feat: complete Phase 1 foundation scaffold

- Monorepo: Turborepo + pnpm workspaces with 7 apps/packages
- Backend: NestJS scaffold with 9 modules (auth, tenant, curriculum, simulation, portfolio, ai-coach, analytics, classroom, gamification)
- Frontend: React 18 + Vite + TailwindCSS + shadcn/ui with 10 pages, 14 UI primitives, 3 Zustand stores
- Database: Prisma schema with 19 models, 13 enums, seed script, multi-tenant ready
- Docker: Dev, production, and Portainer Compose files with Traefik reverse proxy
- Configuration: .env.example (47 vars), Zod validation, frontend-safe env exposure
- i18n: English + Greek locale files (10 files), ICU MessageFormat, react-i18next
- Shared packages: @investplay/types, @investplay/ui, @investplay/i18n, @investplay/utils
- CI/CD: GitHub Actions (lint, typecheck, test, build, deploy, PR checks)
- Documentation: CONTEXT.md, ARCHITECTURE.md (10 Mermaid diagrams), API.md, LOCALIZATION.md, DEVELOPMENT-ROADMAP.md
- Infrastructure: Dockerfiles (dev + prod), nginx configs, backup/healthcheck scripts
- Security: JWT auth guards, role-based access, rate limiting, Helmet, CORS, PII sanitization

packages/i18n/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "@investplay/i18n",
+  "version": "0.1.0",
+  "private": true,
+  "description": "InvestPlay internationalization package",
+  "main": "./src/index.ts",
+  "types": "./src/index.ts",
+  "scripts": {
+    "lint": "eslint \"src/**/*.ts\" --fix",
+    "typecheck": "tsc --noEmit",
+    "clean": "rimraf .turbo"
+  },
+  "dependencies": {
+    "i18next": "^24.2.0",
+    "react-i18next": "^15.4.0",
+    "intl-messageformat": "^10.7.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.8.0",
+    "eslint": "^8.57.0",
+    "rimraf": "^6.0.0"
+  }
+}

packages/i18n/src/index.ts

@@ -0,0 +1,53 @@
+import i18next, { type InitOptions } from "i18next";
+import { initReactI18next } from "react-i18next";
+import enCommon from "./locales/en/common.json" with { type: "json" };
+import enFinance from "./locales/en/finance.json" with { type: "json" };
+import enGamification from "./locales/en/gamification.json" with { type: "json" };
+import enClassroom from "./locales/en/classroom.json" with { type: "json" };
+import enAiCoach from "./locales/en/ai-coach.json" with { type: "json" };
+import elCommon from "./locales/el/common.json" with { type: "json" };
+import elFinance from "./locales/el/finance.json" with { type: "json" };
+import elGamification from "./locales/el/gamification.json" with { type: "json" };
+import elClassroom from "./locales/el/classroom.json" with { type: "json" };
+import elAiCoach from "./locales/el/ai-coach.json" with { type: "json" };
+
+const resources = {
+  en: {
+    common: enCommon,
+    finance: enFinance,
+    gamification: enGamification,
+    classroom: enClassroom,
+    aiCoach: enAiCoach,
+  },
+  el: {
+    common: elCommon,
+    finance: elFinance,
+    gamification: elGamification,
+    classroom: elClassroom,
+    aiCoach: elAiCoach,
+  },
+} as const;
+
+export type LocaleResource = typeof resources;
+
+const defaultOptions: InitOptions = {
+  resources,
+  fallbackLng: "en",
+  defaultNS: "common",
+  ns: ["common", "finance", "gamification", "classroom", "aiCoach"],
+  interpolation: {
+    escapeValue: false,
+  },
+  returnNull: false,
+  returnEmptyString: false,
+};
+
+export function initI18n(options?: Partial<InitOptions>): typeof i18next {
+  const instance = i18next.createInstance();
+  instance.use(initReactI18next);
+  instance.init({ ...defaultOptions, ...options });
+  return instance;
+}
+
+export { useTranslation } from "react-i18next";
+export type { LocaleResource };

