Add «آماده به کار» (talent) listing type — workers offering themselves

Adds a third listing kind alongside Shift/Job for healthcare staff who
advertise their own availability (very common in Iranian medical
channels, e.g. "دندانپزشک آماده همکاری… ۵۰٪ تسویه"). These have no
facility; the contact phone is the key field.

- Model: TalentListing (role, person name, years, licensed, city/district,
  area note, availability, gender, comp, phone) + ListingKind.Talent +
  RawListing.LinkedTalentId + DbSet/relations/indexes + EF migration.
- Parser: detect آماده‌به‌کار/جویای کار → Kind=Talent; extract person name,
  years of experience, licensed flag, area («منطقه ۱»), phone. Facility
  name extraction now skipped for talent.
- Validator: talent path scores role + phone + medical (no facility/pay
  required).
- Ingestion auto-publish: creates a TalentListing for talent kind.
- Review (manual publish): Talent option + talent fields; publishes a
  TalentListing without a facility. Shift/Job facility now falls back to a
  shared «نامشخص / ثبت نشده» record when the ad names none — publishing
  never fails on a missing facility.
- Browse /Talent (indexable, filters: city/district/role/gender),
  details /Talent/Details (noindex — personal contact, tel: call button),
  _TalentCard, badge-talent, nav link, home section.
- Sitemap includes /Talent; robots disallows /Talent/Details. Archiver
  expires stale talent listings.

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

src/JobsMedical.Web/Pages/Shared/_Layout.cshtml

@@ -113,6 +113,7 @@
                     <a asp-page="/Index" class="@(path == "/" ? "active" : null)">خانه</a>
                     <a asp-page="/Shifts/Index" data-tour="shifts" class="@(path.StartsWith("/Shifts") ? "active" : null)">شیفت‌ها</a>
                     <a asp-page="/Jobs/Index" data-tour="jobs" class="@(path.StartsWith("/Jobs") ? "active" : null)">استخدام</a>
+                    <a asp-page="/Talent/Index" class="@(path.StartsWith("/Talent") ? "active" : null)">آماده به کار</a>
                     <a asp-page="/Facilities/Index" class="@(path.StartsWith("/Facilities") ? "active" : null)">مراکز درمانی</a>
                     <a asp-page="/Calendar/Index" class="@(path.StartsWith("/Calendar") ? "active" : null)">تقویم هفتگی</a>
                 </nav>

src/JobsMedical.Web/Pages/Shared/_TalentCard.cshtml

@@ -0,0 +1,44 @@
+@model JobsMedical.Web.Models.TalentListing
+@{
+    string comp;
+    if (Model.PayType == JobsMedical.Web.Models.PayType.Percentage && Model.SharePercent is int sp)
+        comp = $"{JalaliDate.ToPersianDigits(sp.ToString())}٪ سهم درآمد";
+    else if (Model.PayAmount is long pa && pa > 0)
+        comp = JalaliDate.Toman(pa) + " مدنظر";
+    else
+        comp = "توافقی";
+
+    var heading = string.IsNullOrWhiteSpace(Model.PersonName)
+        ? (Model.Role?.Name ?? "آماده به کار")
+        : Model.PersonName!;
+    var area = Model.District?.Name ?? Model.AreaNote;
+}
+<a class="card card-pad shift-card" asp-page="/Talent/Details" asp-route-id="@Model.Id">
+    <div class="row" style="justify-content: space-between;">
+        <span class="facility">@heading</span>
+        <span class="badge badge-talent">آماده به کار</span>
+    </div>
+    <div class="row">
+        @if (Model.Role is not null)
+        {
+            <span class="badge badge-type">@Model.Role.Name</span>
+        }
+        @if (Model.YearsExperience is int yrs && yrs > 0)
+        {
+            <span class="badge badge-day">@JalaliDate.ToPersianDigits(yrs.ToString()) سال سابقه</span>
+        }
+        @if (Model.IsLicensed)
+        {
+            <span class="badge badge-verified">پروانه‌دار</span>
+        }
+        @if (Model.Gender != JobsMedical.Web.Models.Gender.Any)
+        {
+            <span class="badge badge-gender">@JalaliDate.GenderLabel(Model.Gender)</span>
+        }
+    </div>
+    <div class="row">📍 @Model.City?.Name@(area is not null ? "، " + area : "")</div>
+    <div class="foot">
+        <span class="pay">@comp</span>
+        <span class="btn btn-outline" style="padding: 6px 14px;">مشاهده و تماس</span>
+    </div>
+</a>