Classic engineering patterns applied to SvelteKit + TypeScript + Supabase projects. Use when structuring a SvelteKit app, organizing data access, abstracting third-party services, managing shared state, improving testability, or when the user describes a problem that a Factory, Repository, Service Layer, Singleton…
Security review and hardening guidance for a SvelteKit SPA with Supabase Auth, Postgres with RLS, and client-side rendering. Use when writing auth flows, adding RLS policies, handling user input, working with environment variables, reviewing code for vulnerabilities, hardening a feature, or when the user asks about…