Add 3D-printable desk case for the VFD and a WEMOS D1 R1

Parametric OpenSCAD design: 15 degree bezel holding the display on M3
heat-set inserts, slides into the body; base carries the board with the
DC jack and USB reachable through the back. Includes STLs, previews and
collision checks.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CLAUDE.md

@@ -20,6 +20,10 @@ server, so `type: git` with a URL, not `github://`). The layout must stay
 - `docs/20L203DA12-datasheet.pdf`: the command set (section 5.4), jumpers,
   wiring and the CG-ROM tables (section 6). Check it before changing the
   protocol.
+- `case/vfd-case.scad`: parametric OpenSCAD desk case (body, bezel, base) for
+  the display and a WEMOS D1 R1. After any change, run all the `check_*` parts
+  (each must be empty or zero-volume) and re-export `case/stl/*.stl`. On
+  Windows, call `openscad.com` for console output.
 - `examples/samsung-vfd.yaml`: the full reference device config. It pulls the
   component from git; for local work, switch to the commented
   `type: local, path: ../components` source.