* ACEScg: File Handling option opens colour-less EXR renders in the ACES working space
Our render pipelines write ACEScg (AP1 primaries, ACES white ~D60,
linear) and — like most — state no colour space in the EXR header, so
io's linear-sRGB default misrepresented them (saturated hues shifted).
- cms: AcesCg joins the built-in profiles, generated from the published
AP1 primaries and ACES white point with a linear TRC (id "aces-cg",
aliases acescg).
- engine: File Handling gets "Open color-less EXR as ACEScg". When on,
an EXR that io tagged with the linear-sRGB default opens as ACEScg
instead; embedded or EXIF-declared profiles stay untouched.
Translated in every catalog. ACES view transforms (OCIO-based display)
remain future work; this covers the document's source colours.
* scorecard: 26 of 158 (main's #3472 preference added one too)
* Regenerate docs/scorecard.md after merging main
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Co-authored-by: Brandon Thomas <echelon@gmail.com>
