Deploy 1: i18n + Notifications + Global Search + Tests

- SetLocale middleware (ro/ru/en, session-first, user-persisted)
- Lang switcher in topbar (Filament render hook USER_MENU_BEFORE)
- POST /locale/{lang} route persists to user.locale + session
- Database notifications enabled on tenant panel (30s polling)
- GlobalSearch (Cmd+K / Ctrl+K) on Client, Vehicle, WorkOrder, Lead, Part
- Tests: TenantIsolation (4), AuthFlow (2), WorkOrderCalc (3), MarkupRule (3)

lang/ro.json

@@ -0,0 +1,24 @@
+{
+    "Dashboard": "Tablou de bord",
+    "Save": "Salvează",
+    "Cancel": "Anulează",
+    "Delete": "Șterge",
+    "Edit": "Editează",
+    "Create": "Creează",
+    "Search": "Caută",
+    "Filters": "Filtre",
+    "Reset": "Resetează",
+    "Yes": "Da",
+    "No": "Nu",
+    "Loading": "Se încarcă...",
+    "Empty": "Niciun rezultat",
+    "Settings": "Setări",
+    "Profile": "Profil",
+    "Logout": "Ieșire",
+    "Welcome": "Bine ai venit",
+    "Total": "Total",
+    "Date": "Dată",
+    "Status": "Status",
+    "Actions": "Acțiuni",
+    "Notifications": "Notificări"
+}