web-components

Architecture and coding rules for single-page applications using web components, BCE layering, lit-html templating, unidirectional Redux-style state management (reduction.js, standards-based), and standards-based client-side routing (Navigation API + URLPattern). Web standards and web platform first, minimal external dependencies. Composes with web-conventions (semantic HTML, accessibility, design tokens, Baseline policy). Use when creating, scaffolding, generating, writing, or reviewing web component applications, custom elements, state management, client-side routing, or frontend BCE architecture. Not for server-side rendering or framework-heavy applications, and not for static content sites without client-side state — use web-static for those.