* psd: .abr brush (v1/v2/v6+) and .grd gradient (v5) parsers and writers
Clean-room from public format descriptions: legacy computed/sampled brushes,
8BIM-sectioned samp/patt/desc files, 8/16-bit raw and PackBits tips. Bounded
(MAX_EDGE, MAX_TOTAL_BYTES), damaged brushes are skipped with warnings, hostile
input returns Err. Adds an abr fuzz target.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* paint: 36 grouped built-in brush presets and new procedural tips
General / Dry Media / Wet Media / Special Effects groups (pressure size/opacity
variants, airbrush, pencils, charcoal, pastel, crayon, rake, watercolour, ink,
oil, foliage, grass, stipple, sparkle, halftone…). Leaf, grass, charcoal,
sponge, star and rake tips are generated in code. BrushPreset gains a group.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* io: map .abr brushes onto BrushSettings
Tip shape, shape dynamics, scattering, texture (embedded patt patterns),
dual brush, colour dynamics, transfer, pose, noise, wet edges, build-up and
captured tool options; unmapped settings are reported as warnings. Includes
bench_abr (100-brush import, 5000-dab stroke).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* engine: brush.presets.importAbr and gradient.presets.importGrd
Path or base64 data, group per file (re-import replaces), unique names next to
the built-ins; graceful-failure tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* ui: real stylus pressure/tilt, grouped Brushes panel, Import Brushes
Pen force from egui Touch events (Windows WM_POINTER via winit), Pointer Events
pressure/tilt/twist on the web, tilt via ui.pointer; mouse stays 1.0. .abr/.grd
open from File > Open, drag-and-drop, Brushes panel and Preset Manager. Preset
previews keyed on a cheap signature instead of the full brush JSON.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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