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/utils/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "@investplay/utils",
+  "version": "0.1.0",
+  "private": true,
+  "description": "InvestPlay shared utility functions",
+  "main": "./src/index.ts",
+  "types": "./src/index.ts",
+  "scripts": {
+    "lint": "eslint \"src/**/*.ts\" --fix",
+    "typecheck": "tsc --noEmit",
+    "test": "vitest run",
+    "clean": "rimraf .turbo"
+  },
+  "dependencies": {
+    "zod": "^3.24.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.8.0",
+    "vitest": "^3.1.0",
+    "eslint": "^8.57.0",
+    "rimraf": "^6.0.0"
+  }
+}