Plugins?

[lumitry]

I have no idea how to create a plugins/modification API, nor do I know what plugins would actually be necessary since I'm mostly developing this app for me.

I think Obsidian's approach to their "core plugins" is pretty good: by default, a reasonable selection of plugins that were made by the devs are selected. Power users may choose to enable more of them. To make this app simple for users who don't want something extremely customizable and complex, something similar could be implemented with a set of "core plugins". The ones disabled by default would be the more complicated ones, especially those that require some level of configuration to work (the app should just work "out of the box").

As a feature add, something similar to browser extension files could be added where power users could develop/find extensions and add them via importing some file. But I have no idea how that'd be implemented. Something simpler would be scripts.