Property-panel coordinate display and block-insert scaling were both
hard-coded, ignoring the document's stored unit configuration.
- LUNITS / LUPREC: edit_prop() now formats values through a thread-local
UnitContext seeded by refresh_properties(). Decimal / Scientific /
Engineering / Architectural / Fractional all render correctly without
threading the document handle through every entity properties builder.
- AUNITS / AUPREC: format_angle() helper available (decimal degrees, DMS,
grad, rad). Callers that already format angular values via radians can
switch over without touching the helper signatures.
- INSUNITS + MEASUREMENT: xref's source INSUNITS is carried onto the
host BlockRecord.units during merge. commit_entity() then scales new
INSERTs so 1 source-unit maps to the host's INSUNITS length. When
either side is unitless (0) MEASUREMENT acts as the fallback
(0=Imperial / inches, 1=Metric / mm), matching AutoCAD's rule.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
