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

messages/en.json

@@ -87,10 +87,11 @@
       }
     },
     "projects": {
-      "title": "Selected Works",
-      "subtitle": "A collection of projects I've worked on, ranging from web applications to experiments.",
+      "title": "Selected Work",
+      "subtitle": "Projects that pushed my boundaries.",
       "featured": "Featured",
-      "viewAll": "View All Projects"
+      "viewAll": "View Archive",
+      "noProjects": "No projects yet."
     },
     "contact": {
       "title": "Contact Me",