Reader operations and their remaining discriminators

This addendum follows sixteen specific uncertainties from the Reader Studies series through additional source reading, manuscript comparison, numerical execution and image measurement. A newly recovered Augsburg counterpart preserves 195 clear matches in a 196-cell activity table and clarifies the distinction between celestial inclination and necessity. Cgm 7958 gives bodily signs an explicit corroborative role and shows how a recipient's circumstances change the interpretation of a profile. A separately declared calculation preserves the maximum address 28 and reaches its numbered paragraph across a page turn. Two Voynich label relations fail exact agreement across the three retained transcriptions. A prospective two-page test confirms one detached mouth-position unit in all eleven eligible figures among twenty selected; ten shared nonbody controls yield no qualifying counterexample. Historical morphology and hidden-detail measurements retain their narrower limits. Other investigations distinguish a locator error, an occluded quality, aided lexical agreement and an uncertified contraction. These results sharpen historical operations and graphic controls while specifying the missing conversions in the Voynich model. [D01–D26] This preprint is one of four companion works in the Voynich Reader Studies series. The shared release archive contains the companion manuscripts, reader guides, source matrices, figures and reproducible evidence. Scientific qualifications remain attached to their respective tests.