UI chrome (dropdown carets, undo/redo, checkmarks, close/menu/osnap,
layer/file-menu icons) and ribbon tool icons were drawn as Unicode
glyphs. Desktop fills missing glyphs via system-font fallback, but the
web build bundles only Fira Sans with no fallback, so they rendered as
empty tofu boxes (issue #116).
Add a shared src/ui/icons.rs (SVG-backed, tintable) plus bundled assets,
and switch every glyph site and IconKind::Glyph tool def to SVG.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add a customization menu (far-right handle) that lists every status-bar
pill with a check mark; toggling a row shows or hides that pill, and the
choice persists across sessions in the config dir.
New pills:
- Coordinates: live cursor readout (re-adds the model-space world offset
so it shows true drawing coordinates), updated on every move rather
than only while a command is active.
- Clean Screen: hide the ribbon and side panels for a full canvas.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
