Firefox reliably remembers my tabs, but never my pinned tabs-- which, of course, are the ones that I actually want to be preserved across restarts. In my dream

Firefox reliably remembers my tabs, but never my pinned tabs-- which, of course, are the ones that I actually want to be preserved across restarts. In my dream world, pinned tabs persist forever, and are even accessible across devices, perhaps sorted into separate containers à la Sideberry.