Thanks for the mockup, I'll try to follow it.
I think I was a bit optimist about releasing a first tech preview this week. PHP's backend was quick to implement, so I made myself a false idea about difficulty of coding the news reader.
In the frontend, being out of the standard flow of the framework, I struggle with each component.
Actually, I have feeds correctly loaded and displayed as subnode of container.
Now, I struggle with grid updates, I'm looking at how grid is notified of tree selection change, and how grid get data for the right container (to adapt this on getting item of the right feed). I understand that all this as to do with filter, so now, I'm trying to digg in filter related stuff to understand what append and how (what filter is a user filter, what is used internally and how... etc.)
Grid, recordProxy, filters and filterPlugin, etc... It's a lot of code to discover and analyse to understand how it work under normal operation, and how I can adapt them in the newsreader context. So I'm very slow to make each step forward. I hope you will be patient.