Extends the proxy-graphics decoder past the door/wall's absolute polylines
so an ACAD_TABLE preview renders in full:
- type 29 transform: a 4x4 local->world matrix now applies to every
following primitive (identity for the door/wall, which are absolute).
- type 9 shell: vertices + a face list -> each face as a closed boundary
(the table's cell rectangles).
- type 32: a normal-tagged polyline (grid lines).
- type 38 text: position + direction (its length is the glyph height) +
UTF-16 content and font, drawn as glyph strokes (simplex.shx and kin are
single-stroke fonts, so the outline is the character).
True-colour (22) and lineweight (23) traits now reach real geometry too.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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