Closes out the file-driven dim render. Remaining entity fields and the
last handful of DimStyle knobs are now honoured:
- leader_length: extend the radius/diameter dim line past the arrow tip
toward the text by this distance
- ext_line_rotation: rotate extension lines off perpendicular (DIMEDIT
Oblique result) for Linear / Aligned dims
- attachment_point: map the 1..9 grid to Text horizontal / vertical
alignment so the saved anchor is used
- horizontal_direction: use as in-plane text reading direction override
- DIMTXSTY by handle: prefer dimtxsty_handle over the name; survives
text-style renames
- DIMTFAC + DIMTOLJ: tolerance text rendered as a separate Text entity
scaled by DIMTFAC and aligned vertically by DIMTOLJ
- DIMALTTD + DIMALTTZ: alternate-units tolerance suffix formatted with
these decimal-place / zero-suppression knobs
- DIMARCSYM / DIMJOGANG / DIMUNIT / normal / line_spacing_factor /
insertion_point / block_name / version: read so the file round-trips
but no-op in the render path until the matching dim variants / 3D
text plane are supported
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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