theme: dark status tokens + charts; remove font @import; contract conformance

Adds dark destructive/success/warning overrides, --chart-1..5, --info,
subtitle, motion aliases. Font @import moved to README (PostCSS ordering).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

README.md

@@ -13,6 +13,13 @@ import like any other Crema theme.
 @import "tailwindcss";
 ```
 
+Load the fonts at the very top of your app's entry CSS (the theme no longer
+`@import`s them — the token contract bans font `@import`s inside `theme.css`):
+
+```css
+@import url("https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,700;1,6..72,400&family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap");
+```
+
 That's it. All `@crema/content-ui` consumers (Article, ArticleHeader,
 ArticleMeta, Prose, Pullquote, etc.) automatically pick up the editorial
 look because Modena targets `[data-slot="article"]` and `[data-slot="prose"]`.