init: шаблон Next.js приложения

- Next.js 16 + React 19 + TypeScript
- Mantine UI + PostCSS Modules
- Biome (линтинг и форматирование)
- Zustand, SWR
- Структура FSD (screens, widgets, features, entities, shared)
- Шаблоны генерации (.templates/): component, screen, feature, widget, entity, layout, store
- Конфигурация VS Code (расширения, настройки)
- CSS-токены (цвета, отступы, радиусы, медиа)
- Open Graph метаданные
- Тестовый home screen с Mantine

AGENTS.md

@@ -0,0 +1,5 @@
+<!-- BEGIN:nextjs-agent-rules -->
+# This is NOT the Next.js you know
+
+This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in `node_modules/next/dist/docs/` before writing any code. Heed deprecation notices.
+<!-- END:nextjs-agent-rules -->