fix(pick): don't XY-cull the pick wire set in tilted 3D views

view_world_aabb built a world-XY cull rectangle from the camera target and
ortho size without checking the view angle, so in a tilted / 3D view it
produced a top-down box that does not bound the on-screen footprint. That
box culls the pick wire set (while the render holds the full set via the
static hold), so a mesh running partially off-screen fell outside the box
and became unselectable — by edge or by face — even though it still
rendered. Top views were unaffected (the box is correct there), and 3D
solids pick through their mesh AABBs (not this wire set) so they never
showed it.

Return None for tilted views (fwd.z.abs() < 0.999), matching view_cull_aabb,
so no world-XY cull is applied and the pick reaches every on-screen wire.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

src/scene/mod.rs

@@ -1028,6 +1028,17 @@ impl Scene {
             return None;
         }
         let cam = self.camera.borrow();
+        // A world-XY rectangle only bounds the on-screen footprint in a plan
+        // (top-down) view. In a tilted / 3D view the visible area maps to a
+        // skewed world region, so an axis-aligned XY box would wrongly cull
+        // entities that are actually on screen — and because this box culls the
+        // pick wire set (while the render holds the full set), those entities
+        // render but become unselectable. Skip culling there, matching
+        // `view_cull_aabb`.
+        let fwd = cam.rotation * glam::Vec3::Z;
+        if fwd.z.abs() < 0.999 {
+            return None;
+        }
         let aspect = self.last_render_aspect.get().max(0.01);
         let h = cam.ortho_size();
         let w = h * aspect;