feat: budget subcategories, customizable categories, and English log messages (#86)

- Budget categories and subcategories moved to database tables (migration 15+16)
- Expense categories migrated from German strings to stable English slugs
- New `/budget/categories` and `/budget/categories/:key/subcategories` POST endpoints
- Budget modal now shows subcategory selector with inline add-new buttons
- Added 35 predefined subcategories across 8 expense categories (housing, food,
  transport, personal_health, leisure, shopping_clothing, education, financial_other)
- CSV export updated to include subcategory column and English headers
- All server log messages and error strings translated to English
- i18n: all 14 non-German locales extended with new budget category/subcategory keys
- Service worker cache version bumped (v52/v47)

Contributed by @rafaelfoster

Co-Authored-By: Rafael Foster <rafaelfoster@users.noreply.github.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

public/locales/ar.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "التحويلات والهدايا",
     "catGovernmentBenefits": "المزايا الاجتماعية",
     "catOtherIncome": "دخل آخر",
-    "loadingIndicator": "جارٍ التحميل…"
+    "loadingIndicator": "جارٍ التحميل…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "الإعدادات",

public/locales/de.json

@@ -469,11 +469,11 @@
     "trendNeutral": "- wie {{month}}",
     "validAmountRequired": "Gültigen Betrag eingeben",
     "dateRequired": "Datum ist erforderlich",
-    "catFood": "Lebensmittel",
+    "catFood": "Ernährung",
     "catRent": "Miete",
     "catInsurance": "Versicherung",
     "catMobility": "Mobilität",
-    "catLeisure": "Freizeit",
+    "catLeisure": "Freizeit und Unterhaltung",
     "catClothing": "Kleidung",
     "catHealth": "Gesundheit",
     "catEducation": "Bildung",
@@ -483,7 +483,54 @@
     "catTransferGiftIncome": "Geschenke & Transfers",
     "catGovernmentBenefits": "Sozialleistungen",
     "catOtherIncome": "Sonstiges Einkommen",
-    "loadingIndicator": "Lade…"
+    "loadingIndicator": "Lade…",
+    "subcategoryLabel": "Unterkategorie",
+    "catHousing": "Wohnen / Zuhause",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Körperpflege / Gesundheit",
+    "catShoppingClothing": "Einkäufe und Kleidung",
+    "catFinancialOther": "Finanzdienstleistungen und Sonstiges",
+    "subcatRentMortgage": "Miete / Kreditrate",
+    "subcatCondominium": "Hausgeld",
+    "subcatUtilities": "Strom / Wasser / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Telefon",
+    "subcatRenovationMaintenance": "Renovierung / Instandhaltung",
+    "subcatCleaning": "Reinigung",
+    "subcatGroceries": "Supermarkt",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bäckerei",
+    "subcatFuel": "Kraftstoff",
+    "subcatParkingTolls": "Parken / Maut",
+    "subcatPublicTransport": "Öffentliche Verkehrsmittel",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Wartung / Versicherung",
+    "subcatPharmacy": "Apotheke",
+    "subcatHealthInsurance": "Krankenversicherung",
+    "subcatGymSports": "Fitnessstudio / Sport",
+    "subcatBeautyCosmetics": "Schönheit / Kosmetik",
+    "subcatTravel": "Reisen",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Veranstaltungen",
+    "subcatHobbies": "Hobbys",
+    "subcatClothesShoes": "Kleidung / Schuhe",
+    "subcatElectronics": "Elektronik",
+    "subcatGifts": "Geschenke",
+    "subcatCoursesCollege": "Kurse / Hochschule",
+    "subcatSchoolSupplies": "Schulmaterial",
+    "subcatLanguages": "Sprachen",
+    "subcatLoansInterest": "Kredite / Zinsen",
+    "subcatBankFees": "Bankgebühren",
+    "subcatInsuranceOther": "Versicherungen",
+    "subcatInvestments": "Investitionen",
+    "subcatTaxes": "Steuern",
+    "metaLoadError": "Budget-Kategorien konnten nicht geladen werden.",
+    "addCategory": "+ Kategorie",
+    "addSubcategory": "+ Unterkategorie",
+    "newCategoryPrompt": "Name der neuen Kategorie:",
+    "newSubcategoryPrompt": "Name der neuen Unterkategorie:",
+    "categoryAddedToast": "Kategorie hinzugefügt.",
+    "subcategoryAddedToast": "Unterkategorie hinzugefügt."
   },
   "settings": {
     "title": "Einstellungen",

public/locales/el.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Μεταφορές και δώρα",
     "catGovernmentBenefits": "Κοινωνικές παροχές",
     "catOtherIncome": "Άλλο εισόδημα",
-    "loadingIndicator": "Φόρτωση…"
+    "loadingIndicator": "Φόρτωση…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "Ρυθμίσεις",

public/locales/en.json

@@ -463,11 +463,11 @@
     "trendNeutral": "- same as {{month}}",
     "validAmountRequired": "Please enter a valid amount",
     "dateRequired": "Date is required",
-    "catFood": "Groceries",
+    "catFood": "Food",
     "catRent": "Rent",
     "catInsurance": "Insurance",
     "catMobility": "Transport",
-    "catLeisure": "Leisure",
+    "catLeisure": "Leisure and Entertainment",
     "catClothing": "Clothing",
     "catHealth": "Health",
     "catEducation": "Education",
@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Transfer & Gift Income",
     "catGovernmentBenefits": "Government & Social Benefits",
     "catOtherIncome": "Other Income",
-    "loadingIndicator": "Loading…"
+    "loadingIndicator": "Loading…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "Settings",

public/locales/es.json

@@ -467,7 +467,7 @@
     "catRent": "Alquiler",
     "catInsurance": "Seguro",
     "catMobility": "Movilidad",
-    "catLeisure": "Ocio",
+    "catLeisure": "Ocio y entretenimiento",
     "catClothing": "Ropa",
     "catHealth": "Salud",
     "catEducation": "Educación",
@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Transferencias y Regalos",
     "catGovernmentBenefits": "Prestaciones Sociales",
     "catOtherIncome": "Otros Ingresos",
-    "loadingIndicator": "Cargando…"
+    "loadingIndicator": "Cargando…",
+    "subcategoryLabel": "Subcategoría",
+    "catHousing": "Vivienda / Casa",
+    "catTransport": "Transporte",
+    "catPersonalHealth": "Cuidado personal / Salud",
+    "catShoppingClothing": "Compras y ropa",
+    "catFinancialOther": "Servicios financieros y otros",
+    "subcatRentMortgage": "Alquiler / Hipoteca",
+    "subcatCondominium": "Comunidad",
+    "subcatUtilities": "Luz / Agua / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Teléfono",
+    "subcatRenovationMaintenance": "Reforma / Mantenimiento",
+    "subcatCleaning": "Limpieza",
+    "subcatGroceries": "Supermercado",
+    "subcatRestaurantsBars": "Restaurantes / Bares",
+    "subcatSnacksFastFood": "Snacks / Comida rápida",
+    "subcatBakery": "Panadería",
+    "subcatFuel": "Combustible",
+    "subcatParkingTolls": "Aparcamiento / Peajes",
+    "subcatPublicTransport": "Transporte público",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Mantenimiento / Seguro",
+    "subcatPharmacy": "Farmacia",
+    "subcatHealthInsurance": "Seguro médico",
+    "subcatGymSports": "Gimnasio / Deportes",
+    "subcatBeautyCosmetics": "Belleza / Cosmética",
+    "subcatTravel": "Viajes",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Eventos",
+    "subcatHobbies": "Aficiones",
+    "subcatClothesShoes": "Ropa / Calzado",
+    "subcatElectronics": "Electrónica",
+    "subcatGifts": "Regalos",
+    "subcatCoursesCollege": "Cursos / Universidad",
+    "subcatSchoolSupplies": "Material escolar",
+    "subcatLanguages": "Idiomas",
+    "subcatLoansInterest": "Préstamos / Intereses",
+    "subcatBankFees": "Comisiones bancarias",
+    "subcatInsuranceOther": "Seguros",
+    "subcatInvestments": "Inversiones",
+    "subcatTaxes": "Impuestos",
+    "metaLoadError": "No se pudieron cargar las categorías del presupuesto.",
+    "addCategory": "+ categoría",
+    "addSubcategory": "+ subcategoría",
+    "newCategoryPrompt": "Nombre de la nueva categoría:",
+    "newSubcategoryPrompt": "Nombre de la nueva subcategoría:",
+    "categoryAddedToast": "Categoría añadida.",
+    "subcategoryAddedToast": "Subcategoría añadida."
   },
   "settings": {
     "title": "Ajustes",

public/locales/fr.json

@@ -467,7 +467,7 @@
     "catRent": "Loyer",
     "catInsurance": "Assurance",
     "catMobility": "Transport",
-    "catLeisure": "Loisirs",
+    "catLeisure": "Loisirs et divertissement",
     "catClothing": "Vêtements",
     "catHealth": "Santé",
     "catEducation": "Éducation",
@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Transferts et Cadeaux",
     "catGovernmentBenefits": "Allocations Sociales",
     "catOtherIncome": "Autres Revenus",
-    "loadingIndicator": "Chargement…"
+    "loadingIndicator": "Chargement…",
+    "subcategoryLabel": "Sous-catégorie",
+    "catHousing": "Logement / Maison",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Soins personnels / Santé",
+    "catShoppingClothing": "Achats et vêtements",
+    "catFinancialOther": "Services financiers et autres",
+    "subcatRentMortgage": "Loyer / Crédit immobilier",
+    "subcatCondominium": "Copropriété",
+    "subcatUtilities": "Électricité / Eau / Gaz",
+    "subcatInternetTvPhone": "Internet / TV / Téléphone",
+    "subcatRenovationMaintenance": "Rénovation / Entretien",
+    "subcatCleaning": "Nettoyage",
+    "subcatGroceries": "Supermarché",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast-food",
+    "subcatBakery": "Boulangerie",
+    "subcatFuel": "Carburant",
+    "subcatParkingTolls": "Parking / Péages",
+    "subcatPublicTransport": "Transports publics",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Entretien / Assurance",
+    "subcatPharmacy": "Pharmacie",
+    "subcatHealthInsurance": "Assurance santé",
+    "subcatGymSports": "Salle de sport / Sports",
+    "subcatBeautyCosmetics": "Beauté / Cosmétiques",
+    "subcatTravel": "Voyages",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Événements",
+    "subcatHobbies": "Loisirs",
+    "subcatClothesShoes": "Vêtements / Chaussures",
+    "subcatElectronics": "Électronique",
+    "subcatGifts": "Cadeaux",
+    "subcatCoursesCollege": "Cours / Université",
+    "subcatSchoolSupplies": "Fournitures scolaires",
+    "subcatLanguages": "Langues",
+    "subcatLoansInterest": "Prêts / Intérêts",
+    "subcatBankFees": "Frais bancaires",
+    "subcatInsuranceOther": "Assurances",
+    "subcatInvestments": "Investissements",
+    "subcatTaxes": "Impôts",
+    "metaLoadError": "Impossible de charger les catégories du budget.",
+    "addCategory": "+ catégorie",
+    "addSubcategory": "+ sous-catégorie",
+    "newCategoryPrompt": "Nom de la nouvelle catégorie :",
+    "newSubcategoryPrompt": "Nom de la nouvelle sous-catégorie :",
+    "categoryAddedToast": "Catégorie ajoutée.",
+    "subcategoryAddedToast": "Sous-catégorie ajoutée."
   },
   "settings": {
     "title": "Paramètres",

public/locales/hi.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "स्थानांतरण और उपहार",
     "catGovernmentBenefits": "सामाजिक लाभ",
     "catOtherIncome": "अन्य आय",
-    "loadingIndicator": "लोड हो रहा है…"
+    "loadingIndicator": "लोड हो रहा है…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "सेटिंग्स",

public/locales/it.json

@@ -43,7 +43,7 @@
     "main": "Navigazione principale",
     "navigation": "Navigazione",
     "quickActions": "Azioni rapide",
-    "recipes": "Ricette",
+    "recipes": "Recipes",
     "more": "Altro"
   },
   "dashboard": {
@@ -255,10 +255,10 @@
     "recipeUrlLabel": "Link ricetta (opzionale)",
     "recipeUrlPlaceholder": "https://…",
     "openRecipe": "Apri ricetta",
-    "savedRecipeLabel": "Ricette salvate",
-    "savedRecipePlaceholder": "Seleziona ricetta",
-    "saveAsRecipe": "Salva come ricetta",
-    "recipeScaleLabel": "Scala ingredienti"
+    "savedRecipeLabel": "Saved recipe",
+    "savedRecipePlaceholder": "Select recipe",
+    "saveAsRecipe": "Save as recipe",
+    "recipeScaleLabel": "Scale ingredients"
   },
   "calendar": {
     "title": "Calendario",
@@ -463,11 +463,11 @@
     "trendNeutral": "- come {{month}}",
     "validAmountRequired": "Inserisci un importo valido",
     "dateRequired": "La data è obbligatoria",
-    "catFood": "Spesa alimentare",
+    "catFood": "Alimentazione",
     "catRent": "Affitto",
     "catInsurance": "Assicurazione",
     "catMobility": "Trasporti",
-    "catLeisure": "Tempo libero",
+    "catLeisure": "Tempo libero e intrattenimento",
     "catClothing": "Abbigliamento",
     "catHealth": "Salute",
     "catEducation": "Istruzione",
@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Trasferimenti e Regali",
     "catGovernmentBenefits": "Prestazioni Sociali",
     "catOtherIncome": "Altro Reddito",
-    "loadingIndicator": "Caricamento…"
+    "loadingIndicator": "Caricamento…",
+    "subcategoryLabel": "Sottocategoria",
+    "catHousing": "Abitazione / Casa",
+    "catTransport": "Trasporti",
+    "catPersonalHealth": "Cura personale / Salute",
+    "catShoppingClothing": "Acquisti e abbigliamento",
+    "catFinancialOther": "Servizi finanziari e altro",
+    "subcatRentMortgage": "Affitto / Mutuo",
+    "subcatCondominium": "Condominio",
+    "subcatUtilities": "Luce / Acqua / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Telefono",
+    "subcatRenovationMaintenance": "Ristrutturazione / Manutenzione",
+    "subcatCleaning": "Pulizia",
+    "subcatGroceries": "Supermercato",
+    "subcatRestaurantsBars": "Ristoranti / Bar",
+    "subcatSnacksFastFood": "Snack / Fast food",
+    "subcatBakery": "Panetteria",
+    "subcatFuel": "Carburante",
+    "subcatParkingTolls": "Parcheggio / Pedaggi",
+    "subcatPublicTransport": "Trasporto pubblico",
+    "subcatAppsTaxi": "App / Taxi",
+    "subcatMaintenanceInsurance": "Manutenzione / Assicurazione",
+    "subcatPharmacy": "Farmacia",
+    "subcatHealthInsurance": "Assicurazione sanitaria",
+    "subcatGymSports": "Palestra / Sport",
+    "subcatBeautyCosmetics": "Bellezza / Cosmetici",
+    "subcatTravel": "Viaggi",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Eventi",
+    "subcatHobbies": "Hobby",
+    "subcatClothesShoes": "Vestiti / Scarpe",
+    "subcatElectronics": "Elettronica",
+    "subcatGifts": "Regali",
+    "subcatCoursesCollege": "Corsi / Università",
+    "subcatSchoolSupplies": "Materiale scolastico",
+    "subcatLanguages": "Lingue",
+    "subcatLoansInterest": "Prestiti / Interessi",
+    "subcatBankFees": "Commissioni bancarie",
+    "subcatInsuranceOther": "Assicurazioni",
+    "subcatInvestments": "Investimenti",
+    "subcatTaxes": "Imposte",
+    "metaLoadError": "Impossibile caricare le categorie del budget.",
+    "addCategory": "+ categoria",
+    "addSubcategory": "+ sottocategoria",
+    "newCategoryPrompt": "Nome della nuova categoria:",
+    "newSubcategoryPrompt": "Nome della nuova sottocategoria:",
+    "categoryAddedToast": "Categoria aggiunta.",
+    "subcategoryAddedToast": "Sottocategoria aggiunta."
   },
   "settings": {
     "title": "Impostazioni",
@@ -659,28 +706,28 @@
     "unitMonths": "mesi"
   },
   "recipes": {
-    "title": "Ricette",
-    "addRecipe": "Aggiungi ricetta",
-    "editRecipe": "Modifica ricetta",
-    "emptyTitle": "Nessuna ricetta",
-    "emptyDescription": "Salva le tue ricette preferite e riutilizzale nella pianificazione dei pasti.",
-    "titleLabel": "Titolo *",
-    "titlePlaceholder": "es. Pasta Carbonara",
-    "notesLabel": "Note",
-    "notesPlaceholder": "Opzionale...",
-    "urlLabel": "Link della ricetta",
+    "title": "Recipes",
+    "addRecipe": "Add recipe",
+    "editRecipe": "Edit recipe",
+    "emptyTitle": "No recipes yet",
+    "emptyDescription": "Save your favorite recipes and reuse them in meal planning.",
+    "titleLabel": "Title *",
+    "titlePlaceholder": "e.g. Pasta Carbonara",
+    "notesLabel": "Notes",
+    "notesPlaceholder": "Optional...",
+    "urlLabel": "Recipe link",
     "urlPlaceholder": "https://...",
-    "ingredientsLabel": "Ingredienti",
-    "addToMeals": "Aggiungi al piano alimentare",
-    "openLink": "Apri il link della ricetta",
-    "deleteConfirm": "Eliminare la ricetta \"{{title}}\"?",
-    "created": "Ricetta salvata.",
-    "updated": "Ricetta aggiornata.",
-    "deleted": "Ricetta eliminata.",
-    "titleRequired": "È richiesto il titolo",
-    "duplicate": "Duplicato",
-    "duplicated": "Ricetta duplicata.",
-    "copySuffix": "copia"
+    "ingredientsLabel": "Ingredients",
+    "addToMeals": "Add to meal plan",
+    "openLink": "Open recipe link",
+    "deleteConfirm": "Delete recipe \"{{title}}\"?",
+    "created": "Recipe saved.",
+    "updated": "Recipe updated.",
+    "deleted": "Recipe deleted.",
+    "titleRequired": "Title is required",
+    "duplicate": "Duplicate",
+    "duplicated": "Recipe duplicated.",
+    "copySuffix": "copy"
   },
   "search": {
     "title": "Ricerca",

