perf: AABB snap pre-rejection via acadrust bounding_box() (Option K upgrade)

Add `aabb: [f32; 4]` field to WireModel (world-space 2-D bounding box).
In tessellate_entity() set each wire's AABB from e.as_entity().bounding_box()
via new entity_aabb() helper; Insert sub-entities each get their own AABB.
Preview/interim wires and any entity returning a zero-extent default box get
UNBOUNDED_AABB so they are never pre-rejected.

Replace the chord-sphere heuristic in Snapper::wire_in_range() with a proper
AABB vs snap-circle overlap test.  The new check is four scalar comparisons and
correctly handles closed curves (circles, arcs) which the chord-sphere approach
had to special-case.

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

src/modules/home/draw/attdef.rs

@@ -133,6 +133,7 @@ impl CadCommand for AttdefCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }

src/modules/home/draw/ellipse.rs

@@ -526,5 +526,6 @@ fn line_wire(from: Vec3, to: Vec3) -> WireModel {
         tangent_geoms: vec![],
         aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
     }
 }

src/modules/home/draw/line.rs

@@ -87,6 +87,7 @@ impl CadCommand for LineCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }

src/modules/home/draw/mline.rs

@@ -112,6 +112,7 @@ impl CadCommand for MlineCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }

src/modules/home/draw/raster_image.rs

@@ -111,6 +111,7 @@ impl CadCommand for ImageCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }

src/modules/home/draw/ray.rs

@@ -85,6 +85,7 @@ impl CadCommand for RayCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }
@@ -162,6 +163,7 @@ impl CadCommand for XLineCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }

src/modules/home/draw/revcloud.rs

@@ -82,6 +82,7 @@ impl CadCommand for RevCloudCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }

src/modules/home/draw/wipeout.rs

@@ -118,6 +118,7 @@ impl CadCommand for WipeoutCommand {
                     tangent_geoms: vec![],
                     aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
                 })
             }
             WipeoutMode::Polygonal => {
@@ -138,6 +139,7 @@ impl CadCommand for WipeoutCommand {
                     tangent_geoms: vec![],
                     aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
                 })
             }
         }

src/modules/home/inquiry/area.rs

@@ -75,6 +75,7 @@ impl CadCommand for AreaCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }

src/modules/home/inquiry/dist.rs

@@ -70,6 +70,7 @@ impl CadCommand for DistCommand {
             tangent_geoms: vec![],
             aci: 0,
             key_vertices: vec![],
+            aabb: WireModel::UNBOUNDED_AABB,
         })
     }
 }

src/modules/home/modify/stretch.rs

@@ -133,6 +133,7 @@ impl CadCommand for StretchCommand {
                     tangent_geoms: vec![],
                     aci: 0,
                     key_vertices: vec![],
+                    aabb: WireModel::UNBOUNDED_AABB,
                 })
             }
             _ => None,