Provides a dedicated reference guide per SOLID letter (SRP file-splitting, OCP composition/plugin patterns, LSP contract compliance, ISP role-based interfaces, DIP constructor injection/factories) plus 23 ready-to-copy templates covering components, hooks, services, stores, Server Actions, API routes, validators, Prisma singletons, i18n, and queries. This is a cross-cutting code-quality skill, not a feature skill — for the framework APIs themselves see nextjs-16 and its sibling skills.

SOLID Next.js - Modular Architecture

Current Date (CRITICAL)

Today: January 2026 - ALWAYS use the current year for your searches. Search with "2025" or "2026", NEVER with past years.

MANDATORY: Research Before Coding

CRITICAL: Check today's date first, then search documentation and web BEFORE writing any code.