public/locales/ja.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "譲渡・贈与",
     "catGovernmentBenefits": "社会保障給付",
     "catOtherIncome": "その他の収入",
-    "loadingIndicator": "読み込み中…"
+    "loadingIndicator": "読み込み中…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "設定",

public/locales/pt.json

@@ -467,7 +467,7 @@
     "catRent": "Aluguel",
     "catInsurance": "Seguro",
     "catMobility": "Transporte",
-    "catLeisure": "Lazer",
+    "catLeisure": "Lazer e Entretenimento",
     "catClothing": "Roupas",
     "catHealth": "Saúde",
     "catEducation": "Educação",
@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Transferências e Presentes",
     "catGovernmentBenefits": "Benefícios Sociais",
     "catOtherIncome": "Outras Rendas",
-    "loadingIndicator": "Carregando…"
+    "loadingIndicator": "Carregando…",
+    "subcategoryLabel": "Subcategoria",
+    "catHousing": "Habitação / Casa",
+    "catTransport": "Transporte",
+    "catPersonalHealth": "Cuidados Pessoais / Saúde",
+    "catShoppingClothing": "Compras e Vestuário",
+    "catFinancialOther": "Serviços Financeiros e Outros",
+    "subcatRentMortgage": "Aluguel / Prestação",
+    "subcatCondominium": "Condomínio",
+    "subcatUtilities": "Luz / Água / Gás",
+    "subcatInternetTvPhone": "Internet / TV / Telefone",
+    "subcatRenovationMaintenance": "Reforma / Manutenção",
+    "subcatCleaning": "Limpeza",
+    "subcatGroceries": "Supermercado",
+    "subcatRestaurantsBars": "Restaurante / Bares",
+    "subcatSnacksFastFood": "Lanches / Fast Food",
+    "subcatBakery": "Padaria",
+    "subcatFuel": "Combustível",
+    "subcatParkingTolls": "Estacionamento / Pedágio",
+    "subcatPublicTransport": "Transporte Público",
+    "subcatAppsTaxi": "Aplicativos / Táxi",
+    "subcatMaintenanceInsurance": "Manutenção / Seguro",
+    "subcatPharmacy": "Farmácia",
+    "subcatHealthInsurance": "Plano de Saúde",
+    "subcatGymSports": "Academia / Esportes",
+    "subcatBeautyCosmetics": "Beleza / Cosméticos",
+    "subcatTravel": "Viagens",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Eventos",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Roupas / Calçados",
+    "subcatElectronics": "Eletrônicos",
+    "subcatGifts": "Presentes",
+    "subcatCoursesCollege": "Cursos / Faculdade",
+    "subcatSchoolSupplies": "Material Escolar",
+    "subcatLanguages": "Idiomas",
+    "subcatLoansInterest": "Empréstimos / Juros",
+    "subcatBankFees": "Tarifas Bancárias",
+    "subcatInsuranceOther": "Seguros",
+    "subcatInvestments": "Investimentos",
+    "subcatTaxes": "Impostos",
+    "metaLoadError": "Categorias do orçamento não puderam ser carregadas.",
+    "addCategory": "+ categoria",
+    "addSubcategory": "+ subcategoria",
+    "newCategoryPrompt": "Nome da nova categoria:",
+    "newSubcategoryPrompt": "Nome da nova subcategoria:",
+    "categoryAddedToast": "Categoria adicionada.",
+    "subcategoryAddedToast": "Subcategoria adicionada."
   },
   "settings": {
     "title": "Configurações",

public/locales/ru.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Переводы и подарки",
     "catGovernmentBenefits": "Социальные пособия",
     "catOtherIncome": "Прочие доходы",
-    "loadingIndicator": "Загрузка…"
+    "loadingIndicator": "Загрузка…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "Настройки",

public/locales/sv.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Överföringar och gåvor",
     "catGovernmentBenefits": "Socialförmåner",
     "catOtherIncome": "Övrig inkomst",
-    "loadingIndicator": "Laddar…"
+    "loadingIndicator": "Laddar…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "Inställningar",

public/locales/tr.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Transferler ve Hediyeler",
     "catGovernmentBenefits": "Sosyal Yardımlar",
     "catOtherIncome": "Diğer Gelir",
-    "loadingIndicator": "Yükleniyor…"
+    "loadingIndicator": "Yükleniyor…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "Ayarlar",

public/locales/uk.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "Переводи та подарунки",
     "catGovernmentBenefits": "Соціальні виплати",
     "catOtherIncome": "Інші доходи",
-    "loadingIndicator": "Завантаження…"
+    "loadingIndicator": "Завантаження…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "Налаштування",

public/locales/zh.json

@@ -477,7 +477,54 @@
     "catTransferGiftIncome": "转账和礼物",
     "catGovernmentBenefits": "社会福利",
     "catOtherIncome": "其他收入",
-    "loadingIndicator": "加载中…"
+    "loadingIndicator": "加载中…",
+    "subcategoryLabel": "Subcategory",
+    "catHousing": "Housing / Home",
+    "catTransport": "Transport",
+    "catPersonalHealth": "Personal Care / Health",
+    "catShoppingClothing": "Shopping and Clothing",
+    "catFinancialOther": "Financial Services and Other",
+    "subcatRentMortgage": "Rent / Mortgage",
+    "subcatCondominium": "Condominium fees",
+    "subcatUtilities": "Electricity / Water / Gas",
+    "subcatInternetTvPhone": "Internet / TV / Phone",
+    "subcatRenovationMaintenance": "Renovation / Maintenance",
+    "subcatCleaning": "Cleaning",
+    "subcatGroceries": "Groceries",
+    "subcatRestaurantsBars": "Restaurants / Bars",
+    "subcatSnacksFastFood": "Snacks / Fast Food",
+    "subcatBakery": "Bakery",
+    "subcatFuel": "Fuel",
+    "subcatParkingTolls": "Parking / Tolls",
+    "subcatPublicTransport": "Public transport",
+    "subcatAppsTaxi": "Apps / Taxi",
+    "subcatMaintenanceInsurance": "Maintenance / Insurance",
+    "subcatPharmacy": "Pharmacy",
+    "subcatHealthInsurance": "Health insurance",
+    "subcatGymSports": "Gym / Sports",
+    "subcatBeautyCosmetics": "Beauty / Cosmetics",
+    "subcatTravel": "Travel",
+    "subcatStreaming": "Streaming",
+    "subcatEvents": "Events",
+    "subcatHobbies": "Hobbies",
+    "subcatClothesShoes": "Clothes / Shoes",
+    "subcatElectronics": "Electronics",
+    "subcatGifts": "Gifts",
+    "subcatCoursesCollege": "Courses / College",
+    "subcatSchoolSupplies": "School supplies",
+    "subcatLanguages": "Languages",
+    "subcatLoansInterest": "Loans / Interest",
+    "subcatBankFees": "Bank fees",
+    "subcatInsuranceOther": "Insurance",
+    "subcatInvestments": "Investments",
+    "subcatTaxes": "Taxes",
+    "metaLoadError": "Budget categories could not be loaded.",
+    "addCategory": "+ category",
+    "addSubcategory": "+ subcategory",
+    "newCategoryPrompt": "Name of the new category:",
+    "newSubcategoryPrompt": "Name of the new subcategory:",
+    "categoryAddedToast": "Category added.",
+    "subcategoryAddedToast": "Subcategory added."
   },
   "settings": {
     "title": "设置",

public/pages/budget.js

@@ -15,29 +15,16 @@ import { esc } from '/utils/html.js';
 // Konstanten
 // --------------------------------------------------------
 
-const EXPENSE_CATEGORIES = [
-  'Lebensmittel', 'Miete', 'Versicherung', 'Mobilität',
-  'Freizeit', 'Kleidung', 'Gesundheit', 'Bildung', 'Sonstiges',
-];
-
-const INCOME_CATEGORIES = [
-  'Erwerbseinkommen', 'Kapitalerträge', 'Geschenke & Transfers',
-  'Sozialleistungen', 'Sonstiges Einkommen',
-];
-
-const CATEGORIES = [...EXPENSE_CATEGORIES, ...INCOME_CATEGORIES];
-
-const CATEGORY_LABELS = () => ({
+const CATEGORY_I18N = () => ({
   // Expense categories
-  'Lebensmittel': t('budget.catFood'),
-  'Miete':        t('budget.catRent'),
-  'Versicherung': t('budget.catInsurance'),
-  'Mobilität':    t('budget.catMobility'),
-  'Freizeit':     t('budget.catLeisure'),
-  'Kleidung':     t('budget.catClothing'),
-  'Gesundheit':   t('budget.catHealth'),
-  'Bildung':      t('budget.catEducation'),
-  'Sonstiges':    t('budget.catMisc'),
+  housing:            t('budget.catHousing'),
+  food:               t('budget.catFood'),
+  transport:          t('budget.catTransport'),
+  personal_health:    t('budget.catPersonalHealth'),
+  leisure:            t('budget.catLeisure'),
+  shopping_clothing:  t('budget.catShoppingClothing'),
+  education:          t('budget.catEducation'),
+  financial_other:    t('budget.catFinancialOther'),
   // Income categories
   'Erwerbseinkommen':      t('budget.catEarnedIncome'),
   'Kapitalerträge':        t('budget.catInvestmentIncome'),
@@ -46,6 +33,82 @@ const CATEGORY_LABELS = () => ({
   'Sonstiges Einkommen':   t('budget.catOtherIncome'),
 });
 
+const SUBCATEGORY_I18N = () => ({
+  rent_mortgage:            t('budget.subcatRentMortgage'),
+  condominium:              t('budget.subcatCondominium'),
+  utilities:                t('budget.subcatUtilities'),
+  internet_tv_phone:        t('budget.subcatInternetTvPhone'),
+  renovation_maintenance:   t('budget.subcatRenovationMaintenance'),
+  cleaning:                 t('budget.subcatCleaning'),
+  groceries:                t('budget.subcatGroceries'),
+  restaurants_bars:         t('budget.subcatRestaurantsBars'),
+  snacks_fast_food:         t('budget.subcatSnacksFastFood'),
+  bakery:                   t('budget.subcatBakery'),
+  fuel:                     t('budget.subcatFuel'),
+  parking_tolls:            t('budget.subcatParkingTolls'),
+  public_transport:         t('budget.subcatPublicTransport'),
+  apps_taxi:                t('budget.subcatAppsTaxi'),
+  maintenance_insurance:    t('budget.subcatMaintenanceInsurance'),
+  pharmacy:                 t('budget.subcatPharmacy'),
+  health_insurance:         t('budget.subcatHealthInsurance'),
+  gym_sports:               t('budget.subcatGymSports'),
+  beauty_cosmetics:         t('budget.subcatBeautyCosmetics'),
+  travel:                   t('budget.subcatTravel'),
+  streaming:                t('budget.subcatStreaming'),
+  events:                   t('budget.subcatEvents'),
+  hobbies:                  t('budget.subcatHobbies'),
+  clothes_shoes:            t('budget.subcatClothesShoes'),
+  electronics:              t('budget.subcatElectronics'),
+  gifts:                    t('budget.subcatGifts'),
+  courses_college:          t('budget.subcatCoursesCollege'),
+  school_supplies:          t('budget.subcatSchoolSupplies'),
+  languages:                t('budget.subcatLanguages'),
+  loans_interest:           t('budget.subcatLoansInterest'),
+  bank_fees:                t('budget.subcatBankFees'),
+  insurance_other:          t('budget.subcatInsuranceOther'),
+  investments:              t('budget.subcatInvestments'),
+  taxes:                    t('budget.subcatTaxes'),
+});
+
+function categoryLabel(category) {
+  const item = typeof category === 'object'
+    ? category
+    : [...expenseCategories(), ...incomeCategories()].find((c) => c.key === category);
+  const key = item?.key ?? category;
+  const name = item?.name ?? category;
+  return CATEGORY_I18N()[key] ?? name;
+}
+
+function subcategoryLabel(subcategory) {
+  const item = typeof subcategory === 'object'
+    ? subcategory
+    : Object.values(state.meta.expenseSubcategories ?? {}).flat().find((s) => s.key === subcategory);
+  const key = item?.key ?? subcategory;
+  const name = item?.name ?? subcategory;
+  return SUBCATEGORY_I18N()[key] ?? name;
+}
+
+function expenseCategories() {
+  return state.meta.expenseCategories ?? [];
+}
+
+function incomeCategories() {
+  return state.meta.incomeCategories ?? [];
+}
+
+function getSubcategories(category) {
+  return state.meta.expenseSubcategories?.[category] || [];
+}
+
+function defaultSubcategory(category) {
+  return getSubcategories(category)[0]?.key || '';
+}
+
+function defaultCategory(type) {
+  const cats = type === 'income' ? incomeCategories() : expenseCategories();
+  return cats[0]?.key || '';
+}
+
 function getMonthName(monthIndex) {
   // monthIndex: 0-based (0=Januar, 11=Dezember)
   const date = new Date(2000, monthIndex, 1);
@@ -62,6 +125,7 @@ let state = {
   summary:     null,
   prevSummary: null, // Vormonat für Monatsvergleich
   currency:    'EUR',
+  meta:        { expenseCategories: [], incomeCategories: [], expenseSubcategories: {} },
 };
 let _container = null;
 
@@ -110,6 +174,21 @@ async function loadMonth(month) {
   }
 }
 
+async function loadBudgetMeta() {
+  try {
+    const res = await api.get('/budget/meta');
+    state.meta = {
+      expenseCategories: res.data?.expenseCategories ?? [],
+      incomeCategories: res.data?.incomeCategories ?? [],
+      expenseSubcategories: res.data?.expenseSubcategories ?? {},
+    };
+  } catch (err) {
+    console.error('[Budget] meta Fehler:', err);
+    state.meta = { expenseCategories: [], incomeCategories: [], expenseSubcategories: {} };
+    window.oikos?.showToast(t('budget.metaLoadError'), 'danger');
+  }
+}
+
 // --------------------------------------------------------
 // Entry Point
 // --------------------------------------------------------
@@ -120,7 +199,10 @@ export async function render(container, { user }) {
   state.month = `${today.getFullYear()}-${String(today.getMonth() + 1).padStart(2, '0')}`;
 
   try {
-    const prefsRes = await api.get('/preferences');
+    const [prefsRes] = await Promise.all([
+      api.get('/preferences'),
+      loadBudgetMeta(),
+    ]);
     state.currency = prefsRes.data?.currency ?? 'EUR';
   } catch (_) { /* Fallback auf EUR */ }
 
@@ -274,7 +356,7 @@ function renderCategoryBars(byCategory) {
 
     return `
       <div class="budget-bar-row">
-        <div class="budget-bar-row__label" title="${esc(CATEGORY_LABELS()[c.category] ?? c.category)}">${esc(CATEGORY_LABELS()[c.category] ?? c.category)}</div>
+        <div class="budget-bar-row__label" title="${esc(categoryLabel(c.category))}">${esc(categoryLabel(c.category))}</div>
         <div class="budget-bar-row__track">
           <div class="budget-bar-row__fill ${cls}" style="width:${pct}%;"></div>
         </div>
@@ -305,13 +387,16 @@ function renderEntries() {
     const sign      = isIncome ? '+' : '';
     const date      = formatEntryDate(e.date);
     const recurTag  = e.is_recurring ? ' 🔁' : (e.recurrence_parent_id ? ' ↩' : '');
+    const categoryMeta = isIncome || !e.subcategory
+      ? categoryLabel(e.category)
+      : `${categoryLabel(e.category)} · ${subcategoryLabel(e.subcategory)}`;
 
     return `
       <div class="budget-entry" data-id="${e.id}">
         <div class="budget-entry__indicator ${indClass}"></div>
         <div class="budget-entry__body">
           <div class="budget-entry__title">${esc(e.title)}</div>
-          <div class="budget-entry__meta">${date} · ${esc(CATEGORY_LABELS()[e.category] ?? e.category)}${recurTag}</div>
+          <div class="budget-entry__meta">${date} · ${esc(categoryMeta)}${recurTag}</div>
         </div>
         <div class="budget-entry__amount ${amtClass}">${sign}${formatAmount(e.amount)}</div>
         <button class="budget-entry__delete" data-action="delete" data-id="${e.id}" aria-label="${t('budget.deleteLabel')}">
@@ -359,10 +444,14 @@ function openBudgetModal({ mode, entry = null }) {
   const isExpense  = isEdit ? entry.amount < 0 : true;
   const absAmount  = isEdit ? Math.abs(entry.amount).toFixed(2) : '';
 
