"Tags" are similar to twitter hashtags, you can use them to categorize a post. For example, if you create a post about Android you can add the tag "android" (without "#"). When you manage a magazine you can add one or more tags (always without "#") to see posts of the fediverse with that tag.
I have no idea about "badges" :)
I would prefer not to spam kbin about this application, but if you think it might be useful to others you are free to post a link in other magazines/fediverse. Thanks for the tip about Obtainium.
My need was to open the site in a dedicated browser to keep it separate from the default browser, so I put together some code I had available from other projects to create this app. I have shared it in case it might be useful to others, although for most people using the default browser to view the site is the best choice.
