Initialize Stage 0: Next.js 16 scaffold with auth and role-based routing

- Next.js 16.2.2 + React 19 + TypeScript + Tailwind v4
- Better Auth with email/password and role system (student/curator/admin)
- Prisma 7 schema: User, Session, Account, Verification + full LMS model
- Role-based dashboards: student /dashboard, curator /curator/dashboard, admin /admin/dashboard
- Auth pages: login, register, verify-email
- Better Auth API route handler
- Middleware for route protection
- Docker Compose with PostgreSQL 16
- Seed script with test users (admin/curator/student)
- CLAUDE.md and ROADMAP.md project documentation

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

.env.example

@@ -0,0 +1,16 @@
+DATABASE_URL="postgresql://lms_user:password@localhost:5432/lms_db"
+
+BETTER_AUTH_SECRET="generate-with: openssl rand -base64 32"
+BETTER_AUTH_URL="http://localhost:3000"
+
+RESEND_API_KEY=""
+EMAIL_FROM="noreply@school.second-brain.ru"
+
+S3_ENDPOINT="https://fsn1.your-objectstorage.com"
+S3_BUCKET="lms-uploads"
+S3_ACCESS_KEY=""
+S3_SECRET_KEY=""
+S3_REGION="eu-central"
+
+# Kinescope (добавить при получении платного плана)
+# KINESCOPE_API_KEY=""