- Added comprehensive Content Workflows section to CONTRIBUTING.md
- Documented how to add portfolio projects with TypeScript data structure example
- Documented how to add blog posts using MDX format
- Documented i18n workflow for translations with JSON structure
- Added file location conventions for all locales (de, en, sr)
- Included step-by-step instructions and best practices
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>