I'll add a
link to flyspray here, for instance.
You can bookmark it.
I'm sure, we'll eventually add a link to the player page in Cantr. If you have suggestions where that link might be useful, let us know.
As for adding comments, I'm not sure how limited a non-admin user is. I would only look at a certain task, and then I'd have a textbox at the bottom, with a button labelled 'add comment'. If that is not the case for you, then you likely can't add comments to tasks.
Maybe that's even desirable for us, since we moved to flyspray to keep a better overview of bugs we need to take care of. Cluttering the reports with comments is kind of counter-productive.
On the other hand, helpful comments, even after the task has been opened, might be in our best interest. Maybe we can work something out. Let me think about it.