../../../theme/app_status_colors.dart';
@@ -28,6 +31,7 @@ class MonitorTab extends ConsumerWidget {
     final runStates = ref.watch(programmerRunStatesProvider);
     final leavesAsync = ref.watch(leavesProvider);
     final passSlipsAsync = ref.watch(passSlipsProvider);
+    final allSheetsAsync = ref.watch(allDaySheetsProvider);
 
     final profiles = profilesAsync.valueOrNull ?? [];
     final programmerProfiles =
@@ -41,6 +45,20 @@ class MonitorTab extends ConsumerWidget {
     final activeLeaves = activeLeaveByUser(leaves, now);
     final activePassSlips = activePassSlipByUser(passSlips);
 
+    // Build sheetStatusByUser for today: programmerId → status.
+    final allSheets = allSheetsAsync.valueOrNull ?? const <ProgrammerDaySheet>[];
+    final sheetStatusByUser = <String, String>{};
+    var sheetsPending = 0;
+    for (final sheet in allSheets) {
+      if (sheet.workDate == manilaDay(now)) {
+        sheetStatusByUser[sheet.programmerId] = sheet.status;
+        if (sheet.status == DaySheetStatus.pending ||
+            sheet.status == DaySheetStatus.disapproved) {
+          sheetsPending++;
+        }
+      }
+    }
+
     if (dayDataAsync.isLoading && !dayDataAsync.hasValue) {
       return const Center(child: CircularProgressIndicator());
     }
@@ -55,7 +73,7 @@ class MonitorTab extends ConsumerWidget {
         runStates: runStates,
         leaves: activeLeaves,
         passSlips: activePassSlips,
-        sheetStatusByUser: const {},
+        sheetStatusByUser: sheetStatusByUser,
         projectNames: const {},
         profileNames: profileNames,
         now: now,
@@ -102,6 +120,11 @@ class MonitorTab extends ConsumerWidget {
         count: away,
         kind: StatusKind.info,
       ),
+      AppStatusSummaryItem(
+        label: 'Sheets pending',
+        count: sheetsPending,
+        kind: StatusKind.warning,
+      ),
     ];
 
     return LayoutBuilder(