Is there any special reason why like/share options are present in comments and not in the main topic?
Ok, that looked to me more like sharing the whole project, I think it is a bit out of context there.
Then I'd suggest to move it to be below the topic like in most blogs and news sites (and maybe remove the comments sharing?)
- On first post visible and dimmed (lights up when hover)
- On replies hidden and shows when hover.