Refactor coverage widgets and improve localization

- Replaced custom navigation buttons with a new CalendarNavButton widget in coverage_calendar_selector.dart.
- Removed the CoverageHeader widget as it is no longer needed.
- Updated CoverageQuickStats to use CoverageStatCard for displaying statistics.
- Refactored CoverageShiftList to utilize ShiftHeader and WorkerRow for better structure.
- Added LateWorkersAlert with improved localization for late worker notifications.
- Introduced CoverageBadge and CoverageStatCard for better encapsulation of UI components.
- Created CoverageStatsHeader for displaying coverage metrics in a consistent format.
- Implemented ShiftHeader to manage shift-related information display.
- Developed WorkerRow to represent individual worker statuses with proper localization.

apps/mobile/packages/core_localization/lib/src/l10n/en.i18n.json

@@ -1692,9 +1692,44 @@
     "todays_cost": "Today's Cost",
     "no_shifts_day": "No shifts scheduled for this day",
     "no_workers_assigned": "No workers assigned yet",
+    "status_checked_in_at": "Checked In at $time",
+    "status_on_site": "On Site",
+    "status_en_route": "En Route",
+    "status_en_route_expected": "En Route - Expected $time",
+    "status_confirmed": "Confirmed",
+    "status_running_late": "Running Late",
+    "status_late": "Late",
+    "status_checked_out": "Checked Out",
+    "status_done": "Done",
+    "status_no_show": "No Show",
+    "status_completed": "Completed",
     "worker_row": {
       "verify": "Verify",
       "verified_message": "Worker attire verified for $name"
+    },
+    "page": {
+      "daily_coverage": "Daily Coverage",
+      "coverage_status": "Coverage Status",
+      "workers": "Workers",
+      "error_occurred": "An error occurred",
+      "retry": "Retry",
+      "shifts": "Shifts"
+    },
+    "calendar": {
+      "prev_week": "\u2190 Prev Week",
+      "today": "Today",
+      "next_week": "Next Week \u2192"
+    },
+    "stats": {
+      "checked_in": "Checked In",
+      "en_route": "En Route"
+    },
+    "alert": {
+      "workers_running_late(count)": {
+        "one": "$count worker is running late",
+        "other": "$count workers are running late"
+      },
+      "auto_backup_searching": "Auto-backup system is searching for replacements."
     }
   },
   "client_reports_common": {

apps/mobile/packages/core_localization/lib/src/l10n/es.i18n.json

@@ -1692,9 +1692,44 @@
     "todays_cost": "Costo de Hoy",
     "no_shifts_day": "No hay turnos programados para este día",
     "no_workers_assigned": "Aún no hay trabajadores asignados",
+    "status_checked_in_at": "Registrado a las $time",
+    "status_on_site": "En Sitio",
+    "status_en_route": "En Camino",
+    "status_en_route_expected": "En Camino - Esperado $time",
+    "status_confirmed": "Confirmado",
+    "status_running_late": "Llegando Tarde",
+    "status_late": "Tarde",
+    "status_checked_out": "Salida Registrada",
+    "status_done": "Hecho",
+    "status_no_show": "No Se Presentó",
+    "status_completed": "Completado",
     "worker_row": {
       "verify": "Verificar",
       "verified_message": "Vestimenta del trabajador verificada para $name"
+    },
+    "page": {
+      "daily_coverage": "Cobertura Diaria",
+      "coverage_status": "Estado de Cobertura",
+      "workers": "Trabajadores",
+      "error_occurred": "Ocurri\u00f3 un error",
+      "retry": "Reintentar",
+      "shifts": "Turnos"
+    },
+    "calendar": {
+      "prev_week": "\u2190 Semana Anterior",
+      "today": "Hoy",
+      "next_week": "Semana Siguiente \u2192"
+    },
+    "stats": {
+      "checked_in": "Registrado",
+      "en_route": "En Camino"
+    },
+    "alert": {
+      "workers_running_late(count)": {
+        "one": "$count trabajador est\u00e1 llegando tarde",
+        "other": "$count trabajadores est\u00e1n llegando tarde"
+      },
+      "auto_backup_searching": "El sistema de respaldo autom\u00e1tico est\u00e1 buscando reemplazos."
     }
   },
   "client_reports_common": {