Builds the guard SESSION-17 left as a TODO after the func_801463A0 `_s`-alias trap, where a draft
invented extern aliases no symbol table defines, read MATCH under rtu_match, and could never bank.
- diffs the symbols a draft's object references (reloc records) against the target .s's
%hi/%lo/jal set; reports MISSING (invented-alias signature) and INVENTED separately.
- fills a real hole: match_one/masked_diff compare relocation-MASKED words (object-vs-.s is
symbol-agnostic BY CONSTRUCTION) and rtu_match COMPILES WITHOUT LINKING -- so both are
structurally blind to this class. R34: a second oracle that can disagree with the first.
- NEGATIVE-CONTROL PROVEN: with one data extern renamed to an invented alias, match_one reports
the SAME 14 mismatched as the correct draft; symcheck exits 1 naming both symbols.
- --c compiles via match_one so the pinned triple/flags can never drift (R33); or --obj.
- applied to the live func_8014D820 close=14 draft: 12/12 symbols agree, so a match there will
link cleanly -- the §65c class is ruled out for it in advance.
- cookbook §67a + SETUP tooling-inventory row (R21). Necessary condition, NOT a match oracle:
still finish on the whole-binary byte-gate (G3/P9).
Drew T
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