M0: desktop app: toolbar, browser, timeline, GPU viewport, view cube, sketch tools, dialogs, control channel

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/geom/src/mesh.rs

@@ -61,6 +61,9 @@ pub struct Mesh {
     pub tri_face: Vec<u32>,
     /// B-rep edges as polylines.
     pub edges: Vec<Vec<Vec3>>,
+    /// Per edge: a seam between two pieces of the same smooth surface (not drawn).
+    #[serde(default)]
+    pub seams: Vec<bool>,
 }
 
 /// Mass properties of a closed mesh.

crates/geom/src/tests.rs

@@ -6,7 +6,7 @@ fn cube_mesh(s: f64) -> Mesh {
     let triangles =
         vec![[0, 2, 1], [0, 3, 2], [4, 5, 6], [4, 6, 7], [0, 1, 5], [0, 5, 4], [1, 2, 6], [1, 6, 5], [2, 3, 7], [2, 7, 6], [3, 0, 4], [3, 4, 7]];
     let n = triangles.len();
-    Mesh { normals: vec![Vec3::Z; 8], positions, triangles, tri_face: vec![0; n], edges: vec![] }
+    Mesh { normals: vec![Vec3::Z; 8], positions, triangles, tri_face: vec![0; n], edges: vec![], seams: vec![] }
 }
 
 #[test]