verify: add adversary module - generic constant-folding script

noxis-verify::adversary::fold_constants walks maximal straight-line
Const(Int/Long)+Binary{Int,Long} runs, modeling the baseline attack
any deobfuscator runs first (and the one raised on the forum: two
adjacent literals and one op, foldable in your head). Each stack slot
carries its own provenance span, so several split constants placed
back to back without a separator are reported as separate findings
instead of merging into one run.

Two uses: an honest §7 measurement (answer: every Constants scheme,
mba included, folds under a generic evaluator - only pattern matchers
hardcoded to one opcode are defeated, documented already in
constants/forms.rs) and a correctness oracle (every scheme must fold
back to the exact source value, now pinned by a regression test).

Tests: bare_literals_are_not_folded,
every_constants_scheme_folds_back_to_the_source_value.

crates/noxis-verify/Cargo.toml

@@ -18,5 +18,8 @@ thiserror = { workspace = true }
 [lints]
 workspace = true
 
+[dev-dependencies]
+noxis-passes = { workspace = true }
+
 [build-dependencies]
 noxis-structure-check = { workspace = true }