• Show "You have unread posts" message
• Maybe fade out latest read highlight after a few seconds
• Start to think about images

Images:

I can think of five sources of images off the top of my head (although there maybe some overlap): Upload from local device, pull from URL, Google images, local camera, Android intent ("Share image" from another app)

Once we've got an image, it needs to be added to a post. Again, a few options: Just post image, attach to end of post, inline in post.

Given that Markdown has an inline image tag (a link, bit with a leading exclamation mark), I'd like to support that, but getting the filename right (and things like scaling/rotation/crop) is going to be tricky/irritating. (Since this bit is almost certainly going to need JavaScript anyway, I've got a bit of wiggle room to make life easier. Things like an "insert image" button on the edit page that shows an image picker/uploader/editor, generates a link, and inserts it into the textarea)

That's actually sounding like a reasonable plan right now. The dialog tag works well for the consent screen. I'll have a think about what could/should go into the add image dialog.