fix: i18n for project section strings, unique SVG pattern IDs, remove hardcoded text

- Projects.tsx: use t() for title, subtitle, viewAll, noProjects
- ProjectsPageClient.tsx: use tList('title') instead of hardcoded 'Archive'
- ProjectThumbnail.tsx: useId() for unique SVG pattern IDs to avoid collisions
- Remove unused sizeClasses variable
- en.json: update project subtitle and add noProjects key
- de.json: update German translations for project section

app/_ui/ProjectsPageClient.tsx

@@ -75,7 +75,7 @@ export default function ProjectsPageClient({
           </Link>
           
           <h1 className="text-6xl md:text-[10rem] font-black tracking-tighter text-stone-900 dark:text-stone-50 leading-[0.85] uppercase">
-            Archive<span className="text-liquid-mint">.</span>
+            {tList("title")}<span className="text-liquid-mint">.</span>
           </h1>
           <p className="mt-8 text-xl md:text-3xl font-light text-stone-500 dark:text-stone-400 max-w-2xl leading-snug tracking-tight">
             {tList("intro")}