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>

prisma/seed.ts

@@ -0,0 +1,79 @@
+import "dotenv/config";
+import { PrismaClient } from "../src/generated/prisma";
+import bcrypt from "bcryptjs";
+
+const prisma = new PrismaClient();
+
+async function main() {
+  console.log("Seeding database...");
+
+  const hashedPassword = await bcrypt.hash("Password123!", 10);
+
+  // Admin
+  const admin = await prisma.user.upsert({
+    where: { email: "admin@second-brain.ru" },
+    update: {},
+    create: {
+      email: "admin@second-brain.ru",
+      name: "Администратор",
+      emailVerified: true,
+      role: "admin",
+      accounts: {
+        create: {
+          accountId: "admin@second-brain.ru",
+          providerId: "credential",
+          password: hashedPassword,
+        },
+      },
+    },
+  });
+
+  // Curator
+  const curator = await prisma.user.upsert({
+    where: { email: "curator@second-brain.ru" },
+    update: {},
+    create: {
+      email: "curator@second-brain.ru",
+      name: "Куратор",
+      emailVerified: true,
+      role: "curator",
+      accounts: {
+        create: {
+          accountId: "curator@second-brain.ru",
+          providerId: "credential",
+          password: hashedPassword,
+        },
+      },
+    },
+  });
+
+  // Student
+  const student = await prisma.user.upsert({
+    where: { email: "student@second-brain.ru" },
+    update: {},
+    create: {
+      email: "student@second-brain.ru",
+      name: "Ученик",
+      emailVerified: true,
+      role: "student",
+      accounts: {
+        create: {
+          accountId: "student@second-brain.ru",
+          providerId: "credential",
+          password: hashedPassword,
+        },
+      },
+    },
+  });
+
+  console.log("Created users:");
+  console.log(`  Admin:   ${admin.email}`);
+  console.log(`  Curator: ${curator.email}`);
+  console.log(`  Student: ${student.email}`);
+  console.log("  Password for all: Password123!");
+  console.log("Done.");
+}
+
+main()
+  .catch(console.error)
+  .finally(() => prisma.$disconnect());