-  const catLabels   = CATEGORY_LABELS();
-  const initialCats = isExpense ? EXPENSE_CATEGORIES : INCOME_CATEGORIES;
+  const initialCats = isExpense ? expenseCategories() : incomeCategories();
   const catOpts     = initialCats.map((c) =>
-    `<option value="${c}" ${isEdit && entry.category === c ? 'selected' : ''}>${catLabels[c] || c}</option>`
+    `<option value="${esc(c.key)}" ${isEdit && entry.category === c.key ? 'selected' : ''}>${esc(categoryLabel(c))}</option>`
+  ).join('');
+  const initialCategory = isEdit ? entry.category : initialCats[0]?.key;
+  const initialSubcategory = isEdit ? entry.subcategory : defaultSubcategory(initialCategory);
+  const subcatOpts = getSubcategories(initialCategory).map((s) =>
+    `<option value="${esc(s.key)}" ${initialSubcategory === s.key ? 'selected' : ''}>${esc(subcategoryLabel(s))}</option>`
   ).join('');
 
   const content = `
@@ -387,10 +476,21 @@ function openBudgetModal({ mode, entry = null }) {
     </div>
 
     <div class="form-group">
+      <div class="budget-field-header">
         <label class="form-label" for="bm-category">${t('budget.categoryLabel')}</label>
+        <button class="btn btn--secondary budget-inline-add" type="button" id="bm-add-category">${t('budget.addCategory')}</button>
+      </div>
       <select class="form-input" id="bm-category">${catOpts}</select>
     </div>
 
+    <div class="form-group" id="bm-subcategory-group" ${isExpense ? '' : 'hidden'}>
+      <div class="budget-field-header">
+        <label class="form-label" for="bm-subcategory">${t('budget.subcategoryLabel')}</label>
+        <button class="btn btn--secondary budget-inline-add" type="button" id="bm-add-subcategory">${t('budget.addSubcategory')}</button>
+      </div>
+      <select class="form-input" id="bm-subcategory">${subcatOpts}</select>
+    </div>
+
     <div class="form-group">
       <label class="form-label" for="bm-date">${t('budget.dateLabel')}</label>
       <input type="date" class="form-input" id="bm-date"
@@ -422,20 +522,70 @@ function openBudgetModal({ mode, entry = null }) {
     onSave(panel) {
       let currentType = isExpense ? 'expense' : 'income';
 
-      const updateCategoryOptions = () => {
-        const catLabels = CATEGORY_LABELS();
-        const cats = currentType === 'income' ? INCOME_CATEGORIES : EXPENSE_CATEGORIES;
+      const updateCategoryOptions = (preferredCategory = '') => {
+        const cats = currentType === 'income' ? incomeCategories() : expenseCategories();
         const catSelect = panel.querySelector('#bm-category');
-        const currentValue = catSelect.value;
+        const currentValue = preferredCategory || catSelect.value;
 
         const options = cats.map((c) => {
           const opt = document.createElement('option');
-          opt.value = c;
-          opt.textContent = catLabels[c] || c;
-          opt.selected = currentValue === c;
+          opt.value = c.key;
+          opt.textContent = categoryLabel(c);
+          opt.selected = currentValue === c.key;
           return opt;
         });
         catSelect.replaceChildren(...options);
+        if (!cats.some((c) => c.key === catSelect.value)) catSelect.value = cats[0]?.key || '';
+        updateSubcategoryOptions();
+      };
+
+      const updateSubcategoryOptions = (preferredSubcategory = '') => {
+        const catSelect = panel.querySelector('#bm-category');
+        const subcatGroup = panel.querySelector('#bm-subcategory-group');
+        const subcatSelect = panel.querySelector('#bm-subcategory');
+        const subcategories = currentType === 'expense' ? getSubcategories(catSelect.value) : [];
+        const currentValue = preferredSubcategory || subcatSelect.value;
+
+        subcatGroup.hidden = currentType !== 'expense';
+        subcatSelect.replaceChildren(...subcategories.map((s) => {
+          const opt = document.createElement('option');
+          opt.value = s.key;
+          opt.textContent = subcategoryLabel(s);
+          opt.selected = currentValue === s.key;
+          return opt;
+        }));
+        if (subcategories.length && !subcategories.some((s) => s.key === subcatSelect.value)) {
+          subcatSelect.value = subcategories[0].key;
+        }
+      };
+
+      const addCategory = async () => {
+        const name = window.prompt(t('budget.newCategoryPrompt'));
+        if (!name?.trim()) return;
+        try {
+          const res = await api.post('/budget/categories', { name: name.trim(), type: currentType });
+          await loadBudgetMeta();
+          updateCategoryOptions(res.data.key);
+          window.oikos?.showToast(t('budget.categoryAddedToast'), 'success');
+        } catch (err) {
+          window.oikos?.showToast(err.data?.error ?? t('common.unknownError'), 'error');
+        }
+      };
+
+      const addSubcategory = async () => {
+        if (currentType !== 'expense') return;
+        const category = panel.querySelector('#bm-category').value;
+        if (!category) return;
+        const name = window.prompt(t('budget.newSubcategoryPrompt'));
+        if (!name?.trim()) return;
+        try {
+          const res = await api.post(`/budget/categories/${encodeURIComponent(category)}/subcategories`, { name: name.trim() });
+          await loadBudgetMeta();
+          updateSubcategoryOptions(res.data.key);
+          window.oikos?.showToast(t('budget.subcategoryAddedToast'), 'success');
+        } catch (err) {
+          window.oikos?.showToast(err.data?.error ?? t('common.unknownError'), 'error');
+        }
       };
 
       panel.querySelector('#type-expense').addEventListener('click', () => {
@@ -450,6 +600,9 @@ function openBudgetModal({ mode, entry = null }) {
         panel.querySelector('#type-expense').classList.remove('amount-type-btn--active');
         updateCategoryOptions();
       });
+      panel.querySelector('#bm-category').addEventListener('change', () => updateSubcategoryOptions());
+      panel.querySelector('#bm-add-category').addEventListener('click', addCategory);
+      panel.querySelector('#bm-add-subcategory').addEventListener('click', addSubcategory);
 
       panel.querySelector('#bm-cancel').addEventListener('click', closeModal);
 
@@ -463,6 +616,7 @@ function openBudgetModal({ mode, entry = null }) {
         const title      = panel.querySelector('#bm-title').value.trim();
         const absVal     = parseFloat(panel.querySelector('#bm-amount').value);
         const category   = panel.querySelector('#bm-category').value;
+        const subcategory = currentType === 'expense' ? panel.querySelector('#bm-subcategory').value : '';
         const date       = panel.querySelector('#bm-date').value;
         const recurring  = panel.querySelector('#bm-recurring').checked ? 1 : 0;
 
@@ -476,7 +630,7 @@ function openBudgetModal({ mode, entry = null }) {
         saveBtn.textContent = '…';
 
         try {
-          const body = { title, amount, category, date, is_recurring: recurring };
+          const body = { title, amount, category, subcategory, date, is_recurring: recurring };
           if (mode === 'create') {
             const res = await api.post('/budget', body);
             state.entries.unshift(res.data);
@@ -523,4 +677,3 @@ async function deleteEntry(id) {
 // --------------------------------------------------------
 // Hilfsfunktion
 // --------------------------------------------------------
-

public/styles/budget.css

@@ -331,3 +331,20 @@
   color: var(--color-text-on-accent);
 }
 
+.budget-field-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--space-2);
+  margin-bottom: var(--space-1);
+}
+
+.budget-field-header .form-label {
+  margin-bottom: 0;
+}
+
+.budget-inline-add {
+  min-height: auto;
+  padding: 2px var(--space-2);
+  font-size: var(--text-xs);
+}

public/sw.js

@@ -13,9 +13,9 @@
  *   → bypassCacheUntil (in-memory + Cache API für SW-Restart-Robustheit)
  */
 
-const SHELL_CACHE   = 'oikos-shell-v50';
-const PAGES_CACHE   = 'oikos-pages-v45';
-const ASSETS_CACHE  = 'oikos-assets-v45';
+const SHELL_CACHE   = 'oikos-shell-v52';
+const PAGES_CACHE   = 'oikos-pages-v47';
+const ASSETS_CACHE  = 'oikos-assets-v47';
 const BYPASS_CACHE  = 'oikos-bypass-flag';
 const ALL_CACHES    = [SHELL_CACHE, PAGES_CACHE, ASSETS_CACHE];
 

server/auth.js

@@ -136,7 +136,7 @@ function requireAuth(req, res, next) {
   if (req.session && req.session.userId) {
     return next();
   }
-  res.status(401).json({ error: 'Nicht authentifiziert.', code: 401 });
+  res.status(401).json({ error: 'Not authenticated.', code: 401 });
 }
 
 /**
@@ -146,7 +146,7 @@ function requireAdmin(req, res, next) {
   if (req.session && req.session.role === 'admin') {
     return next();
   }
-  res.status(403).json({ error: 'Keine Berechtigung.', code: 403 });
+  res.status(403).json({ error: 'Permission denied.', code: 403 });
 }
 
 // --------------------------------------------------------
@@ -165,11 +165,11 @@ router.post('/login', loginLimiter, async (req, res) => {
     const { username, password } = req.body;
 
     if (!username || !password) {
-      return res.status(400).json({ error: 'Benutzername und Passwort erforderlich.', code: 400 });
+      return res.status(400).json({ error: 'Username and password are required.', code: 400 });
     }
 
     if (username.length > 64 || password.length > 1024) {
-      return res.status(400).json({ error: 'Eingabe zu lang.', code: 400 });
+      return res.status(400).json({ error: 'Input is too long.', code: 400 });
     }
 
     const user = db.get().prepare('SELECT * FROM users WHERE username = ?').get(username);
@@ -177,18 +177,18 @@ router.post('/login', loginLimiter, async (req, res) => {
     if (!user) {
       // Timing-Attack-Schutz: trotzdem bcrypt ausführen
       await bcrypt.compare(password, '$2b$12$invalidhashfortimingprotection000000000000000000000');
-      return res.status(401).json({ error: 'Ungültige Anmeldedaten.', code: 401 });
+      return res.status(401).json({ error: 'Invalid credentials.', code: 401 });
     }
 
     const valid = await bcrypt.compare(password, user.password_hash);
     if (!valid) {
-      return res.status(401).json({ error: 'Ungültige Anmeldedaten.', code: 401 });
+      return res.status(401).json({ error: 'Invalid credentials.', code: 401 });
     }
 
     req.session.regenerate((err) => {
       if (err) {
-        log.error('Session-Regenerierung fehlgeschlagen:', err);
-        return res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+        log.error('Session regeneration failed:', err);
+        return res.status(500).json({ error: 'Internal server error.', code: 500 });
       }
 
       req.session.userId    = user.id;
@@ -215,8 +215,8 @@ router.post('/login', loginLimiter, async (req, res) => {
       });
     });
   } catch (err) {
-    log.error('Login-Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('Login error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -227,8 +227,8 @@ router.post('/login', loginLimiter, async (req, res) => {
 router.post('/logout', requireAuth, csrfMiddleware, (req, res) => {
   req.session.destroy((err) => {
     if (err) {
-      log.error('Logout-Fehler:', err);
-      return res.status(500).json({ error: 'Logout fehlgeschlagen.', code: 500 });
+      log.error('Logout error:', err);
+      return res.status(500).json({ error: 'Logout failed.', code: 500 });
     }
     res.clearCookie('oikos.sid');
     res.json({ ok: true });
@@ -246,7 +246,7 @@ router.post('/setup', loginLimiter, async (req, res) => {
   try {
     const { count } = db.get().prepare('SELECT COUNT(*) as count FROM users').get();
     if (count > 0) {
-      return res.status(403).json({ error: 'Setup bereits abgeschlossen.', code: 403 });
+      return res.status(403).json({ error: 'Setup has already been completed.', code: 403 });
     }
 
     const username = (req.body.username || '').trim();
@@ -254,16 +254,16 @@ router.post('/setup', loginLimiter, async (req, res) => {
     const { password } = req.body;
 
     if (!username || !display_name || !password) {
-      return res.status(400).json({ error: 'Benutzername, Anzeigename und Passwort erforderlich.', code: 400 });
+      return res.status(400).json({ error: 'Username, display name, and password are required.', code: 400 });
     }
     if (!/^[a-zA-Z0-9._-]{3,64}$/.test(username)) {
-      return res.status(400).json({ error: 'Benutzername muss 3-64 Zeichen lang sein und darf nur Buchstaben, Zahlen, Punkte, Bindestriche und Unterstriche enthalten.', code: 400 });
+      return res.status(400).json({ error: 'Username must be 3-64 characters long and may only contain letters, numbers, dots, hyphens, and underscores.', code: 400 });
     }
     if (display_name.length > 128) {
-      return res.status(400).json({ error: 'Anzeigename darf maximal 128 Zeichen lang sein.', code: 400 });
+      return res.status(400).json({ error: 'Display name may be at most 128 characters long.', code: 400 });
     }
     if (password.length < 8) {
-      return res.status(400).json({ error: 'Passwort muss mindestens 8 Zeichen haben.', code: 400 });
+      return res.status(400).json({ error: 'Password must be at least 8 characters long.', code: 400 });
     }
 
     const avatarColor = avatarColors[Math.floor(Math.random() * avatarColors.length)];
@@ -278,10 +278,10 @@ router.post('/setup', loginLimiter, async (req, res) => {
     });
   } catch (err) {
     if (err.message?.includes('UNIQUE constraint')) {
-      return res.status(409).json({ error: 'Benutzername bereits vergeben.', code: 409 });
+      return res.status(409).json({ error: 'Username is already taken.', code: 409 });
     }
     log.error('Setup error:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -297,7 +297,7 @@ router.get('/me', requireAuth, (req, res) => {
 
     if (!user) {
       req.session.destroy(() => {});
-      return res.status(401).json({ error: 'Benutzer nicht gefunden.', code: 401 });
+      return res.status(401).json({ error: 'User not found.', code: 401 });
     }
 
     // CSRF-Token erneuern falls vorhanden (wichtig fuer iOS-PWA-Resume:
@@ -315,8 +315,8 @@ router.get('/me', requireAuth, (req, res) => {
 
     res.json({ user, csrfToken: req.session.csrfToken });
   } catch (err) {
-    log.error('/me Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('/me error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -332,8 +332,8 @@ router.get('/users', requireAuth, requireAdmin, (req, res) => {
       .all();
     res.json({ data: users });
   } catch (err) {
-    log.error('Users-Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('Users error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -348,23 +348,23 @@ router.post('/users', requireAuth, requireAdmin, csrfMiddleware, async (req, res
     const { username, display_name, password, avatar_color = '#007AFF', role = 'member' } = req.body;
 
     if (!username || !display_name || !password) {
-      return res.status(400).json({ error: 'Benutzername, Anzeigename und Passwort erforderlich.', code: 400 });
+      return res.status(400).json({ error: 'Username, display name, and password are required.', code: 400 });
     }
 
     if (password.length < 8) {
-      return res.status(400).json({ error: 'Passwort muss mindestens 8 Zeichen haben.', code: 400 });
+      return res.status(400).json({ error: 'Password must be at least 8 characters long.', code: 400 });
     }
 
     if (!/^[a-zA-Z0-9._-]{3,64}$/.test(username)) {
-      return res.status(400).json({ error: 'Benutzername muss 3-64 Zeichen lang sein und darf nur Buchstaben, Zahlen, Punkte, Bindestriche und Unterstriche enthalten.', code: 400 });
+      return res.status(400).json({ error: 'Username must be 3-64 characters long and may only contain letters, numbers, dots, hyphens, and underscores.', code: 400 });
     }
 
     if (display_name.length > 128) {
-      return res.status(400).json({ error: 'Anzeigename darf maximal 128 Zeichen lang sein.', code: 400 });
+      return res.status(400).json({ error: 'Display name may be at most 128 characters long.', code: 400 });
     }
 
     if (!['admin', 'member'].includes(role)) {
-      return res.status(400).json({ error: 'Ungültige Rolle.', code: 400 });
+      return res.status(400).json({ error: 'Invalid role.', code: 400 });
     }
 
     const hash = await bcrypt.hash(password, 12);
@@ -381,10 +381,10 @@ router.post('/users', requireAuth, requireAdmin, csrfMiddleware, async (req, res
     });
   } catch (err) {
     if (err.message && err.message.includes('UNIQUE constraint')) {
-      return res.status(409).json({ error: 'Benutzername bereits vergeben.', code: 409 });
+      return res.status(409).json({ error: 'Username is already taken.', code: 409 });
     }
-    log.error('User-Erstellen-Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('User creation error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -399,17 +399,17 @@ router.patch('/me/password', requireAuth, csrfMiddleware, async (req, res) => {
     const { current_password, new_password } = req.body;
 
     if (!current_password || !new_password) {
-      return res.status(400).json({ error: 'Aktuelles und neues Passwort erforderlich.', code: 400 });
+      return res.status(400).json({ error: 'Current and new password are required.', code: 400 });
     }
     if (new_password.length < 8) {
-      return res.status(400).json({ error: 'Neues Passwort muss mindestens 8 Zeichen haben.', code: 400 });
+      return res.status(400).json({ error: 'New password must be at least 8 characters long.', code: 400 });
     }
 
     const user = db.get().prepare('SELECT password_hash FROM users WHERE id = ?').get(req.session.userId);
-    if (!user) return res.status(404).json({ error: 'Benutzer nicht gefunden.', code: 404 });
+    if (!user) return res.status(404).json({ error: 'User not found.', code: 404 });
 
     const valid = await bcrypt.compare(current_password, user.password_hash);
-    if (!valid) return res.status(401).json({ error: 'Aktuelles Passwort falsch.', code: 401 });
+    if (!valid) return res.status(401).json({ error: 'Current password is incorrect.', code: 401 });
 
     const hash = await bcrypt.hash(new_password, 12);
     db.get().prepare('UPDATE users SET password_hash = ? WHERE id = ?').run(hash, req.session.userId);
@@ -429,8 +429,8 @@ router.patch('/me/password', requireAuth, csrfMiddleware, async (req, res) => {
 
     res.json({ ok: true });
   } catch (err) {
-    log.error('Passwort-Aendern-Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('Password change error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -444,13 +444,13 @@ router.delete('/users/:id', requireAuth, requireAdmin, csrfMiddleware, (req, res
     const userId = parseInt(req.params.id, 10);
 
     if (userId === req.session.userId) {
-      return res.status(400).json({ error: 'Eigenes Konto kann nicht gelöscht werden.', code: 400 });
+      return res.status(400).json({ error: 'You cannot delete your own account.', code: 400 });
     }
 
     const result = db.get().prepare('DELETE FROM users WHERE id = ?').run(userId);
 
     if (result.changes === 0) {
-      return res.status(404).json({ error: 'Benutzer nicht gefunden.', code: 404 });
+      return res.status(404).json({ error: 'User not found.', code: 404 });
     }
 
