[Map] Render real Neshan map on shift/job detail pages

The detail pages showed a 'map coming later' placeholder. Add a read-only Neshan web map (Leaflet SDK) showing the facility marker when NeshanMapKey is set, plus a 'مسیریابی در نشان' directions link; falls back to coordinates when no key. New _NeshanMap shared partial loads the SDK and inits #facmap. Shift/Job Details models now expose MapKey via SettingsService. Coordinates are emitted with InvariantCulture so the decimal point/digits don't break JS. The facility registration picker already used Neshan; this reuses the same key.

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

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

@@ -122,6 +122,32 @@
                     }
                 }
             </div>
+
+            @if (j.Facility?.Lat is not null && j.Facility?.Lng is not null)
+            {
+                var latS = j.Facility.Lat.Value.ToString(System.Globalization.CultureInfo.InvariantCulture);
+                var lngS = j.Facility.Lng.Value.ToString(System.Globalization.CultureInfo.InvariantCulture);
+                <div class="card card-pad" style="margin-top:16px;">
+                    <h3 style="margin-top:0;">موقعیت مکانی</h3>
+                    @if (!string.IsNullOrEmpty(Model.MapKey))
+                    {
+                        <div id="facmap" data-lat="@latS" data-lng="@lngS" style="height:200px; border-radius:10px; overflow:hidden; border:1px solid var(--line);"></div>
+                    }
+                    else
+                    {
+                        <div style="background:var(--primary-soft); border-radius:10px; height:140px; display:grid; place-items:center; color:var(--primary-dark); text-align:center; padding:10px;">
+                            🗺️<br /><small class="muted" dir="ltr">@latS، @lngS</small>
+                        </div>
+                    }
+                    <a class="btn btn-outline btn-block" style="margin-top:8px;" target="_blank" rel="noopener"
+                       href="https://neshan.org/maps/@(latS),@(lngS),16z">مسیریابی در نشان</a>
+                </div>
+            }
         </aside>
     </div>
 </div>
+
+@if (!string.IsNullOrEmpty(Model.MapKey) && Model.Job?.Facility?.Lat is not null)
+{
+    <partial name="_NeshanMap" model="Model.MapKey" />
+}

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

@@ -11,14 +11,18 @@ public class DetailsModel : PageModel
 {
     private readonly AppDbContext _db;
     private readonly InterestService _interest;
+    private readonly JobsMedical.Web.Services.Scraping.SettingsService _settings;
 
-    public DetailsModel(AppDbContext db, InterestService interest)
+    public DetailsModel(AppDbContext db, InterestService interest,
+        JobsMedical.Web.Services.Scraping.SettingsService settings)
     {
         _db = db;
         _interest = interest;
+        _settings = settings;
     }
 
     public JobOpening? Job { get; private set; }
+    public string? MapKey { get; private set; }
     public bool ShowContact { get; private set; }
     public bool Saved { get; private set; }
     public bool Reported { get; private set; }
@@ -27,6 +31,7 @@ public class DetailsModel : PageModel
     {
         await LoadAsync(id);
         if (Job is null) return NotFound();
+        MapKey = (await _settings.GetAsync()).NeshanMapKey;
         Reported = Request.Query["reported"] == "1";
         await _interest.LogJobAsync(InterestEventType.View, id);
         return Page();