Add medjobs.ir scraper + employer/employee choice at signup

- MedjobsListingSource: crawls medjobs.ir sitemaps (ad_listing-sitemapN) → fetches ad pages → title+description → engine (dedupe/parse/validate/publish as SEO job pages). Configured in /Admin/Settings (enable + max ads/run).
- Login/register now asks 'کادر درمان' vs 'کارفرما/مرکز': new accounts get Doctor vs FacilityAdmin role; post-login routes to /Me, /Employer, or /Admin accordingly.
- Verified live: medjobs run fetched real ads into the review queue; employer signup → /Employer.

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

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

@@ -105,6 +105,16 @@
             </div>
         </div>
 
+        <div class="filter-group">
+            <label style="display:flex; align-items:center; gap:8px; font-weight:700;">
+                <input type="checkbox" name="MedjobsEnabled" value="true" style="width:auto;" checked="@Model.MedjobsEnabled" />
+                مدجابز (medjobs.ir) — خواندن کامل آگهی‌ها از سایت‌مپ
+            </label>
+            <label style="margin-top:6px;">حداکثر آگهی در هر اجرا</label>
+            <input type="number" name="MedjobsMaxAds" min="1" max="500" value="@Model.MedjobsMaxAds" dir="ltr" />
+            <p class="muted" style="font-size:12px; margin:4px 0 0;">آگهی‌های تکراری به‌صورت خودکار رد می‌شوند؛ هر اجرا فقط آگهی‌های جدید را می‌آورد.</p>
+        </div>
+
         <button type="submit" class="btn btn-accent btn-block btn-lg">ذخیره تنظیمات</button>
     </form>
 </div>

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

@@ -30,6 +30,8 @@ public class SettingsModel : PageModel
     [BindProperty] public bool DivarEnabled { get; set; }
     [BindProperty] public string? DivarCity { get; set; }
     [BindProperty] public string? DivarQueries { get; set; }
+    [BindProperty] public bool MedjobsEnabled { get; set; }
+    [BindProperty] public int MedjobsMaxAds { get; set; } = 40;
     [TempData] public string? Saved { get; set; }
 
     public async Task OnGetAsync()
@@ -52,6 +54,8 @@ public class SettingsModel : PageModel
         DivarEnabled = s.DivarEnabled;
         DivarCity = s.DivarCity;
         DivarQueries = s.DivarQueries;
+        MedjobsEnabled = s.MedjobsEnabled;
+        MedjobsMaxAds = s.MedjobsMaxAds;
     }
 
     public async Task<IActionResult> OnPostAsync()
@@ -75,6 +79,8 @@ public class SettingsModel : PageModel
             DivarEnabled = DivarEnabled,
             DivarCity = DivarCity,
             DivarQueries = DivarQueries,
+            MedjobsEnabled = MedjobsEnabled,
+            MedjobsMaxAds = MedjobsMaxAds,
         });
         Saved = "تنظیمات ذخیره شد.";
         return RedirectToPage();