Vue Frontend + NodeJS backend - local web app (browser)

Question

I need to create an application which will be ran on the browser (local only, not hosted online). I will need to use a lightweight database which has a physical file (eg SQLite3, so I can have a .db file).

Also, just to mention:

• I cant use IndexedDB alone to save the data because clearing browser data would clear the entire "database".
• I also wouldn't be able to use electron since the bundle is too big. I need the browser for its portability
• Also cant use PouchDB, since due to security constraints, online sync (CouchDB, etc) is not possible. Then it would be 100% stored in IndexedDB, which brings me back to my point on bullet 1

My question is - is there a way to create an offline web application build with VueJS frontend + NodeJS backend? I only need NodeJS because SQLite only works on the Node environment.

Deployment is preferably in .html only (is there any way that is possible, and access only using the file protocol file://)? Otherwise, I may consider using a local web server (localhost) - I'm not sure though if it is possible to serve an html file without any installations (node, python, etc), so I would still have to check all my options about this.

Any thoughts?

I am still new to this so please bear with me! There is very limited info online that talks about a 100% offline web application. Thanks a lot!