(feat): display expected token size of copied text

[jiito]

Feature summary

On the web application, display the estimated token size of the repo context.

Problem / motivation

I've often used Gitingest to copy full context of a repo into a chatbot client for quick questions or generating a summary document for using the repo. Often I've copied the full repo context only to find that it was much too long for a chatbot message.

It would be great to have an idea of the estimated size

Proposed solution

No response

Alternatives considered

No response

Which interface would this affect?

Web UI

How important is this to you?

Nice to have

Would you like to work on this feature yourself?

Yes, I'd like to implement it

Would you need support from the maintainers (if you're implementing it yourself)?

No, I can handle it solo

Additional context, screenshots, or examples

I've always appreciated the Google AI Studio token count when uploading a document