Talent lifecycle (21-day expiry) + noindex expired job/shift details

- Talent «آماده به کار» now has its own freshness window (21 days, vs 30
  for jobs) since availability goes stale fast; archiver, browse, and home
  use TalentCutoffUtc.
- Expired/filled job openings and past/filled shifts now emit
  robots noindex so Google drops dead listings instead of keeping
  soft-404 pages. (Talent details were already noindex.)

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

src/JobsMedical.Web/Pages/Index.cshtml.cs

@@ -60,7 +60,7 @@ public class IndexModel : PageModel
         LatestTalent = await _db.TalentListings
             .Include(t => t.City).Include(t => t.District).Include(t => t.Role)
             .Where(t => t.Status == ShiftStatus.Open
-                && t.CreatedAt >= JobsMedical.Web.Services.Scraping.ListingPolicy.JobCutoffUtc)
+                && t.CreatedAt >= JobsMedical.Web.Services.Scraping.ListingPolicy.TalentCutoffUtc)
             .OrderByDescending(t => t.CreatedAt)
             .Take(3)
             .ToListAsync();

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

@@ -5,6 +5,8 @@
     var f = j.Facility!;
     ViewData["Title"] = j.Title;
     ViewData["Description"] = $"{j.Title} در {f.Name}، {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
     {
         EmploymentType.FullTime => "تمام‌وقت",

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

@@ -5,6 +5,9 @@
     var f = s.Facility!;
     ViewData["Title"] = $"شیفت {s.SpecialtyRequired} - {f.Name}";
     ViewData["Description"] = $"شیفت {s.SpecialtyRequired} در {f.Name}، {f.City?.Name}، تاریخ {JalaliDate.ToLongDate(s.Date)} از ساعت {JalaliDate.Time(s.StartTime)}.";
+    // Past/filled shifts shouldn't stay in the index as dead pages.
+    if (s.Status != JobsMedical.Web.Models.ShiftStatus.Open || s.Date < DateOnly.FromDateTime(DateTime.UtcNow))
+        ViewData["NoIndex"] = true;
     var (badgeClass, typeLabel) = s.ShiftType switch
     {
         ShiftType.Day => ("badge-day", "شیفت صبح"),

src/JobsMedical.Web/Pages/Talent/Index.cshtml.cs

@@ -34,7 +34,7 @@ public class IndexModel : PageModel
             .Include(t => t.City)
             .Include(t => t.District)
             .Include(t => t.Role)
-            .Where(t => t.Status == ShiftStatus.Open && t.CreatedAt >= ListingPolicy.JobCutoffUtc);
+            .Where(t => t.Status == ShiftStatus.Open && t.CreatedAt >= ListingPolicy.TalentCutoffUtc);
 
         if (CityId is not null) q = q.Where(t => t.CityId == CityId);
         if (DistrictId is not null) q = q.Where(t => t.DistrictId == DistrictId);