Replace the unwrap/expect calls in path closing, bounds, Pathfinder output
and gradient sampling with let-else / if-let; the ASE reader uses checked
offsets (a 32-bit length could overflow on wasm32). Both crates now deny
unwrap/expect/panic/unimplemented/todo/unreachable.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- color: Swatch.hidden — unnamed colours (applied, not listed in Swatches until added)
- engine: object.color (reuses a swatch with the same colour, else an unnamed one; fill or
stroke), swatch.addToSwatches (optionally named; users follow the rename),
swatch.addUnnamed (+ test)
- UI: Color panel with fill/stroke proxy, CMYK/RGB/Lab, channel sliders with gradient tracks and
value fields, tint slider for named swatches, spectrum ramp, Add to Swatches; Color Picker
dialog (double-click a proxy chip); Swatches hides unnamed colours
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