     // Alle aktiven Sessions des geloeschten Users invalidieren
@@ -466,8 +466,8 @@ router.delete('/users/:id', requireAuth, requireAdmin, csrfMiddleware, (req, res
 
     res.json({ ok: true });
   } catch (err) {
-    log.error('User-Loeschen-Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('User deletion error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 

server/db-schema-test.js

@@ -121,6 +121,7 @@ const MIGRATIONS_SQL = {
       title           TEXT    NOT NULL,
       amount          REAL    NOT NULL,
       category        TEXT    NOT NULL DEFAULT 'Sonstiges',
+      subcategory     TEXT    NOT NULL DEFAULT '',
       date            TEXT    NOT NULL,
       is_recurring    INTEGER NOT NULL DEFAULT 0,
       recurrence_rule TEXT,
@@ -128,6 +129,21 @@ const MIGRATIONS_SQL = {
       created_at      TEXT    NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
       updated_at      TEXT    NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%SZ', 'now'))
     );
+    CREATE TABLE IF NOT EXISTS budget_categories (
+      key        TEXT PRIMARY KEY,
+      name       TEXT    NOT NULL,
+      type       TEXT    NOT NULL CHECK(type IN ('expense', 'income')),
+      sort_order INTEGER NOT NULL DEFAULT 0,
+      created_at TEXT    NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%SZ', 'now'))
+    );
+    CREATE TABLE IF NOT EXISTS budget_subcategories (
+      key          TEXT PRIMARY KEY,
+      category_key TEXT    NOT NULL REFERENCES budget_categories(key) ON DELETE CASCADE,
+      name         TEXT    NOT NULL,
+      sort_order   INTEGER NOT NULL DEFAULT 0,
+      created_at   TEXT    NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
+      UNIQUE(category_key, name)
+    );
     CREATE TRIGGER IF NOT EXISTS trg_users_updated_at
       AFTER UPDATE ON users FOR EACH ROW
       BEGIN UPDATE users SET updated_at = strftime('%Y-%m-%dT%H:%M:%SZ', 'now') WHERE id = OLD.id; END;

server/db.js

@@ -41,7 +41,7 @@ function init() {
     try {
       db.prepare('SELECT count(*) FROM sqlite_master').get();
     } catch {
-      throw new Error('[DB] Falscher Verschlüsselungsschlüssel oder keine SQLCipher-Unterstützung.');
+      throw new Error('[DB] Wrong encryption key or SQLCipher support is unavailable.');
     }
   }
 
@@ -52,7 +52,7 @@ function init() {
 
   migrate();
 
-  log.info(`Verbunden: ${DB_PATH} | Schema v${currentVersion()}`);
+  log.info(`Connected: ${DB_PATH} | Schema v${currentVersion()}`);
   return db;
 }
 
@@ -67,7 +67,7 @@ function init() {
 const MIGRATIONS = [
   {
     version: 1,
-    description: 'Initiales Schema',
+    description: 'Initial schema',
     up: `
       -- Benutzer
       CREATE TABLE IF NOT EXISTS users (
@@ -269,7 +269,7 @@ const MIGRATIONS = [
   },
   {
     version: 2,
-    description: 'Sync-Konfigurationstabelle für Google/Apple Calendar',
+    description: 'Sync configuration table for Google/Apple Calendar',
     up: `
       CREATE TABLE IF NOT EXISTS sync_config (
         key        TEXT PRIMARY KEY,
@@ -282,7 +282,7 @@ const MIGRATIONS = [
   },
   {
     version: 3,
-    description: 'Wiederkehrende Budget-Einträge: parent-Referenz und Skip-Tabelle',
+    description: 'Recurring budget entries: parent reference and skip table',
     up: `
       ALTER TABLE budget_entries ADD COLUMN recurrence_parent_id INTEGER
         REFERENCES budget_entries(id) ON DELETE SET NULL;
@@ -298,7 +298,7 @@ const MIGRATIONS = [
   },
   {
     version: 4,
-    description: 'Priorität "none" erlauben und als Default setzen',
+    description: 'Allow "none" priority and set it as default',
     up: `
       -- SQLite erlaubt kein ALTER CHECK, daher Tabelle neu erstellen
       CREATE TABLE tasks_new (
@@ -333,7 +333,7 @@ const MIGRATIONS = [
   },
   {
     version: 5,
-    description: 'Einkaufskategorien als eigene Tabelle (anpassbar, sortierbar)',
+    description: 'Shopping categories as a separate table (customizable, sortable)',
     up: `
       CREATE TABLE IF NOT EXISTS shopping_categories (
         id         INTEGER PRIMARY KEY AUTOINCREMENT,
@@ -357,21 +357,21 @@ const MIGRATIONS = [
   },
   {
     version: 6,
-    description: 'Rezept-URL für Mahlzeiten',
+    description: 'Recipe URL for meals',
     up: `
       ALTER TABLE meals ADD COLUMN recipe_url TEXT;
     `,
   },
   {
     version: 7,
-    description: 'Kategorie pro Zutat für Einkaufslisten-Transfer',
+    description: 'Category per ingredient for shopping list transfer',
     up: `
       ALTER TABLE meal_ingredients ADD COLUMN category TEXT NOT NULL DEFAULT 'Sonstiges';
     `,
   },
   {
     version: 8,
-    description: 'Erinnerungen (Reminders) für Aufgaben und Kalender-Events',
+    description: 'Reminders for tasks and calendar events',
     up: `
       CREATE TABLE IF NOT EXISTS reminders (
         id          INTEGER PRIMARY KEY AUTOINCREMENT,
@@ -390,7 +390,7 @@ const MIGRATIONS = [
   },
   {
     version: 9,
-    description: 'Task-Kategorien auf englische Schlüssel migrieren',
+    description: 'Migrate task categories to English keys',
     up: `
       UPDATE tasks SET category = CASE category
         WHEN 'Haushalt'   THEN 'household'
@@ -407,7 +407,7 @@ const MIGRATIONS = [
   },
   {
     version: 10,
-    description: 'ICS-Abonnements Tabelle',
+    description: 'ICS subscriptions table',
     up: `
       CREATE TABLE IF NOT EXISTS ics_subscriptions (
         id            INTEGER PRIMARY KEY AUTOINCREMENT,
@@ -477,7 +477,7 @@ const MIGRATIONS = [
   },
   {
     version: 12,
-    description: 'calendar_events: partiellen Unique-Index durch vollständigen ersetzen (ON CONFLICT support)',
+    description: 'calendar_events: replace partial unique index with full index (ON CONFLICT support)',
     up: `
       DROP INDEX IF EXISTS idx_calendar_sub_extid;
       CREATE UNIQUE INDEX idx_calendar_sub_extid
@@ -486,7 +486,7 @@ const MIGRATIONS = [
   },
   {
     version: 13,
-    description: 'Rezepte-Tabelle und Mahlzeiten-Verknuepfung',
+    description: 'Recipes table and meal association',
     up: `
       CREATE TABLE IF NOT EXISTS recipes (
         id         INTEGER PRIMARY KEY AUTOINCREMENT,
@@ -525,7 +525,7 @@ const MIGRATIONS = [
   },
   {
     version: 14,
-    description: 'Externe Kalender-Metadaten (Name, Farbe) und Verknüpfung mit Events',
+    description: 'External calendar metadata (name, color) and event association',
     up: `
       CREATE TABLE IF NOT EXISTS external_calendars (
         id          INTEGER PRIMARY KEY AUTOINCREMENT,
@@ -544,6 +544,133 @@ const MIGRATIONS = [
       CREATE INDEX IF NOT EXISTS idx_cal_events_ref ON calendar_events(calendar_ref_id);
     `,
   },
+  {
+    version: 15,
+    description: 'Budget expense categories as stable keys with subcategories',
+    up: `
+      ALTER TABLE budget_entries ADD COLUMN subcategory TEXT NOT NULL DEFAULT '';
+
+      UPDATE budget_entries
+      SET category = CASE category
+        WHEN 'Lebensmittel' THEN 'food'
+        WHEN 'Miete' THEN 'housing'
+        WHEN 'Versicherung' THEN 'financial_other'
+        WHEN 'Mobilität' THEN 'transport'
+        WHEN 'Freizeit' THEN 'leisure'
+        WHEN 'Kleidung' THEN 'shopping_clothing'
+        WHEN 'Gesundheit' THEN 'personal_health'
+        WHEN 'Bildung' THEN 'education'
+        WHEN 'Sonstiges' THEN 'financial_other'
+        ELSE category
+      END
+      WHERE amount < 0;
+
+      UPDATE budget_entries
+      SET subcategory = CASE category
+        WHEN 'housing' THEN 'rent_mortgage'
+        WHEN 'food' THEN 'groceries'
+        WHEN 'transport' THEN 'fuel'
+        WHEN 'personal_health' THEN 'pharmacy'
+        WHEN 'leisure' THEN 'events'
+        WHEN 'shopping_clothing' THEN 'clothes_shoes'
+        WHEN 'education' THEN 'courses_college'
+        WHEN 'financial_other' THEN 'insurance_other'
+        ELSE ''
+      END
+      WHERE amount < 0 AND subcategory = '';
+
+      UPDATE budget_entries
+      SET category = 'Sonstiges Einkommen'
+      WHERE amount > 0 AND category = 'Sonstiges';
+    `,
+  },
+  {
+    version: 16,
+    description: 'Move budget categories and subcategories to separate tables',
+    up: `
+      CREATE TABLE IF NOT EXISTS budget_categories (
+        key        TEXT PRIMARY KEY,
+        name       TEXT    NOT NULL,
+        type       TEXT    NOT NULL CHECK(type IN ('expense', 'income')),
+        sort_order INTEGER NOT NULL DEFAULT 0,
+        created_at TEXT    NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%SZ', 'now'))
+      );
+
+      CREATE TABLE IF NOT EXISTS budget_subcategories (
+        key          TEXT PRIMARY KEY,
+        category_key TEXT    NOT NULL REFERENCES budget_categories(key) ON DELETE CASCADE,
+        name         TEXT    NOT NULL,
+        sort_order   INTEGER NOT NULL DEFAULT 0,
+        created_at   TEXT    NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%SZ', 'now')),
+        UNIQUE(category_key, name)
+      );
+
+      INSERT OR IGNORE INTO budget_categories (key, name, type, sort_order) VALUES
+        ('housing', 'Housing / Home', 'expense', 0),
+        ('food', 'Food', 'expense', 1),
+        ('transport', 'Transport', 'expense', 2),
+        ('personal_health', 'Personal Care / Health', 'expense', 3),
+        ('leisure', 'Leisure and Entertainment', 'expense', 4),
+        ('shopping_clothing', 'Shopping and Clothing', 'expense', 5),
+        ('education', 'Education', 'expense', 6),
+        ('financial_other', 'Financial Services and Other', 'expense', 7),
+        ('Erwerbseinkommen', 'Erwerbseinkommen', 'income', 0),
+        ('Kapitalerträge', 'Kapitalerträge', 'income', 1),
+        ('Geschenke & Transfers', 'Geschenke & Transfers', 'income', 2),
+        ('Sozialleistungen', 'Sozialleistungen', 'income', 3),
+        ('Sonstiges Einkommen', 'Sonstiges Einkommen', 'income', 4);
+
+      INSERT OR IGNORE INTO budget_subcategories (key, category_key, name, sort_order) VALUES
+        ('rent_mortgage', 'housing', 'Rent / Mortgage', 0),
+        ('condominium', 'housing', 'Condominium fees', 1),
+        ('utilities', 'housing', 'Electricity / Water / Gas', 2),
+        ('internet_tv_phone', 'housing', 'Internet / TV / Phone', 3),
+        ('renovation_maintenance', 'housing', 'Renovation / Maintenance', 4),
+        ('cleaning', 'housing', 'Cleaning', 5),
+        ('groceries', 'food', 'Groceries', 0),
+        ('restaurants_bars', 'food', 'Restaurants / Bars', 1),
+        ('snacks_fast_food', 'food', 'Snacks / Fast Food', 2),
+        ('bakery', 'food', 'Bakery', 3),
+        ('fuel', 'transport', 'Fuel', 0),
+        ('parking_tolls', 'transport', 'Parking / Tolls', 1),
+        ('public_transport', 'transport', 'Public transport', 2),
+        ('apps_taxi', 'transport', 'Apps / Taxi', 3),
+        ('maintenance_insurance', 'transport', 'Maintenance / Insurance', 4),
+        ('pharmacy', 'personal_health', 'Pharmacy', 0),
+        ('health_insurance', 'personal_health', 'Health insurance', 1),
+        ('gym_sports', 'personal_health', 'Gym / Sports', 2),
+        ('beauty_cosmetics', 'personal_health', 'Beauty / Cosmetics', 3),
+        ('travel', 'leisure', 'Travel', 0),
+        ('streaming', 'leisure', 'Streaming', 1),
+        ('events', 'leisure', 'Events', 2),
+        ('hobbies', 'leisure', 'Hobbies', 3),
+        ('clothes_shoes', 'shopping_clothing', 'Clothes / Shoes', 0),
+        ('electronics', 'shopping_clothing', 'Electronics', 1),
+        ('gifts', 'shopping_clothing', 'Gifts', 2),
+        ('courses_college', 'education', 'Courses / College', 0),
+        ('school_supplies', 'education', 'School supplies', 1),
+        ('languages', 'education', 'Languages', 2),
+        ('loans_interest', 'financial_other', 'Loans / Interest', 0),
+        ('bank_fees', 'financial_other', 'Bank fees', 1),
+        ('insurance_other', 'financial_other', 'Insurance', 2),
+        ('investments', 'financial_other', 'Investments', 3),
+        ('taxes', 'financial_other', 'Taxes', 4);
+
+      INSERT OR IGNORE INTO budget_categories (key, name, type, sort_order)
+      SELECT category, category, CASE WHEN amount < 0 THEN 'expense' ELSE 'income' END, 1000
+      FROM budget_entries
+      WHERE category NOT IN (SELECT key FROM budget_categories)
+      GROUP BY category;
+
+      INSERT OR IGNORE INTO budget_subcategories (key, category_key, name, sort_order)
+      SELECT subcategory, category, subcategory, 1000
+      FROM budget_entries
+      WHERE subcategory != ''
+        AND subcategory NOT IN (SELECT key FROM budget_subcategories)
+        AND category IN (SELECT key FROM budget_categories WHERE type = 'expense')
+      GROUP BY category, subcategory;
+    `,
+  },
 ];
 
 /**
@@ -571,7 +698,7 @@ function migrate() {
     db.exec(migration.up);
     db.prepare('INSERT INTO schema_migrations (version, description) VALUES (?, ?)')
       .run(migration.version, migration.description);
-    log.info(`Migration ${migration.version} angewendet: ${migration.description}`);
+    log.info(`Migration ${migration.version} applied: ${migration.description}`);
   });
 
   for (const migration of pending) {
@@ -602,7 +729,7 @@ function currentVersion() {
  * @returns {import('better-sqlite3').Database}
  */
 function get() {
-  if (!db) throw new Error('[DB] Nicht initialisiert - init() zuerst aufrufen.');
+  if (!db) throw new Error('[DB] Not initialized - call init() first.');
   return db;
 }
 

server/index.js

@@ -90,10 +90,10 @@ app.use(express.urlencoded({ extended: true, limit: '1mb' }));
 // JSON-Parse-Fehler abfangen (gibt sonst HTML zurück)
 app.use((err, req, res, next) => {
   if (err.type === 'entity.parse.failed') {
-    return res.status(400).json({ error: 'Ungültiges JSON im Request-Body.', code: 400 });
+    return res.status(400).json({ error: 'Invalid JSON in request body.', code: 400 });
   }
   if (err.type === 'entity.too.large') {
-    return res.status(413).json({ error: 'Request-Body zu groß (max. 1 MB).', code: 413 });
+    return res.status(413).json({ error: 'Request body too large (max. 1 MB).', code: 413 });
   }
   next(err);
 });
@@ -151,7 +151,7 @@ const apiLimiter = rateLimit({
   max: 300,                 // 300 Requests/Minute pro IP (großzügig für Familien-App)
   standardHeaders: true,
   legacyHeaders: false,
-  message: { error: 'Zu viele Anfragen. Bitte warte kurz.', code: 429 },
+  message: { error: 'Too many requests. Please wait a moment.', code: 429 },
   skip: (req) => req.path === '/health', // Health-Check ausgenommen
 });
 app.use('/api/', apiLimiter);
@@ -198,7 +198,7 @@ const spaLimiter = rateLimit({
   max: 200,
   standardHeaders: true,
   legacyHeaders: false,
-  message: { error: 'Zu viele Anfragen. Bitte warte kurz.', code: 429 },
+  message: { error: 'Too many requests. Please wait a moment.', code: 429 },
 });
 