packages/i18n/src/locales/el/ai-coach.json

@@ -0,0 +1,34 @@
+{
+  "chat": {
+    "placeholder": "Ρωτήστε με οτιδήποτε για τα οικονομικά...",
+    "greeting": "Γεια σας! Είμαι ο AI Coach σας. Μπορώ να σας βοηθήσω να κατανοήσετε οικονομικές έννοιες, να αναλύσετε το χαρτοφυλάκιό σας και να σας καθοδηγήσω σε προσομοιώσεις. Τι θα θέλατε να μάθετε σήμερα;",
+    "quotaExhausted": "Φτάσατε στο ημερήσιο όριο μηνυμάτων για τον AI Coach. Αναβαθμίστε το πρόγραμμά σας ή δοκιμάστε ξανά αύριο.",
+    "thinking": "Σκέφτομαι...",
+    "errorFallback": "Αντιμετωπίζω δυσκολία στην επεξεργασία του αιτήματός σας. Παρακαλώ δοκιμάστε ξανά.",
+    "send": "Αποστολή",
+    "clear": "Εκκαθάριση συνομιλίας",
+    "close": "Κλείσιμο συνομιλίας",
+    "minimize": "Ελαχιστοποίηση"
+  },
+  "context": {
+    "lesson": "Αυτή τη στιγμή βρίσκεστε στο μάθημα \"{{lesson}}\". Θα προσαρμόσω τις απαντήσεις μου για να σας βοηθήσω με αυτό το θέμα.",
+    "simulation": "Βλέπω ότι εκτελείτε μια προσομοίωση {{simulation}}. Επιτρέψτε μου να σας βοηθήσω να λάβετε τεκμηριωμένες αποφάσεις.",
+    "portfolio": "Ορίστε μια γρήγορη ανάλυση της τρέχουσας κατανομής του χαρτοφυλακίου σας."
+  },
+  "limits": {
+    "dailyMessages": "Ημερήσια μηνύματα: {{used}} / {{limit}}",
+    "tokenUsage": "Tokens που χρησιμοποιήθηκαν: {{used}} / {{limit}}",
+    "upgrade": "Χρειάζεστε περισσότερα; Επικοινωνήστε με τον διαχειριστή σας."
+  },
+  "topics": {
+    "basics": "Οικονομικά Βασικά",
+    "investing": "Επενδύσεις",
+    "budgeting": "Προϋπολογισμός",
+    "debt": "Διαχείριση Χρέους",
+    "retirement": "Συνταξιοδοτικός Προγραμματισμός",
+    "taxes": "Φόροι",
+    "insurance": "Ασφάλειες",
+    "realEstate": "Ακίνητα",
+    "crypto": "Κρυπτονομίσματα"
+  }
+}

packages/i18n/src/locales/el/classroom.json

@@ -0,0 +1,66 @@
+{
+  "dashboard": {
+    "title": "Πίνακας Ελέγχου Τάξης",
+    "overview": "Επισκόπηση",
+    "totalStudents": "Σύνολο Μαθητών",
+    "averageScore": "Μέση Βαθμολογία",
+    "completionRate": "Ποσοστό Ολοκλήρωσης",
+    "reports": "Αναφορές",
+    "recentActivity": "Πρόσφατη Δραστηριότητα",
+    "noActivity": "Καμία πρόσφατη δραστηριότητα"
+  },
+  "assignments": {
+    "title": "Εργασίες",
+    "create": "Δημιουργία Εργασίας",
+    "edit": "Επεξεργασία Εργασίας",
+    "delete": "Διαγραφή Εργασίας",
+    "dueDate": "Ημερομηνία Παράδοσης",
+    "requiredScore": "Απαιτούμενη Βαθμολογία",
+    "maxAttempts": "Μέγιστες Προσπάθειες",
+    "submissions": "Υποβολές",
+    "noAssignments": "Δεν έχουν δημιουργηθεί εργασίες ακόμα",
+    "status": {
+      "open": "Ανοικτή",
+      "closed": "Κλειστή",
+      "draft": "Πρόχειρο"
+    }
+  },
+  "cohorts": {
+    "title": "Τμήματα",
+    "create": "Δημιουργία Τμήματος",
+    "join": "Εγγραφή σε Τάξη",
+    "inviteCode": "Κωδικός Πρόσκλησης",
+    "students": "Μαθητές",
+    "noCohorts": "Δεν υπάρχουν τμήματα ακόμα",
+    "emptyClass": "Δεν υπάρχουν μαθητές σε αυτή την τάξη ακόμα"
+  },
+  "reports": {
+    "title": "Αναφορές",
+    "generate": "Δημιουργία Αναφοράς",
+    "export": "Εξαγωγή",
+    "compositeScore": "Σύνθετη Βαθμολογία",
+    "roi": "Απόδοση Επένδυσης",
+    "riskManagement": "Διαχείριση Κινδύνου",
+    "esgAlignment": "ESG Συμμόρφωση",
+    "quizScore": "Βαθμολογία Κουίζ",
+    "lessonCompletion": "Ολοκλήρωση Μαθημάτων",
+    "studentProgress": "Πρόοδος Μαθητή",
+    "classAverage": "Μέσος Όρος Τάξης"
+  },
+  "teacher": {
+    "actions": {
+      "createAssignment": "Νέα Εργασία",
+      "viewSubmissions": "Προβολή Υποβολών",
+      "gradeAssignment": "Βαθμολόγηση Εργασίας",
+      "manageStudents": "Διαχείριση Μαθητών",
+      "sendAnnouncement": "Αποστολή Ανακοίνωσης",
+      "viewReports": "Προβολή Αναφορών"
+    },
+    "announcement": {
+      "title": "Ανακοίνωση",
+      "placeholder": "Γράψτε μια ανακοίνωση για την τάξη σας...",
+      "send": "Αποστολή Ανακοίνωσης",
+      "sent": "Η ανακοίνωση στάλθηκε με επιτυχία"
+    }
+  }
+}

