Admin suite: monitoring dashboard, user management/ban, broadcast, reports, SMS test

- /Admin/Overview: platform monitoring stats (users by role, facilities, listings, applies, push subs, queue, reports, bans)
- /Admin/Users: search/filter + ban/unban (User.IsBanned + reason); banned users blocked at login
- /Admin/Broadcast: send announcement (in-app + web push) to all / staff / employers via NotificationService
- Reports: report button on shift/job detail → /report endpoint → /Admin/Reports (resolve/dismiss)
- Settings: 'send test SMS' button; admin cross-nav links; SMS API config already in place
- migration AdminBanReports; verified overview/users/broadcast/report persist

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/JobsMedical.Web/Pages/Admin/Settings.cshtml

@@ -12,6 +12,14 @@
 </div>
 
 <div class="container section" style="max-width:680px;">
+    @if (Model.SmsTest is not null) { <div class="alert alert-success">@Model.SmsTest</div> }
+    <form method="post" class="card card-pad" style="margin-bottom:14px; display:flex; gap:8px; align-items:end; flex-wrap:wrap;">
+        <div class="filter-group" style="margin:0; flex:1; min-width:160px;">
+            <label>ارسال پیامک آزمایشی به</label>
+            <input type="tel" name="TestPhone" dir="ltr" placeholder="۰۹۱۲ ..." />
+        </div>
+        <button type="submit" asp-page-handler="TestSms" class="btn btn-outline">ارسال آزمایشی</button>
+    </form>
     @if (Model.Saved is not null)
     {
         <div class="alert alert-success">✓ @Model.Saved</div>