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/fa.json

@@ -1,6 +1,7 @@
 {
   "common": {
     "save": "ذخیره",
+    "close": "بستن",
     "cancel": "انصراف",
     "confirm": "تأیید",
     "delete": "حذف",
@@ -481,6 +482,9 @@
     "addEmployee": "افزودن کارمند",
     "noEmployees": "هنوز کارمندی ثبت نشده است.",
     "employeeCreated": "کارمند اضافه شد",
+    "employeeDetails": "مشخصات کارمند",
+    "employeeNotFound": "این کاربر دیگر فعال نیست.",
+    "openInHr": "مشاهده در منابع انسانی",
     "save": "ذخیره",
     "cancel": "انصراف",
     "fields": {
@@ -667,6 +671,7 @@
       "colSummary": "شرح",
       "details": "جزئیات",
       "systemActor": "سیستم",
+      "unknownActor": "کاربر نامشخص",
       "prevPage": "قبلی",
       "nextPage": "بعدی"
     }