Show HN: I open-sourced my Go and Next B2B SaaS Starter (deploy anywhere, MIT)

Summary

⭐ Production SaaS Starter Kit The Enterprise-Grade SaaS boilerplate for serious founders. Built with Next.js 16 and Go 1.25. 🛠️ Built With Frontend Stack Next.js 16 (v16.0.10) Modern React framework with App Router and API routes. (v16.0.10) Modern React framework with App Router and API routes. React 19 (v19.2.3) Latest React with improved performance and concurrent features. (v19.2.3) Latest React with improved performance and concurrent features. TypeScript (v5.7.3) Type-safe JavaScript for enhanced developer experience. (v5.7.3) Type-safe JavaScript for enhanced developer experience. Tailwind CSS (v3.4.17) Utility-first CSS framework for rapid UI development. (v3.4.17) Utility-first CSS framework for rapid UI development. shadcn/ui + Radix UI Accessible component library with 29+ pre-built components. + Accessible component library with 29+ pre-built components. TanStack Query (v5.90.5) Powerful data fetching and state management. (v5.90.5) Powerful data fetching and state management. Zustand (v5.0.8) Lightweight state management for UI state. (v5.0.8) Lightweight state management for UI state. react-hook-form + Zod Type-safe forms with schema validation. + Type-safe forms with schema validation. Stytch Enterprise authentication with magic links, OAuth, and SSO. Enterprise authentication with magic links, OAuth, and SSO. Polar.sh Billing integration and subscription management. Billing integration and subscription management. Recharts Composable charting library for data visualization. Backend Stack 🥇 Features Authentication : Sign in with Magic Link, Google OAuth, and Enterprise SSO. : Sign in with Magic Link, Google OAuth, and Enterprise SSO. Multi-Tenancy : Built-in Organization support with strict data isolation. : Built-in Organization support with strict data isolation. Roles & Permissions : Granular RBAC system with 3 roles (Member, Manager, Admin) and 7 permission types. : Granular RBAC system with 3 roles (Member, Manager, Admin) and 7 permission types....