Joseph

All, this pull-request (and the sister PR to [aerie](https://github.com/NASA-AMMOS/aerie/pull/1513)) are ready for an in-depth review! Note that some E2E + unittests are still being worked here, but should not have...

E2E & unittests are now stable and should be complete. The one caveat is that due to them all relying on the changes to `aerie`, the tests will fail underneath...

> @JosephVolosin @pranav-super Can you provide some sample external events for testing purposes? There's a few example files in `e2e-tests/data` - especially the derivation ones. We have some other examples...

Seeing e2e tests pass on my local machine, but seems like they're having trouble in the GH check - see screenshots below   Might be related to timing? I...

> Could you construct a sample events file that contains several thousand (or more) events so that we can ensure that the timeline and other UI elements render acceptably under...

FYI, created https://github.com/NASA-AMMOS/aerie-ui/issues/1486 to track the future improvement of styling for the tab list in `TimelineItemsPanel.svelte`.

Having some issues with the E2E tests, but all External Source tests are passing locally. Note that because there is a separate Gateway branch for this pull-request there's issues with...

> > > @JosephVolosin @pranav-super Seeing this error when uploading the sample source file after uploading the types: > > > > Internal Server Error {"message":"The source and/or event types...

> Could you add a gap between all of the inputs in your forms? Added! I tried to use `gap-1` from Tailwind for it, and then also moved the form...

> @JosephVolosin ready to merge? Yep!