I finally had the clarity of mind to step back and reassess things from a blank slate. Literally, I stepped back, held out my hands in the air at what felt like the most relaxed position, and declared that this is where the keyboard must be; that no longer will I contort myself to meet the keyboard—the keyboard must come to me.
The resulting setup is a bit of an oddity, which admittedly I enjoy as much for that quality as for its successful therapeutic effect:
The keyboard is split into two halves, each mounted vertically on opposing sides of a makeshift stand. The stand is a chamfered cube constructed from PolyConstructo hexagons, an educational toy intended for classroom use that I had on hand from a past Settlers of Catan project. Atop the structure is a conveniently flat surface that serves well as phone rest:
Adhesive foam pads harvested from an environmentally harmful paint-by-number kit damp the rattle of the phone’s haptic feedback:
and specialized “shift” keys that bring symbols, numbers, and arrow keys into easy reach:
My typing has been slower as I get used to the new layout, but as pointed out by a fellow ErgoDoxer at the hackspace, typing speed typically isn't the limiting factor when coding; most time is spent just thinking anyway.