Add gender requirement (آقا/خانم/فرقی نمی‌کند) + employee (کارجو) panel

- Gender enum + GenderRequirement on Shift/JobOpening + Gender on UserPreferences (migration)
- Employer PostShift/PostJob + admin Review have a gender select; parser detects آقا/خانم/مرد/زن
- Gender badge on cards + detail; gender filter on Shifts/Jobs; gender in preferences
- Recommendations exclude listings whose gender requirement conflicts with the person's gender
- Two panels: new /Me employee (کارجو) panel (recommendations + saved + applied + prefs) alongside /Employer; nav routes by role; /Account/Profile → /Me

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

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

@@ -50,6 +50,10 @@
                 <h3 style="margin-top:0;">مشخصات موقعیت</h3>
                 <div class="info-row"><span class="k">نوع همکاری</span><span class="v">@empLabel</span></div>
                 <div class="info-row"><span class="k">نقش</span><span class="v">@j.Role?.Name</span></div>
+                @if (j.GenderRequirement != Gender.Any)
+                {
+                    <div class="info-row"><span class="k">جنسیت</span><span class="v">@JalaliDate.GenderLabel(j.GenderRequirement)</span></div>
+                }
                 <div class="info-row"><span class="k">حقوق ماهانه</span><span class="v" style="color:var(--primary-dark)">@salary</span></div>
             </div>