feat: complete client billing UI and staff benefits display (#524, #527)

- Client App: Built dedicated ShiftCompletionReviewPage  and InvoiceReadyPage
- Client App: Wired up invoice summary mapping and parsing logic from Data Connect
- Staff App: Added dynamic BenefitsOverviewPage tracking worker limits matching client mockup
- Staff App: Display progress ring values wired to real VendorBenefitPlan & BenefitsData balances

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

@@ -422,14 +422,53 @@
     "month": "Month",
     "total": "Total",
     "hours": "$count hours",
+    "export_button": "Export All Invoices",
     "rate_optimization_title": "Rate Optimization",
-    "rate_optimization_body": "Save $amount/month by switching 3 shifts",
+    "rate_optimization_save": "Save ",
+    "rate_optimization_amount": "$amount/month",
+    "rate_optimization_shifts": " by switching 3 shifts",
     "view_details": "View Details",
+    "no_invoices_period": "No Invoices for the selected period",
+    "invoices_ready_title": "Invoices Ready",
+    "invoices_ready_subtitle": "You have approved items ready for payment.",
+    "retry": "Retry",
+    "error_occurred": "An error occurred",
     "invoice_history": "Invoice History",
     "view_all": "View all",
-    "export_button": "Export All Invoices",
+    "approved_success": "Invoice approved and payment initiated",
+    "flagged_success": "Invoice flagged for review",
     "pending_badge": "PENDING APPROVAL",
     "paid_badge": "PAID",
+    "all_caught_up": "All caught up!",
+    "no_pending_invoices": "No invoices awaiting approval",
+    "review_and_approve": "Review & Approve",
+    "review_and_approve_subtitle": "Review and approve for payment",
+    "invoice_ready": "Invoice Ready",
+    "total_amount_label": "Total Amount",
+    "hours_suffix": "hours",
+    "avg_rate_suffix": "/hr avg",
+    "stats": {
+      "total": "Total",
+      "workers": "workers",
+      "hrs": "HRS"
+    },
+    "workers_tab": {
+      "title": "Workers ($count)",
+      "search_hint": "Search workers...",
+      "needs_review": "Needs Review ($count)",
+      "all": "All ($count)",
+      "min_break": "min break"
+    },
+    "actions": {
+      "approve_pay": "Approve & Process Payment",
+      "flag_review": "Flag for Review",
+      "download_pdf": "Download Invoice PDF"
+    },
+    "flag_dialog": {
+      "title": "Flag for Review",
+      "hint": "Describe the issue...",
+      "button": "Flag"
+    },
     "timesheets": {
       "title": "Timesheets",
       "approve_button": "Approve",

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

@@ -422,14 +422,53 @@
     "month": "Mes",
     "total": "Total",
     "hours": "$count horas",
+    "export_button": "Exportar Todas las Facturas",
     "rate_optimization_title": "Optimizaci\u00f3n de Tarifas",
-    "rate_optimization_body": "Ahorra $amount/mes cambiando 3 turnos",
+    "rate_optimization_save": "Ahorra ",
+    "rate_optimization_amount": "$amount/mes",
+    "rate_optimization_shifts": " cambiando 3 turnos",
     "view_details": "Ver Detalles",
+    "no_invoices_period": "No hay facturas para el per\u00edodo seleccionado",
+    "invoices_ready_title": "Facturas Listas",
+    "invoices_ready_subtitle": "Tienes elementos aprobados listos para el pago.",
+    "retry": "Reintentar",
+    "error_occurred": "Ocurri\u00f3 un error",
     "invoice_history": "Historial de Facturas",
     "view_all": "Ver todo",
-    "export_button": "Exportar Todas las Facturas",
-    "pending_badge": "PENDIENTE APROBACI\u00d3N",
+    "approved_success": "Factura aprobada y pago iniciado",
+    "flagged_success": "Factura marcada para revisi\u00f3n",
+    "pending_badge": "PENDIENTE",
     "paid_badge": "PAGADO",
+    "all_caught_up": "\u00a1Todo al d\u00eda!",
+    "no_pending_invoices": "No hay facturas esperando aprobaci\u00f3n",
+    "review_and_approve": "Revisar y Aprobar",
+    "review_and_approve_subtitle": "Revisar y aprobar para el pago",
+    "invoice_ready": "Factura Lista",
+    "total_amount_label": "Monto Total",
+    "hours_suffix": "horas",
+    "avg_rate_suffix": "/hr prom",
+    "stats": {
+      "total": "Total",
+      "workers": "trabajadores",
+      "hrs": "HRS"
+    },
+    "workers_tab": {
+      "title": "Trabajadores ($count)",
+      "search_hint": "Buscar trabajadores...",
+      "needs_review": "Necesita Revisi\u00f3n ($count)",
+      "all": "Todos ($count)",
+      "min_break": "min de descanso"
+    },
+    "actions": {
+      "approve_pay": "Aprobar y Procesar Pago",
+      "flag_review": "Marcar para Revisi\u00f3n",
+      "download_pdf": "Descargar PDF de Factura"
+    },
+    "flag_dialog": {
+      "title": "Marcar para Revisi\u00f3n",
+      "hint": "Describe el problema...",
+      "button": "Marcar"
+    },
     "timesheets": {
       "title": "Hojas de Tiempo",
       "approve_button": "Aprobar",