# CodePress Developer

The CodePress developer guide contains the following topics:

- **Architecture** — CMS architecture and folder structure
- **Core classes** — CodePressCMS, ThemeManager, PluginManager, AdminAuth
- **Plugin development** — Plugin types (content/system), structure, API
- **Routing** — Frontend, admin and plugin admin routing
- **Security** — XSS, CSRF, path traversal, RBAC
- **Testing** — Penetration, accessibility and functional tests
- **Debugging** — Logging and cache
- **Performance** — OPcache and SCSS caching

Important concepts in CodePress 2.6.1:

- **Plugin types** — Content plugins (sidebar) and system plugins (admin menu, routes, API)
- **Admin plugin API** — System plugins can register admin menu items and routes
- **SCSS compilation** — `ThemeManager` compiles SCSS to `css_compiled/` via scssphp (read-only)
- **Asset serving** — `public/asset.php` serves themes/, admin/assets/ and plugins/ on Apache (instead of PHP dev router)

Select a topic from the navigation on the left.