first build commit

.env.example

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+# Database
+DATABASE_URL="postgresql://financeapp:password@localhost:5432/financeapp"
+
+# NextAuth
+NEXTAUTH_SECRET="<generate with: openssl rand -base64 32>"
+NEXTAUTH_URL="http://localhost:3000"
+
+# Seed user (used by prisma/seed.ts only)
+SEED_EMAIL="your@email.com"
+SEED_PASSWORD="your-secure-password"
+
+# Postgres (used by docker-compose.yml)
+POSTGRES_USER="financeapp"
+POSTGRES_PASSWORD="password"
+POSTGRES_DB="financeapp"