A 3D tabletop that counts diagonals the Pathfinder way
Tabletop is system-agnostic on purpose. For Pathfinder that means the diagonal rule you actually use is one setting away, creature sizes take the right number of squares, and reach and flanking are questions the ruler can answer.

Diagonals: 5, 10, 5
Set the measure mode to "Diagonal 5/10 ft" and every second diagonal costs two squares, on both the ruler and token drags. The path highlight shows the squares counted, so a disputed move is settled by looking at it.

Sizes, reach and elevation
Large tokens occupy two by two squares and snap accordingly. The ruler measures between any two points on any surface, so the distance from a giant on a ledge to a fighter below includes the drop, reported as "30 ft · 10 ft up".
Initiative and conditions
A turn tracker with rolls you can overwrite, a round counter, and per-token conditions and HP. It does not apply Pathfinder's conditions for you; it remembers what you decided.

Questions
Does it support Pathfinder 2e automation?
No. There is no rules engine. It is a place to fight on, with the measuring and tracking a physical table would need.
Can I use Pathfinder-style flip-mats?
Any image can be used as a token, and any .glb as terrain. A flat image map as a floor is not a first-class feature yet; the library is built for 3D scenes.
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