 // --------------------------------------------------------
@@ -206,7 +206,7 @@ const spaLimiter = rateLimit({
 // --------------------------------------------------------
 app.get('/{*path}', spaLimiter, (req, res) => {
   if (req.path.startsWith('/api/')) {
-    return res.status(404).json({ error: 'Nicht gefunden.', code: 404 });
+    return res.status(404).json({ error: 'Not found.', code: 404 });
   }
   res.sendFile(path.join(import.meta.dirname, '..', 'public', 'index.html'));
 });
@@ -215,8 +215,8 @@ app.get('/{*path}', spaLimiter, (req, res) => {
 // Globaler Error-Handler
 // --------------------------------------------------------
 app.use((err, req, res, _next) => {
-  log.error('Unbehandelter Fehler:', err);
-  res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+  log.error('Unhandled error:', err);
+  res.status(500).json({ error: 'Internal server error.', code: 500 });
 });
 
 // --------------------------------------------------------
@@ -228,30 +228,30 @@ const SYNC_INTERVAL_MS = (parseInt(process.env.SYNC_INTERVAL_MINUTES, 10) || 15)
 async function runSync() {
   const { connected: googleConnected } = googleCalendar.getStatus();
   if (googleConnected) {
-    googleCalendar.sync().catch((e) => logSync.error('Google Fehler:', e.message));
+    googleCalendar.sync().catch((e) => logSync.error('Google error:', e.message));
   }
 
   const { configured: appleConfigured } = appleCalendar.getStatus();
   if (appleConfigured) {
-    appleCalendar.sync().catch((e) => logSync.error('Apple Fehler:', e.message));
+    appleCalendar.sync().catch((e) => logSync.error('Apple error:', e.message));
   }
 
   // ICS: kein Guard nötig — sync() fragt die DB ab und kehrt sofort zurück wenn keine Abonnements existieren
-  icsSubscription.sync().catch((e) => logSync.error('ICS Fehler:', e.message));
+  icsSubscription.sync().catch((e) => logSync.error('ICS error:', e.message));
 }
 
 // --------------------------------------------------------
 // Server starten
 // --------------------------------------------------------
 app.listen(PORT, () => {
-  logOikos.info(`Server laeuft auf Port ${PORT}`);
-  logOikos.info(`Umgebung: ${process.env.NODE_ENV || 'development'}`);
+  logOikos.info(`Server running on port ${PORT}`);
+  logOikos.info(`Environment: ${process.env.NODE_ENV || 'development'}`);
 
   // Erster Sync nach 10 Sekunden (warten bis DB vollständig initialisiert)
   setTimeout(() => {
     runSync();
     setInterval(runSync, SYNC_INTERVAL_MS);
-    logSync.info(`Auto-Sync alle ${SYNC_INTERVAL_MS / 60_000} Minuten aktiv.`);
+    logSync.info(`Auto-sync active every ${SYNC_INTERVAL_MS / 60_000} minutes.`);
   }, 10_000);
 });
 

server/middleware/csrf.js

@@ -71,7 +71,7 @@ function csrfMiddleware(req, res, next) {
   }
 
   if (!tokenValid) {
-    return res.status(403).json({ error: 'Ungültiges CSRF-Token.', code: 403 });
+    return res.status(403).json({ error: 'Invalid CSRF token.', code: 403 });
   }
 
   next();

server/middleware/validate.js

@@ -29,12 +29,12 @@ const RRULE_RE    = /^(FREQ=(DAILY|WEEKLY|MONTHLY)(;INTERVAL=\d{1,2})?(;BYDAY=[A
  */
 function str(val, field, { max = MAX_TITLE, required = true } = {}) {
   if (val === undefined || val === null || val === '') {
-    if (required) return { value: null, error: `${field} ist erforderlich.` };
+    if (required) return { value: null, error: `${field} is required.` };
     return { value: null, error: null };
   }
   const s = String(val).trim();
-  if (required && !s) return { value: null, error: `${field} darf nicht leer sein.` };
-  if (s.length > max)  return { value: null, error: `${field} darf maximal ${max} Zeichen haben.` };
+  if (required && !s) return { value: null, error: `${field} must not be empty.` };
+  if (s.length > max)  return { value: null, error: `${field} may be at most ${max} characters long.` };
   return { value: s || null, error: null };
 }
 
@@ -48,7 +48,7 @@ function str(val, field, { max = MAX_TITLE, required = true } = {}) {
 function oneOf(val, allowed, field) {
   if (val === undefined || val === null || val === '') return { value: null, error: null };
   if (!allowed.includes(val))
-    return { value: null, error: `${field} muss eines von: ${allowed.join(', ')} sein.` };
+    return { value: null, error: `${field} must be one of: ${allowed.join(', ')}.` };
   return { value: val, error: null };
 }
 
@@ -60,11 +60,11 @@ function oneOf(val, allowed, field) {
  */
 function date(val, field, required = false) {
   if (!val) {
-    if (required) return { value: null, error: `${field} ist erforderlich.` };
+    if (required) return { value: null, error: `${field} is required.` };
     return { value: null, error: null };
   }
   if (!/^\d{4}-\d{2}-\d{2}$/.test(String(val)))
-    return { value: null, error: `${field} muss im Format YYYY-MM-DD sein.` };
+    return { value: null, error: `${field} must be in YYYY-MM-DD format.` };
   return { value: String(val), error: null };
 }
 
@@ -74,7 +74,7 @@ function date(val, field, required = false) {
 function time(val, field) {
   if (!val) return { value: null, error: null };
   if (!/^\d{2}:\d{2}$/.test(String(val)))
-    return { value: null, error: `${field} muss im Format HH:MM sein.` };
+    return { value: null, error: `${field} must be in HH:MM format.` };
   return { value: String(val), error: null };
 }
 
@@ -83,11 +83,11 @@ function time(val, field) {
  */
 function num(val, field, { required = false } = {}) {
   if (val === undefined || val === null || val === '') {
-    if (required) return { value: null, error: `${field} ist erforderlich.` };
+    if (required) return { value: null, error: `${field} is required.` };
     return { value: null, error: null };
   }
   const n = Number(val);
-  if (!isFinite(n)) return { value: null, error: `${field} muss eine gültige Zahl sein.` };
+  if (!isFinite(n)) return { value: null, error: `${field} must be a valid number.` };
   return { value: n, error: null };
 }
 
@@ -97,7 +97,7 @@ function num(val, field, { required = false } = {}) {
 function color(val, field) {
   if (!val) return { value: null, error: null };
   if (!/^#[0-9A-Fa-f]{6}$/.test(String(val)))
-    return { value: null, error: `${field} muss ein gültiger HEX-Farbwert sein (#RRGGBB).` };
+    return { value: null, error: `${field} must be a valid HEX color (#RRGGBB).` };
   return { value: String(val), error: null };
 }
 
@@ -115,11 +115,11 @@ function collectErrors(results) {
  */
 function datetime(val, field, required = false) {
   if (!val) {
-    if (required) return { value: null, error: `${field} ist erforderlich.` };
+    if (required) return { value: null, error: `${field} is required.` };
     return { value: null, error: null };
   }
   if (!DATETIME_RE.test(String(val)))
-    return { value: null, error: `${field} muss im Format YYYY-MM-DD oder YYYY-MM-DDTHH:MM sein.` };
+    return { value: null, error: `${field} must be in YYYY-MM-DD or YYYY-MM-DDTHH:MM format.` };
   return { value: String(val), error: null };
 }
 
@@ -129,7 +129,7 @@ function datetime(val, field, required = false) {
 function month(val, field) {
   if (!val) return { value: null, error: null };
   if (!MONTH_RE.test(String(val)))
-    return { value: null, error: `${field} muss im Format YYYY-MM sein.` };
+    return { value: null, error: `${field} must be in YYYY-MM format.` };
   return { value: String(val), error: null };
 }
 
@@ -140,10 +140,10 @@ function rrule(val, field) {
   if (!val) return { value: null, error: null };
   const s = String(val).trim();
   if (s.length > MAX_RRULE)
-    return { value: null, error: `${field} darf maximal ${MAX_RRULE} Zeichen haben.` };
+    return { value: null, error: `${field} may be at most ${MAX_RRULE} characters long.` };
   // Grundlegende Struktur: KEY=VALUE;KEY=VALUE
   if (!/^FREQ=(DAILY|WEEKLY|MONTHLY)/.test(s))
-    return { value: null, error: `${field}: Ungültige Wiederholungsregel.` };
+    return { value: null, error: `${field}: invalid recurrence rule.` };
   return { value: s, error: null };
 }
 
@@ -152,7 +152,7 @@ function rrule(val, field) {
  */
 function id(val, field) {
   const n = parseInt(val, 10);
-  if (!n || n < 1) return { value: null, error: `${field} muss eine positive Zahl sein.` };
+  if (!n || n < 1) return { value: null, error: `${field} must be a positive number.` };
   return { value: n, error: null };
 }
 

server/routes/budget.js

@@ -7,7 +7,7 @@
 import { createLogger } from '../logger.js';
 import express from 'express';
 import * as db from '../db.js';
-import { str, oneOf, date as validateDate, num, rrule, collectErrors, MAX_TITLE, MONTH_RE } from '../middleware/validate.js';
+import { str, oneOf, date as validateDate, num, rrule, collectErrors, MAX_TITLE, MAX_SHORT, MONTH_RE } from '../middleware/validate.js';
 
 const log = createLogger('Budget');
 
@@ -57,23 +57,87 @@ function generateRecurringInstances(database, month) {
 
     database.prepare(`
       INSERT INTO budget_entries
-        (title, amount, category, date, is_recurring, recurrence_parent_id, created_by)
-      VALUES (?, ?, ?, ?, 0, ?, ?)
-    `).run(orig.title, orig.amount, orig.category, instanceDate, orig.id, orig.created_by);
+        (title, amount, category, subcategory, date, is_recurring, recurrence_parent_id, created_by)
+      VALUES (?, ?, ?, ?, ?, 0, ?, ?)
+    `).run(orig.title, orig.amount, orig.category, orig.subcategory || '', instanceDate, orig.id, orig.created_by);
   }
 }
 
-const EXPENSE_CATEGORIES = [
-  'Lebensmittel', 'Miete', 'Versicherung', 'Mobilität',
-  'Freizeit', 'Kleidung', 'Gesundheit', 'Bildung', 'Sonstiges',
-];
+function slugify(value) {
+  return String(value || '')
+    .normalize('NFD')
+    .replace(/[\u0300-\u036f]/g, '')
+    .toLowerCase()
+    .replace(/[^a-z0-9]+/g, '_')
+    .replace(/^_+|_+$/g, '')
+    .slice(0, 48) || 'category';
+}
 
-const INCOME_CATEGORIES = [
-  'Erwerbseinkommen', 'Kapitalerträge', 'Geschenke & Transfers',
-  'Sozialleistungen', 'Sonstiges Einkommen',
-];
+function uniqueKey(table, base) {
+  const normalized = slugify(base);
+  let key = normalized;
+  let i = 2;
+  const exists = db.get().prepare(`SELECT 1 FROM ${table} WHERE key = ?`);
+  while (exists.get(key)) {
+    key = `${normalized}_${i}`;
+    i += 1;
+  }
+  return key;
+}
 
-const VALID_CATEGORIES = [...EXPENSE_CATEGORIES, ...INCOME_CATEGORIES];
+function loadBudgetMeta() {
+  const categories = db.get().prepare(`
+    SELECT key, name, type, sort_order
+    FROM budget_categories
+    ORDER BY type DESC, sort_order ASC, name COLLATE NOCASE ASC
+  `).all();
+  const subcategories = db.get().prepare(`
+    SELECT key, category_key, name, sort_order
+    FROM budget_subcategories
+    ORDER BY sort_order ASC, name COLLATE NOCASE ASC
+  `).all();
+
+  const expenseCategories = categories.filter((c) => c.type === 'expense');
+  const incomeCategories = categories.filter((c) => c.type === 'income');
+  const expenseSubcategories = {};
+  for (const sub of subcategories) {
+    if (!expenseSubcategories[sub.category_key]) expenseSubcategories[sub.category_key] = [];
+    expenseSubcategories[sub.category_key].push(sub);
+  }
+
+  return { categories, expenseCategories, incomeCategories, expenseSubcategories };
+}
+
+function validCategoryKeys() {
+  return db.get().prepare('SELECT key FROM budget_categories').all().map((c) => c.key);
+}
+
+function validExpenseCategoryKeys() {
+  return db.get().prepare("SELECT key FROM budget_categories WHERE type = 'expense'").all().map((c) => c.key);
+}
+
+function defaultCategory(type) {
+  const row = db.get().prepare(`
+    SELECT key FROM budget_categories WHERE type = ? ORDER BY sort_order ASC, name COLLATE NOCASE ASC LIMIT 1
+  `).get(type);
+  return row?.key || (type === 'expense' ? 'financial_other' : 'Sonstiges Einkommen');
+}
+
+function defaultSubcategory(category) {
+  const row = db.get().prepare(`
+    SELECT key FROM budget_subcategories WHERE category_key = ? ORDER BY sort_order ASC, name COLLATE NOCASE ASC LIMIT 1
+  `).get(category);
+  return row?.key || '';
+}
+
+function validateSubcategory(category, subcategory) {
+  if (!validExpenseCategoryKeys().includes(category)) return '';
+  if (!subcategory) return defaultSubcategory(category);
+  const row = db.get().prepare(`
+    SELECT 1 FROM budget_subcategories WHERE category_key = ? AND key = ?
+  `).get(category, subcategory);
+  return row ? subcategory : null;
+}
 
 // --------------------------------------------------------
 // Statische Routen vor /:id
@@ -127,7 +191,7 @@ router.get('/summary', (req, res) => {
     });
   } catch (err) {
     log.error('', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 
@@ -155,7 +219,7 @@ router.get('/export', (req, res) => {
       ORDER BY b.date ASC
     `).all(from, to);
 
-    const header = 'Datum,Titel,Betrag,Kategorie,Wiederkehrend,Erstellt von\n';
+    const header = 'Date,Title,Amount,Category,Subcategory,Recurring,Created by\n';
     const csvSafe = (val) => {
       let s = String(val || '').replace(/"/g, '""');
       if (/^[=+\-@\t\r]/.test(s)) s = "'" + s;
@@ -167,7 +231,8 @@ router.get('/export', (req, res) => {
         csvSafe(e.title),
         e.amount.toFixed(2).replace('.', ','),
         e.category,
-        e.is_recurring ? 'Ja' : 'Nein',
+        e.subcategory || '',
+        e.is_recurring ? 'Yes' : 'No',
         csvSafe(e.creator_name),
       ].join(',')
     ).join('\n');
@@ -177,7 +242,7 @@ router.get('/export', (req, res) => {
     res.send('\uFEFF' + header + rows); // BOM für Excel
   } catch (err) {
     log.error('', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 
@@ -187,7 +252,70 @@ router.get('/export', (req, res) => {
  * Response: { data: { categories } }
  */
 router.get('/meta', (req, res) => {
-  res.json({ data: { categories: VALID_CATEGORIES } });
+  res.json({ data: loadBudgetMeta() });
+});
+
+router.post('/categories', (req, res) => {
+  try {
+    const vName = str(req.body.name, 'Name', { max: MAX_SHORT });
+    const vType = oneOf(req.body.type || 'expense', ['expense', 'income'], 'Typ');
+    const errors = collectErrors([vName, vType]);
+    if (errors.length) return res.status(400).json({ error: errors.join(' '), code: 400 });
+
+    const conflict = db.get().prepare(`
+      SELECT key FROM budget_categories WHERE type = ? AND name = ? COLLATE NOCASE
+    `).get(vType.value, vName.value);
+    if (conflict) return res.status(409).json({ error: 'Category already exists.', code: 409 });
+
+    const maxOrder = db.get().prepare(`
+      SELECT COALESCE(MAX(sort_order), -1) AS m FROM budget_categories WHERE type = ?
+    `).get(vType.value).m;
+    const key = uniqueKey('budget_categories', vName.value);
+
+    db.get().prepare(`
+      INSERT INTO budget_categories (key, name, type, sort_order) VALUES (?, ?, ?, ?)
+    `).run(key, vName.value, vType.value, maxOrder + 1);
+
+    const cat = db.get().prepare('SELECT key, name, type, sort_order FROM budget_categories WHERE key = ?').get(key);
+    res.status(201).json({ data: cat });
+  } catch (err) {
+    log.error('POST /categories error:', err);
+    res.status(500).json({ error: 'Internal error', code: 500 });
+  }
+});
+
+router.post('/categories/:categoryKey/subcategories', (req, res) => {
+  try {
+    const cat = db.get().prepare(`
+      SELECT * FROM budget_categories WHERE key = ? AND type = 'expense'
+    `).get(req.params.categoryKey);
+    if (!cat) return res.status(404).json({ error: 'Category not found.', code: 404 });
+
+    const vName = str(req.body.name, 'Name', { max: MAX_SHORT });
+    if (vName.error) return res.status(400).json({ error: vName.error, code: 400 });
+
+    const conflict = db.get().prepare(`
+      SELECT key FROM budget_subcategories WHERE category_key = ? AND name = ? COLLATE NOCASE
+    `).get(cat.key, vName.value);
+    if (conflict) return res.status(409).json({ error: 'Subcategory already exists.', code: 409 });
+
+    const maxOrder = db.get().prepare(`
+      SELECT COALESCE(MAX(sort_order), -1) AS m FROM budget_subcategories WHERE category_key = ?
+    `).get(cat.key).m;
+    const key = uniqueKey('budget_subcategories', `${cat.key}_${vName.value}`);
+
+    db.get().prepare(`
+      INSERT INTO budget_subcategories (key, category_key, name, sort_order) VALUES (?, ?, ?, ?)
+    `).run(key, cat.key, vName.value, maxOrder + 1);
+
+    const sub = db.get().prepare(`
+      SELECT key, category_key, name, sort_order FROM budget_subcategories WHERE key = ?
+    `).get(key);
+    res.status(201).json({ data: sub });
+  } catch (err) {
+    log.error('POST /categories/:categoryKey/subcategories error:', err);
+    res.status(500).json({ error: 'Internal error', code: 500 });
+  }
 });
 
