Removed the fallback Open Graph image logic from the header and deleted the unused `ogp.png` file. Also removed the `image` field from `_config.yml` as it is no longer necessary. Simplifies configuration and ensures only page-specific images are used.
Introduced initial setup for a Jekyll-based site, including configurations, layouts, assets, and styles. Added custom 404 page, favicon assets, SCSS themes, fonts, and a blog post template to establish the foundation for the site.
