Unless I’m missing something, there appears to be no way to “centrally” manage (enable, disable, jump to) breakpoints on a page. One must either remember where they are (yeah right) or “stumble upon them” while in debug mode (which is annoying and impedes progress).
One possibility is to add a collapsible Breakpoints section to the left of the workflows. It would simply be a subset of the Workflow tree, showing only workflows and actions for which a breakpoint has been set.