 // --------------------------------------------------------
@@ -220,7 +348,7 @@ router.get('/', (req, res) => {
     `;
     const params = [from, to];
 
-    if (req.query.category && VALID_CATEGORIES.includes(req.query.category)) {
+    if (req.query.category && validCategoryKeys().includes(req.query.category)) {
       sql += ' AND b.category = ?';
       params.push(req.query.category);
     }
@@ -231,31 +359,36 @@ router.get('/', (req, res) => {
     res.json({ data: entries });
   } catch (err) {
     log.error('', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 
 /**
  * POST /api/v1/budget
  * Neuen Eintrag anlegen.
- * Body: { title, amount, category?, date, is_recurring?, recurrence_rule? }
+ * Body: { title, amount, category?, subcategory?, date, is_recurring?, recurrence_rule? }
  * Response: { data: Entry }
  */
 router.post('/', (req, res) => {
   try {
     const vTitle  = str(req.body.title,    'Titel',  { max: MAX_TITLE });
     const vAmount = num(req.body.amount,  'Betrag', { required: true });
-    const vCat    = oneOf(req.body.category || 'Sonstiges', VALID_CATEGORIES, 'Kategorie');
+    const fallbackCategory = defaultCategory(Number(req.body.amount) < 0 ? 'expense' : 'income');
+    const vCat    = oneOf(req.body.category || fallbackCategory, validCategoryKeys(), 'Kategorie');
     const vDate   = validateDate(req.body.date,   'Datum',  true);
     const vRrule  = rrule(req.body.recurrence_rule, 'Wiederholung');
     const errors  = collectErrors([vTitle, vAmount, vCat, vDate, vRrule]);
     if (errors.length) return res.status(400).json({ error: errors.join(' '), code: 400 });
+    const subcategory = validateSubcategory(vCat.value, req.body.subcategory);
+    if (subcategory === null) {
+      return res.status(400).json({ error: 'Invalid subcategory.', code: 400 });
+    }
 
     const result = db.get().prepare(`
-      INSERT INTO budget_entries (title, amount, category, date, is_recurring, recurrence_rule, created_by)
-      VALUES (?, ?, ?, ?, ?, ?, ?)
+      INSERT INTO budget_entries (title, amount, category, subcategory, date, is_recurring, recurrence_rule, created_by)
+      VALUES (?, ?, ?, ?, ?, ?, ?, ?)
     `).run(
-      vTitle.value, vAmount.value, vCat.value || 'Sonstiges', vDate.value,
+      vTitle.value, vAmount.value, vCat.value || fallbackCategory, subcategory, vDate.value,
       req.body.is_recurring ? 1 : 0, vRrule.value,
       req.session.userId
     );
@@ -269,7 +402,7 @@ router.post('/', (req, res) => {
     res.status(201).json({ data: entry });
   } catch (err) {
     log.error('', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 
@@ -283,23 +416,31 @@ router.put('/:id', (req, res) => {
   try {
     const id    = parseInt(req.params.id, 10);
     const entry = db.get().prepare('SELECT * FROM budget_entries WHERE id = ?').get(id);
-    if (!entry) return res.status(404).json({ error: 'Eintrag nicht gefunden', code: 404 });
+    if (!entry) return res.status(404).json({ error: 'Entry not found', code: 404 });
 
     const checks = [];
     if (req.body.title    !== undefined) checks.push(str(req.body.title,    'Titel',  { max: MAX_TITLE, required: false }));
     if (req.body.amount   !== undefined) checks.push(num(req.body.amount,   'Betrag'));
-    if (req.body.category !== undefined) checks.push(oneOf(req.body.category, VALID_CATEGORIES, 'Kategorie'));
+    if (req.body.category !== undefined) checks.push(oneOf(req.body.category, validCategoryKeys(), 'Kategorie'));
     if (req.body.date     !== undefined) checks.push(validateDate(req.body.date,    'Datum'));
     if (req.body.recurrence_rule !== undefined) checks.push(rrule(req.body.recurrence_rule, 'Wiederholung'));
     const errors = collectErrors(checks);
     if (errors.length) return res.status(400).json({ error: errors.join(' '), code: 400 });
-    const { title, amount, category, date, is_recurring, recurrence_rule } = req.body;
+    const { title, amount, category, subcategory: requestedSubcategory, date, is_recurring, recurrence_rule } = req.body;
+    const nextCategory = category ?? entry.category;
+    const subcategory = requestedSubcategory !== undefined || category !== undefined
+      ? validateSubcategory(nextCategory, requestedSubcategory ?? entry.subcategory)
+      : undefined;
+    if (subcategory === null) {
+      return res.status(400).json({ error: 'Invalid subcategory.', code: 400 });
+    }
 
     db.get().prepare(`
       UPDATE budget_entries
       SET title           = COALESCE(?, title),
           amount          = COALESCE(?, amount),
           category        = COALESCE(?, category),
+          subcategory     = COALESCE(?, subcategory),
           date            = COALESCE(?, date),
           is_recurring    = COALESCE(?, is_recurring),
           recurrence_rule = ?
@@ -308,6 +449,7 @@ router.put('/:id', (req, res) => {
       title?.trim() ?? null,
       amount !== undefined ? Number(amount) : null,
       category ?? null,
+      subcategory !== undefined ? subcategory : null,
       date ?? null,
       is_recurring !== undefined ? (is_recurring ? 1 : 0) : null,
       recurrence_rule !== undefined ? (recurrence_rule || null) : entry.recurrence_rule,
@@ -322,7 +464,7 @@ router.put('/:id', (req, res) => {
     res.json({ data: updated });
   } catch (err) {
     log.error('', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 
@@ -335,7 +477,7 @@ router.delete('/:id', (req, res) => {
   try {
     const id    = parseInt(req.params.id, 10);
     const entry = db.get().prepare('SELECT * FROM budget_entries WHERE id = ?').get(id);
-    if (!entry) return res.status(404).json({ error: 'Eintrag nicht gefunden', code: 404 });
+    if (!entry) return res.status(404).json({ error: 'Entry not found', code: 404 });
 
     db.get().prepare('DELETE FROM budget_entries WHERE id = ?').run(id);
 
@@ -350,7 +492,7 @@ router.delete('/:id', (req, res) => {
     res.status(204).end();
   } catch (err) {
     log.error('', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 

server/routes/calendar.js

@@ -257,7 +257,7 @@ router.get('/google/callback', async (req, res) => {
     await googleCalendar.handleCallback(code);
 
     // Initialen Sync im Hintergrund starten (kein await - Redirect soll sofort erfolgen)
-    googleCalendar.sync().catch((e) => log.error('Initialer Sync fehlgeschlagen:', e.message));
+    googleCalendar.sync().catch((e) => log.error('Initial sync failed:', e.message));
 
     res.redirect('/settings?sync_ok=google');
   } catch (err) {

server/routes/dashboard.js

@@ -53,7 +53,7 @@ router.get('/', (req, res) => {
       LIMIT 5
     `).all(now.toISOString());
   } catch (err) {
-    log.error('upcomingEvents-Fehler:', err.message);
+    log.error('upcomingEvents error:', err.message);
     result.upcomingEvents = [];
   }
 
@@ -91,7 +91,7 @@ router.get('/', (req, res) => {
 
     result.urgentTasks = allOpen.slice(0, 5);
   } catch (err) {
-    log.error('urgentTasks-Fehler:', err.message);
+    log.error('urgentTasks error:', err.message);
     result.urgentTasks = [];
   }
 
@@ -116,7 +116,7 @@ router.get('/', (req, res) => {
         END
     `).all(todayStr, ...visibleTypes);
   } catch (err) {
-    log.error('todayMeals-Fehler:', err.message);
+    log.error('todayMeals error:', err.message);
     result.todayMeals = [];
   }
 
@@ -130,7 +130,7 @@ router.get('/', (req, res) => {
       LIMIT 3
     `).all();
   } catch (err) {
-    log.error('pinnedNotes-Fehler:', err.message);
+    log.error('pinnedNotes error:', err.message);
     result.pinnedNotes = [];
   }
 
@@ -157,7 +157,7 @@ router.get('/', (req, res) => {
     }
     result.shoppingLists = lists;
   } catch (err) {
-    log.error('shoppingLists-Fehler:', err.message);
+    log.error('shoppingLists error:', err.message);
     result.shoppingLists = [];
   }
 
@@ -172,8 +172,8 @@ router.get('/', (req, res) => {
 
   res.json(result);
   } catch (err) {
-    log.error('Kritischer Fehler:', err.message);
-    res.status(500).json({ error: 'Dashboard konnte nicht geladen werden.', code: 500 });
+    log.error('Critical error:', err.message);
+    res.status(500).json({ error: 'Dashboard could not be loaded.', code: 500 });
   }
 });
 

server/routes/recipes.js

@@ -59,8 +59,8 @@ router.get('/', (_req, res) => {
 
     res.json({ data: recipes.map((r) => ({ ...r, ingredients: ingredientMap[r.id] || [] })) });
   } catch (err) {
-    log.error('GET / Fehler:', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    log.error('GET / error:', err);
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 
@@ -100,8 +100,8 @@ router.post('/', (req, res) => {
     const created = loadRecipeWithIngredients(recipeId);
     res.status(201).json({ data: created });
   } catch (err) {
-    log.error('POST / Fehler:', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    log.error('POST / error:', err);
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 
@@ -111,8 +111,8 @@ router.put('/:id', (req, res) => {
     if (!id) return res.status(400).json({ error: 'Ungueltige Rezept-ID', code: 400 });
 
     const existing = db.get().prepare('SELECT id, created_by FROM recipes WHERE id = ?').get(id);
-    if (!existing) return res.status(404).json({ error: 'Rezept nicht gefunden', code: 404 });
-    if (existing.created_by !== req.session.userId) return res.status(403).json({ error: 'Nicht autorisiert.', code: 403 });
+    if (!existing) return res.status(404).json({ error: 'Recipe not found', code: 404 });
+    if (existing.created_by !== req.session.userId) return res.status(403).json({ error: 'Not authorized.', code: 403 });
 
     const { ingredients = [] } = req.body;
 
@@ -147,27 +147,27 @@ router.put('/:id', (req, res) => {
     const updated = loadRecipeWithIngredients(id);
     res.json({ data: updated });
   } catch (err) {
-    log.error('PUT /:id Fehler:', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    log.error('PUT /:id error:', err);
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 
 router.delete('/:id', (req, res) => {
   try {
     const id = parseInt(req.params.id, 10);
-    if (!id) return res.status(400).json({ error: 'Ungültige Rezept-ID.', code: 400 });
+    if (!id) return res.status(400).json({ error: 'Invalid recipe ID.', code: 400 });
 
     const existing = db.get().prepare('SELECT id, created_by FROM recipes WHERE id = ?').get(id);
-    if (!existing) return res.status(404).json({ error: 'Rezept nicht gefunden.', code: 404 });
-    if (existing.created_by !== req.session.userId) return res.status(403).json({ error: 'Nicht autorisiert.', code: 403 });
+    if (!existing) return res.status(404).json({ error: 'Recipe not found.', code: 404 });
+    if (existing.created_by !== req.session.userId) return res.status(403).json({ error: 'Not authorized.', code: 403 });
 
     const result = db.get().prepare('DELETE FROM recipes WHERE id = ?').run(id);
-    if (result.changes === 0) return res.status(404).json({ error: 'Rezept nicht gefunden', code: 404 });
+    if (result.changes === 0) return res.status(404).json({ error: 'Recipe not found', code: 404 });
 
     res.status(204).end();
   } catch (err) {
-    log.error('DELETE /:id Fehler:', err);
-    res.status(500).json({ error: 'Interner Fehler', code: 500 });
+    log.error('DELETE /:id error:', err);
+    res.status(500).json({ error: 'Internal error', code: 500 });
   }
 });
 

server/routes/reminders.js

@@ -41,8 +41,8 @@ router.get('/pending', (req, res) => {
 
     res.json({ data: rows });
   } catch (err) {
-    log.error('Fehler beim Laden fälliger Erinnerungen:', err.message);
-    res.status(500).json({ error: 'Interner Fehler.', code: 500 });
+    log.error('Error loading due reminders:', err.message);
+    res.status(500).json({ error: 'Internal error.', code: 500 });
   }
 });
 
@@ -69,8 +69,8 @@ router.get('/', (req, res) => {
 
     res.json({ data: row || null });
   } catch (err) {
-    log.error('Fehler beim Laden der Erinnerung:', err.message);
-    res.status(500).json({ error: 'Interner Fehler.', code: 500 });
+    log.error('Error loading reminder:', err.message);
+    res.status(500).json({ error: 'Internal error.', code: 500 });
   }
 });
 
@@ -115,8 +115,8 @@ router.post('/', (req, res) => {
     const row = db.get().prepare('SELECT * FROM reminders WHERE id = ?').get(result.lastInsertRowid);
     res.status(201).json({ data: row });
   } catch (err) {
-    log.error('Fehler beim Erstellen der Erinnerung:', err.message);
-    res.status(500).json({ error: 'Interner Fehler.', code: 500 });
+    log.error('Error creating reminder:', err.message);
+    res.status(500).json({ error: 'Internal error.', code: 500 });
   }
 });
 
@@ -145,8 +145,8 @@ router.patch('/:id/dismiss', (req, res) => {
     db.get().prepare('UPDATE reminders SET dismissed = 1 WHERE id = ?').run(reminderId);
     res.json({ data: { id: reminderId } });
   } catch (err) {
-    log.error('Fehler beim Verwerfen der Erinnerung:', err.message);
-    res.status(500).json({ error: 'Interner Fehler.', code: 500 });
+    log.error('Error dismissing reminder:', err.message);
+    res.status(500).json({ error: 'Internal error.', code: 500 });
   }
 });
 
@@ -175,8 +175,8 @@ router.delete('/:id', (req, res) => {
     db.get().prepare('DELETE FROM reminders WHERE id = ?').run(reminderId);
     res.status(204).end();
   } catch (err) {
-    log.error('Fehler beim Löschen der Erinnerung:', err.message);
-    res.status(500).json({ error: 'Interner Fehler.', code: 500 });
+    log.error('Error deleting reminder:', err.message);
+    res.status(500).json({ error: 'Internal error.', code: 500 });
   }
 });
 
@@ -202,8 +202,8 @@ router.delete('/', (req, res) => {
 
     res.status(204).end();
   } catch (err) {
-    log.error('Fehler beim Löschen der Erinnerungen:', err.message);
-    res.status(500).json({ error: 'Interner Fehler.', code: 500 });
+    log.error('Error deleting reminders:', err.message);
+    res.status(500).json({ error: 'Internal error.', code: 500 });
   }
 });
 

server/routes/shopping.js

@@ -39,8 +39,8 @@ router.get('/categories', (_req, res) => {
   try {
     res.json({ data: loadCategories() });
   } catch (err) {
-    log.error('GET /categories Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('GET /categories error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -58,7 +58,7 @@ router.post('/categories', (req, res) => {
     const existing = db.get()
       .prepare('SELECT id FROM shopping_categories WHERE name = ? COLLATE NOCASE')
       .get(vName.value);
-    if (existing) return res.status(409).json({ error: 'Kategorie existiert bereits.', code: 409 });
+    if (existing) return res.status(409).json({ error: 'Category already exists.', code: 409 });
 
     const maxOrder = db.get()
       .prepare('SELECT COALESCE(MAX(sort_order), -1) AS m FROM shopping_categories')
@@ -73,8 +73,8 @@ router.post('/categories', (req, res) => {
       .get(result.lastInsertRowid);
     res.status(201).json({ data: cat });
   } catch (err) {
-    log.error('POST /categories Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('POST /categories error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -89,7 +89,7 @@ router.put('/categories/:catId', (req, res) => {
     const cat = db.get()
       .prepare('SELECT * FROM shopping_categories WHERE id = ?')
       .get(req.params.catId);
-    if (!cat) return res.status(404).json({ error: 'Kategorie nicht gefunden.', code: 404 });
+    if (!cat) return res.status(404).json({ error: 'Category not found.', code: 404 });
 
     const vName = str(req.body.name, 'Name', { max: MAX_SHORT });
     if (vName.error) return res.status(400).json({ error: vName.error, code: 400 });
@@ -97,7 +97,7 @@ router.put('/categories/:catId', (req, res) => {
     const conflict = db.get()
       .prepare('SELECT id FROM shopping_categories WHERE name = ? COLLATE NOCASE AND id != ?')
       .get(vName.value, cat.id);
-    if (conflict) return res.status(409).json({ error: 'Kategorie existiert bereits.', code: 409 });
+    if (conflict) return res.status(409).json({ error: 'Category already exists.', code: 409 });
 
     // Artikel, die die alte Kategorie nutzen, mitumbenennen
     db.get().transaction(() => {
@@ -114,8 +114,8 @@ router.put('/categories/:catId', (req, res) => {
       .get(cat.id);
     res.json({ data: updated });
   } catch (err) {
-    log.error('PUT /categories/:catId Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('PUT /categories/:catId error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -130,12 +130,12 @@ router.delete('/categories/:catId', (req, res) => {
     const cat = db.get()
       .prepare('SELECT * FROM shopping_categories WHERE id = ?')
       .get(req.params.catId);
-    if (!cat) return res.status(404).json({ error: 'Kategorie nicht gefunden.', code: 404 });
+    if (!cat) return res.status(404).json({ error: 'Category not found.', code: 404 });
 
     const total = db.get()
       .prepare('SELECT COUNT(*) AS c FROM shopping_categories')
       .get().c;
-    if (total <= 1) return res.status(400).json({ error: 'Letzte Kategorie kann nicht gelöscht werden.', code: 400 });
+    if (total <= 1) return res.status(400).json({ error: 'The last category cannot be deleted.', code: 400 });
 
