141: worker D's own reads_unsaved_saved scanner flagged 0x80103434, D read the row, and the
verdict is NOT a fragment -- the detector treats op 0x12 (COP2) as a GPR use, which for
ctc2/mtc2/mfc2 is wrong. Every COP2 row in that flag list is suspect. That is the THIRD
independent instance of the same lesson: every shape heuristic in this project has needed a
worker to read a flagged row and say 'this is legal, and here is why'.
142: worker C's 2^k-1 add-back rule CLOSES worker D's open question on 0x82082083. D recorded it
as a bounded negative with a named direction; C recognised the answer from an unrelated row.
The third time a worker's finding closed another worker's negative -- the strongest argument for
recording a named open question rather than a vague failure.
Christopher Williams
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