upgrade the backend setup

[AspadaX]

We can make use of SeaORM + Actix Web.

Below is an example of generating a Swagger UI with Actix Web:
https://github.com/Aditeya/utoipa-auto-docs-example

[AspadaX]

Binserve, a Rust program to serve the static files.
https://github.com/mufeedvh/binserve?tab=readme-ov-file#hello-world

[AspadaX]

Trieve, a Rust backend for search, chunking and retrieval. They provide a TS SDK.
https://docs.trieve.ai/getting-started/introduction