I currently use Noteself, a modification of tiddlywiki, for this kind of thing. I really like the concept you've created, but my paranoia / concern is that I can't save / copy / transport the thought-fractal I've created.
Noteself saves its status within the browsers local storage as well, but you can save it as an HTML file to make it transportable between browsers, computers, devices.
I'm constantly shifting between work and personal devices and need the seamless transition - which would imply either self-hosting or 'login required' model, which may not fit your roadmap (although you do mention 'login' above, and also you mention adding im/export). Understand it's in development, however, and respect for the stage you've gotten it to so far. Good work!
Noteself saves its status within the browsers local storage as well, but you can save it as an HTML file to make it transportable between browsers, computers, devices.
I'm constantly shifting between work and personal devices and need the seamless transition - which would imply either self-hosting or 'login required' model, which may not fit your roadmap (although you do mention 'login' above, and also you mention adding im/export). Understand it's in development, however, and respect for the stage you've gotten it to so far. Good work!