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/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"
+    }
+  }
+}