packages/i18n/src/locales/el/common.json

@@ -0,0 +1,103 @@
+{
+  "nav": {
+    "dashboard": "Πίνακας Ελέγχου",
+    "learn": "Μάθηση",
+    "play": "Παιχνίδι",
+    "practice": "Εξάσκηση",
+    "teach": "Διδασκαλία",
+    "classroom": "Τάξη",
+    "leaderboard": "Βαθμολογία",
+    "profile": "Προφίλ",
+    "settings": "Ρυθμίσεις",
+    "admin": "Διαχείριση"
+  },
+  "actions": {
+    "next": "Επόμενο",
+    "back": "Πίσω",
+    "submit": "Υποβολή",
+    "cancel": "Ακύρωση",
+    "save": "Αποθήκευση",
+    "delete": "Διαγραφή",
+    "edit": "Επεξεργασία",
+    "view": "Προβολή",
+    "confirm": "Επιβεβαίωση",
+    "retry": "Δοκιμή ξανά",
+    "close": "Κλείσιμο",
+    "continue": "Συνέχεια",
+    "start": "Έναρξη",
+    "finish": "Ολοκλήρωση",
+    "skip": "Παράλειψη",
+    "search": "Αναζήτηση",
+    "filter": "Φίλτρο",
+    "sort": "Ταξινόμηση",
+    "refresh": "Ανανέωση",
+    "download": "Λήψη",
+    "upload": "Μεταφόρτωση",
+    "share": "Κοινοποίηση",
+    "copy": "Αντιγραφή",
+    "undo": "Αναίρεση",
+    "redo": "Επανάληψη"
+  },
+  "errors": {
+    "generic": "Κάτι πήγε στραβά. Παρακαλώ δοκιμάστε ξανά.",
+    "network": "Σφάλμα δικτύου. Ελέγξτε τη σύνδεσή σας.",
+    "unauthorized": "Πρέπει να συνδεθείτε για να δείτε αυτή τη σελίδα.",
+    "forbidden": "Δεν έχετε άδεια να εκτελέσετε αυτή την ενέργεια.",
+    "notFound": "Η σελίδα που ζητήσατε δεν υπάρχει.",
+    "validation": "Ελέγξτε τα στοιχεία σας και δοκιμάστε ξανά.",
+    "timeout": "Το αίτημα έληξε. Παρακαλώ δοκιμάστε ξανά.",
+    "serverError": "Σφάλμα διακομιστή. Η ομάδα μας έχει ειδοποιηθεί.",
+    "rateLimited": "Πάρα πολλά αιτήματα. Παρακαλώ περιμένετε λίγο.",
+    "sessionExpired": "Η συνεδρία σας έληξε. Παρακαλώ συνδεθείτε ξανά."
+  },
+  "auth": {
+    "login": "Σύνδεση",
+    "register": "Δημιουργία Λογαριασμού",
+    "logout": "Αποσύνδεση",
+    "forgotPassword": "Ξεχάσατε τον Κωδικό;",
+    "resetPassword": "Επαναφορά Κωδικού",
+    "changePassword": "Αλλαγή Κωδικού",
+    "email": "Διεύθυνση email",
+    "password": "Κωδικός",
+    "confirmPassword": "Επιβεβαίωση κωδικού",
+    "rememberMe": "Να με θυμάσαι",
+    "noAccount": "Δεν έχετε λογαριασμό;",
+    "hasAccount": "Έχετε ήδη λογαριασμό;",
+    "signUp": "Εγγραφή",
+    "signIn": "Σύνδεση",
+    "welcomeBack": "Καλώς ήρθατε πίσω",
+    "createAccount": "Δημιουργήστε τον λογαριασμό σας",
+    "termsAgree": "Συμφωνώ με τους Όρους Χρήσης και την Πολιτική Απορρήτου"
+  },
+  "empty": {
+    "noData": "Δεν υπάρχουν διαθέσιμα δεδομένα",
+    "noResults": "Δεν βρέθηκαν αποτελέσματα",
+    "comingSoon": "Σύντομα διαθέσιμο",
+    "noLessons": "Δεν υπάρχουν μαθήματα ακόμα",
+    "noSimulations": "Δεν υπάρχουν διαθέσιμες προσομοιώσεις",
+    "noAssignments": "Δεν υπάρχουν εργασίες ακόμα",
+    "noStudents": "Δεν είναι εγγεγραμμένοι μαθητές",
+    "noMessages": "Δεν υπάρχουν μηνύματα ακόμα"
+  },
+  "time": {
+    "today": "Σήμερα",
+    "yesterday": "Χθες",
+    "thisWeek": "Αυτή την εβδομάδα",
+    "thisMonth": "Αυτό τον μήνα",
+    "minutes": "{{count}} λεπτό",
+    "minutes_plural": "{{count}} λεπτά",
+    "hours": "{{count}} ώρα",
+    "hours_plural": "{{count}} ώρες",
+    "days": "{{count}} ημέρα",
+    "days_plural": "{{count}} ημέρες"
+  },
+  "theme": {
+    "light": "Φωτεινό",
+    "dark": "Σκοτεινό",
+    "system": "Συστήματος"
+  },
+  "language": {
+    "en": "English",
+    "el": "Ελληνικά"
+  }
+}

packages/i18n/src/locales/el/finance.json

@@ -0,0 +1,105 @@
+{
+  "assetClasses": {
+    "stocks": "Μετοχές",
+    "bonds": "Ομόλογα",
+    "etfs": "ETF",
+    "mutualFunds": "Αμοιβαία Κεφάλαια",
+    "crypto": "Κρυπτονομίσματα",
+    "realEstate": "Ακίνητα",
+    "commodities": "Εμπορεύματα",
+    "cash": "Μετρητά",
+    "derivatives": "Παράγωγα",
+    "forex": "Συνάλλαγμα"
+  },
+  "investmentTypes": {
+    "growth": "Επένδυση Ανάπτυξης",
+    "value": "Επένδυση Αξίας",
+    "dividend": "Επένδυση Μερισμάτων",
+    "index": "Επένδυση Δείκτη",
+    "esg": "ESG Επένδυση",
+    "dayTrading": "Ημερήσια Διαπραγμάτευση",
+    "swing": "Swing Trading",
+    "dca": "Μέσος Όρος Κόστους"
+  },
+  "banking": {
+    "savingsAccount": "Λογαριασμός Ταμιευτηρίου",
+    "checkingAccount": "Τρεχούμενος Λογαριασμός",
+    "fixedDeposit": "Προθεσμιακή Κατάθεση",
+    "interestRate": "Επιτόκιο",
+    "apr": "Επιτόκιο (APR)",
+    "apy": "Ετήσια Απόδοση (APY)",
+    "compoundInterest": "Ανατοκισμός",
+    "principal": "Κεφάλαιο",
+    "maturity": "Λήξη"
+  },
+  "budgeting": {
+    "income": "Εισόδημα",
+    "expenses": "Έξοδα",
+    "savings": "Αποταμίευση",
+    "investments": "Επενδύσεις",
+    "needs": "Ανάγκες",
+    "wants": "Επιθυμίες",
+    "emergencyFund": "Ταμείο Έκτακτης Ανάγκης",
+    "trackExpenses": "Παρακολούθηση Εξόδων",
+    "setBudget": "Ορισμός Προϋπολογισμού",
+    "reviewSpending": "Ανασκόπηση Δαπανών"
+  },
+  "debt": {
+    "creditCard": "Πιστωτική Κάρτα",
+    "studentLoan": "Φοιτητικό Δάνειο",
+    "mortgage": "Στεγαστικό Δάνειο",
+    "personalLoan": "Προσωπικό Δάνειο",
+    "interestRate": "Επιτόκιο",
+    "minimumPayment": "Ελάχιστη Πληρωμή",
+    "balance": "Υπόλοιπο",
+    "debtFree": "Χωρίς Χρέη",
+    "consolidation": "Συγχώνευση Χρεών",
+    "snowball": "Μέθοδος Χιονόμπαλας",
+    "avalanche": "Μέθοδος Χιονοστιβάδας"
+  },
+  "inflation": {
+    "inflationRate": "Ποσοστό Πληθωρισμού",
+    "purchasingPower": "Αγοραστική Δύναμη",
+    "cpi": "Δείκτης Τιμών Καταναλωτή",
+    "realReturn": "Πραγματική Απόδοση",
+    "nominalReturn": "Ονομαστική Απόδοση",
+    "hedge": "Αντιστάθμιση Πληθωρισμού"
+  },
+  "risk": {
+    "low": "Χαμηλού Κινδύνου",
+    "medium": "Μέτριου Κινδύνου",
+    "high": "Υψηλού Κινδύνου",
+    "volatility": "Μεταβλητότητα",
+    "diversification": "Διαφοροποίηση",
+    "correlation": "Συσχέτιση",
+    "beta": "Beta",
+    "alpha": "Alpha",
+    "sharpeRatio": "Δείκτης Sharpe",
+    "maxDrawdown": "Μέγιστη Υποχώρηση",
+    "riskTolerance": "Ανοχή Κινδύνου"
+  },
+  "portfolio": {
+    "allocation": "Κατανομή Περιουσιακών Στοιχείων",
+    "rebalance": "Εξισορρόπηση",
+    "performance": "Απόδοση",
+    "returns": "Αποδόσεις",
+    "gain": "Κέρδος",
+    "loss": "Ζημία",
+    "totalValue": "Συνολική Αξία",
+    "profitLoss": "Κέρδη / Ζημίες",
+    "roe": "Απόδοση Επένδυσης",
+    "annualizedReturn": "Ετήσια Απόδοση"
+  },
+  "market": {
+    "bullMarket": "Αγορά Ανοδική (Bull Market)",
+    "bearMarket": "Πτωτική Αγορά (Bear Market)",
+    "correction": "Διόρθωση",
+    "crash": "Κατάρρευση Αγοράς",
+    "recession": "Ύφεση",
+    "recovery": "Ανάκαμψη",
+    "volatility": "Μεταβλητότητα Αγοράς",
+    "liquidity": "Ρευστότητα",
+    "spread": "Διαφορά Αγοράς-Πώλησης",
+    "volume": "Όγκος Συναλλαγών"
+  }
+}

packages/i18n/src/locales/el/gamification.json

@@ -0,0 +1,62 @@
+{
+  "xp": {
+    "label": "ΠΠ",
+    "earned": "Κερδίσατε {{count}} ΠΠ",
+    "needed": "{{count}} ΠΠ για το επόμενο επίπεδο",
+    "reason": {
+      "lessonCompleted": "Ολοκλήρωση μαθήματος",
+      "quizPassed": "Επιτυχία κουίζ",
+      "streakMaintained": "Διατήρηση σερί",
+      "challengeCompleted": "Ολοκλήρωση πρόκλησης",
+      "simulationCompleted": "Ολοκλήρωση προσομοίωσης",
+      "diversification": "Διαφοροποίηση χαρτοφυλακίου",
+      "riskManagement": "Σωστή διαχείριση κινδύνου",
+      "hypeAvoided": "Αποφυγή διαφημιστικής εκστρατείας",
+      "debtPaidOff": "Εξόφληση χρέους"
+    }
+  },
+  "level": {
+    "label": "Επίπεδο",
+    "current": "Επίπεδο {{level}}",
+    "progress": "Επίπεδο {{current}} — {{progress}}% για το Επίπεδο {{next}}"
+  },
+  "badges": {
+    "title": "Σήματα",
+    "unlocked": "Ξεκλείδωμα Σήματος!",
+    "locked": "Κλειδωμένο",
+    "progress": "{{count}} από {{total}} σήματα",
+    "categories": {
+      "milestone": "Ορόσημα",
+      "skill": "Δεξιότητες",
+      "behavior": "Συμπεριφορές",
+      "special": "Ειδικά"
+    }
+  },
+  "achievements": {
+    "title": "Επιτεύγματα",
+    "recent": "Πρόσφατα Επιτεύγματα",
+    "all": "Όλα τα Επιτεύγματα",
+    "empty": "Ολοκληρώστε μαθήματα για να κερδίσετε επιτεύγματα"
+  },
+  "streaks": {
+    "label": "Σερί",
+    "current": "Σερί {{count}} ημερών",
+    "longest": "Μεγαλύτερο: {{count}} ημέρες",
+    "days": "{{count}} ημέρα",
+    "days_plural": "{{count}} ημέρες",
+    "maintain": "Ολοκληρώστε ένα μάθημα σήμερα για να διατηρήσετε το σερί σας!",
+    "lost": "Το σερί χάθηκε. Ξεκινήστε ξανά αύριο!"
+  },
+  "leaderboard": {
+    "title": "Βαθμολογία",
+    "rank": "Θέση",
+    "player": "Παίκτης",
+    "xp": "ΠΠ",
+    "level": "Επίπεδο",
+    "badges": "Σήματα",
+    "yourRank": "Η Θέση σας",
+    "empty": "Δεν υπάρχουν ακόμα κατατάξεις. Ξεκινήστε να μαθαίνετε!",
+    "classroom": "Βαθμολογία Τάξης",
+    "global": "Γενική Βαθμολογία"
+  }
+}

packages/i18n/src/locales/en/ai-coach.json

@@ -0,0 +1,34 @@
+{
+  "chat": {
+    "placeholder": "Ask me anything about finance...",
+    "greeting": "Hi! I'm your AI Coach. I can help you understand financial concepts, analyze your portfolio, and guide you through simulations. What would you like to learn today?",
+    "quotaExhausted": "You've reached your daily limit for AI Coach messages. Upgrade your plan or try again tomorrow.",
+    "thinking": "Thinking...",
+    "errorFallback": "I'm having trouble processing your request. Please try again.",
+    "send": "Send",
+    "clear": "Clear chat",
+    "close": "Close chat",
+    "minimize": "Minimize"
+  },
+  "context": {
+    "lesson": "You are currently on lesson \"{{lesson}}\". I'll tailor my responses to help you with this topic.",
+    "simulation": "I can see you're running a {{simulation}} simulation. Let me help you make informed decisions.",
+    "portfolio": "Here's a quick analysis of your current portfolio allocation."
+  },
+  "limits": {
+    "dailyMessages": "Daily messages: {{used}} / {{limit}}",
+    "tokenUsage": "Tokens used: {{used}} / {{limit}}",
+    "upgrade": "Need more? Contact your administrator."
+  },
+  "topics": {
+    "basics": "Financial Basics",
+    "investing": "Investing",
+    "budgeting": "Budgeting",
+    "debt": "Debt Management",
+    "retirement": "Retirement Planning",
+    "taxes": "Taxes",
+    "insurance": "Insurance",
+    "realEstate": "Real Estate",
+    "crypto": "Cryptocurrency"
+  }
+}

packages/i18n/src/locales/en/classroom.json

@@ -0,0 +1,66 @@
+{
+  "dashboard": {
+    "title": "Classroom Dashboard",
+    "overview": "Overview",
+    "totalStudents": "Total Students",
+    "averageScore": "Average Score",
+    "completionRate": "Completion Rate",
+    "reports": "Reports",
+    "recentActivity": "Recent Activity",
+    "noActivity": "No recent activity"
+  },
+  "assignments": {
+    "title": "Assignments",
+    "create": "Create Assignment",
+    "edit": "Edit Assignment",
+    "delete": "Delete Assignment",
+    "dueDate": "Due Date",
+    "requiredScore": "Required Score",
+    "maxAttempts": "Max Attempts",
+    "submissions": "Submissions",
+    "noAssignments": "No assignments created yet",
+    "status": {
+      "open": "Open",
+      "closed": "Closed",
+      "draft": "Draft"
+    }
+  },
+  "cohorts": {
+    "title": "Cohorts",
+    "create": "Create Cohort",
+    "join": "Join Class",
+    "inviteCode": "Invite Code",
+    "students": "Students",
+    "noCohorts": "No cohorts yet",
+    "emptyClass": "No students in this class yet"
+  },
+  "reports": {
+    "title": "Reports",
+    "generate": "Generate Report",
+    "export": "Export",
+    "compositeScore": "Composite Score",
+    "roi": "ROI",
+    "riskManagement": "Risk Management",
+    "esgAlignment": "ESG Alignment",
+    "quizScore": "Quiz Score",
+    "lessonCompletion": "Lesson Completion",
+    "studentProgress": "Student Progress",
+    "classAverage": "Class Average"
+  },
+  "teacher": {
+    "actions": {
+      "createAssignment": "New Assignment",
+      "viewSubmissions": "View Submissions",
+      "gradeAssignment": "Grade Assignment",
+      "manageStudents": "Manage Students",
+      "sendAnnouncement": "Send Announcement",
+      "viewReports": "View Reports"
+    },
+    "announcement": {
+      "title": "Announcement",
+      "placeholder": "Write an announcement to your class...",
+      "send": "Send Announcement",
+      "sent": "Announcement sent successfully"
+    }
+  }
+}

