CarlosZiegler

Use when adding features, routes, components, API endpoints, database schemas, or modifying any part of the start-kit.dev SaaS starter. Covers project-specific architecture, conventions, and patterns for oRPC, Better-Auth, Drizzle RLS, shadcn/ui, Stripe, and feature modules.

TanStack Start best practices for full-stack React applications. Server functions, middleware, SSR, authentication, and deployment patterns. Activate when building full-stack apps with TanStack Start.

Clean up AI-generated code quality issues across a codebase using 8 parallel subagents. Targets duplication, type sprawl, dead code, circular dependencies, weak types, unnecessary defensive programming, legacy/deprecated code, and AI slop (stubs, LARPing, useless comments). Use when asked to "clean up code", "fix slop", "improve code quality", "no slop", "remove AI slop", "deduplicate", "consolidate types", "remove dead code", or any request to systematically improve a messy or AI-generated codebase.

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.