feat(ux): first-time onboarding overlay for new users

Shows a 3-screen modal overlay on first dashboard visit explaining key
features; dismissed state is persisted to localStorage so it never
reappears.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

public/locales/ar.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "الإشعارات نشطة",
     "notificationDenied": "الإشعارات محظورة",
     "notificationHint": "احصل على إشعارات حتى عندما يكون التطبيق مفتوحًا."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/de.json

@@ -780,5 +780,16 @@
     "duplicate": "Duplizieren",
     "duplicated": "Rezept dupliziert.",
     "copySuffix": "Kopie"
+  },
+  "onboarding": {
+    "step1Title": "Willkommen bei Oikos",
+    "step1Body": "Dein persönlicher Familienplaner. Aufgaben, Kalender, Einkauf und mehr – alles an einem Ort.",
+    "step2Title": "Alles im Blick",
+    "step2Body": "Über die Navigation unten erreichst du alle Module. Mit dem +-Button erstellst du schnell neue Einträge.",
+    "step3Title": "Bereit loszulegen",
+    "step3Body": "Das Dashboard zeigt dir die wichtigsten Infos auf einen Blick. Du kannst es unter \"Anpassen\" nach deinen Wünschen einrichten.",
+    "next": "Weiter",
+    "done": "Loslegen",
+    "skip": "Überspringen"
   }
 }

public/locales/el.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "Ειδοποιήσεις ενεργές",
     "notificationDenied": "Ειδοποιήσεις αποκλεισμένες",
     "notificationHint": "Λάβετε ειδοποιήσεις ακόμα και όταν η εφαρμογή είναι ανοιχτή."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/en.json

@@ -780,5 +780,16 @@
     "open": "Open search",
     "placeholder": "Search…",
     "noResults": "No results found."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/es.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "Notificaciones activas",
     "notificationDenied": "Notificaciones bloqueadas",
     "notificationHint": "Recibe notificaciones incluso cuando la aplicación está abierta."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/fr.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "Notifications actives",
     "notificationDenied": "Notifications bloquées",
     "notificationHint": "Recevez des notifications même lorsque l'application est ouverte."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/hi.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "सूचनाएं सक्रिय",
     "notificationDenied": "सूचनाएं अवरुद्ध",
     "notificationHint": "ऐप खुली होने पर भी सूचनाएं प्राप्त करें।"
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/it.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "Notifiche attive",
     "notificationDenied": "Notifiche bloccate",
     "notificationHint": "Ricevi notifiche anche quando l'app è aperta."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/ja.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "通知が有効",
     "notificationDenied": "通知がブロックされています",
     "notificationHint": "アプリが開いているときでも通知を受け取ります。"
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/pt.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "Notificações ativas",
     "notificationDenied": "Notificações bloqueadas",
     "notificationHint": "Receba notificações mesmo quando a aplicação está aberta."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/ru.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "Уведомления активны",
     "notificationDenied": "Уведомления заблокированы",
     "notificationHint": "Получайте уведомления, даже когда приложение открыто."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/sv.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "Notiser aktiva",
     "notificationDenied": "Notiser blockerade",
     "notificationHint": "Få notiser även när appen är öppen."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/tr.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "Bildirimler etkin",
     "notificationDenied": "Bildirimler engellendi",
     "notificationHint": "Uygulama açıkken bile bildirim alın."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/uk.json

@@ -780,5 +780,16 @@
     "open": "Відкрити пошук",
     "placeholder": "Пошук…",
     "noResults": "Результатів не знайдено."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }

public/locales/zh.json

@@ -780,5 +780,16 @@
     "notificationEnabled": "通知已启用",
     "notificationDenied": "通知已被阻止",
     "notificationHint": "即使应用程序打开时也能收到通知。"
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }