feat(report): accomplishment report dialog + entry points

Add AccomplishmentReportDialog with programmer/admin modes, date-range
filter (default this month), and include-unapproved toggle. Wire into
DaySheetsTab app-bar action, ApprovalsTab app-bar action, and
ProgrammerDrillDownScreen app-bar button.

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

lib/screens/programmer_tasks/day_sheets/approvals_tab.dart

@@ -15,6 +15,7 @@ import '../../../widgets/app_status_summary.dart';
 import '../../../widgets/tech_chip.dart';
 import '../../reports/report_date_filter.dart';
 import 'day_sheet_snapshot_builder.dart';
+import '../report/accomplishment_report_dialog.dart';
 
 /// Admin tab for reviewing and bulk-approving programmer day sheets.
 ///
@@ -212,6 +213,16 @@ class _ApprovalsTabState extends ConsumerState<ApprovalsTab> {
                   }),
                 ),
               ),
+              const SizedBox(width: 4),
+              IconButton(
+                icon: const Icon(Icons.description_outlined),
+                tooltip: 'Accomplishment Report',
+                onPressed: () => showAccomplishmentReportDialog(
+                  context,
+                  ref,
+                  programmerId: _programmerFilter,
+                ),
+              ),
             ],
           ),
         ),