forked from 1b-agent/opencadstudio-upstream
- expand_defn: dedup the <1px baseline LOD branch the same way the <5px greek branch does, so colour-split MTEXT no longer stacks N overlapping baselines (one per \C segment) over the same OBB. - sysfont: memoise canonical_family_name process-wide. resolve_font calls it once per word on the MTEXT measure hot path and Face::resolve re-runs it right after; the fontdb query + linear family scans were uncached. - dimension/multileader/table: reword the 6 fill_tris_low FIXMEs. They cited a stale line and the wrong consumer — these fills render on the top-level path (panic-safe .get().unwrap_or), not the block cache, so they cannot trip emit_wire's debug_assert. State the real status: latent f32-precision debt, not a crash. Also fix the mis-indented text-fill WireModel in dimension.rs. - tests: add a host-independent colour-split test (two \C segments in a block keep ≥2 distinct wire colours — guards the per-wire colour fix) and a TTF-gated UTM fill test (paired, non-zero fill_tris_low). Note the arial-style test's LFF-fallback limitation. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>