     // Fallback-Kategorie: erste andere Kategorie nach sort_order
     const fallback = db.get()
@@ -153,8 +153,8 @@ router.delete('/categories/:catId', (req, res) => {
 
     res.json({ ok: true });
   } catch (err) {
-    log.error('DELETE /categories/:catId Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('DELETE /categories/:catId error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -177,8 +177,8 @@ router.patch('/categories/reorder', (req, res) => {
 
     res.json({ data: loadCategories() });
   } catch (err) {
-    log.error('PATCH /categories/reorder Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('PATCH /categories/reorder error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -201,8 +201,8 @@ router.get('/suggestions', (req, res) => {
 
     res.json({ data: rows.map((r) => r.name) });
   } catch (err) {
-    log.error('suggestions Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('suggestions error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -217,7 +217,7 @@ router.patch('/items/:itemId', (req, res) => {
     const item = db.get()
       .prepare('SELECT * FROM shopping_items WHERE id = ?')
       .get(req.params.itemId);
-    if (!item) return res.status(404).json({ error: 'Artikel nicht gefunden.', code: 404 });
+    if (!item) return res.status(404).json({ error: 'Item not found.', code: 404 });
 
     const {
       is_checked = item.is_checked,
@@ -230,7 +230,7 @@ router.patch('/items/:itemId', (req, res) => {
 
     const validNames = validCategoryNames();
     if (category && !validNames.includes(category))
-      return res.status(400).json({ error: 'Ungültige Kategorie.', code: 400 });
+      return res.status(400).json({ error: 'Invalid category.', code: 400 });
 
     db.get().prepare(`
       UPDATE shopping_items
@@ -243,8 +243,8 @@ router.patch('/items/:itemId', (req, res) => {
       .get(req.params.itemId);
     res.json({ data: updated });
   } catch (err) {
-    log.error('PATCH items/:id Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('PATCH items/:id error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -259,11 +259,11 @@ router.delete('/items/:itemId', (req, res) => {
       .prepare('DELETE FROM shopping_items WHERE id = ?')
       .run(req.params.itemId);
     if (result.changes === 0)
-      return res.status(404).json({ error: 'Artikel nicht gefunden.', code: 404 });
+      return res.status(404).json({ error: 'Item not found.', code: 404 });
     res.json({ ok: true });
   } catch (err) {
-    log.error('DELETE items/:id Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('DELETE items/:id error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -286,8 +286,8 @@ router.get('/', (req, res) => {
     `).all();
     res.json({ data: lists });
   } catch (err) {
-    log.error('GET / Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('GET / error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -311,8 +311,8 @@ router.post('/', (req, res) => {
       .get(result.lastInsertRowid);
     res.status(201).json({ data: list });
   } catch (err) {
-    log.error('POST / Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('POST / error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -331,15 +331,15 @@ router.put('/:listId', (req, res) => {
       .prepare('UPDATE shopping_lists SET name = ? WHERE id = ?')
       .run(vName.value, req.params.listId);
     if (result.changes === 0)
-      return res.status(404).json({ error: 'Liste nicht gefunden.', code: 404 });
+      return res.status(404).json({ error: 'List not found.', code: 404 });
 
     const list = db.get()
       .prepare('SELECT * FROM shopping_lists WHERE id = ?')
       .get(req.params.listId);
     res.json({ data: list });
   } catch (err) {
-    log.error('PUT /:listId Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('PUT /:listId error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -354,11 +354,11 @@ router.delete('/:listId', (req, res) => {
       .prepare('DELETE FROM shopping_lists WHERE id = ?')
       .run(req.params.listId);
     if (result.changes === 0)
-      return res.status(404).json({ error: 'Liste nicht gefunden.', code: 404 });
+      return res.status(404).json({ error: 'List not found.', code: 404 });
     res.json({ ok: true });
   } catch (err) {
-    log.error('DELETE /:listId Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('DELETE /:listId error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -373,7 +373,7 @@ router.get('/:listId/items', (req, res) => {
     const list = db.get()
       .prepare('SELECT * FROM shopping_lists WHERE id = ?')
       .get(req.params.listId);
-    if (!list) return res.status(404).json({ error: 'Liste nicht gefunden.', code: 404 });
+    if (!list) return res.status(404).json({ error: 'List not found.', code: 404 });
 
     const categories = loadCategories();
     const categoryOrder = categories.map((c, i) => `WHEN '${c.name.replace(/'/g, "''")}' THEN ${i}`).join(' ');
@@ -389,8 +389,8 @@ router.get('/:listId/items', (req, res) => {
 
     res.json({ data: items, list, categories });
   } catch (err) {
-    log.error('GET /:listId/items Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('GET /:listId/items error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -405,7 +405,7 @@ router.post('/:listId/items', (req, res) => {
     const list = db.get()
       .prepare('SELECT id FROM shopping_lists WHERE id = ?')
       .get(req.params.listId);
-    if (!list) return res.status(404).json({ error: 'Liste nicht gefunden.', code: 404 });
+    if (!list) return res.status(404).json({ error: 'List not found.', code: 404 });
 
     const validNames = validCategoryNames();
     const defaultCat = validNames[0] ?? 'Sonstiges';
@@ -427,8 +427,8 @@ router.post('/:listId/items', (req, res) => {
       .get(result.lastInsertRowid);
     res.status(201).json({ data: item });
   } catch (err) {
-    log.error('POST /:listId/items Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('POST /:listId/items error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -444,8 +444,8 @@ router.delete('/:listId/items/checked', (req, res) => {
     `).run(req.params.listId);
     res.json({ deleted: result.changes });
   } catch (err) {
-    log.error('DELETE /:listId/items/checked Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('DELETE /:listId/items/checked error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 

server/routes/tasks.js

@@ -103,8 +103,8 @@ router.get('/', (req, res) => {
 
     res.json({ data: db.get().prepare(sql).all(...params) });
   } catch (err) {
-    log.error('GET / Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('GET / error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -122,13 +122,13 @@ router.get('/:id', (req, res) => {
       WHERE t.id = ? AND t.parent_task_id IS NULL
     `).get(req.params.id);
 
-    if (!task) return res.status(404).json({ error: 'Aufgabe nicht gefunden.', code: 404 });
+    if (!task) return res.status(404).json({ error: 'Task not found.', code: 404 });
 
     task.subtasks = loadSubtasks(task.id);
     res.json({ data: task });
   } catch (err) {
-    log.error('GET /:id Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('GET /:id error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -161,7 +161,7 @@ router.post('/', (req, res) => {
     if (parent_task_id) {
       const parent = db.get().prepare('SELECT parent_task_id FROM tasks WHERE id = ?')
         .get(parent_task_id);
-      if (!parent) return res.status(404).json({ error: 'Übergeordnete Aufgabe nicht gefunden.', code: 404 });
+      if (!parent) return res.status(404).json({ error: 'Parent task not found.', code: 404 });
       if (parent.parent_task_id)
         return res.status(400).json({ error: 'Maximal 2 Verschachtelungsebenen erlaubt.', code: 400 });
     }
@@ -185,8 +185,8 @@ router.post('/', (req, res) => {
 
     res.status(201).json({ data: task });
   } catch (err) {
-    log.error('POST / Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('POST / error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -200,7 +200,7 @@ router.post('/', (req, res) => {
 router.put('/:id', (req, res) => {
   try {
     const task = db.get().prepare('SELECT * FROM tasks WHERE id = ?').get(req.params.id);
-    if (!task) return res.status(404).json({ error: 'Aufgabe nicht gefunden.', code: 404 });
+    if (!task) return res.status(404).json({ error: 'Task not found.', code: 404 });
 
     const errors = validateTaskInput(req.body, false);
     if (errors.length) return res.status(400).json({ error: errors.join(' '), code: 400 });
@@ -237,8 +237,8 @@ router.put('/:id', (req, res) => {
 
     res.json({ data: updated });
   } catch (err) {
-    log.error('PUT /:id Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('PUT /:id error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -252,13 +252,13 @@ router.patch('/:id/status', (req, res) => {
   try {
     const { status } = req.body;
     if (!VALID_STATUSES.includes(status))
-      return res.status(400).json({ error: `Ungültiger Status. Erlaubt: ${VALID_STATUSES.join(', ')}`, code: 400 });
+      return res.status(400).json({ error: `Invalid status. Allowed: ${VALID_STATUSES.join(', ')}`, code: 400 });
 
     const result = db.get().prepare('UPDATE tasks SET status = ? WHERE id = ?')
       .run(status, req.params.id);
 
     if (result.changes === 0)
-      return res.status(404).json({ error: 'Aufgabe nicht gefunden.', code: 404 });
+      return res.status(404).json({ error: 'Task not found.', code: 404 });
 
     // Wiederkehrende Aufgabe: nächste Instanz erstellen wenn erledigt
     if (status === 'done') {
@@ -281,8 +281,8 @@ router.patch('/:id/status', (req, res) => {
 
     res.json({ data: { id: Number(req.params.id), status } });
   } catch (err) {
-    log.error('PATCH /:id/status Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('PATCH /:id/status error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -295,11 +295,11 @@ router.delete('/:id', (req, res) => {
   try {
     const result = db.get().prepare('DELETE FROM tasks WHERE id = ?').run(req.params.id);
     if (result.changes === 0)
-      return res.status(404).json({ error: 'Aufgabe nicht gefunden.', code: 404 });
+      return res.status(404).json({ error: 'Task not found.', code: 404 });
     res.json({ ok: true });
   } catch (err) {
-    log.error('DELETE /:id Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('DELETE /:id error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 
@@ -315,8 +315,8 @@ router.get('/meta/options', (req, res) => {
     ).all();
     res.json({ users, priorities: VALID_PRIORITIES, statuses: VALID_STATUSES, categories: VALID_CATEGORIES });
   } catch (err) {
-    log.error('GET /meta/options Fehler:', err);
-    res.status(500).json({ error: 'Interner Serverfehler.', code: 500 });
+    log.error('GET /meta/options error:', err);
+    res.status(500).json({ error: 'Internal server error.', code: 500 });
   }
 });
 

server/routes/weather.js

@@ -45,7 +45,7 @@ router.get('/', async (req, res) => {
     const currentUrl = `https://api.openweathermap.org/data/2.5/weather?q=${encodeURIComponent(city)}&appid=${apiKey}&units=${units}&lang=${lang}`;
     const currentRes = await fetch(currentUrl, { signal: AbortSignal.timeout(8000) });
     if (!currentRes.ok) {
-      log.warn(`API Fehler: ${currentRes.status}`);
+      log.warn(`API error: ${currentRes.status}`);
       return res.json({ data: null });
     }
     const currentJson = await currentRes.json();
@@ -116,7 +116,7 @@ router.get('/', async (req, res) => {
     cache = { data, ts: Date.now() };
     res.json({ data });
   } catch (err) {
-    log.warn('Fehler:', err.message);
+    log.warn('Error:', err.message);
     res.json({ data: null }); // Fallback: Widget ausblenden, kein Error-Screen
   }
 });
@@ -145,8 +145,8 @@ router.get('/icon/:code', async (req, res) => {
     res.setHeader('Cache-Control', 'public, max-age=86400'); // 24 Stunden
     upstream.body.pipe(res);
   } catch (err) {
-    log.warn('Icon-Proxy Fehler:', err.message);
-    res.status(502).json({ error: 'Icon-Proxy fehlgeschlagen.', code: 502 });
+    log.warn('Icon proxy error:', err.message);
+    res.status(502).json({ error: 'Icon proxy failed.', code: 502 });
   }
 });
 

server/services/apple-calendar.js

@@ -80,7 +80,7 @@ function getCredentials() {
 function saveCredentials(url, username, password) {
   // Warnung wenn DB-Verschluesselung nicht aktiv - Credentials liegen dann im Klartext
   if (!process.env.DB_ENCRYPTION_KEY) {
-    log.warn('WARNUNG: DB_ENCRYPTION_KEY nicht gesetzt - CalDAV-Credentials werden unverschluesselt gespeichert.');
+    log.warn('WARNING: DB_ENCRYPTION_KEY is not set - CalDAV credentials will be stored unencrypted.');
   }
   cfgSet('apple_caldav_url',  url);
   cfgSet('apple_username',    username);
@@ -89,7 +89,7 @@ function saveCredentials(url, username, password) {
 
 function clearCredentials() {
   ['apple_caldav_url', 'apple_username', 'apple_app_password', 'apple_last_sync'].forEach(cfgDel);
-  log.info('Verbindung getrennt.');
+  log.info('Disconnected.');
 }
 
 // --------------------------------------------------------
@@ -110,7 +110,7 @@ function getStatus() {
  */
 async function testConnection() {
   const creds = getCredentials();
-  if (!creds) throw new Error('[Apple] Keine Credentials konfiguriert.');
+  if (!creds) throw new Error('[Apple] No credentials configured.');
 
   const { createDAVClient } = await import('tsdav');
   const client = await createDAVClient({
@@ -121,7 +121,7 @@ async function testConnection() {
   });
 
   const calendars = await client.fetchCalendars();
-  if (!calendars.length) throw new Error('[Apple] Verbunden, aber keine Kalender gefunden.');
+  if (!calendars.length) throw new Error('[Apple] Connected, but no calendars found.');
   return { ok: true, calendarCount: calendars.length };
 }
 
@@ -196,7 +196,7 @@ function unescapeICS(str) {
 async function sync() {
   const creds = getCredentials();
   if (!creds) {
-    throw new Error('[Apple] Keine Credentials konfiguriert (weder in DB noch in .env).');
+    throw new Error('[Apple] No credentials configured (neither in DB nor in .env).');
   }
 
   // tsdav ist eine optionale Abhängigkeit - dynamischer Import für graceful degradation
@@ -211,14 +211,14 @@ async function sync() {
 
   const calendars = await client.fetchCalendars();
   if (!calendars.length) {
-    log.warn('Keine Kalender gefunden.');
+    log.warn('No calendars found.');
     return;
   }
 
   // created_by: ersten existierenden User verwenden (nicht hardcoded ID 1)
   const owner = db.get().prepare('SELECT id FROM users ORDER BY id ASC LIMIT 1').get();
   if (!owner) {
-    log.warn('Kein User in der Datenbank - Sync übersprungen.');
+    log.warn('No user in database - sync skipped.');
     return;
   }
   const createdBy = owner.id;
@@ -233,7 +233,7 @@ async function sync() {
     try {
       calObjects = await client.fetchCalendarObjects({ calendar: cal });
     } catch (err) {
-      log.warn(`Kalender "${cal.displayName || '(unbenannt)'}" nicht abrufbar: ${err.message}`);
+      log.warn(`Calendar "${cal.displayName || '(unnamed)'}" is not accessible: ${err.message}`);
       continue;
     }
 
@@ -277,7 +277,7 @@ async function sync() {
             );
           }
         } catch (err) {
-          log.error(`Upsert-Fehler für UID ${ev.uid}:`, err.message);
+          log.error(`Upsert error for UID ${ev.uid}:`, err.message);
         }
       }
     }
@@ -308,12 +308,12 @@ async function sync() {
         UPDATE calendar_events SET external_calendar_id = ?, external_source = 'apple' WHERE id = ?
       `).run(uid, event.id);
     } catch (err) {
-      log.error(`Outbound-Fehler für Event ${event.id}:`, err.message);
+      log.error(`Outbound error for event ${event.id}:`, err.message);
     }
   }
 
   cfgSet('apple_last_sync', new Date().toISOString());
-  log.info(`Sync abgeschlossen - ${totalObjects} Objekte aus ${syncCalendars.length} Kalendern inbound, ${localEvents.length} lokal → iCloud.`);
+  log.info(`Sync completed - ${totalObjects} objects from ${syncCalendars.length} calendars inbound, ${localEvents.length} local → iCloud.`);
 }
 
 export { sync, getStatus, saveCredentials, clearCredentials, testConnection };

server/services/google-calendar.js

@@ -42,7 +42,7 @@ function createClient() {
   const redirectUri  = process.env.GOOGLE_REDIRECT_URI;
 
   if (!clientId || !clientSecret || !redirectUri) {
-    throw new Error('[Google] GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET und GOOGLE_REDIRECT_URI müssen gesetzt sein.');
+    throw new Error('[Google] GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET, and GOOGLE_REDIRECT_URI must be set.');
   }
 
   return new google.auth.OAuth2(clientId, clientSecret, redirectUri);
@@ -79,7 +79,7 @@ function loadAuthorizedClient() {
   const refreshToken = cfgGet('google_refresh_token');
 
   if (!accessToken || !refreshToken) {
-    throw new Error('[Google] Nicht konfiguriert - zuerst OAuth durchführen.');
+    throw new Error('[Google] Not configured - complete OAuth first.');
   }
 
   const client = createClient();
@@ -133,14 +133,14 @@ async function handleCallback(code) {
   const { tokens } = await client.getToken(code);
 
   if (!tokens.refresh_token) {
-    throw new Error('[Google] Kein Refresh Token erhalten. Bitte Zugriff in Google-Konto widerrufen und erneut verbinden.');
+    throw new Error('[Google] No refresh token received. Revoke access in your Google account and connect again.');
   }
 
   cfgSet('google_access_token',  tokens.access_token);
   cfgSet('google_refresh_token', tokens.refresh_token);
   if (tokens.expiry_date) cfgSet('google_token_expiry', String(tokens.expiry_date));
 
