feat: add diagnostics screen

[SgtPooki]

Adds diagnostics screen to the webui.

The page has tabs support, but only the logs tab is implemented currently.

• Add expandable log viewer window with icon
• Add pause/resume button when in that view
• fix mobile view for log viewer
• Fix IPFSConnected functionality when node shuts down while viewing diagnostics screen
• Fix forward ref error in console (see comment)

Related ipfs/go-log#160
Related ipfs/kubo#10885
Fixes #1925
DependsOn #2388
DependsOn #2396

With unsupported kubo versions:

Main view

Demo

2025-09-02.at.19.16.08.-.Salmon.Cheetah.webm

[SgtPooki]

latest changes using tooltip causes issue:

hook.js:608 Warning: Function components cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()?

Check the render method of `Tooltip`.
    in SvgGlyphMoveDown (at log-viewer.tsx:101)
    in div (at Tooltip.tsx:43)
    in div (at Tooltip.tsx:42)

[SgtPooki]

I have completed the logs screen changes and pushed them all, though there are several additional improvements I wanted to get to that I didn't..

• Currently, the system can handle around 200 logs per second (lps) quite comfortably and can manage spikes of up to 500 lps. I have set the default limit to 100 lps, which will show a warning when reached, and 500 lps will trigger an auto-disable feature.
• log streaming logic -- I wanted to tighten the logic between getting the stream of logs, adding to indexedDB, and rendering to the UI.. so that we're always rendering from indexedDB, (with a buffered/delayed stream) but I think it's sufficient now until someone gets the urge to improve it
• I wanted to create a download logs button so folks could export the full indexedDB content.. but that would require a much larger amount of changes.

I added a bunch of unit tests and other functions.. hopefully it's self documenting enough. The useBatchProcessor and reducer logic is a little wonky, but folks should be able to follow most pipelines easily enough.

I am currently rendering a demo video, which I will upload to the PR description.

Please let me know if you have any feedback. Also, be sure to check out the mobile view!