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/ui-egui/Cargo.toml

@@ -1,8 +1,18 @@
 [package]
 name = "solvecraft-ui-egui"
+description = "SolveCraft user interface (egui + wgpu): the swappable front end"
 version.workspace = true
 edition.workspace = true
 license.workspace = true
 
 [lints]
 workspace = true
+
+[dependencies]
+solvecraft-engine = { workspace = true }
+egui = { workspace = true }
+egui-wgpu = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+log = { workspace = true }
+image = { workspace = true }