Best practices for full-stack React development with TanStack Start, covering server functions, middleware, SSR, and authentication.

• Organizes 31 rules across 10 categories (server functions, security, middleware, authentication, SSR, error handling, and more) with priority levels to guide implementation order
• Covers critical patterns for server-side logic, input validation, secure session management, and client-server boundary handling
• Includes middleware composition, selective SSR configuration, streaming for performance, and environment-based configuration management
• Each rule provides explanation, anti-patterns, recommended implementations, and contextual guidance for when to apply or skip