packages/i18n/src/locales/en/common.json

@@ -0,0 +1,103 @@
+{
+  "nav": {
+    "dashboard": "Dashboard",
+    "learn": "Learn",
+    "play": "Play",
+    "practice": "Practice",
+    "teach": "Teach",
+    "classroom": "Classroom",
+    "leaderboard": "Leaderboard",
+    "profile": "Profile",
+    "settings": "Settings",
+    "admin": "Admin"
+  },
+  "actions": {
+    "next": "Next",
+    "back": "Back",
+    "submit": "Submit",
+    "cancel": "Cancel",
+    "save": "Save",
+    "delete": "Delete",
+    "edit": "Edit",
+    "view": "View",
+    "confirm": "Confirm",
+    "retry": "Retry",
+    "close": "Close",
+    "continue": "Continue",
+    "start": "Start",
+    "finish": "Finish",
+    "skip": "Skip",
+    "search": "Search",
+    "filter": "Filter",
+    "sort": "Sort",
+    "refresh": "Refresh",
+    "download": "Download",
+    "upload": "Upload",
+    "share": "Share",
+    "copy": "Copy",
+    "undo": "Undo",
+    "redo": "Redo"
+  },
+  "errors": {
+    "generic": "Something went wrong. Please try again.",
+    "network": "Network error. Please check your connection.",
+    "unauthorized": "You need to sign in to access this page.",
+    "forbidden": "You do not have permission to perform this action.",
+    "notFound": "The page you are looking for does not exist.",
+    "validation": "Please check your input and try again.",
+    "timeout": "The request timed out. Please try again.",
+    "serverError": "Server error. Our team has been notified.",
+    "rateLimited": "Too many requests. Please wait a moment.",
+    "sessionExpired": "Your session has expired. Please sign in again."
+  },
+  "auth": {
+    "login": "Sign In",
+    "register": "Create Account",
+    "logout": "Sign Out",
+    "forgotPassword": "Forgot Password?",
+    "resetPassword": "Reset Password",
+    "changePassword": "Change Password",
+    "email": "Email address",
+    "password": "Password",
+    "confirmPassword": "Confirm password",
+    "rememberMe": "Remember me",
+    "noAccount": "Don't have an account?",
+    "hasAccount": "Already have an account?",
+    "signUp": "Sign Up",
+    "signIn": "Sign In",
+    "welcomeBack": "Welcome back",
+    "createAccount": "Create your account",
+    "termsAgree": "I agree to the Terms of Service and Privacy Policy"
+  },
+  "empty": {
+    "noData": "No data available",
+    "noResults": "No results found",
+    "comingSoon": "Coming soon",
+    "noLessons": "No lessons available yet",
+    "noSimulations": "No simulations available",
+    "noAssignments": "No assignments yet",
+    "noStudents": "No students enrolled",
+    "noMessages": "No messages yet"
+  },
+  "time": {
+    "today": "Today",
+    "yesterday": "Yesterday",
+    "thisWeek": "This week",
+    "thisMonth": "This month",
+    "minutes": "{{count}} min",
+    "minutes_plural": "{{count}} mins",
+    "hours": "{{count}} hour",
+    "hours_plural": "{{count}} hours",
+    "days": "{{count}} day",
+    "days_plural": "{{count}} days"
+  },
+  "theme": {
+    "light": "Light",
+    "dark": "Dark",
+    "system": "System"
+  },
+  "language": {
+    "en": "English",
+    "el": "Ελληνικά"
+  }
+}

