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/Shifts/Details.cshtml

@@ -49,6 +49,10 @@
                 <div class="info-row"><span class="k">ساعت</span><span class="v">@JalaliDate.Time(s.StartTime) تا @JalaliDate.Time(s.EndTime)</span></div>
                 <div class="info-row"><span class="k">مدت</span><span class="v">@JalaliDate.ToPersianDigits(s.DurationHours.ToString("0.#")) ساعت</span></div>
                 <div class="info-row"><span class="k">نقش مورد نیاز</span><span class="v">@(s.Role?.Name ?? s.SpecialtyRequired)</span></div>
+                @if (s.GenderRequirement != Gender.Any)
+                {
+                    <div class="info-row"><span class="k">جنسیت</span><span class="v">@JalaliDate.GenderLabel(s.GenderRequirement)</span></div>
+                }
                 <div class="info-row"><span class="k">پرداخت</span><span class="v" style="color:var(--primary-dark)">@JalaliDate.PayLabel(s.PayType, s.PayAmount, s.SharePercent)</span></div>
                 <div style="padding-top:12px;">
                     <span class="k" style="font-size:13px; color:var(--muted);">بازه ساعت کاری در شبانه‌روز</span>