-  log.info('OAuth erfolgreich - Tokens gespeichert.');
+  log.info('OAuth successful - tokens saved.');
 }
 
 /**
@@ -160,7 +160,7 @@ function getStatus() {
 function disconnect() {
   ['google_access_token', 'google_refresh_token', 'google_token_expiry',
    'google_sync_token', 'google_last_sync'].forEach(cfgDel);
-  log.info('Verbindung getrennt.');
+  log.info('Disconnected.');
 }
 
 /**
@@ -181,7 +181,7 @@ async function sync() {
     const calName = meta.data.summary || 'Google Calendar';
     calRefId  = upsertExternalCalendar('google', 'primary', calName, calColor);
   } catch (err) {
-    log.warn('Kalender-Metadaten nicht abrufbar:', err.message);
+    log.warn('Calendar metadata is not accessible:', err.message);
   }
 
   // --------------------------------------------------------
@@ -214,7 +214,7 @@ async function sync() {
     } catch (err) {
       if (err.code === 410) {
         // syncToken abgelaufen → vollständiger Resync
-        log.warn('syncToken ungültig - vollständiger Resync.');
+        log.warn('syncToken invalid - full resync.');
         cfgDel('google_sync_token');
         syncToken = null;
         continue;
@@ -250,12 +250,12 @@ async function sync() {
         UPDATE calendar_events SET external_calendar_id = ?, external_source = 'google' WHERE id = ?
       `).run(created.data.id, event.id);
     } catch (err) {
-      log.error(`Outbound-Fehler für Event ${event.id}:`, err.message);
+      log.error(`Outbound error for event ${event.id}:`, err.message);
     }
   }
 
   cfgSet('google_last_sync', new Date().toISOString());
-  log.info(`Sync abgeschlossen - ${localEvents.length} lokal → Google, Inbound via syncToken.`);
+  log.info(`Sync completed - ${localEvents.length} local → Google, inbound via syncToken.`);
 }
 
 // --------------------------------------------------------
@@ -306,7 +306,7 @@ function upsertGoogleEvents(items, calRefId = null, calColor = GOOGLE_COLOR) {
     try {
       insertOrUpdate(item);
     } catch (err) {
-      log.error(`Upsert-Fehler für Event ${item.id}:`, err.message);
+      log.error(`Upsert error for event ${item.id}:`, err.message);
     }
   }
 }

server/services/ics-subscription.js

@@ -27,7 +27,7 @@ const syncingNow = new Set();
 
 function normalizeUrl(raw) {
   const url = new URL(raw.replace(/^webcal:\/\//i, 'https://'));
-  if (url.protocol !== 'https:') throw new Error('Nur https:// und webcal:// URLs sind erlaubt.');
+  if (url.protocol !== 'https:') throw new Error('Only https:// and webcal:// URLs are allowed.');
   return url.href;
 }
 
@@ -37,7 +37,7 @@ async function checkSSRF(urlStr) {
   const v6 = await dns.resolve6(hostname).catch(() => []);
   for (const addr of [...v4, ...v6]) {
     if (PRIVATE_RANGES.some((re) => re.test(addr))) {
-      throw new Error(`URL löst auf eine private IP-Adresse auf: ${addr}`);
+      throw new Error(`URL resolves to a private IP address: ${addr}`);
     }
   }
 }
@@ -61,12 +61,12 @@ async function fetchAndParse(urlRaw, etag, lastModified) {
   if (!res.ok) throw new Error(`HTTP ${res.status}`);
 
   const cl = parseInt(res.headers.get('content-length') || '0', 10);
-  if (cl > MAX_RESPONSE_BYTES) throw new Error('ICS-Datei überschreitet 10 MB Limit.');
+  if (cl > MAX_RESPONSE_BYTES) throw new Error('ICS file exceeds the 10 MB limit.');
 
   let body = '', received = 0;
   for await (const chunk of res.body) {
     received += chunk.length;
-    if (received > MAX_RESPONSE_BYTES) throw new Error('ICS-Datei überschreitet 10 MB Limit.');
+    if (received > MAX_RESPONSE_BYTES) throw new Error('ICS file exceeds the 10 MB limit.');
     body += chunk.toString();
   }
 
@@ -87,7 +87,7 @@ function syncWindow() {
 
 async function syncOne(sub) {
   if (syncingNow.has(sub.id)) {
-    log.info(`Abonnement ${sub.id} wird bereits synchronisiert - übersprungen.`);
+    log.info(`Subscription ${sub.id} is already syncing - skipped.`);
     return;
   }
   syncingNow.add(sub.id);
@@ -95,7 +95,7 @@ async function syncOne(sub) {
     let result;
     try { result = await fetchAndParse(sub.url, sub.etag, sub.last_modified); }
     catch (err) {
-      log.warn(`Abonnement ${sub.id} (${sub.name}): Fetch fehlgeschlagen - ${err.message}`);
+      log.warn(`Subscription ${sub.id} (${sub.name}): fetch failed - ${err.message}`);
       return;
     }
 
@@ -109,7 +109,7 @@ async function syncOne(sub) {
     const { windowStart, windowEnd } = syncWindow();
     const owner    = db.get().prepare('SELECT id FROM users ORDER BY id ASC LIMIT 1').get();
     const createdBy = sub.created_by ?? owner?.id;
-    if (!createdBy) { log.warn('Kein User gefunden.'); return; }
+    if (!createdBy) { log.warn('No user found.'); return; }
 
     const flatEvents = [];
     for (const ev of events) {
@@ -157,7 +157,7 @@ async function syncOne(sub) {
         .run(new Date().toISOString(), newEtag, newLastModified, sub.id);
     })();
 
-    log.info(`Abonnement ${sub.id} (${sub.name}): ${flatEvents.length} Events synchronisiert.`);
+    log.info(`Subscription ${sub.id} (${sub.name}): ${flatEvents.length} events synced.`);
   } finally { syncingNow.delete(sub.id); }
 }
 
@@ -167,7 +167,7 @@ async function sync(subscriptionId) {
     : db.get().prepare('SELECT * FROM ics_subscriptions').all();
   for (const sub of subs) {
     try { await syncOne(sub); }
-    catch (err) { log.error(`Sync Abonnement ${sub.id} fehlgeschlagen: ${err.message}`); }
+    catch (err) { log.error(`Subscription ${sub.id} sync failed: ${err.message}`); }
   }
 }
 
@@ -192,7 +192,7 @@ async function create(userId, { name, url, color, shared }) {
 function update(userId, subId, fields, isAdmin) {
   const sub = db.get().prepare('SELECT * FROM ics_subscriptions WHERE id = ?').get(subId);
   if (!sub) return null;
-  if (!isAdmin && sub.created_by !== userId) throw new Error('Nicht autorisiert.');
+  if (!isAdmin && sub.created_by !== userId) throw new Error('Not authorized.');
   const name   = fields.name   !== undefined ? fields.name   : sub.name;
   const color  = fields.color  !== undefined ? fields.color  : sub.color;
   const shared = fields.shared !== undefined ? (fields.shared ? 1 : 0) : sub.shared;
@@ -204,7 +204,7 @@ function update(userId, subId, fields, isAdmin) {
 function remove(userId, subId, isAdmin) {
   const sub = db.get().prepare('SELECT * FROM ics_subscriptions WHERE id = ?').get(subId);
   if (!sub) return false;
-  if (!isAdmin && sub.created_by !== userId) throw new Error('Nicht autorisiert.');
+  if (!isAdmin && sub.created_by !== userId) throw new Error('Not authorized.');
   db.get().prepare('DELETE FROM ics_subscriptions WHERE id = ?').run(subId);
   return true;
 }

setup.js

@@ -69,45 +69,45 @@ async function main() {
     .get();
 
   if (existingAdmin) {
-    console.log('ℹ  Es existiert bereits ein Admin-Account.\n');
-    const proceed = await prompt('Trotzdem einen weiteren Admin anlegen? (j/N): ');
-    if (proceed.toLowerCase() !== 'j') {
-      console.log('Setup abgebrochen.');
+    console.log('ℹ  An admin account already exists.\n');
+    const proceed = await prompt('Create another admin anyway? (y/N): ');
+    if (proceed.toLowerCase() !== 'y') {
+      console.log('Setup cancelled.');
       rl.close();
       process.exit(0);
     }
   }
 
-  console.log('Admin-Account anlegen:\n');
+  console.log('Create admin account:\n');
 
-  const username = (await prompt('Benutzername: ')).trim();
+  const username = (await prompt('Username: ')).trim();
   if (!username || username.length < 3) {
-    console.error('Fehler: Benutzername muss mindestens 3 Zeichen lang sein.');
+    console.error('Error: username must be at least 3 characters long.');
     process.exit(1);
   }
 
-  const displayName = (await prompt('Anzeigename (z.B. "Max Mustermann"): ')).trim();
+  const displayName = (await prompt('Display name (e.g. "Max Mustermann"): ')).trim();
   if (!displayName) {
-    console.error('Fehler: Anzeigename darf nicht leer sein.');
+    console.error('Error: display name must not be empty.');
     process.exit(1);
   }
 
-  const password = await promptPassword('Passwort: ');
+  const password = await promptPassword('Password: ');
   if (password.length < 8) {
-    console.error('Fehler: Passwort muss mindestens 8 Zeichen lang sein.');
+    console.error('Error: password must be at least 8 characters long.');
     process.exit(1);
   }
 
-  const passwordConfirm = await promptPassword('Passwort bestätigen: ');
+  const passwordConfirm = await promptPassword('Confirm password: ');
   if (password !== passwordConfirm) {
-    console.error('Fehler: Passwörter stimmen nicht überein.');
+    console.error('Error: passwords do not match.');
     process.exit(1);
   }
 
   const avatarColors = ['#007AFF', '#34C759', '#FF9500', '#FF3B30', '#AF52DE', '#FF2D55'];
   const avatarColor = avatarColors[Math.floor(Math.random() * avatarColors.length)];
 
-  console.log('\nAccount wird erstellt …');
+  console.log('\nCreating account …');
 
   const hash = await bcrypt.hash(password, 12);
 
@@ -122,23 +122,23 @@ async function main() {
     const port = process.env.PORT || 3000;
     const host = getLocalIP();
 
-    console.log(`\n✅ Admin-Account erfolgreich erstellt!`);
+    console.log(`\n✅ Admin account created successfully!`);
     console.log(`${'─'.repeat(40)}`);
-    console.log(`  Benutzername: ${username}`);
-    console.log(`  Anzeigename:  ${displayName}`);
-    console.log(`  Rolle:        Admin`);
+    console.log(`  Username:     ${username}`);
+    console.log(`  Display name: ${displayName}`);
+    console.log(`  Role:         Admin`);
     console.log(`${'─'.repeat(40)}`);
-    console.log(`\n🌐 Oikos ist erreichbar unter:\n`);
-    console.log(`   Lokal:     http://localhost:${port}`);
+    console.log(`\n🌐 Oikos is available at:\n`);
+    console.log(`   Local:     http://localhost:${port}`);
     if (host) {
-      console.log(`   Netzwerk:  http://${host}:${port}`);
+      console.log(`   Network:   http://${host}:${port}`);
     }
-    console.log(`\n   Melde dich mit deinem neuen Account an. Viel Spaß!\n`);
+    console.log(`\n   Sign in with your new account.\n`);
   } catch (err) {
     if (err.message?.includes('UNIQUE constraint')) {
-      console.error(`\nFehler: Benutzername "${username}" ist bereits vergeben.`);
+      console.error(`\nError: username "${username}" is already taken.`);
     } else {
-      console.error('\nFehler beim Erstellen:', err.message);
+      console.error('\nCreation error:', err.message);
     }
     process.exit(1);
   }
@@ -148,6 +148,6 @@ async function main() {
 }
 
 main().catch((err) => {
-  console.error('Unerwarteter Fehler:', err.message);
+  console.error('Unexpected error:', err.message);
   process.exit(1);
 });

test-api.js

@@ -43,7 +43,7 @@ function setup() {
 
 test('auth.login: 401 feuert kein auth:expired', async () => {
   setup();
-  _mockFetch = () => mockResponse(401, { error: 'Ungültige Anmeldedaten.', code: 401 });
+  _mockFetch = () => mockResponse(401, { error: 'Invalid credentials.', code: 401 });
 
   await assert.rejects(
     () => auth.login('user', 'wrong'),
@@ -60,7 +60,7 @@ test('auth.login: 401 feuert kein auth:expired', async () => {
 
 test('auth.login: 401 wirft ApiError mit status 401', async () => {
   setup();
-  _mockFetch = () => mockResponse(401, { error: 'Ungültige Anmeldedaten.', code: 401 });
+  _mockFetch = () => mockResponse(401, { error: 'Invalid credentials.', code: 401 });
 
   let thrownErr;
   try {
@@ -77,7 +77,7 @@ test('auth.login: 401 wirft ApiError mit status 401', async () => {
 
 test('api.get: 401 auf geschütztem Endpunkt feuert auth:expired', async () => {
   setup();
-  _mockFetch = () => mockResponse(401, { error: 'Nicht authentifiziert.', code: 401 });
+  _mockFetch = () => mockResponse(401, { error: 'Not authenticated.', code: 401 });
 
   await assert.rejects(() => api.get('/tasks'));
 
@@ -87,7 +87,7 @@ test('api.get: 401 auf geschütztem Endpunkt feuert auth:expired', async () => {
 
 test('api.post: 401 auf Logout-Endpunkt feuert auth:expired', async () => {
   setup();
-  _mockFetch = () => mockResponse(401, { error: 'Nicht authentifiziert.', code: 401 });
+  _mockFetch = () => mockResponse(401, { error: 'Not authenticated.', code: 401 });
 
   await assert.rejects(() => api.post('/auth/logout', {}));
 

test-notes-contacts-budget.js

@@ -178,30 +178,30 @@ console.log('\n[Budget-Test] Einnahmen, Ausgaben, Saldo, Aggregation, CSV-Vorber
 
 let bId1, bId2, bId3, bId4;
 
-test('Ausgabe eintragen (Lebensmittel)', () => {
-  const r = db.prepare(`INSERT INTO budget_entries (title, amount, category, date, created_by)
-    VALUES ('REWE', -85.40, 'Lebensmittel', '2026-03-10', ?)`).run(uid);
+test('Ausgabe eintragen (Supermarkt)', () => {
+  const r = db.prepare(`INSERT INTO budget_entries (title, amount, category, subcategory, date, created_by)
+    VALUES ('REWE', -85.40, 'food', 'groceries', '2026-03-10', ?)`).run(uid);
   bId1 = r.lastInsertRowid;
   assert(bId1 > 0);
 });
 
 test('Einnahme eintragen (Gehalt)', () => {
   const r = db.prepare(`INSERT INTO budget_entries (title, amount, category, date, created_by)
-    VALUES ('Gehalt März', 2800.00, 'Sonstiges', '2026-03-01', ?)`).run(uid);
+    VALUES ('Gehalt März', 2800.00, 'Sonstiges Einkommen', '2026-03-01', ?)`).run(uid);
   bId2 = r.lastInsertRowid;
   assert(bId2 > 0);
 });
 
-test('Ausgabe (Miete)', () => {
-  const r = db.prepare(`INSERT INTO budget_entries (title, amount, category, date, is_recurring, created_by)
-    VALUES ('Miete', -950.00, 'Miete', '2026-03-01', 1, ?)`).run(uid);
+test('Ausgabe (Aluguel / Prestação)', () => {
+  const r = db.prepare(`INSERT INTO budget_entries (title, amount, category, subcategory, date, is_recurring, created_by)
+    VALUES ('Miete', -950.00, 'housing', 'rent_mortgage', '2026-03-01', 1, ?)`).run(uid);
   bId3 = r.lastInsertRowid;
   assert(bId3 > 0);
 });
 
 test('Ausgabe im anderen Monat (April)', () => {
-  const r = db.prepare(`INSERT INTO budget_entries (title, amount, category, date, created_by)
-    VALUES ('Strom April', -55.00, 'Sonstiges', '2026-04-15', ?)`).run(uid);
+  const r = db.prepare(`INSERT INTO budget_entries (title, amount, category, subcategory, date, created_by)
+    VALUES ('Strom April', -55.00, 'housing', 'utilities', '2026-04-15', ?)`).run(uid);
   bId4 = r.lastInsertRowid;
   assert(bId4 > 0);
 });
@@ -258,12 +258,18 @@ test('Aggregation nach Kategorie', () => {
     GROUP BY category ORDER BY ABS(SUM(amount)) DESC
   `).all();
   assert(cats.length >= 2, `Mindestens 2 Kategorien, erhalten ${cats.length}`);
-  // Miete sollte die größte Ausgabe sein
-  const miete = cats.find((c) => c.category === 'Miete');
-  assert(miete, 'Miete in Kategorien vorhanden');
+  // Housing should be the largest expense category.
+  const miete = cats.find((c) => c.category === 'housing');
+  assert(miete, 'Housing in Kategorien vorhanden');
   assert(Math.abs(miete.expenses + 950.00) < 0.01, `Miete-Ausgaben: ${miete.expenses}`);
 });
 
+test('Unterkategorie gespeichert', () => {
+  const r = db.prepare('SELECT category, subcategory FROM budget_entries WHERE id = ?').get(bId1);
+  assert(r.category === 'food', `Kategorie: ${r.category}`);
+  assert(r.subcategory === 'groceries', `Unterkategorie: ${r.subcategory}`);
+});
+
 test('Wiederkehrend-Flag korrekt', () => {
   const r = db.prepare('SELECT is_recurring FROM budget_entries WHERE id = ?').get(bId3);
   assert(r.is_recurring === 1, 'Miete ist wiederkehrend');