packages/i18n/src/locales/en/finance.json

@@ -0,0 +1,105 @@
+{
+  "assetClasses": {
+    "stocks": "Stocks",
+    "bonds": "Bonds",
+    "etfs": "ETFs",
+    "mutualFunds": "Mutual Funds",
+    "crypto": "Cryptocurrency",
+    "realEstate": "Real Estate",
+    "commodities": "Commodities",
+    "cash": "Cash",
+    "derivatives": "Derivatives",
+    "forex": "Foreign Exchange"
+  },
+  "investmentTypes": {
+    "growth": "Growth Investing",
+    "value": "Value Investing",
+    "dividend": "Dividend Investing",
+    "index": "Index Investing",
+    "esg": "ESG Investing",
+    "dayTrading": "Day Trading",
+    "swing": "Swing Trading",
+    "dca": "Dollar-Cost Averaging"
+  },
+  "banking": {
+    "savingsAccount": "Savings Account",
+    "checkingAccount": "Checking Account",
+    "fixedDeposit": "Fixed Deposit",
+    "interestRate": "Interest Rate",
+    "apr": "APR",
+    "apy": "APY",
+    "compoundInterest": "Compound Interest",
+    "principal": "Principal",
+    "maturity": "Maturity"
+  },
+  "budgeting": {
+    "income": "Income",
+    "expenses": "Expenses",
+    "savings": "Savings",
+    "investments": "Investments",
+    "needs": "Needs",
+    "wants": "Wants",
+    "emergencyFund": "Emergency Fund",
+    "trackExpenses": "Track Expenses",
+    "setBudget": "Set Budget",
+    "reviewSpending": "Review Spending"
+  },
+  "debt": {
+    "creditCard": "Credit Card",
+    "studentLoan": "Student Loan",
+    "mortgage": "Mortgage",
+    "personalLoan": "Personal Loan",
+    "interestRate": "Interest Rate",
+    "minimumPayment": "Minimum Payment",
+    "balance": "Balance",
+    "debtFree": "Debt Free",
+    "consolidation": "Debt Consolidation",
+    "snowball": "Debt Snowball",
+    "avalanche": "Debt Avalanche"
+  },
+  "inflation": {
+    "inflationRate": "Inflation Rate",
+    "purchasingPower": "Purchasing Power",
+    "cpi": "Consumer Price Index",
+    "realReturn": "Real Return",
+    "nominalReturn": "Nominal Return",
+    "hedge": "Inflation Hedge"
+  },
+  "risk": {
+    "low": "Low Risk",
+    "medium": "Medium Risk",
+    "high": "High Risk",
+    "volatility": "Volatility",
+    "diversification": "Diversification",
+    "correlation": "Correlation",
+    "beta": "Beta",
+    "alpha": "Alpha",
+    "sharpeRatio": "Sharpe Ratio",
+    "maxDrawdown": "Max Drawdown",
+    "riskTolerance": "Risk Tolerance"
+  },
+  "portfolio": {
+    "allocation": "Asset Allocation",
+    "rebalance": "Rebalance",
+    "performance": "Performance",
+    "returns": "Returns",
+    "gain": "Gain",
+    "loss": "Loss",
+    "totalValue": "Total Value",
+    "profitLoss": "Profit / Loss",
+    "roe": "Return on Investment",
+    "annualizedReturn": "Annualized Return"
+  },
+  "market": {
+    "bullMarket": "Bull Market",
+    "bearMarket": "Bear Market",
+    "correction": "Correction",
+    "crash": "Market Crash",
+    "recession": "Recession",
+    "recovery": "Recovery",
+    "volatility": "Market Volatility",
+    "liquidity": "Liquidity",
+    "spread": "Bid-Ask Spread",
+    "volume": "Trading Volume"
+  }
+}

packages/i18n/src/locales/en/gamification.json

@@ -0,0 +1,62 @@
+{
+  "xp": {
+    "label": "XP",
+    "earned": "{{count}} XP earned",
+    "needed": "{{count}} XP to next level",
+    "reason": {
+      "lessonCompleted": "Lesson completed",
+      "quizPassed": "Quiz passed",
+      "streakMaintained": "Streak maintained",
+      "challengeCompleted": "Challenge completed",
+      "simulationCompleted": "Simulation completed",
+      "diversification": "Portfolio diversified",
+      "riskManagement": "Good risk management",
+      "hypeAvoided": "Avoided market hype",
+      "debtPaidOff": "Debt paid off"
+    }
+  },
+  "level": {
+    "label": "Level",
+    "current": "Level {{level}}",
+    "progress": "Level {{current}} — {{progress}}% to Level {{next}}"
+  },
+  "badges": {
+    "title": "Badges",
+    "unlocked": "Badge Unlocked!",
+    "locked": "Locked",
+    "progress": "{{count}} of {{total}} badges",
+    "categories": {
+      "milestone": "Milestones",
+      "skill": "Skills",
+      "behavior": "Behaviors",
+      "special": "Special"
+    }
+  },
+  "achievements": {
+    "title": "Achievements",
+    "recent": "Recent Achievements",
+    "all": "All Achievements",
+    "empty": "Complete lessons to earn achievements"
+  },
+  "streaks": {
+    "label": "Streak",
+    "current": "{{count}}-day streak",
+    "longest": "Longest: {{count}} days",
+    "days": "{{count}} day",
+    "days_plural": "{{count}} days",
+    "maintain": "Complete a lesson today to keep your streak!",
+    "lost": "Streak lost. Start again tomorrow!"
+  },
+  "leaderboard": {
+    "title": "Leaderboard",
+    "rank": "Rank",
+    "player": "Player",
+    "xp": "XP",
+    "level": "Level",
+    "badges": "Badges",
+    "yourRank": "Your Rank",
+    "empty": "No rankings yet. Start learning!",
+    "classroom": "Classroom Leaderboard",
+    "global": "Global Leaderboard"
+  }
+}

packages/i18n/tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "resolveJsonModule": true,
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext"
+  },
+  "include": ["src/**/*.ts", "src/**/*.json"],
+  "exclude": ["node_modules", "dist", ".turbo"]
+}