what file to affix something to the top of every post?
I want to put a shortcode to the top of every post, this area: .wpforo-post-content-top
where can I find this in plugin files?
You can customize wpForo template files using this instruction:
The area you're searching for is located in post.php template file of according layout folder. If you use the Extended Forum Layout, it's in this folder:
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