Dark theme (default): Fusion-like blue-grey viewport #2e3440, darker chrome, subtle grid, light text, blue accent; light theme kept as a second Tokens set; toggle on the application bar (sun/moon), ui.set {dark}, kept between runs (eframe storage; browser local storage on the web); viewport, sketch, glyph, view cube, timeline and overlay colours all come from the theme; preview spinner and state in ui.inspect

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

Cargo.toml

@@ -46,7 +46,7 @@ image = { version = "0.25", default-features = false, features = ["png"] }
 
 # ui
 egui = "0.36"
-eframe = { version = "0.36", default-features = false }
+eframe = { version = "0.36", default-features = false, features = ["persistence"] }
 # Instant/SystemTime that also work in the browser (std panics on wasm32-unknown-unknown).
 web-time = "1"
 egui-wgpu = "0.36"