Initialize Hugo website with custom infinite-scroll theme

- Set up complete Hugo project structure with bilingual support (EN/DE)
- Create custom pyx-theme with modern, clean design
- Implement infinite scrolling single-page layout with sections
- Style with white background, black text, and blue accent color
- Add responsive navigation with smooth anchor scrolling
- Move logo assets to static/images directory
- Configure i18n translations for English and German (Swiss spelling)
- Add company data structure in data/company.yaml
- Create archetypes for consistent content frontmatter
- Update CLAUDE.md with comprehensive project documentation

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

themes/pyx-theme/theme.toml

@@ -0,0 +1,10 @@
+name = "Pyx Theme"
+license = "Proprietary"
+description = "Custom theme for Pyx Engineering AG"
+homepage = "https://www.pyx.ch/"
+tags = ["corporate", "multilingual", "business"]
+min_version = "0.123.0"
+
+[author]
+  name = "Pyx Engineering AG"
+  homepage = "https://www.pyx.ch/"