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/en.json

@@ -0,0 +1,57 @@
+{
+    "Dashboard": "Dashboard",
+    "Save": "Save",
+    "Cancel": "Cancel",
+    "Delete": "Delete",
+    "Edit": "Edit",
+    "Create": "Create",
+    "Search": "Search",
+    "Filters": "Filters",
+    "Reset": "Reset",
+    "Yes": "Yes",
+    "No": "No",
+    "Loading": "Loading...",
+    "Empty": "No results",
+    "Settings": "Settings",
+    "Profile": "Profile",
+    "Logout": "Logout",
+    "Welcome": "Welcome",
+    "Total": "Total",
+    "Date": "Date",
+    "Status": "Status",
+    "Actions": "Actions",
+    "Notifications": "Notifications",
+
+    "Clienți": "Clients",
+    "Mașini": "Vehicles",
+    "Cereri": "Leads",
+    "Pâlnie": "Pipeline",
+    "Calendar": "Calendar",
+    "Programări": "Appointments",
+    "Fișe lucru": "Work orders",
+    "Kanban": "Kanban",
+    "Norme-ore": "Labor times",
+    "Depozit": "Inventory",
+    "Furnizori": "Suppliers",
+    "Achiziții": "Purchases",
+    "Plăți": "Payments",
+    "Cheltuieli": "Expenses",
+    "Salarii": "Payroll",
+    "Tehnicieni": "Technicians",
+    "Marketing": "Marketing",
+    "Mesaje": "Messages",
+    "Rapoarte": "Reports",
+    "Recomandări": "Recommendations",
+    "Încărcare STO": "Workshop load",
+    "Procentaj": "Markup",
+    "VIN-căutare": "VIN search",
+    "Integrări": "Integrations",
+    "Backup": "Backup",
+    "Asistent AI": "AI Assistant",
+    "Setări companie": "Company settings",
+    "Utilizatori": "Users",
+    "Jurnal": "Audit log",
+    "Telefonie": "Calls",
+    "Finanțe": "Finance",
+    "Site PSauto": "Public site"
+}