Cargo: codec eaa6d79, kernel bb355ca, graph 9c17779

- Gradient stops keep their DWG color book name and book; RGB wins over
  ACI in a DXF gradient block in either tag order.
- MTEXT decimal tab stops keep their alignment character.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/scene/entity.rs

@@ -3176,10 +3176,12 @@ impl Scene {
                 codec::entities::hatch::GradientColorEntry {
                     value: 0.0,
                     color: to_color(c0),
+                    ..Default::default()
                 },
                 codec::entities::hatch::GradientColorEntry {
                     value: 1.0,
                     color: to_color(c1),
+                    ..Default::default()
                 },
             ];
         }

src/scene/hatch_boundary/tests.rs

@@ -17,10 +17,12 @@ fn gradient_stops_keep_entity_transparency() {
         codec::entities::hatch::GradientColorEntry {
             value: 0.0,
             color: codec::types::Color::Rgb { r: 255, g: 0, b: 0 },
+            ..Default::default()
         },
         codec::entities::hatch::GradientColorEntry {
             value: 1.0,
             color: codec::types::Color::Rgb { r: 0, g: 0, b: 255 },
+            ..Default::default()
         },
     ];