[Dashboard] Panel sub-nav menu + clearer profile button (name, not phone digit)

Logged-in panels (admin/employer/job-seeker) now show a sticky role-based dashboard menu (_PanelNav) on Employer/Index, Me/Index and Admin/Overview, with the active section highlighted — so users have an obvious menu and dashboard, not just a hidden avatar. Profile button: avatar fallback shows a 👤 glyph instead of the phone's first digit (the confusing '0'), and the desktop button now shows the user's name (or «حساب من») so it reads as a profile menu.

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

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

@@ -16,7 +16,10 @@
         meName = string.IsNullOrWhiteSpace(info?.FullName) ? info?.Phone : info!.FullName;
         meHasAvatar = info?.HasAvatar ?? false;
     }
-    var meInitial = string.IsNullOrWhiteSpace(meName) ? "؟" : meName!.Trim().Substring(0, 1);
+    // Person glyph when there's no real name yet (avoid showing a phone digit like "0").
+    var meInitial = (!string.IsNullOrWhiteSpace(meName) && !char.IsDigit(meName!.Trim()[0]))
+        ? meName!.Trim().Substring(0, 1) : "👤";
+    var meLabel = (!string.IsNullOrWhiteSpace(meName) && !char.IsDigit(meName!.Trim()[0])) ? meName! : "حساب من";
 
     // --- SEO context ---
     var baseUrl = $"{Context.Request.Scheme}://{Context.Request.Host}";
@@ -116,6 +119,7 @@
                                 {
                                     <span class="avatar-fallback">@meInitial</span>
                                 }
+                                <span class="avatar-name">@meLabel</span>
                                 <span class="avatar-caret">▾</span>
                             </label>
                             <nav class="profile-dropdown">