Add full trilingual EN/FR/NB support across all pages and data

- Convert all data files (site, profile, norway, jazz, projects, cv) to Record<LocaleCode, string> fields
- Update all page templates to use LocaleCopy component for locale-aware rendering
- Fix CSS specificity conflict: .locale-copy .locale-copy__text (spec 20) now beats container span rules (spec 11)
- Update LocaleSwitcher, BaseLayout, and SectionCard for locale prop types
- Design system overhaul: Special Elite font, burgundy #8f2218, DG seal favicon

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/articles/kongsberg-jazz-2026.astro

@@ -1,18 +1,19 @@
 ---
 import { jazzArticle, jazzBody, jazzImages, jazzSources } from "../../data/jazz";
 import BaseLayout from "../../layouts/BaseLayout.astro";
+import LocaleCopy from "../../components/LocaleCopy.astro";
 ---
 
 <BaseLayout
   title={`${jazzArticle.title} | Dave Gilligan`}
-  description={jazzArticle.excerpt}
+  description={jazzArticle.excerpt.en}
 >
   <main class="jazz-page">
     <section class="container jazz-hero">
       <div class="jazz-hero__copy">
         <span class="eyebrow">Article / Jazz and Music</span>
         <h1>{jazzArticle.title}</h1>
-        <p class="jazz-hero__lede">{jazzArticle.excerpt}</p>
+        <p class="jazz-hero__lede"><LocaleCopy copy={jazzArticle.excerpt} /></p>
       </div>
 
       <aside class="panel jazz-hero__note">
@@ -47,8 +48,8 @@ import BaseLayout from "../../layouts/BaseLayout.astro";
           <span>Field report</span>
           <span>Kongsberg x Paris</span>
         </div>
-        {jazzBody.map((paragraph) => (
-          <p>{paragraph}</p>
+        {jazzBody.en.map((_, i) => (
+          <p><LocaleCopy copy={{ en: jazzBody.en[i], fr: jazzBody.fr[i], nb: jazzBody.nb[i] }} /></p>
         ))}
       </article>