QA hardening: security RLS fixes, Flutter 3.47.5 upgrade, UI/validation fixes

Security — enforce write authorization server-side (was UI/RPC-only):
- it_service_requests RLS: block cross-office read/edit + self-approve (QA-015)
- pass_slips RLS: owner can complete but not self-approve (QA-046)
- swap_requests RLS: scope select/update to participants + admin (QA-047)
- storage: tighten it_service_attachments + task_attachments write/delete (QA-027)
- admin_user_management edge function: allow programmers to manage users (QA-016)

Fixes:
- workforce generator "uncovered shifts" false alarms (QA-043/044)
- network-map VLAN + New-location dialog validation, disabled-until-valid (QA-048)
- de-flake time-of-day-dependent dashboard metrics test (QA-045)

Toolchain:
- upgrade to Flutter 3.47.5 / Dart 3.13.4; font_awesome_flutter 11.0.0,
  flutter_quill 11.6.0, pdfrx 2.6.5; clear resulting deprecations (QA-002)

analyze clean; 139 tests pass; web build succeeds. Report + evidence in docs/qa/.

Note: also carries the in-progress Brick model cleanup already present in the
working tree. QA-001 (AI keys public in the build) is deferred by owner decision.

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

lib/widgets/tasq_adaptive_list.dart

@@ -7,6 +7,7 @@ import 'package:flutter/material.dart';
 import '../theme/app_typography.dart';
 import '../theme/app_surfaces.dart';
 import '../theme/m3_motion.dart';
+import 'app_breakpoints.dart';
 import 'mono_text.dart';
 
 /// A column configuration for the [TasQAdaptiveList] desktop table view.
@@ -359,7 +360,10 @@ class TasQAdaptiveList<T> extends StatelessWidget {
 
     // On medium screens (< 1200px) hide columns that are marked hideOnMedium,
     // preventing the horizontal scrollbar from appearing on tablet viewports.
-    final isMediumScreen = constraints.maxWidth < 1200;
+    // Measure the screen, not this list: after the nav rail and page padding
+    // the list is < 1200px on most desktops, which hid e.g. Tasks' Status.
+    final isMediumScreen =
+        MediaQuery.sizeOf(context).width < AppBreakpoints.desktop;
     final visibleColumns = isMediumScreen
         ? columns.where((c) => !c.hideOnMedium).toList()
         : columns;