fix(xref): blocks respect their internal draw order

Xref merge now inserts entities in the source block's chain order and
carries SortEntitiesTable objects across (remapped to merged handles).
draw_depth_map values become [depth, half] so exploded block/xref fills
and wide-polyline band wires both compose child depth as
insert_depth + in-block rank x half, recursing into nested inserts with
the same divisor - bands and fills from one block interleave by the
block's internal order instead of stacking at the insert's single depth.
Band batches split per rank via WireModel.depth_override; thin wires
stay merged. The wire arena falls back to a full rebuild when a slab
carries mixed depths so refreshes don't flatten band overrides.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/modules/annotate/aligned_dim.rs

@@ -188,6 +188,7 @@ impl CadCommand for AlignedDimensionCommand {
         Some(WireModel {
             taper_widths: Vec::new(),
             world_width: 0.0,
+            depth_override: None,
             fill_is_3d: false,
             pick_tris: Vec::new(),
             pick_tris_low: Vec::new(),
@@ -241,6 +242,7 @@ fn preview_aligned(p1: DVec3, p2: DVec3, dim_pt: DVec3) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/angular_dim.rs

@@ -132,6 +132,7 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/diameter_dim.rs

@@ -182,6 +182,7 @@ fn preview_line(a: Vec3, b: Vec3) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/dim_baseline.rs

@@ -181,6 +181,7 @@ impl CadCommand for DimBaselineCommand {
         Some(WireModel {
             taper_widths: Vec::new(),
             world_width: 0.0,
+            depth_override: None,
             fill_is_3d: false,
             pick_tris: Vec::new(),
             pick_tris_low: Vec::new(),

src/modules/annotate/dim_continue.rs

@@ -161,6 +161,7 @@ impl CadCommand for DimContinueCommand {
         Some(WireModel {
             taper_widths: Vec::new(),
             world_width: 0.0,
+            depth_override: None,
             fill_is_3d: false,
             pick_tris: Vec::new(),
             pick_tris_low: Vec::new(),

src/modules/annotate/dimjogline.rs

@@ -87,6 +87,7 @@ impl CadCommand for DimJogLineCommand {
         Some(WireModel {
             taper_widths: Vec::new(),
             world_width: 0.0,
+            depth_override: None,
             fill_is_3d: false,
             pick_tris: Vec::new(),
             pick_tris_low: Vec::new(),

src/modules/annotate/dimtedit.rs

@@ -102,6 +102,7 @@ impl CadCommand for DimTeditCommand {
         Some(WireModel {
             taper_widths: Vec::new(),
             world_width: 0.0,
+            depth_override: None,
             fill_is_3d: false,
             pick_tris: Vec::new(),
             pick_tris_low: Vec::new(),

src/modules/annotate/leader_cmd.rs

@@ -165,6 +165,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/linear_dim.rs

@@ -220,6 +220,7 @@ fn preview_wire(points: Vec<DVec3>) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/mleader_cmd.rs

@@ -152,6 +152,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/mleader_edit.rs

@@ -460,6 +460,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/ordinate_dim.rs

@@ -123,6 +123,7 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/qdim.rs

@@ -92,6 +92,7 @@ impl CadCommand for QdimCommand {
         Some(WireModel {
             taper_widths: Vec::new(),
             world_width: 0.0,
+            depth_override: None,
             fill_is_3d: false,
             pick_tris: Vec::new(),
             pick_tris_low: Vec::new(),

src/modules/annotate/radius_dim.rs

@@ -187,6 +187,7 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
     WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
+        depth_override: None,
         fill_is_3d: false,
         pick_tris: Vec::new(),
         pick_tris_low: Vec::new(),

src/modules/annotate/table_cmd.rs

@@ -141,6 +141,7 @@ impl CadCommand for TableCommand {
             Some(WireModel {
                 taper_widths: Vec::new(),
                 world_width: 0.0,
+                depth_override: None,
                 fill_is_3d: false,
                 pick_tris: Vec::new(),
                 pick_tris_low: Vec::new(),

src/modules/annotate/tolerance_cmd.rs

@@ -86,6 +86,7 @@ impl CadCommand for ToleranceCommand {
         Some(WireModel {
             taper_widths: Vec::new(),
             world_width: 0.0,
+            depth_override: None,
             fill_is_3d: false,
             pick_tris: Vec::new(),
             pick_tris_low: Vec::new(),