Looks cool! I have been using Docusaurus[0] for this same exact use case for a while and although the primary use case is for documentation, the experience of writing notes is great too. You can write your notes in either MDX or Markdown. Search can be added using Algolia DocSearch[1] and deployment to GitHub Pages or Netlify or similar static site hosting platforms is a breeze. The only thing it's lacking is tags which I'm sure can be added with a little bit of work.

[0] https://v2.docusaurus.io/

[1] https://github.com/algolia/docsearch

Notes: https://rsapkf.github.io/notes/