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Chris Tsang
eb68057b13
Speckle removal moves out of the frontends into Segmentation::filter_speckle, applied in the finish phase. The color frontend now clusters with good_min_area = 0 and the binary frontend emits every cluster, so the cached segmentation retains all regions and the speckle threshold can be retuned via finish() with no re-clustering. Pipeline gains a speckle_area field (Config sets it from filter_speckle^2). Frontend structs drop their filter_speckle_area field. Output on clean images is unchanged (golden/equivalence pass unblessed); noisy images are filtered downstream instead of during clustering. Adds a test tuning filter_speckle on one cached segmentation.