No, Workforce does not currently have a url scheme to support launching Workforce and opening a particular assignment. That is in our backlog, but is not assigned for a release.
Actually I was referring to opening the website app, not the field app. I want to open the website app via a URL so that a dispatcher can dispatch without navigating manually to the website. All they have to do is hit the link and it bring them to the dispatch website.
It works for me; you might want to see if you're signed in - which would be one reason you're redirected to the sign-in page.
If it doesn't redirect you after signing in - you should log an issue with Technical Support as you may be encountering a bug.
After logging in, it brings me to my workforce projects page. Then I have to click "open" on my project. The desired workflow is like something like this:
-User clicks on link
-Bring them to AGOL login screen
-After login it brings them directly to the workforce project so they can start dispatching work
Yes, I agree - as it's not working for you, I suggest contacting Technical Support so they can reproduce and log an issue or attach you to an existing issue so you can be made aware of the progress of it.
We're working on the next release Workforce now - will look at getting this addressed in it.