Stop leaking the shared placeholder facility's phone onto unrelated shifts/jobs

Shift/Job 426-style pages showed 09910540686 — the «نامشخص / ثبت نشده» placeholder
facility's phone, set once and shown on every unnamed-facility listing (and in the
contact modal), even though it isn't that ad's number. Now the facility phone/Bale
is only used as a fallback when the facility is a REAL named employer
(SeoJsonLd.HasRealEmployer); otherwise fall back to the Divar source link (if any)
or «شماره ثبت نشده». Fixed in the /contact modal endpoint and both detail-page
inline reveals.

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

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

@@ -53,7 +53,7 @@
                         @* Numbers from THIS ad (aggregated) — the correct, per-listing contacts. *@
                         <partial name="_ContactList" model="jobContacts" />
                     }
-                    else if (!string.IsNullOrEmpty(f.Phone) || !string.IsNullOrEmpty(f.BaleId))
+                    else if (JobsMedical.Web.Services.SeoJsonLd.HasRealEmployer(f) && (!string.IsNullOrEmpty(f.Phone) || !string.IsNullOrEmpty(f.BaleId)))
                     {
                         @if (!string.IsNullOrEmpty(f.Phone))
                         {

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

@@ -53,7 +53,7 @@
                         @* Numbers from THIS ad (aggregated) — the correct, per-listing contacts. *@
                         <partial name="_ContactList" model="shiftContacts" />
                     }
-                    else if (!string.IsNullOrEmpty(f.Phone) || !string.IsNullOrEmpty(f.BaleId))
+                    else if (JobsMedical.Web.Services.SeoJsonLd.HasRealEmployer(f) && (!string.IsNullOrEmpty(f.Phone) || !string.IsNullOrEmpty(f.BaleId)))
                     {
                         @if (!string.IsNullOrEmpty(f.Phone))
                         {

src/JobsMedical.Web/Program.cs

@@ -411,8 +411,16 @@ app.MapGet("/contact", async (string? type, int id, AppDbContext db, InterestSer
             if (s is null) return Results.NotFound();
             title = s.Role?.Name ?? "تماس";
             items.AddRange(s.Contacts.OrderBy(c => c.SortOrder).Select(c => Item(c.Type, c.Value)));
-            if (items.Count == 0 && !string.IsNullOrWhiteSpace(s.Facility?.Phone)) items.Add(Item(ContactType.Phone, s.Facility!.Phone!));
-            if (!string.IsNullOrWhiteSpace(s.Facility?.BaleId)) items.Add(Item(ContactType.Bale, s.Facility!.BaleId!));
+            // Only fall back to the facility's number for a REAL named employer — the shared
+            // «نامشخص» placeholder's phone is NOT this ad's number (it leaked one number onto many posts).
+            if (SeoJsonLd.HasRealEmployer(s.Facility))
+            {
+                if (items.Count == 0 && !string.IsNullOrWhiteSpace(s.Facility!.Phone)) items.Add(Item(ContactType.Phone, s.Facility.Phone!));
+                if (!string.IsNullOrWhiteSpace(s.Facility!.BaleId)) items.Add(Item(ContactType.Bale, s.Facility.BaleId!));
+            }
+            if (items.Count == 0 && !string.IsNullOrWhiteSpace(s.SourceUrl)
+                && Uri.TryCreate(s.SourceUrl, UriKind.Absolute, out var ss) && ss.Host.Contains("divar"))
+            { fallbackUrl = s.SourceUrl; fallbackLabel = "مشاهده شماره در دیوار ↗"; }
             await interest.LogAsync(InterestEventType.Apply, id);
             break;
         }
@@ -423,8 +431,14 @@ app.MapGet("/contact", async (string? type, int id, AppDbContext db, InterestSer
             if (j is null) return Results.NotFound();
             title = j.Title;
             items.AddRange(j.Contacts.OrderBy(c => c.SortOrder).Select(c => Item(c.Type, c.Value)));
-            if (items.Count == 0 && !string.IsNullOrWhiteSpace(j.Facility?.Phone)) items.Add(Item(ContactType.Phone, j.Facility!.Phone!));
-            if (!string.IsNullOrWhiteSpace(j.Facility?.BaleId)) items.Add(Item(ContactType.Bale, j.Facility!.BaleId!));
+            if (SeoJsonLd.HasRealEmployer(j.Facility))
+            {
+                if (items.Count == 0 && !string.IsNullOrWhiteSpace(j.Facility!.Phone)) items.Add(Item(ContactType.Phone, j.Facility.Phone!));
+                if (!string.IsNullOrWhiteSpace(j.Facility!.BaleId)) items.Add(Item(ContactType.Bale, j.Facility.BaleId!));
+            }
+            if (items.Count == 0 && !string.IsNullOrWhiteSpace(j.SourceUrl)
+                && Uri.TryCreate(j.SourceUrl, UriKind.Absolute, out var js) && js.Host.Contains("divar"))
+            { fallbackUrl = j.SourceUrl; fallbackLabel = "مشاهده شماره در دیوار ↗"; }
             await interest.LogJobAsync(InterestEventType.Apply, id);
             break;
         }