document.export {format: "png8" | "gif"} reduces the art to a palette of at most `colors`
(2–256) entries: median cut over a 15-bit histogram refined by k-means (perceptual,
selective or adaptive weighting), or the web-safe, black-and-white or grey palettes; art
with that many colours or fewer keeps them exactly. Dithering is Floyd–Steinberg diffusion,
an 8×8 ordered pattern or noise, with an amount. Pixels under half opacity become one
transparent entry; partly transparent edges blend over the matte. PNG-8 is an indexed PNG
(PLTE, tRNS, 1–8 bits per pixel, Adam7); GIF is a GIF89a (optionally interlaced). Both are in
document.formats, Export As (PNG-8 / GIF Options dialogs) and Export for Screens.
document.formats' writable list and the MCP export tool's format enum gain gif and png8
(their tests list them).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Shipped code no longer unwraps, expects or panics: every one of the 124
unwrap()/expect()/panic!/unreachable! sites outside tests now handles the
failure (Result/Option, ?, let-else, defaults) and reports errors to the user.
- Lints: workspace clippy denies unwrap_used, expect_used, panic, todo,
unimplemented and unreachable; clippy.toml allows them in tests, and
integration tests, examples and testkit opt out explicitly.
- Safety net (vectorcraft_engine::guard): a panic in a top-level command rolls
the document back and returns EngineError::Internal; a panicking tool is
reset; the MCP server answers with an internal error and keeps serving; the
UI frame and each control request are guarded.
- APIs that hid failures now return them: Rendered::to_png/to_jpeg/to_webp
return Result (JPEG/WebP errors used to write empty files),
FontDb::face returns Option, Region::top returns Option.
- Fuzzing: engine/tests/import_fuzz.rs feeds garbage, hostile and mutated SVG
and PDF through import → render → export (30k cases locally, no panics).
- Docs: AGENTS.md/CLAUDE.md rule, docs/development.md "Robustness" section,
README pointer and a PR template checklist.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Edit -> "PDF Presets…"; the clipboard preferences read "Legacy vector
clipboard (no transparency)" / "Legacy vector clipboard" (keys copyAicb and
aicbMode unchanged); the second keyboard shortcut set is "Classic Defaults",
and the old set name is still accepted from saved UI preferences, imported
sets and shortcuts.preset. The MCP server instructions, the apply_effect and
create_graph tool descriptions, the text.createInPath params doc,
docs/mcp.md, the ui-egui crate description and the PDF compatibility docs
no longer name another vendor.
New `cargo xtask brands` (run by `cargo xtask ci`) fails on vendor product
or company names in Rust string literals (labels, params docs, menus,
panels, MCP definitions; comments and test code skipped), Cargo.toml
descriptions and text under docs/ and packaging/; a required legacy alias
is marked `brand-ok`. xtask shares one git file listing between the asset
and brand checks. docs/development.md describes the gate.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
