The fused chain, as operation.rs's tests fix it, is warp → as-shot white
balance → operations → base curve → camera matrix → store. LinearWorking
stores after the matrix, so the existing linear tap carries the body's
base curve, and a composite stitched from it and developed as an
unprofiled body would render that curve twice.
FR-MRG-2 therefore stitches camera-linear RGB — after the warp, before
white balance, curve and matrix — and the composite carries the first
source's body, matrices and as-shot neutral so its own develop applies
the profile once. The composer already makes this a uniform question:
white balance, matrix and the curve flag are reserved uniforms, so the
tap is a compose entry with no operations and a render entry that fills
them neutral. panorama.md §5.1 states the shape and asks for f32 buffers.
dtourolle
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