Fix «از X تا توافقی» salary display when only the minimum is known

The pay extractor now fills SalaryMin (e.g. «۳۱ م» -> 31M) but leaves SalaryMax null, which rendered
as «از ۳۱,۰۰۰,۰۰۰ تا توافقی ماهانه». Show «از ۳۱,۰۰۰,۰۰۰ تومان ماهانه» (from-only) in that case.

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

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

@@ -25,6 +25,7 @@
     string salary;
     if (j.SalaryMin is null && j.SalaryMax is null) salary = "توافقی";
     else if (j.SalaryMin == j.SalaryMax) salary = JalaliDate.Toman(j.SalaryMin) + " ماهانه";
+    else if (j.SalaryMax is null) salary = "از " + JalaliDate.Toman(j.SalaryMin) + " ماهانه";   // min only — avoid «تا توافقی»
     else salary = $"از {JalaliDate.ToPersianDigits((j.SalaryMin ?? 0).ToString("#,0"))} تا {JalaliDate.Toman(j.SalaryMax)} ماهانه";
     var crumbs = new List<JobsMedical.Web.Services.Crumb> { new("خانه", "/"), new("استخدام", "/Jobs") };
     if (j.Role is not null) crumbs.Add(new(j.Role.Name, "/استخدام/" + JobsMedical.Web.Services.SeoSlug.Of(j.Role.Name)));

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

@@ -10,6 +10,7 @@
     string salary;
     if (Model.SalaryMin is null && Model.SalaryMax is null) salary = "توافقی";
     else if (Model.SalaryMin == Model.SalaryMax) salary = JalaliDate.Toman(Model.SalaryMin) + " ماهانه";
+    else if (Model.SalaryMax is null) salary = "از " + JalaliDate.Toman(Model.SalaryMin) + " ماهانه";   // min only — avoid «تا توافقی»
     else salary = $"از {JalaliDate.ToPersianDigits((Model.SalaryMin ?? 0).ToString("#,0"))} تا {JalaliDate.Toman(Model.SalaryMax)} ماهانه";
     var q = ViewData["q"] as string;
 }