as if physicists even today do not differ in their preferred interpretation/"solution"/explanation/"way of understanding". typically, the preferences seem to, ahem, revolve around an individual's particular perspective on where the conundrum lies, and whence it arises, which is satisfyingly relativistic in itself.

I note that you assert that Alice and Bob make certain inferences; but these inferences can only be based, not merely on their observations, but on their knowledge of the structure of the experiment and their (or at least, Alice's) erroneous understanding of time-space dilation under relativistic motion. to the extent that the inferences are based on actual observation, you have elided the question of who is making what observation, and how. Bob's inference of Alice's experience requires that Bob actually have some way of measuring Alice's speed, as well as the distance to her target. Similarly, Alice's inference requires that Alice have some way of measuring either the speed at which she is moving away from Bob, or the speed at which she is approaching her target. We can imagine that, in advance of the experiment, they agree on some clever scheme such as each of them focusing a laser beam at the other; when Alice observes the "appropriate" red-shift in the light from Bob, she will know she is traveling at the predetermined speed. But what is the appropriate red-shift? How will they calculate it? And will Bob observe the same red-shift, or a greater or lesser? Etc.

Consider alternatively, structuring the experiment so that Alice moves her specialized space ship to a distance of 1000000km from Bob, and then fires up engine 1 to propel herself perpendicular to the line from her to Bob, and fires up engine 2 to maintain her distance at 1000000km. In other words, for lack of "real" gravity, she will use a secondary perpendicular engine to keep her in orbit around Bob at a constant distance. Knowing her distance from himself (established by any number of trivial means), Bob can know her speed in his frame of reference simply by tracking the angular rate of her trajectory. So, what in heaven's name will Alice now make of her situation? Her distance from Bob does not change (in bob's frame of reference) ... but how exactly does she know that ... and does it change in her own frame of reference? Indeed, how does the ship manage to control itself in the necessary fashion? Hmm, that's a confusing mystery isn't it? Tell you what: We'll build an enormous circular magnetic rail system in space, 1000000km in radius, and Alice's ship will whoosh along it, zooming along at .6c as understood by Bob, (who could be sitting at the center of the circle of iron, or docked on its outer rim, without changing the outcome) or indeed, by the rail system itself, which can be engineered to keep Alice racing over its course at just the rate desired.

Now there is nothing left for Alice to infer. She knows precisely what her speed is in Bob's frame of reference, and she knows precisely what Bob will perceive to be her distance traveled as well as the time she has spent traveling.

So now, suppose that Bob has a little radio beacon sending out regular pings at a predetermined rate of 1 per second, at a predetermined frequency of 1Ghz. Will Alice perceive the rate of the pings to be 1 per second? 1.25 per second? 0.8 per second? Something else? Will she perceive the frequency of the waves to be 1Ghz? 1.25Ghz? 0.8Ghz? Something else?

if you really want to start fucking with people's heads, instead of putting alice on a rail, put her in a pod at one end of a 2,000,000 km lever, with a perfectly counterweighted pod on the other end, and mount the whole thing onto your gigantic "wheel", mostly just for the hell of it, and accelerate the lever by pushing the pods using magnets in the rim of the wheel, and spin it up to 200 or 300 rpms, and put little blinky lights all along the lever, all of which you start blinking at the same moment, but using their own clocks, before you start anything spinning up at all ... and then shine lasers pulsed at a given rate from the center of the lever down its hollow tube out to the pods, where the light is reflected off a mirror and sent back, where some of it is detected at the center and the rest allowed to zip along back to the opposite pod ... and ask yourself ... WHAT THE FUCK IS GOING TO BE OBSERVED, AND BY WHOM? how does a 2,000,000km lever behave when it is experiencing a continuum of differential time/inertial frame of reference at relativistic scales all along its extent from its fulcrum (axle) to its load (life pod)?