Every unwrap/expect/unreachable in non-test engine code now returns an
EngineError (or a predicate's Err string) or uses a real fallback:
- enabled predicates read the active layer through active_layer_of()
instead of unwrap() after has_layer();
- new raster layers get their pixels through pixels_mut()? instead of
surface_mut().expect("raster");
- layer paths use split_last().ok_or(..)? (Merge Down, Arrange, Ungroup,
Release Clipping), Auto-Align/Auto-Blend/Photomerge carry placements
instead of re-unwrapping them, and "next free name" searches are bounded;
- web export builds its options map directly, quantize_rows has a wasm
tail, parse_script rejects non-array/object JSON, the shape-layer edit
returns an error instead of unreachable!, and the gray composite
profile falls back to sRGB.
The engine denies unwrap/expect/panic/unimplemented/todo/unreachable.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
CI's `cargo fmt --all -- --check` has failed on every run because the
repo had no rustfmt config and was never formatted. Use the same settings
as EffectCraft/FilmCraft (max_width 160, use_small_heuristics Max), which
also keeps the churn small. Formatting only; no code changes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
