Hide facility/location when it's the «نامشخص» placeholder — omit, don't print it

When a listing's facility is the unknown placeholder, don't show «مرکز درمانی
(نامشخص)» anywhere — just leave the location out. Gated on HasRealEmployer:
- cards (shift/job/recommendation): the 🏥 facility line is omitted
- shift detail: H1 drops the «— نامشخص» suffix; title/description use city only;
  «شیفت‌های دیگر این مرکز» hidden; report label generic
- job detail: subtitle drops 🏥, keeps 📍 city; title/description city-only

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

src/JobsMedical.Web/Pages/Jobs/Details.cshtml

@@ -3,13 +3,16 @@
 @{
     var j = Model.Job!;
     var f = j.Facility!;
+    var hasFac = JobsMedical.Web.Services.SeoJsonLd.HasRealEmployer(f);   // false for the «نامشخص» placeholder
     var jobContacts = (j.Contacts ?? new List<JobsMedical.Web.Models.ContactMethod>()).ToList();
     // Map: listing's own approx coords (aggregated) then facility's; aggregated = approximate area.
     var mapLat = j.Lat ?? f.Lat;
     var mapLng = j.Lng ?? f.Lng;
     var mapApprox = j.Source == JobsMedical.Web.Models.ShiftSource.Aggregated;
     ViewData["Title"] = j.Title;
-    ViewData["Description"] = $"{j.Title} در {f.Name}، {f.City?.Name}. موقعیت استخدامی برای {j.Role?.Name}.";
+    ViewData["Description"] = hasFac
+        ? $"{j.Title} در {f.Name}، {f.City?.Name}. موقعیت استخدامی برای {j.Role?.Name}."
+        : $"{j.Title} در {f.City?.Name}. موقعیت استخدامی برای {j.Role?.Name}.";
     // Don't let Google index filled/expired openings (avoids dead "Job for jobs" results).
     if (j.Status != JobsMedical.Web.Models.ShiftStatus.Open) ViewData["NoIndex"] = true;
     string empLabel = j.EmploymentType switch
@@ -37,7 +40,7 @@
             @if (f.IsVerified) { <span class="badge badge-verified">✓ مرکز تأیید شده</span> }
         </div>
         <h1 style="margin-top:8px;">@j.Title</h1>
-        <p class="muted">🏥 @f.Name — 📍 @f.City?.Name@(f.District is not null ? "، " + f.District.Name : "")</p>
+        <p class="muted">@(hasFac ? "🏥 " + f.Name + " — " : "")📍 @f.City?.Name@(f.District is not null ? "، " + f.District.Name : "")</p>
     </div>
 </div>
 
@@ -144,7 +147,7 @@
                     @if (j.Facility is not null)
                     {
                         <details style="margin-top:6px;">
-                            <summary class="muted" style="font-size:12px; cursor:pointer;">شکایت از این مرکز (@j.Facility.Name)</summary>
+                            <summary class="muted" style="font-size:12px; cursor:pointer;">شکایت از این @(hasFac ? "مرکز (" + j.Facility.Name + ")" : "آگهی")</summary>
                             <form method="post" action="/report" style="margin-top:8px;">
                                 <input type="hidden" name="targetType" value="Facility" />
                                 <input type="hidden" name="targetId" value="@j.Facility.Id" />