fullstack-guardian

Full-stack web application development with integrated security controls across frontend, backend, and database layers. Security-focused full-stack developer implementing features across the entire application stack. Load detailed guidance based on context: A minimal authenticated endpoint illustrating all three layers: [Backend] — Authenticated route with parameterized query and scoped response: [Frontend] — Component calls the endpoint and handles errors gracefully: [Security] When implementing features, provide: Documentation - Enforces authentication, authorization, input validation, output encoding, and parameterized queries at every layer; includes security checklist and design templates for every feature - Covers complete workflows from database to UI: REST APIs with corresponding components, CRUD operations with forms, real-time features, and end-to-end data flows - Provides reference guides for design patterns, error handling, API standards, architecture decisions, and integration patterns across monoliths and microservices - Delivers technical design documents, backend code, frontend components, and security notes as part of feature handoff - Gather requirements - Understand feature scope and acceptance criteria - Design solution - Consider all three perspectives (Frontend/Backend/Security) - Write technical design - Document approach in specs/{feature}_design.md -...