feat(audit): show actor full name + role in logs, click to view details

Logs showed the raw User ID (ActorName was almost never stored) and an English
role enum. Now:

- AuditController resolves each entry's actor to the employee's CURRENT full name
  and localized role at read time (joins Employees with IgnoreQueryFilters, so it
  also names soft-deleted staff and fixes all historical rows — no migration).
- The audit table renders "Full name (Role)" with the role localized (fa/en/ar);
  the name is a button that opens an employee-details dialog.
- New EmployeeDetailsDialog: fetches the employee and shows name, role, phone,
  base salary, and an "Open in HR" link; handles removed staff gracefully.

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

web/dashboard/messages/ar.json

@@ -1,6 +1,7 @@
 {
   "common": {
     "save": "حفظ",
+    "close": "إغلاق",
     "cancel": "إلغاء",
     "confirm": "تأكيد",
     "delete": "حذف",
@@ -462,6 +463,9 @@
     "addEmployee": "إضافة موظف",
     "noEmployees": "لا يوجد موظفون بعد.",
     "employeeCreated": "تمت إضافة الموظف",
+    "employeeDetails": "تفاصيل الموظف",
+    "employeeNotFound": "هذا المستخدم لم يعد نشطًا.",
+    "openInHr": "فتح في الموارد البشرية",
     "save": "حفظ",
     "cancel": "إلغاء",
     "fields": {
@@ -648,6 +652,7 @@
       "colSummary": "الوصف",
       "details": "التفاصيل",
       "systemActor": "النظام",
+      "unknownActor": "مستخدم غير معروف",
       "prevPage": "السابق",
       "nextPage": "التالي"
     }